Alle publikasjoner ved avdelingen

• Vargemezis, G.N.; Zlotnicki, J.; Hauge, Bjørn Gitle; Kjøniksen, Anna-Lena & Strand, E.P. (2024). Contribution of VLF electromagnetic survey to the investigation of Hessdalen lights (Norway). Journal of Applied Geophysics. ISSN 0926-9851. 226. doi: 10.1016/j.jappgeo.2024.105398.
• Pandey, Avinash Kumar; Kishor, Nand; Mohanty, Soumya R. & Samuel, Paulson (2024). Intelligent Fault Detection and Classification for an Unbalanced Network with Inverter-Based DG Units. IEEE Transactions on Industrial Informatics. ISSN 1551-3203. 20(5), s. 7325–7334. doi: 10.1109/TII.2024.3359450.
• Rana, Kiran; Kishor, Nand; Negi, Richa & Biswal, Monalisa (2024). Fault Detection and VSC-HVDC Network Dynamics Analysis for the Faults in Its Host AC Networks. Applied Sciences. ISSN 2076-3417. 14(6). doi: 10.3390/app14062378.
• Ganesan, Manikandan; Kandhasamy, Sivanathan; Chokkalingam, Bharatiraja & Mihet-Popa, Lucian (2024). A Comprehensive Review on Deep Learning-Based Motion Planning and End-to-End Learning for Self-Driving Vehicle. IEEE Access. ISSN 2169-3536. 12, s. 66031–66067. doi: 10.1109/ACCESS.2024.3394869. Fulltekst i vitenarkiv
• Yadav, Seema; Kishor, Nand; Purwar, Shubhi; Raussi, Petra & Chakrabarti, Saikat (2024). Switching attack modeling and vulnerability analysis of generator for dynamics study. Sustainable Energy, Grids and Networks. ISSN 2352-4677. 38. doi: 10.1016/j.segan.2024.101297.
• Bypour, Maryam; Yekrangnia, Mohammad & Kioumarsi, Mahdi (2024). Predicting the shear capacity of composite steel plate shear wall with the application of RSM. Engineering structures. ISSN 0141-0296. 301. doi: 10.1016/j.engstruct.2023.117263.
• Shoaei, Parham; Momenzadeh, Abazar; Hosseini, Hamed; Rajaei, Shahin; Ameri, Farshad & Pilehvar, Shima (2024). One-part slag/zeolite geopolymer mortars under ambient and heat curing conditions. Case Studies in Construction Materials. ISSN 2214-5095. 20. doi: 10.1016/j.cscm.2023.e02677.
• Latif, Muhammad Jamshed; Ali, Sarmed; Jamil, Saba; Bibi, Shamsa; Jafar, Touseef & Rasheed, Ammara [Vis alle 9 forfattere av denne artikkelen] (2024). Comparative catalytic reduction and degradation with biodegradable sodium alginate based nanocomposite: Zinc oxide/N-doped carbon nitride/sodium alginate. International Journal of Biological Macromolecules. ISSN 0141-8130. 254. doi: 10.1016/j.ijbiomac.2023.127954.
• Nale, R.; Biswal, M.; Kishor, Nand; Merino, J.; Perez-Basante, A. & Rodriguez-Seco, J.E. (2024). Real-time analysis of islanding detection scheme developed for AC microgrid system. Electric power systems research. ISSN 0378-7796. 226. doi: 10.1016/j.epsr.2023.109926.
• Andersson, Gunnar; Johansen, Frode Ramstad; Hauge, Bjørn Gitle; Torgersen, Mirielle; Tellnes, Lars G. F. & Valter, Per (2024). Co-creating a Learning Community - Teaching Sustainability in Higher Education. International Journal of Advanced Corporate Learning. ISSN 1867-5565. 17(1), s. 61–73. doi: 10.3991/ijac.v17i1.42753.
• Vento, Fabiana; Nicosia, Angelo; Fiorenza, Roberto; Scirè, Salvatore; Pellegrino, Anna Lucia & Mezzina, Lidia [Vis alle 7 forfattere av denne artikkelen] (2023). Abatement of volatile organic compounds employing a thermoplastic nano-photocatalyst layered on a glass reactor. ChemPhotoChem. ISSN 2367-0932. doi: 10.1002/cptc.202300157.
• Yadav, Seema; Kishor, Nand; Purwar, Shubhi; Chakrabarti, Saikat; Raussi, Petra & Kumar, Avinash (2023). Real-time implementation for vulnerability of power components under switching attack based on sliding mode. IET Cyber-Physical Systems: Theory & Applications. ISSN 2398-3396. doi: 10.1049/cps2.12084.
• Tellnes, Lars Gunnar Furelid; Koch, Christian; Torgersen, Mirielle & Kjøniksen, Anna-Lena (2023). Value capture from low embodied emissions of buildings - a business model innovation perspective. IOP Conference Series: Earth and Environmental Science (EES). ISSN 1755-1307. 1196. doi: 10.1088/1755-1315/1196/1/012096.
• Romero-Espinosa, Andrea; G. Sanfèlix, Susana ; Morales-Cantero, Alejandro; Cuesta, Ana; Kjøniksen, Anna-Lena & Aranda, Miguel A. G. [Vis alle 8 forfattere av denne artikkelen] (2023). Processing of calcium sulfoaluminate eco-cement coatings containing microencapsulated phase change materials. Advances in Cement Research. ISSN 0951-7197. doi: 10.1680/jadcr.23.00077.
• Yadav, Anju; Kishor, Nand & Negi, Richa (2023). Voltage profile analysis at planning and operational stages with allowable PV hosting capacity. IET Renewable Power Generation. ISSN 1752-1416. 18(1), s. 14–29. doi: 10.1049/rpg2.12890.
• Jiya, Immanuel Ninma; Huynh, Khang; Gunawardena, Pasan; Kishor, Nand & Li, Yunwei Ryan (2023). Novel Isolated Multiport DC Converter with Natural Bipolar Symmetry for Renewable Energy Source Integration to DC Grids. IEEE Access. ISSN 2169-3536. 11, s. 117729–117740. doi: 10.1109/ACCESS.2023.3326752. Fulltekst i vitenarkiv Vis sammendrag

  Due to their greater reliability, efficiency, and resilience as compared to unipolar dc grid systems, bipolar dc grid systems are swiftly gaining popularity for the integration of renewable energy sources. However, development of multiport converters for bipolar microgrid systems is still progressing slowly in terms of reducing costs or improving power density and compact designs. This paper proposes a multiport isolated dc-dc converter with naturally symmetric bipolar outputs (MIBDC). With respect to the number of input ports, voltage gain, and output symmetry that the proposed converter naturally possesses, it outperforms its few competitors. Additionally, the proposed MIBDC significantly reduces component count and control complexity by employing a fixed transformer with only one primary and secondary winding for any number of inputs. The suggested converter’s performance in both open and closed loops is evaluated quantitatively in simulation and experimentally using OPAL-OP5700 RT’s hardware-in-the-loop (HIL) platform under various situations.

• Torgersen, Geir (2023). Grønne tak og vegger som lokalt overvannstiltak - State of the art in Scandinavia. Vann. ISSN 0042-2592. s. 177–188.
• Yadav, Anju; Kishor, Nand; Negi, Richa; Opas, Mikael & Raussi, Petra (2023). Performance Analysis of Bus Voltage in Distribution Network with High Penetration of PV Controlled via Data-Driven Approach. International Transactions on Electrical Energy Systems. ISSN 2050-7038. 2023. doi: 10.1155/2023/3708751.
• CHITTOOR, PRITHVI KRISHNA; Chokkalingam, Bharatiraja; Verma, Rajesh & Mihet-Popa, Lucian (2023). An Assessment of Shortest Prioritized Path-Based Bidirectional Wireless Charging Approach Toward Smart Agriculture. IEEE Access. ISSN 2169-3536. 11, s. 123742–123755. doi: 10.1109/ACCESS.2023.3329976. Fulltekst i vitenarkiv Vis sammendrag

  The agriculture sector has witnessed a transformation with the advent of smart sensing devices, leading to improved crop yield and quality. However, the management of data collection from numerous sensors across vast agricultural areas, as well as the associated charging requirements, presents significant challenges. This paper addresses the major research problem by proposing an innovative solution for charging agricultural sensors. The introduction of an energy-constrained device (ECD) enables wireless charging and transmission of soil data to a centralized server. The proposed ECDs will enable enhanced data collection, precision agriculture, optimized resource allocation, timely decision-making, and remote monitoring and control. A bidirectional wireless charging drone is employed to efficiently charge the ECDs. To optimize energy usage, a prioritized Dijkstra algorithm determines the ECDs to be charged and plans the shortest route for the drone. The wireless charging drone landing-charging station achieves an efficiency of 91.3%, delivering 72 W of power within a 5 mm range. Furthermore, the ECD possesses a data transmission range of 100 m and incorporates deep sleep functionality, allowing for a remarkable 30-day battery life.

• Kumar, V. Manoj; Chokkalingham, Bharatiraja & Mihet-Popa, Lucian (2023). Mitigation of Complexity in Charging Station Allocation for EVs Using Chaotic Harris Hawks Optimization Charge Scheduling Algorithm. IEEE Access. ISSN 2169-3536. 11, s. 130466–130482. doi: 10.1109/ACCESS.2023.3334672. Fulltekst i vitenarkiv
• Jiya, Immanuel Ninma; Gunawardena, Pasan; Huynh, Khang; Kishor, Nand & Li, Yunwei (2023). Multiport DC-DC Converter for Integrating Energy Systems in All-Electric Vehicles, 2023 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC). IEEE conference proceedings. ISSN 9798350346893. doi: 10.1109/ESARS-ITEC57127.2023.10114856.
• Li, Yuhan; Zhu, Kaizheng; Bu, Huaitian; Fu, Zhenyu; Kjøniksen, Anna-Lena & Nyström, Bo [Vis alle 7 forfattere av denne artikkelen] (2023). Miktoarm PEG–PCL Star Copolymer (AB6) Blend Composite Solid Electrolyte for All-Solid-State Lithium Metal Battery. Macromolecules. ISSN 0024-9297. 56(19), s. 7921–7930. doi: 10.1021/acs.macromol.3c01621. Vis sammendrag

  A series of AB6 type-7 miktoarm star copolymers consisting of poly(ethylene glycol) (PEG) as the A arm and poly(ε-caprolactone) (PCL) as the B arm are synthesized by controlled ring-opening polymerization of the ε-caprolactone monomer. The chemical structure is confirmed and characterized by nuclear magnetic resonance (NMR) and Fourier transform infrared (FT-IR) spectroscopies. The synthesized PEG–PCL star copolymers (PAB6) (Mn = 8400, 16,820, and 32,480) with arms of different lengths are introduced into the poly(ethylene oxide)-based solid electrolyte system. Moreover, the electrochemical, mechanical, and thermochemical properties of composite solid polymer electrolytes are enhanced by adding three miktoarm PEG–PCL star copolymers (referred to as PAB6–1, PAB6–2, and PAB6–3). The unique low-molecular-weight miktoarm copolymers with a central etheroxy group and branched carboxyl groups interact with poly(ethylene oxide) segments and lithium ions, enhancing the segment mobility of the polymer and lithium-ion transfer. Therefore, all-solid-state lithium metal batteries by the serial miktoarm star copolymer composite electrolytes display a high capacity retention of 128.1 mAh g–1 after 390 cycles.

• Redhu, Surender; Raja, Rameez; Bremdal, Bernt Arild & Nygård, Heidi S. (2023). Cognitive Data Fusion for Improving Flexibility in Smart Homes, 27th International Conference on Electricity Distribution - CIRED 2023. IET Digital Library. ISSN 978-1-83953-855-1. s. 2848–2852. doi: 10.1049/icp.2023.1029.
• Chandrakar, Ruchi; Biswal, Monalisa; Kishor, Nand; Panigrahi, Bijaya Ketan; Perez-Basante, Angel & Rodriguez-Seco, J. Emilio (2023). Adaptive Reclosing Technique Using Variational Mode Decomposition Algorithm in BESS-Based Microgrid. IEEE Access. ISSN 2169-3536. 11, s. 91133–91144. doi: 10.1109/ACCESS.2023.3307433.
• Jeyaraj, Pandia Rajan; Nadar, Edward & Mihet-Popa, Lucian (2023). Deep-Block Network for Cyberattack Mitigation and Assessment in Smart Grid Power System with Resilience Indices. Electric power components and systems. ISSN 1532-5008. 51(0). doi: 10.1080/15325008.2023.2268073. Fulltekst i vitenarkiv
• R, Ranjith Kumar; Chokkalingam, Bharatiraja; K, Udhayakumar; S, Deva Kirubakaran; Sekar, Sathiya & Mihet-Popa, Lucian (2023). Advances in Batteries, Battery Modeling, Battery Management System, Battery Thermal Management, SOC, SOH, and Charge/Discharge Characteristics in EV Applications. IEEE Access. ISSN 2169-3536. 11, s. 105761–105809. doi: 10.1109/ACCESS.2023.3318121. Fulltekst i vitenarkiv Vis sammendrag

  The second-generation hybrid and Electric Vehicles are currently leading the paradigm shift in the automobile industry, replacing conventional diesel and gasoline-powered vehicles. The Battery Management System is crucial in these electric vehicles and also essential for renewable energy storage systems. This review paper focuses on batteries and addresses concerns, difficulties, and solutions associated with them. It explores key technologies of Battery Management System, including battery modeling, state estimation, and battery charging. A thorough analysis of numerous battery models, including electric, thermal, and electro-thermal models, is provided in the article. Additionally, it surveys battery state estimations for a charge and health. Furthermore, the different battery charging approaches and optimization methods are discussed. The Battery Management System performs a wide range of tasks, including as monitoring voltage and current, estimating charge and discharge, equalizing and protecting the battery, managing temperature conditions, and managing battery data. It also looks at various cell balancing circuit types, current and voltage stressors, control reliability, power loss, efficiency, as well as their advantages and disadvantages. The paper also discusses research gaps in battery management systems.

• Gomado, Foster Dodzi; Khalifeh, Mahmoud; Saasen, Arild; G. Sanfèlix, Susana ; Kjøniksen, Anna-Lena & Aasen, Jan Aage (2023). Effect of Calcium Expansive Additives on the Performance of Granite-Based Geopolymers for Zonal Isolation in Oil and Gas Wells. SPE Journal. ISSN 1086-055X. 28(6), s. 2790–2801. doi: 10.2118/217431-PA. Fulltekst i vitenarkiv
• Jamil, Saba; Khan, Shanza Rauf; Ali, Sarmed; Bibi, Shamsa; Khan, Rais Ahmad & Gill, Waqas Amber [Vis alle 7 forfattere av denne artikkelen] (2023). Synthesis of calcium-bismuth layered double hydroxide (LADH) nanoparticles: Applications as photo-catalyst and fuel additive. Inorganic Chemistry Communications. ISSN 1387-7003. 157. doi: 10.1016/j.inoche.2023.111331.
• Ramu, Priyadharshini; Gangatharan, Sivasankar; Rangasamy, Sankar & Mihet-Popa, Lucian (2023). Categorization of Loads in Educational Institutions to Effectively Manage Peak Demand and Minimize Energy Cost Using an Intelligent Load Management Technique. Sustainability. ISSN 2071-1050. 15(16). doi: 10.3390/su151612209.
• Gjerde, Natalie Solfrid; Giudice, Alessandra Del; Zhu, Kaizheng; Knudsen, Kenneth Dahl; Galantini, Luciano & Schillén, Karin [Vis alle 7 forfattere av denne artikkelen] (2023). Synthesis and Characterization of a Thermoresponsive Copolymer with an LCST-UCST-like Behavior and Exhibiting Crystallization. ACS Omega. ISSN 2470-1343. 8(34), s. 31145–31154. doi: 10.1021/acsomega.3c03162. Fulltekst i vitenarkiv
• R, Priyadharshini Ramu; Gangatharan, Sivasankar; Rangasamy, Sankar & Mihet-Popa, Lucian (2023). Categorization of Loads in Educational Institutions to Effectively Manage Peak Demand and Minimize Energy Cost Using Intelligent Load Management Technique. Sustainability. ISSN 2071-1050.
• Rahman, Obaidur; Ali, Arif; Hussain, Ahmad; Khan, Shakeb Ahmad; Tariq, Mohd & Urooj, Shabana [Vis alle 8 forfattere av denne artikkelen] (2023). Investigation of CeO2 Nanoparticles on the Performance En-hancement of Insulating Oils. Heliyon. ISSN 2405-8440. 9(9). doi: 10.1016/j.heliyon.2023.e19264. Fulltekst i vitenarkiv Vis sammendrag

  Integrating nanotechnology in dielectric fluid significantly inhibits losses and boosts overall dielectric fluid performance. There has been research done on the effects of introducing various nanoparticles, such as titania, alumina, silica nanodiamonds, etc. In this paper, a novel nanoparticle, Ceria (CeO2), has been used, and its properties were examined using the FTIR (Fourier Transform Infrared) spectrum, the XRD (X-ray Diffrac-tion) spectrum, the SEM (Scanning Electron Microscopy), and the TEM (Transmission Electron Microscopy). This paper illustrates an efficient dielectric fluid prepared by the successful dispersion of Cerium Oxide (CeO2) nanoparticles in various concentrations into four commercial oils, namely mineral oil, rapeseed oil, synthetic ester oil, and soybean oil, to enhance and improve their dielectric characteristics. The performance investigation emphasises breakdown strength enhancement and other dielectric properties of the colloidal solution comprising different nanoparticle (NP) concentrations. Various commercial oils are used as a base in nano-oil to diversify their applicability as dielectric fluids by measuring the correlation in dielectric parame-ters and statistically assessing their applicability with normal and Weibull distributions. The obtained ex-perimental data sets were analysed using the Statistics and Machine Learning Toolbox in MATLAB. The aging measurement has been done only on mineral oil, and results were matched using a predictive model of statistics and the Machine Learning Toolbox in MATLAB. Well-dispersed CeO2 NPs in the insulating oils lead to a significant increase in AC breakdown strength. The effect of ageing on the dielectric properties of nano oils yields better results than conventionally aged oil. It has been observed that the breakdown voltage is enhanced by up to 30 % for mineral oil at an optimal concentration of 0.01 g/L, 9% for synthetic ester oil at 0.03 g/L, 18% for rapeseed oil at 0.02 g/L, and 19% for soybean oil at 0.03 g/L nanoparticle concentration. Following the dispersion of CeO2 nanoparticles, the dielectric constant of all insulating oils has also signifi-cantly improved. The overall experimental results are promising and show the potential of the CeO2 NPs-based nano oil as an efficient and highly performing dielectric oil for different power applications.

• Rengma, Nyenshu Seb; Yadav, Manohar & Kishor, Nand (2023). Solar photovoltaic water pumping system: A software tool development-based optimal configuration investigation for system installation location, sizing and deployment. Renewable Energy Focus. ISSN 1755-0084. 46, s. 236–255. doi: 10.1016/j.ref.2023.07.001.
• Pandey, Avinash Kumar; Kishor, Nand; Mohanty, Soumya R. & Samuel, Paulson (2023). A reliable fault detection algorithm for distribution network with DG resources. Electric power systems research. ISSN 0378-7796. 223. doi: 10.1016/j.epsr.2023.109548.
• Kumar, Lalit; Kishor, Nand; Kumar, Jagdish; Degefa, Merkebu Zenebe; Duong, Dinh Thuc & D'Arco, Salvatore (2023). Initial Results with Real-Time Testing of Smart-WAMS for Power Oscillation Monitoring, 2023 International Conference on Power, Instrumentation, Control and Computing - PICC. IEEE (Institute of Electrical and Electronics Engineers). ISSN 979-8-3503-3446-3. doi: 10.1109/PICC57976.2023.10142481. Vis sammendrag

  This article illustrates the laboratory based real-time testing of smart wide-area monitoring systems (smart-W AMS). The smart-WAMS approach has already been published by the authors of this paper and it has been proven very effective in wide-area monitoring of power oscillations. Smart-WAmsconsumes the phasor measurement unit (PMU) signal and gives the accurate real-time information about the various critical modes present in the system. The dominant low frequency modes can be tracked in real-time in terms of its frequency and amplitude deviation. The testing is done using real-time simulator, Opal-RT. The two power system networks are considered for testing. The first one is the offline IEEE 39 bus system which is simulated in real-time environment in Opal-RT and the second one is the online Nordic grid system. The procedure and the relevant details involved in the testing are explained and the obtained results are also discussed.

• Raza, Ali; Rauf Khan, Shanza; Ali, Sarmed; Jamil, Saba & Bibi, Shamsa (2023). Silver/Titanium nanoparticles encapsulated microgel for catalytic reduction. Inorganic Chemistry Communications. ISSN 1387-7003. 153. doi: 10.1016/j.inoche.2023.110851.
• Aravind, R.; Chokkalingam, Bharatiraja & Mihet-Popa, Lucian (2023). A Transformerless Non-Isolated Multi-Port DC-DC Converter for Hybrid Energy Applications. IEEE Access. ISSN 2169-3536. 11, s. 52050–52065. doi: 10.1109/ACCESS.2023.3280195. Fulltekst i vitenarkiv
• S., Devakirubakaran; Verma, Rajesh; Chokkalingam, Bharatiraja & Mihet-Popa, Lucian (2023). Performance Evaluation of Static PV Array Configurations for Mitigating Mismatch Losses. IEEE Access. ISSN 2169-3536. 11, s. 47725–47749. doi: 10.1109/ACCESS.2023.3274684. Fulltekst i vitenarkiv Vis sammendrag

  Solar photovoltaic (PV) systems are susceptible to power loss caused by environmental factors such as partial shading and temperature changes. To address this issue, PV modules are connected in array configurations. However, these configurations can lead to mismatch losses between the PV rows, which reduce power output. While there are many solutions to mitigate these losses, the performance of each solution can vary depending on the environmental conditions and the array configuration logic. This research paper evaluates the performance of fifteen existing static PV array configuration techniques under various shading patterns. We analyze the mathematical formulation and logic used behind each configuration, as well as the shade dispersion rate, power generation, power losses, advantages, and disadvantages. Our analysis includes a MATLAB/Simulink® model of a 5×5 array for each configuration under different shading patterns. The performance of consistent and best configurations is also evaluated in a real-time environment. The results categorize each configuration as consistent, best, average, or poor. This paper provides a detailed analysis of the different PV array configurations and their performance, which can help in selecting the optimal configuration for specific environmental conditions.

• Azarhomayun, Fazel; Haji, Mohammad; Shekarchi, Mohammad & Kioumarsi, Mahdi (2023). Investigating the Effectiveness of the Stable Measurement Tests of Self-Compacting Concrete. Construction and Building Materials. ISSN 0950-0618. 383. doi: 10.1016/j.conbuildmat.2023.131262. Fulltekst i vitenarkiv Vis sammendrag

  Self-compacting concrete (SCC) is a highly flowable concrete that can fill complex formwork without the need for vibration. However, its high consistency can lead to various forms of instability, such as separation, bleeding, blockage, and settling. These instabilities can adversely affect the fresh and hardened properties of the concrete. Therefore, understanding the types of instability, the factors that cause it, and the methods for measuring stability is crucial in preventing instability. However, there is currently no standardization for stability measurement methods, and their efficiency has yet to be thoroughly investigated. Furthermore, some standardized methods are expensive and time-consuming. Thus, examining proposed methods is necessary to identify valuable and efficient ones and to explore the possibility of using easier and less expensive methods instead of standardized ones. This study aims to compare the effectiveness of different stability tests for SCC based on their reproducibility and measurability capabilities. Two types of concrete with different fluidity and stability were tested, and the relationship between the tests was investigated. The results revealed that, except for the J-ring and rocking device tests, all investigated tests yielded acceptable results for measuring SCC stability. Additionally, the effects of instability on implementing a beam-shaped mold were examined. The findings indicated that instability reduces the compressive strength, decreases the specific electrical resistance, and increases the inhomogeneity of its distribution throughout the concrete volume, thereby increasing its susceptibility to corrosion.

• Mihet-Popa, Lucian; Ahmed, Ibrahim & Pedersen, Andreas (2023). Hierarchical Control of an Islanded AC Micro Grid Using FS-MPC and an EMS. I Mihet-Popa, Lucian (Red.), SMART GRIDS TECHNOLOGY AND APPLICATIONS. IntechOpen. ISSN 978-1-80355-685-7. s. 20–47. doi: 10.5772/intechopen.110815. Fulltekst i vitenarkiv Vis sammendrag

  Microgrids and distributed energy resources (DERs) are gaining popularity owing to their efficient operation, autonomy, and dependability. Microgrids provide several new opportunities, one of which is the ability to deliver electricity continuously, even in the event of a grid failure. This chapter will first describe the modeling of DER components in a microgrid, with each component using Finite Set-Model Predictive Control (FS-MPC) for controlling the inverters to be robust, to have a fast response, to account for multiple objectives, and to eliminate manual tuning. In addition, droop control will be used to provide a voltage reference for the FS-MPC. The PV-inverter will operate as a grid- forming inverter, while the other inverters will serve as grid-feeding inverters. The proposed inverter models are validated using simulations. The microgrid has been modeled using MATLAB-Simulink software package. A supervisory controller for energy management system of the microgrid to operate in different power flows through the proposed control algorithm has also been designed. The simulation results show the effectiveness and robustness of the proposed controller during dynamic performance and transients, and the developed energy management system algorithm successfully controlled the power flow to ensure continuous power delivery to the load under all circumstances.

• Varas, D.; Pernas-Sánchez, J.; Fjeldberg, Nina Faye & Martín-Montal, J. (2023). Experimental analysis at different loading rates of 3D printed polymeric auxetic structure based on cylindrical elements. Polymer testing. ISSN 0142-9418. 119. doi: 10.1016/j.polymertesting.2023.107930.
• Yadav, Anju; Kishor, Nand & Negi, Richa (2023). Bus Voltage Violations under Different Solar Radiation Profiles and Load Changes with Optimally Placed and Sized PV Systems. Energies. ISSN 1996-1073. 16(2). doi: 10.3390/en16020653.
• Ali, Muhammad; Farooq, Ajmal; Khan, Muhammad Qasim; Khan, Muhammad Mansoor & Mihet-Popa, Lucian (2023). Analysis of Asymmetric Hybrid Modular Multilevel Topology for Medium-Voltage Front-End Converter Applications. Energies. ISSN 1996-1073. 16(4). doi: 10.3390/en16041572.
• Jasim, Ali M.; Jasim, Basil H.; Flah, Aymen; Bolshev, Vadim & Mihet-Popa, Lucian (2023). A new optimized demand management system for smart grid-based residential buildings adopting renewable and storage energies. Energy Reports. ISSN 2352-4847. 9, s. 4018–4035. doi: 10.1016/j.egyr.2023.03.038. Fulltekst i vitenarkiv
• Tripathi, Santosh; Singh, Vijay P.; Kishor, Nand & Pandey, A.S. (2023). Load frequency control of power system considering electric Vehicles’ aggregator with communication delay. International Journal of Electrical Power & Energy Systems. ISSN 0142-0615. 145. doi: 10.1016/j.ijepes.2022.108697.
• Srilakshmi, Koganti; Sujatha, Canavoy Narahari; Balachandran, Praveen Kumar; Mihet-Popa, Lucian & Kumar, Naluguru Udaya (2022). Optimal Design of an Artificial Intelligence Controller for Solar-Battery Integrated UPQC in Three Phase Distribution Networks. Sustainability. ISSN 2071-1050. 14(21). doi: 10.3390/su142113992.
• Solesvik, Marina ; Torgersen, Mirielle; Andersson, Gunnar & Valter, Per (2022). Green Business Models: definitions, types, and life cycle analysis. Forum Scientiae Oeconomia. ISSN 2300-5947. 10(4), s. 199–217. doi: 10.23762/FSO_VOL10_NO4_10. Fulltekst i vitenarkiv
• Jiya, Immanuel Ninma; Huynh, Van Khang; Kishor, Nand & Ciric, Rade (2022). Novel High Gain Multiport Isolated DC-DC Converter with Bipolar Symmetric Outputs, IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society. IEEE (Institute of Electrical and Electronics Engineers). ISSN 978-1-6654-8025-3. doi: 10.1109/IECON49645.2022.9968834.
• Khan, Suhaib Ahmad; Tariq, Mohd; Khan, Asfar Ali; Urooj, Shabana & Mihet-Popa, Lucian (2022). An Experimental Study and Statistical Analysis on the Electrical Properties of Synthetic Ester-Based Nanofluids. Energies. ISSN 1996-1073. 15(23). doi: 10.3390/en15239127. Fulltekst i vitenarkiv
• Khan, Suhaib Ahmad; Tariq, Mohd; Khan, Asfar Ali; Urooj, Shabana & Mihet-Popa, Lucian (2022). An Experimental Study and Statistical Analysis on the Dielectric Properties of ZnO and CuO-Based Synthetic Ester Nanofluids. Energies. ISSN 1996-1073. 15(23). doi: 10.3390/en15239127. Fulltekst i vitenarkiv
• Badini, Sai Shiva; Verma, Vimlesh; Tariq, Mohd; Urooj, Shabana & Mihet-Popa, Lucian (2022). Performance of a Vector-Controlled PMSM Drive without Using Current Sensors. Mathematics. ISSN 2227-7390. 10(23). doi: 10.3390/math10234623. Fulltekst i vitenarkiv
• Hashaam, Muhammad; Ali, Sarmed; Khan, Tahreem; Salman, Muhammad; Khan, Shanza Rauf & Aqib, Amjad Islam [Vis alle 12 forfattere av denne artikkelen] (2022). Assembly of Smart Microgels and Hybrid Microgels on Graphene Sheets for Catalytic Reduction of Nitroarenes. Catalysts. ISSN 2073-4344. 12(10). doi: 10.3390/catal12101172. Fulltekst i vitenarkiv
• Avilés, María-Dolores; Sánchez-Rodríguez, Cristian; Pamies, Ramon Francisco Porras; Bermúdez, María-Dolores; Carrión-Vilches, Francisco-José & G. Sanfèlix, Susana [Vis alle 7 forfattere av denne artikkelen] (2022). New Water-Ethylene Glycol Lubricants with Stearate Ionic Liquid Crystal Additive. Lubricants. ISSN 2075-4442. 10(10). doi: 10.3390/lubricants10100241. Fulltekst i vitenarkiv
• Shehroz, Hamza; Ali, Sarmed; Bibi, Guria; Khan, Tahreem; Jamil, Saba & Khan, Shanza Rauf [Vis alle 8 forfattere av denne artikkelen] (2022). Comparative investigation of the catalytic application of α/β/γ-MnO<inf>2</inf> nanoparticles synthesized by green and chemical approaches. Environmental technology. ISSN 0959-3330. doi: 10.1080/09593330.2022.2137437.
• Alwar, Srinivasan; Samithas, Devakirubakaran; Boominathan, Meenakshi Sundaram; Balachandran, Praveen Kumar & Mihet-Popa, Lucian (2022). Performance Analysis of Thermal Image Processing-Based Photovoltaic Fault Detection and PV Array Reconfiguration—A Detailed Experimentation. Energies. ISSN 1996-1073. 15(22). doi: 10.3390/en15228450. Fulltekst i vitenarkiv Vis sammendrag

  Due to the flexibility, sustainability, affordability, and ease of installation of solar photovoltaic systems, their use has significantly increased over the past two decades. The performance of a solar PV system can be constrained by a variety of external conditions, including hotspots, partial shade, and other minor faults. This causes the PV system to permanently fail and power losses. The power output in a partially shaded solar system is improved in this work by the introduction of a fault classifier based on thermal image analysis with a reconfiguration algorithm. For that purpose, the entire PV array is divided into two parts, with one of these being the male part and the other being the female part. MOSFET switches are used to build the switching matrix circuit that connects these parts. The Flir T420bx thermal camera captures thermal pictures, and MATLAB/Simulink® is used to extract the image properties. The pairing reconfiguration pattern is found using an algorithm based on image processing and the image attributes. The switching signals to the switching circuit are triggered by an Arduino controller. The image attributes of the thermal images may also be used to categorize PV system defects. This reconfiguration technique is easy, simple to use, and it can also be used to check the health of each PV module. The performance of the proposed work was validated using a 5 kW PV system with a 4 × 5 TCT array configuration at Sethu Institute of Technology’s renewable energy lab in India. The proposed method was simulated using the MATLAB-Simulink software program, and the outcomes were verified on different hardware setups.

• Andersson, Gunnar; Sæthern, Beate Brevik; Glømmen, Anne Margrethe; Langvik, trond Åge; Sandhaug, Per & Hallgren, Olle [Vis alle 7 forfattere av denne artikkelen] (2022). RESEARCHING PSYCHOLOGICAL SAFETY AMONG WELFARE AND INNOVATION STUDENTS , ICERI2022 Proceedings. International Academy of Technology, Education and Development (IATED). ISSN 978-84-09-45476-1. doi: https:/doi.org/10.21125/iceri.2022.0316.
• Rydningen, Ulf; Torgersen, Geir & Bjerkholt, Jarle Tommy (2022). Categorising area models for stormwater fees at propert level: A literature review. WIT Transactions on the Built Environment. ISSN 1746-4498. 208, s. 93–105. doi: 10.2495/FRIAR220081. Fulltekst i vitenarkiv
• Shah, Sayyed Junaid Ul Hassan; Jamil, Saba; Ali, Sarmed; Khan, Shanza Rauf & Janjua, Muhammad Ramzan Saeed Ashraf (2022). Synthesis of Rod Like Chromium/Manganese Layer Double Hydroxide and Applications. Russian Journal of Physical Chemistry. ISSN 0036-0244. 96(6), s. 1215–1227. doi: 10.1134/S0036024422060218.
• Naz, Saman; Bibi, Guria; Jamil, Saba; UrRehman, Shafiq; Bibi, Shamsa & Ali, Sarmed [Vis alle 9 forfattere av denne artikkelen] (2022). Preparation of manganese-doped tin oxide nanoparticles for catalytic reduction of organic dyes. Chemical Physics Letters. ISSN 0009-2614. 802(September 2022). doi: 10.1016/j.cplett.2022.139768.
• Biswal, Monalisa; Durga Prasad, Ch.; Ray, Papia & Kishor, Nand (2022). Modified Complete Ensemble Empirical Mode Decomposition based HIF detection approach for microgrid system. International Journal of Electrical Power & Energy Systems. ISSN 0142-0615. 141(Oktober 2022). doi: 10.1016/j.ijepes.2022.108254. Fulltekst i vitenarkiv
• Srivastava, Ankit Kumar; Tripathi, Saurabh Mani; Kumar, Sachin; Elavarasan, Rajvikram Madurai; Gangatharan, Sivasankar & Kumar, Dinesh [Vis alle 7 forfattere av denne artikkelen] (2022). Machine Learning Approach for Forecast Analysis of Novel COVID-19 Scenarios in India. IEEE Access. ISSN 2169-3536. 10, s. 95106–95124. doi: 10.1109/ACCESS.2022.3204804. Fulltekst i vitenarkiv
• Vankadara, Sampath Kumar; Chatterjee, Shamik; Balachandran, Praveen Kumar & Mihet-Popa, Lucian (2022). Marine Predator Algorithm (MPA)-Based MPPT Technique for Solar PV Systems under Partial Shading Conditions. Energies. ISSN 1996-1073. 15(17). doi: 10.3390/en15176172. Fulltekst i vitenarkiv
• Kumar, Lalit; Ahmed, Shehab; Vanfretti, Luigi & Kishor, Nand (2022). Real-Time Testing of Synchrophasor-Based Wide-Area Monitoring System Applications Acknowledging the Potential Use of a Prototyping Software Toolchain. International Transactions on Electrical Energy Systems. ISSN 2050-7038. 2022. doi: 10.1155/2022/6215040. Fulltekst i vitenarkiv
• Yin, Chunyang; Li, Qing; Zheng, Jun; Ni, Yaqiong; Wu, Huiqiong & Kjøniksen, Anna-Lena [Vis alle 9 forfattere av denne artikkelen] (2022). Progress in regulating electronic structure strategies on Cu-based bimetallic catalysts for CO<inf>2</inf> reduction reaction. Advanced Powder Materials (APM). ISSN 2772-834X. 1(4). doi: 10.1016/j.apmate.2022.100055.
• Wu, Huiqiong; Lei, Yulai; Wang, Jingxing; Tan, Yun; Song, Xianwen & Zheng, Jun [Vis alle 11 forfattere av denne artikkelen] (2022). Exploiting CMC@Fe3O4 nanoparticles as a multi-functional component for hydrogel fabrication. Journal of Physics D: Applied Physics. ISSN 0022-3727. 55(40). doi: 10.1088/1361-6463/ac8350.
• Harini, S.; Chellammal, N.; Chokkalingam, Bharatiraja & Mihet-Popa, Lucian (2022). A Novel High Gain Dual Input Single Output Z-Quasi Resonant (ZQR) DC/DC Converter for Off-Board EV Charging. IEEE Access. ISSN 2169-3536. 10, s. 83350–83367. doi: 10.1109/ACCESS.2022.3195936. Fulltekst i vitenarkiv
• Mathisen, Therese Fostervold & Johansen, Frode Ramstad (2022). The Impact of Smartphone Apps Designed to Reduce Food Waste on Improving Healthy Eating, Financial Expenses and Personal Food Waste: Crossover Pilot Intervention Trial Studying Students’ User Experiences. JMIR Formative Research. ISSN 2561-326X. 6(9). doi: 10.2196/38520. Fulltekst i vitenarkiv
• Mohanraj, Deepak; Gopalakrishnan, Janaki; Chokkalingam, Bharatiraja & Mihet-Popa, Lucian (2022). Critical Aspects of Electric Motor Drive Controllers and Mitigation of Torque Ripple - Review. IEEE Access. ISSN 2169-3536. 10, s. 73635–73674. doi: 10.1109/ACCESS.2022.3187515. Fulltekst i vitenarkiv
• Repalle, Naveena Bhargavi; Sarala, Pullacheri; Mihet-Popa, Lucian; Kotha, Shashidhar Reddy & Rajeswaran, Nagalingam (2022). Implementation of a Novel Tabu Search Optimization Algorithm to Extract Parasitic Parameters of Solar Panel. Energies. ISSN 1996-1073. 15(13). doi: 10.3390/en15134515. Fulltekst i vitenarkiv Vis sammendrag

  : The aging of PV cells reduces their electrical performance i.e., the parasitic parameters are introduced in the solar panel. The shunt resistance (RSh), series resistance (RS), photo current (IPh), diode current (Id), and diffusion constant (a1) are known as parasitic or extraction parameters. Cracks and hotspots reduce the performance of PV cells and result in poor V–I characteristics. Certain tests are carried out over a long period of time to determine the quality of solar cells; for example, 1000 h of testing is comparable to 20 years of operation. The extraction of solar parameters is important for PV modules. The Tabu Search Optimization (TSO) algorithm is a robust meta-heuristic algorithm that was employed in this study for the extraction of parasitic parameters. Particle Swarm Optimization (PSO) and a Genetic lgorithm (GA), as well as other well-known optimization methods, were used to test the proposed method's correctness. The other approaches included the lightning search algorithm (LSA), gravitational search algorithm (GSA), and pattern search (PS). It can be concluded that the TSO approach extracts all six parameters in a reasonably short period of time. The work presented in this paper was developed and analyzed using a MATLAB-Simulink software environment.

• Oliver, Jeba Singh; David, Prince Winston; Balachandran, Praveen Kumar & Mihet-Popa, Lucian (2022). Analysis of Grid-Interactive PV-Fed BLDC Pump Using Optimized MPPT in DC–DC Converters. Sustainability. ISSN 2071-1050. 14(12). doi: 10.3390/su14127205. Fulltekst i vitenarkiv Vis sammendrag

  In solar photovoltaic (PV) system-based Brushless DC (BLDC) motors for water pumping application, the role of DC/DC converters is very important. In order to extract the maximum power from the PV array, an efficient DC/DC converter is essential at the intermediate stage. In this work, different DC/DC converter topologies suitable for BLDC motors are proposed. The converters are supported by an optimized maximum power point tracking system to provide a reliable operation. Recent optimization algorithms such as fuzzy logic, perturb and observe, grey wolf, and whale optimization are implemented with the PI controller in maximum power point tracking to maximize the conversion efficiency. The obtained results using SEPIC, LUO, and interleaved LUO converters provide a comparative study in the case of converter output, motor parameters, and grid output. The performance analysis on three different converters and multiple optimization methods are carried out. By analyzing the performance of different converter topologies, the interleaved LUO converter outperforms the other two converters with the results of a voltage gain ratio of 1:22, conversion efficiency of 98.3%, and grid current THD of 2.9%. Moreover, regarding the power quality aspect, the total harmonic distortion of the grid current is maintained below the IEEE-519 standard. In addition, the developed system has an advantage of operating both in stand-alone and grid-connected operation modes.

• Jiya, Immanuel Ninma; Huynh, Van Khang; Kishor, Nand & Ciric, Rade (2022). Novel Family of High-Gain Nonisolated Multiport Converters with Bipolar Symmetric Outputs for DC Microgrids. IEEE transactions on power electronics. ISSN 0885-8993. 37(10), s. 12151–12166. doi: 10.1109/TPEL.2022.3176688.
• UlAin, Qurat; Ali, Sarmed; Jamil, Saba; Bibi, Shamsa; Rauf Khan, Shanza & UrRehman, Shafiq [Vis alle 11 forfattere av denne artikkelen] (2022). Comparison of catalytic and fuel additive properties of bimetallic nanoparticles and its composite: FeMnO<inf>3</inf> and PANI-FeMnO<inf>3</inf>. Materials Science in Semiconductor Processing. ISSN 1369-8001. 144(June). doi: 10.1016/j.mssp.2022.106630.
• Prasad, Sheetla; Yadav, Omkar & Kishor, Nand (2022). Wind farm dynamic effect mitigation on power sharing and stability of MTDC grid through a supplementary controller. Control Engineering Practice. ISSN 0967-0661. 123(June). doi: 10.1016/j.conengprac.2022.105152.
• Bibi, Guria; Khan, Shanza Rauf; Ali, Sarmed; Jamil, Saba; Bibi, Shamsa & Shehroz, Hamza [Vis alle 7 forfattere av denne artikkelen] (2022). Role of capping agent in the synthesis of zinc–cobalt bimetallic nanoparticles and its application as catalyst and fuel additive. Applied Nanoscience. ISSN 2190-5509. 12(7), s. 2169–2181. doi: 10.1007/s13204-022-02468-9.
• Mohanraj, Deepak; Aruldavid, Ranjeev; Verma, Rajesh; Sathiyasekar, K.; Barnawi, Abdulwasa B. & Chokkalingam, Bharatiraja [Vis alle 7 forfattere av denne artikkelen] (2022). A Review of BLDC Motor: State of Art, Advanced Control Techniques, and Applications. IEEE Access. ISSN 2169-3536. 10, s. 54833–54869. doi: 10.1109/ACCESS.2022.3175011. Fulltekst i vitenarkiv Vis sammendrag

  The shortage of biofuel and the high tailpipe emission from vehicles demand the adoption of green energy. The development of Electric Vehicles (EVs) represents a watershed moment in the effort to go green. The EVs have a low mileage range and are expensive due to the sophisticated design and control mechanism of motors, which has hampered their popularity. Recently the interest in developing the new age EV grade motors with high dynamic characteristics is increased. This paper reviews the recent advancements in EV motors, Control techniques, and the challenges of various e-motors. The technical performance and cost of different electric motors (e-motors) used in EVs are compared, and the challenges are listed. The Permanent magnet brushless DC motor (PMBLDC) provides high torque density, Permanent magnet synchronous motor (PMSM) delivers high efficiency, and switched reluctance motor (SRM) has a low cost however all of these have high torque ripple, and though the Induction motor (IM) has the advantage of low ripple and low cost, nevertheless the efficiency is poor. In addition to a detailed electric motor (e-motor) design process, future research possibilities in achieving long-range and low costs are also stated.

• UrRehman, Shafiq; Anwer, Makhvela; BiBi, Shamsa; Jamil, Saba; Yasin, Muhammad & Rauf Khan, Shanza [Vis alle 9 forfattere av denne artikkelen] (2022). DFT analysis of different substitutions on optoelectronic properties of carbazole-based small acceptor materials for Organic Photovoltaics. Materials Science in Semiconductor Processing. ISSN 1369-8001. 140(Mars). doi: 10.1016/j.mssp.2021.106381.
• Khan, Suhaib Ahmad; Tariq, Mohd; Khan, Asfar Ali; Alamri, Basem & Mihet-Popa, Lucian (2022). Influence of Area and Volume Effect on Dielectric Behaviour of the Mineral Oil-Based Nanofluids. Energies. ISSN 1996-1073. 15(9). doi: 10.3390/en15093354. Fulltekst i vitenarkiv
• Rajeswaran, Nagalingam; Rajesh, Thangaraj; Mihet-Popa, Lucian; Krishna, K.Vamshi & Özer, Özen (2022). FPGA Implementation of AI-Based Inverter IGBT Open Circuit Fault Diagnosis of Induction Motor Drives. Micromachines. ISSN 2072-666X. 13(5). doi: 10.3390/mi13050663. Fulltekst i vitenarkiv
• Indrajayanthan, Venkatraman; Mohanty, Nalin Kant; Elavarasan, Rajvikram Madurai & Mihet-Popa, Lucian (2022). Investigation on current and prospective energy transition scenario in Indian landscape using integrated SWOT-MCDA methodology. Sustainability. ISSN 2071-1050. 14(9). doi: 10.3390/su14094940. Fulltekst i vitenarkiv
• Khatoon, Shabana; Khan, Asfar Ali; Tariq, Mohd; Alamri, Basem & Mihet-Popa, Lucian (2022). Flashover Voltage Prediction Models under Agricultural and Biological Contaminated Condition on Insulators. Energies. ISSN 1996-1073. 15(4). doi: 10.3390/en15041297. Fulltekst i vitenarkiv Vis sammendrag

  The flashover performance of contaminated insulators highly depends on the type of pollutant and its present concentration. In this paper, important agricultural salts (NaCl, K2SO4, NaHCO3, CaSO4, KHCO3, MgSO4, NH4), 2Fe (SO4)2 , 6H2O (ferrous ammonium sulphate, dust and urea) at different concentration and biological contaminants such as algae and fungi were taken as pollutants, and AC flashover behaviour of porcelain cap and pin type insulator polluted with these two different pollutants was investigated. The experiment was carried out by a semi-natural method wherein the insulator was first polluted artificially thereafter natural fog was applied to measure the wet flashover voltage. Test results indicate that the flashover voltages were affected by both soluble salts and non-soluble components deposit on the insulator surface. In case of thick contaminated layer non-soluble deposits greatly reduced the flashover voltage. Moreover, by using regression analysis four empirical models based on different variables have been developed. The empirical models developed in the present work represent a good degree of relation to predicting the flash-over voltage of naturally contaminated insulators.

• Elavarasan, Rajvikram Madurai; Pugazhendhi, Rishi; Irfan, Muhammad; Mihet-Popa, Lucian; Khan, Irfan Ahmad & Campana, Pietro Elia (2022). State-of-the-art sustainable approaches for deeper decarbonization in Europe – An endowment to climate neutral vision. Renewable and Sustainable Energy Reviews. ISSN 1364-0321. doi: 10.1016/j.rser.2022.112204. Vis sammendrag

  This study reviews the effective decarbonization strategies in the context of Europe’s climate neutral vision. Initially, the study analyzes the reasons for ever-increasing emissions and investigates the perception of decarbonization in line with various influencing factors such as population size, economic growth, energy intensity, emission intensity, innovation, affordability and time. Subsequently, an in-depth qualitative analysis is performed to force out challenges that Europe faces in decarbonizing the heating sector from the aspects, such as using clean energy resources, effective heat energy conversion and management approaches. Sustainable approaches and practices are proposed to mitigate carbonization and to promote carbon sink in line with the major problems associated with various sectors. This study also reviews various decarbonization policies that can direct the governments’ action to effectively make a transition towards a climate-neutral society. The key findings highlight that solar energy utilization in small-scale is relatively not preferable for heat energy conversion due to climatic conditions, while district heating network with bio- and geothermal energy resource highly favors clean heat transformation scenario. In addition, 3D printing has a prodigious role to reduce building lifecycle emissions and hybrid policies as well as reward-based policies yields better outcomes. Promoting hydrogen utilization and carbon capture storage and utilization technologies can pivot climate neutrality in the sectors that are difficult to decarbonize. On the other hand, it can be observed that more focus is provided to reduce emissions and significantly less attention is focused on carbon sink.

• Riaz, Muhammad; Ahmad, Sadiq; Hussain, Irshad; Naeem, Muhammad Asif & Mihet-Popa, Lucian (2022). Probabilistic Optimization Techniques in Smart Power System. Energies. ISSN 1996-1073. 15(3). doi: 10.3390/en15030825. Fulltekst i vitenarkiv Vis sammendrag

  Uncertainties are the most significant challenges in the smart power system, necessitating the use of precise techniques to deal with them properly. Such problems could be effectively solved using a probabilistic optimization strategy. It is further divided into stochastic, robust, distributionally robust, and chance-constrained optimizations. The topics of probabilistic optimization in smart power systems are covered in this review paper. In order to account for uncertainty in optimization processes, stochastic optimization is essential. Robust optimization is the most advanced approach to optimize a system under uncertainty, in which a deterministic, set-based uncertainty model is used instead of a stochastic one. The computational complexity of stochastic programming and the conservativeness of robust optimization are both reduced by distributionally robust optimization.Chance constrained algorithms help in solving the constraints optimization problems, where finite probability get violated. This review paper discusses microgrid and home energy management, demand-side management, unit commitment, microgrid integration, and economic dispatch as examples of applications of these techniques in smart power systems. Probabilistic mathematical models of different scenarios, for which deterministic approaches have been used in the literature, are also presented. Future research directions in a variety of smart power system domains are also presented.

• Khan, Suhaib Ahmad; Tariq, Mohd; Khan, Asfar Ali; Alamri, Basem & Mihet-Popa, Lucian (2022). Assessment of Thermo-Physical Performance of Ester-Based Nanofluids for Enhanced Insulation Cooling in Transformers. Electronics. ISSN 2079-9292. 11(3). doi: 10.3390/electronics11030376. Fulltekst i vitenarkiv Vis sammendrag

  Nanotechnology provides an effective way to upgrade the thermo physical characteris- 12 tics of dielectric oils and creates optimal transformer design. The properties of insulation materials 13 have a significant effect on the optimal transformer design. Ester based nanofluids (NF) are intro- 14 duced as an energy-efficient alternative to conventional mineral oils, and prepared by dispersing 15 nanoparticles in the base oil. This study presents the effect of nanoparticles on the thermo-physical 16 properties of pure natural ester (NE) and synthetic ester (SE) oils with temperature varied from 17 ambient up to 80 oC. A range of concentrations of Graphene oxide (GO) and TiO2 nanoparticles 18 were used in the study to upgrade the thermo physical properties of ester based oils. The experi- 19 ment for thermal conductivity and viscosity were performed using a TC-4 apparatus that follows 20 Debby’s concept, and redwood viscometer apparatus that follows the ASTM- D445 experimental 21 standard respectively. The experimental results show that nanoparticles have a positive effect on 22 thermal conductivity and viscosity of oils, while they reduce with increase in temperature

• Rajamoorthy, Rajasekaran; Saraswathi, Hemachandira V.; Devaraj, Jayanthi; Kasinathan, Padmanathan; Elavarasan, Rajvikram Madurai & Arunachalam, Gokulalakshmi [Vis alle 8 forfattere av denne artikkelen] (2022). A Hybrid Sailfish Whale Optimization and Deep Long Short-Term Memory (SWO-DLSTM) Model for Energy Efficient Autonomy in India by 2048. Sustainability. ISSN 2071-1050. 14(3). doi: 10.3390/su14031355. Fulltekst i vitenarkiv Vis sammendrag

  In order to formulate the long-term and short-term development plans to meet the energy needs, there is a great demand for accurate energy forecasting. Most of the existing energy demand forecasting models predict the amount of energy at a regional or national scale and failed to forecast the demand for power generation for small-scale decentralized energy systems, like micro grids, buildings, and energy communities. Deep learning models play a vital role in accurately forecasting the energy de-mand. A novel model called Sail Fish Whale Optimization-based Deep Long Short- Term memory (SFWO-based Deep LSTM) to forecast electricity demand in the distribution systems is proposed. The proposed SFWO is designed by integrating the Sail Fish Optimizer (SFO) with the Whale Optimiza-tion Algorithm (WOA). The Hilbert-Schmidt Independence Criterion Lasso (HSIC) is applied on the dataset, which is collected from the Central electricity authority, Government of India, for selecting the optimal features using the technical indicators. The proposed algorithm was implemented in MATLAB software package and the study was done using real-time data. The feature selection pro-cess improves the accuracy of the proposed model by training the features using Deep LSTM. The results of the proposed model in terms of install capacity prediction, village electrified prediction, length of R & D lines prediction, hydro, coal, diesel, nuclear prediction, etc. are compared with the existing models. The proposed model achieves good accuracy with the average normalized Root Mean Squared Error (RMSE) value of 4.4559. The hybrid approach provides improved accuracy for the prediction of energy demand in India by the year 2047.

• Venkatesh, Banala; Sankaramurthy, Padmini; Chokkalingam, Bharatiraja & Mihet-Popa, Lucian (2022). Managing the demand in Smart Grid Based on Load shifting with Controllable Devices Using Hybrid WFS2ACSO Technique. Energies. ISSN 1996-1073. 15(3), s. 1–25. doi: 10.3390/en15030790. Fulltekst i vitenarkiv Vis sammendrag

  The Demand Side Management (DSM) introduced in Smart Grid (SG), which depends on load shifting with huge number of devices is presented in this work. The proposed hybrid strategy is the joint implementation of Wingsuit Flying Search (WFSA) algorithm and Artificial Cell Swarm Optimization (ACSO). The searching behavior of WFSA is enhanced by ACSO. Hence, it is named as WFS2ACSO. This technique aims at minimization of electricity bill, power consumption, and Peak Average Ratio (PAR). The daily load change method presented in this manuscript is utilized for defusing the minimization issues. The present method is performed in SG that constitutes three different types of loads on a residential area, a commercial area, and an industrial area. Simulation results demonstrate that the projected DSM methodology achieves considerable savings, as peak load demand of SG decreases. Further, the variation in PAR levels with and without the DSM methodology is also presented. The proposed model is executed on a MATLAB simulation platform with two case studies based on optimization methods like WFSA, WFS2ACSO). The results obtained present the hybridized algorithm effectiveness as compared with other trendsetting optimization techniques like Ant lion optimization (ALO) and particle swarm optimization (PSO).

• Zaman, Sakhi; Khan, Latif Ullah; Hussain, Irshad & Mihet-Popa, Lucian (2022). Fast Computation of Highly Oscillatory ODE Problems: Applications in High Frequency Communication Circuits. Symmetry. ISSN 2073-8994. 14(1), s. 1–12. doi: 10.3390/sym14010115. Fulltekst i vitenarkiv Vis sammendrag

  Two types of algorithms are presented to approximate highly oscillatory and non-oscillatory first order ordinary differential equations. In the first approach, radial basis function interpolation is used to approximate the function f(t,x), then quadrature method is used to evaluate the integral part of the equation. The method is implementable to non-oscillatory first order initial value problems. The second approach is more generic and can approximate highly oscillatory and non-oscillatory initial value problems. Accordingly, the first order initial value problem with oscillatory forcing term is transformed into an integral with oscillatory Fourier kernel. The transformed oscillatory integral is then evaluated numerically by the Levin collocation method. Finally, non-linear form of the initial value problems with oscillatory forcing term is converted into a linear form using Bernoulli’s transformation. The resulting linear oscillatory problem is then computed by the new approaches. To justify accuracy of the algorithms, few numerical examples are added from the literature.

• Normann, Ben David; Ricciardone, Angelo; Hervik, Sigbjørn & Thorsrud, Mikjel (2022). A study of inhomogeneous massless scalar gauge fields in cosmology. International Journal of Modern Physics, Conference Series. ISSN 2010-1945. s. 1378–1883. doi: 10.1142/9789811258251_0199. Fulltekst i vitenarkiv
• Nordgård-Hansen, Ellen Marie; Kishor, Nand; Midttømme, Kirsti; Risinggård, Vetle Kjær & Kocbach, Jan (2021). Case study on optimal design and operation of detached house energy system: Solar, battery, and ground source heat pump. Applied Energy. ISSN 0306-2619. 308. doi: 10.1016/j.apenergy.2021.118370. Vis sammendrag

  Government policy impacts the level of sustainability for which houseowners design and operate their energy system. Consequently, there is a need to consider the sustainability level resulting from different policies, assuming optimal design and operation. The present work focuses on detached residential houses, where the energy system consists of photovoltaic systems for energy generation and batteries and optional ground-source heat pump systems for energy storage. A mixed-integer linear programming model is presented, which takes policies and other constraints into account when optimizing system size and operation. The results allow overall sustainability validation through parameters like self-sufficiency and self-sustainability, as well as a detailed drill-down of the optimal operation. From the analysis, two modes of ground-source heat pump usage are seen. With a feed-in tariff present, its main use is as an energy source, while without this tariff the optimal use is for seasonal energy storage. It is also found that ground-source heat pump systems contribute to increased sustainability, but they may not be economically beneficial for single-family homes having low or medium heating requirements. Demands for heating and cooling change with time and place, as do available area for photovoltaic energy generation and externally available energy sources. Therefore, a detailed analysis of the kind presented here is recommended before new energy policies are implemented. For each specific house or project, this kind of analysis will also be useful to evaluate the sensitivity of an energy system’s performance towards changing policies.

• Islam, Md. Ariful; Singh, Jai Govind; Jahan, Israt; Lipu, M.S. Hossain; Jamal, Taskin & Elavarasan, Rajvikram Madurai [Vis alle 7 forfattere av denne artikkelen] (2021). Modelling and Performance Evaluation of ANFIS Controller-Based Bidirectional Power Management Scheme in Plug-in Electric Vehicles Integrated with Electric Grid. IEEE Access. ISSN 2169-3536. 9, s. 166762–166780. doi: 10.1109/ACCESS.2021.3135190. Fulltekst i vitenarkiv
• Rengasamy, Mageswaran; Gangatharan, Sivasankar; Elavarasan, Rajvikram Madurai & Mihet-Popa, Lucian (2021). Incorporation of Microgrid Technology Solutions to Reduce Power Loss in a Distribution Network with Elimination of Inefficient Power Conversion Strategies . Sustainability. ISSN 2071-1050. 13(24). doi: 10.3390/su132413882. Fulltekst i vitenarkiv
• Jiya, Immanuel Ninma; Ali, Ahmed Mohamed Salem; Huynh, Van Khang; Kishor, Nand & Ciric, Rade (2021). Novel Multisource DC-DC Converter for All-Electric Hybrid Energy Systems. IEEE transactions on industrial electronics (1982. Print). ISSN 0278-0046. 69(12), s. 12934–12945. doi: 10.1109/TIE.2021.3131871.
• Ahmadi, Masoud; Kheyroddin, Ali & Kioumarsi, Mahdi (2021). Prediction models for bond strength of steel reinforcement with consideration of corrosion. Materials Today: Proceedings. ISSN 2214-7853. 45(6), s. 5829–5834. doi: 10.1016/j.matpr.2021.03.263. Fulltekst i vitenarkiv
• Nale, Ruchita; Biswal, Monalisa & Kishor, Nand (2021). A passive communication based islanding detection technique for AC microgrid. International Journal of Electrical Power & Energy Systems. ISSN 0142-0615. 137. doi: 10.1016/j.ijepes.2021.107657.
• Asif, Mohd; Tariq, Mohd; Sarwar, Adil; Hussan, Md. Reyaz; Ahmad, Shafiq F. & Mihet-Popa, Lucian [Vis alle 7 forfattere av denne artikkelen] (2021). A robust multilevel inverter topology for operation under fault conditions. Electronics. ISSN 2079-9292. 10(24), s. 1–18. doi: 10.3390/electronics10243099. Fulltekst i vitenarkiv Vis sammendrag

  Multilevel inverters (MLIs) are new demanding topologies that have low total harmonic distortion (THD) and low voltage stress across the switches make them ideal for medium and high-power applications. The authenticity of semiconductor devices is one of the main concerns for these MLIs to operate properly. With an increment in the number of switches in multilevel inverters, the pos-sibility of the fault also arises. Hence, a reliable 5- level inverter topology with fault-tolerant ability has been proposed. The proposed topology can withstand against of Open Circuit (OC) fault caused when any single switch fails. The proposed configuration is fault-tolerant and reliable as compared to the conventional multilevel inverters. Simulation of the proposed topology is done in MATLAB-Simulink and PLECS software packages, and the results obtained for normal (pre-fault), during the fault, and post-fault conditions are discussed. Experimental results also prove the proposed cell topology's robustness and effectiveness in tolerating OC faults across the switches. Furthermore, a thorough comparison is provided to demonstrate the superiority of the proposed topology in comparison to recently published topologies that have fault-tolerant features

• Srivastava, A.K.; Pandey, Ajay Shekhar; Elavarasan, Rajvikram Madurai; Subramaniam, Umashankar; Mekhilef, Saad & Mihet-Popa, Lucian (2021). A Novel Hybrid Feature Selection Method for Day-Ahead Electricity Price Forecasting. Energies. ISSN 1996-1073. 14(24). doi: 10.3390/en14248455. Fulltekst i vitenarkiv
• Jiya, Immanuel Ninma; Huynh, Van Khang; Ali, Ahmed Mohamed Salem; Kishor, Nand & Ciric, Rade (2021). Novel Isolated Multiple-Input Buck-Boost DC-DC Converter for Renewable Energy Sources, IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society. IEEE (Institute of Electrical and Electronics Engineers). ISSN 978-1-6654-3554-3. doi: 10.1109/IECON48115.2021.9589538.
• Aliyari, Mostafa; Droguett, Enrique Lopez & Ayele, Yonas Zewdu (2021). Uav-based bridge inspection via transfer learning. Sustainability. ISSN 2071-1050. 13(20), s. 1–27. doi: 10.3390/su132011359. Fulltekst i vitenarkiv
• Elavarasan, Rajvikram Madurai Elavarasan; Pugazhendhi, Rishi; Irfan, Muhammad; Mihet-Popa, Lucian; Campana, Pietro Elia & Khan, Irfan Ahmad (2021). A Novel Sustainable Development Goal 7 Composite Index as the Paradigm for Energy Sustainability Assessment: A Case Study from Europe. Applied Energy. ISSN 0306-2619. 307. doi: 10.1016/j.apenergy.2021.118173. Vis sammendrag

  The Sustainable Development Goal 7 endeavors to ameliorate the energy system towards sustainability. Moni-toring the country’s progress to the goal will be of utmost for the government to take suitable actions and thus, constructing a performance monitoring index for Sustainable Development Goal 7 would tune the pace of implementation. This study aims to develop a novel Sustainable Development Goal 7 or Energy Sustainability Composite Index to assess the energy sustainability performance. Since Europe tends to have diverged efforts towards energy sustainability, assessing them with the proposed Sustainable Development Goal 7 composite index would provide the evidence needed for effective sustainable development strategies. By describing Europe, the authors signify 40 European countries and the selection of country depends on the availability of all the data that are required for the energy sustainability assessment. In this study, the analyzed energy sustainability as-pects include clean energy conversion, energy security, energy accessibility, energy intensity and carbon in-tensity. The results show that Iceland, Norway, and Sweden tops in energy sustainability aspects with scores of 0.7313, 0.6967, and 0.6313 (on a scale of 0 to 1), respectively. The proposed Sustainable Development Goal 7 composite index is also compared with the actual Sustainable Development Goal 7 index, which comprises the indicators defined by the United Nations. The prime difference between the proposed Sustainable Development Goal 7 composite index and the actual Sustainable Development Goal 7 index resides in the consideration of energy security and carbon intensity indicators and in the framework designed to evaluate the clean energy prevalence. The evaluated actual Sustainable Development Goal 7 index scores of Germany and France are 0.4915 and 0.4656, respectively. On comparing with the proposed Sustainable Development Goal 7 composite index scores, the scores decreased by 20.9% for Germany and increased by 7.2% for France. The robustness of the proposed composite index relies on reducing the effect of outliers by using a modified min–max methodology, namely Aggregated Normalization based on Maximum and Minimum Outliers for normalization and the subsequent weightage allocation criteria utilized in Analytic Hierarchy Process methodology. Sensitivity analyses high-lighted that the clean energy indicator is the most influencing indicator for the designed composite index. Nevertheless, uncertainty analysis indicates that the weightage scenario has a more prominent influence than various normalization and aggregation methods

• Yohanandhan, Rajaa Vikhram; Elavarasan, Rajvikram Madurai; Pugazhendhi, Rishi; Premkumar, Manoharan; Mihet-Popa, Lucian & Terzija, Vladimir (2021). A holistic review on Cyber-Physical Power System (CPPS) testbeds for secure and sustainable electric power grid – Part – II: Classification, overview and assessment of CPPS testbeds. International Journal of Electrical Power & Energy Systems. ISSN 0142-0615. 137. doi: 10.1016/j.ijepes.2021.107721.
• Yohanandhan, Rajaa Vikhram; Elavarasan, Rajvikram Madurai; Pugazhendhi, Rishi; Premkumar, Manoharan; Mihet-Popa, Lucian & Terzija, Vladimir (2021). A Holistic Review on Cyber-Physical Power System (CPPS) Testbeds for Secure and Sustainable Electric Power Grid – Part – I: Background on CPPS and Necessity of CPPS Testbeds. International Journal of Electrical Power & Energy Systems. ISSN 0142-0615. 136. doi: 10.1016/j.ijepes.2021.107718. Vis sammendrag

  The integration of advanced Information and Communication Technologies (ICTs) in the conventional electric power grid is evolving into a Cyber-Physical Power System (CPPS). The seamless integration of control, communication, and computing operations allow CPPS to be fully monitored and controlled. Threats, vulnerabilities, and catastrophic attacks will intrude as CPPS monitoring, protection, and control functions advance. For the CPPS to operate safely, securely, and efficiently, sustainable cybersecurity solutions must be developed, and the power grid's reliability and resilience must be maintained even when exposed to unfavorable network conditions. While more distributed and renewable energy sources are connected to the grid, cybersecurity helps to ensure the supply of electricity is sustainable and of high quality. The validation of such sustainable cybersecurity analysis goes beyond the traditional power grid network analysis, which means that the test should integrate the physical and cyber system behavior and respond to the network attacks. To analyze the cybersecurity and cyberattacks in the practical CPPS, comprehensive and realistic CPPS testbeds are needed. The heterogeneous nature of the CPPS concept urges multidisciplinary testbeds with various functions and capabilities to evaluate the new cyber-attacks, vulnerabilities, and threats in CPPS. Using this CPPS testbed framework, the different types of cyber-attack can be detected, and detection algorithm can be evaluated, and helps to enhance the development of sustainable cybersecurity defenses for realistic CPPS environment with the increasingly dense integration of distributed energy resources (DERs). This Part-I paper review the CPPS testbeds in the view of the physical power system layer, sensing layer, communication layer, control layer, application layer, test platforms, and research goals with the fusion of cyber and physical systems. In addition, this review presented an overview, structure, and application-based evaluation of existing testbeds from the industry and institutions. The various research areas in CPPS are reviewed first to show the research trends on different aspects of CPPS which have gained significant attention in the past decade. The necessity of testbeds for cyberattacks and sustainable cybersecurity analysis in CPPS are then described. Finally, the NIST framework for CPS, CPPS domains, and research areas are presented. Further the Part-II paper will review the classification, overview, and assessment of CPPS testbeds.

• Yohanandhan, Rajaa Vikhram; Elavarasan, Rajvikram Madurai; Pugazhendhi, Rishi; Manoharannd, Premkumar; Mihet-Popa, Lucian & Zhao, Zumbo [Vis alle 7 forfattere av denne artikkelen] (2021). A Specialized Review On Outlook of Future Cyber-Physical Power System (CPPS) testbeds for securing electric power grid. International Journal of Electrical Power & Energy Systems. ISSN 0142-0615. 136. doi: 10.1016/j.ijepes.2021.107720. Vis sammendrag

  The Cyber-Physical Power System (CPPS) is a new type of system in which the traditional energy system is integrated into the information network with control systems, communication networks, and computational units. CPPS is the foundation of a long-term transformation of energy management that will fundamentally alter the perspective and application pattern of traditional energy research. The strong interactions between systems in a CPPS introduce new challenges in maintaining high supply security, as new factors can affect the overall security of the power system. Such factors include cybersecurity, the behaviour and constraints of neighbouring energy systems, and the dynamics of interactions between the various systems. Integrating computing, com-munications, and control at all levels of electrical energy generation, transmission, distribution, utilisation, and storage in CPPS increases vulnerabilities and complicates security. Security studies must reflect the character-istics of the CPPS infrastructure in actual testing environments that support the interfacing of real-world hard-ware devices. CPPS testbeds are effective in this context because they provide testing capabilities for evaluating the synergistic relationship between physical and virtual components in controlled environments. Security- oriented CPPS testbeds are invaluable for performing cybersecurity and cyberattack analyses, identifying sys-tem threats and vulnerabilities in various layers of CPPS, implementing intrusion detection and prevention al-gorithms, and evaluating the efficacy of mitigation techniques without imposing excessive economic burdens or posing safety risks. This paper provides a comprehensive review of CPPS testbeds from the standpoint of the physical power system layer, cyber system layer, and cyber-physical fusion layer. Following a brief description of the importance of testbeds for cybersecurity research in CPPS, and a brief classification of existing CPPS testbeds for cyberattacks, and cybersecurity analysis in CPPS is presented. A detailed overview of the outlook for future CPPS testbeds in terms of communication, control, computing, and educational perspective is provided. Finally, the work is concluded with future research directions for developing a secure electric power grid.

• Zouinkhi, Ahmed; Flah, Aymen & Mihet-Popa, Lucian (2021). A Novel Energy-Safe Algorithm for Enhancing the Battery Life for IoT Sensors’ Applications. Energies. ISSN 1996-1073. 14(20). doi: 10.3390/en14206613. Fulltekst i vitenarkiv Vis sammendrag

  Energy safe is mandatory for all isolated IoT tools, as in long way roads, mountains, or even in smart cities. If increasing the lifetime of these tools, the rentability of the global network loop becomes more efficient. Therefore, this paper's base main is to present a new approach for saving energy inside the source nods by supervising the state of energy inside each source nod and calculating the duty cycle factor. The relationship between these parameters is based on an optimization problem formulation. In this respect, the present paper is designed to propose a new approach that deals with increasing the lifetime of the Wireless Sensors Network (WSN) attached nodes, as fixed in the application. The newly devised design rests on implementing the IEEE 802.15.4 standard beacon-enabled mode, involving a cluster tree topology. Accordingly, every subgroup is allotted to apply a specifically different duty cycle, depending on the battery's remaining energy level, which contributes to creating a wide range of functional modes. Hence, various thresholds are defined. Simulation results are proving the efficiency of the proposed approach and show the energetic benefit. The proposed flowchart has minimized the consumed energy for the WSN, which improve the battery lifetime and enhance the IoT applications robustness. Simulations and experiments have been carried out under different conditions and the results proved that the proposed method is a viable solution.

• Achuthan, Kamal; Hay, Nick; Aliyari, Mostafa & Ayele, Yonas Zewdu (2021). A digital information model framework for uas-enabled bridge inspection. Energies. ISSN 1996-1073. 14(19). doi: 10.3390/en14196017. Fulltekst i vitenarkiv
• Mahesh, Aganti; Bharatiraja, Chokkalingam & Mihet-Popa, Lucian (2021). Inductive Wireless Power Transfer Charging for Electric Vehicles–A Review. IEEE Access. ISSN 2169-3536. 9, s. 13667–137713. doi: 10.1109/ACCESS.2021.3116678. Fulltekst i vitenarkiv Vis sammendrag

  Considering a future scenario in which a driverless Electric Vehicle (EV) needs an automatic charging system without human intervention. In this regard, there is a requirement for a fully automatable, fast, safe, cost-effective, and reliable charging infrastructure that provides a profitable business model and fast adoption in the electrified transportation systems. These qualities can be comprehended through wireless charging systems. Wireless Power Transfer (WPT) is a futuristic technology with the advantage of flexibility, convenience, safety, and the capability of becoming fully automated. In WPT methods resonant inductive wireless charging has to gain more attention compared to other wireless power transfer methods due to high efficiency and easy maintenance. This literature presents a review of the status of Resonant Inductive Wireless Power Transfer Charging technology also highlighting the present status and its future of the wireless EV market. First, the paper delivers a brief history throw lights on wireless charging methods, highlighting the pros and cons. Then, the paper aids a comparative review of different type’s inductive pads, rails, and compensations technologies done so far. The static and dynamic charging techniques and their characteristics are also illustrated. The role and importance of power electronics and converter types used in various applications are discussed. The batteries and their management systems as well as various problems involved in WPT are also addressed. Different trades like cyber security economic effects, health and safety, foreign object detection, and the effect and impact on the distribution grid are explored. Prospects and challenges involved in wireless charging systems are also highlighting in this work. We believe that this work could help further the research and development of WPT systems.

• Bui, Tri Quang; Cao, Vinh Duy; Wang, Wei; Nguyen, Hung Thanh & Kjøniksen, Anna-Lena (2021). Energy Lost in a Hydrogel Osmotic Engine Due to a Pressure Drop. Industrial & Engineering Chemistry Research. ISSN 0888-5885. 60(36), s. 13348–13357. doi: 10.1021/acs.iecr.1c00409. Fulltekst i vitenarkiv
• Biswal, Saubhagya; Shankar, Gauri; Elavarasan, Rajvikram Madurai & Mihet-Popa, Lucian (2021). Optimal Allocation/Sizing of DGs/Capacitors in Reconfigured Radial Distribution System using Quasi-Reflected Slime Mould Algorithm. IEEE Access. ISSN 2169-3536. 9, s. 125658–125677. doi: 10.1109/ACCESS.2021.3111027. Fulltekst i vitenarkiv
• Chakraborty, Suprava; Verma, Sumit; Salgotra, Aprajita; Elavarasan, Rajvikram Madurai Elavarasan; Elangovan, Devaraj & Mihet-Popa, Lucian (2021). Solar-Based DG Allocation Using Harris Hawks Optimization While Considering Practical Aspects. Energies. ISSN 1996-1073. 14(16). doi: 10.3390/en14165206. Fulltekst i vitenarkiv Vis sammendrag

  The restructuring of power systems and the ever-increasing demand for electricity have given rise to congestion in power networks. The use of distributed generators (DGs) may play a significant role in tackling such issues. DGs may be integrated with electrical power networks to regulate the drift of power in the transmission lines, thereby increasing the power transfer capabilities of lines and improving the overall performance of electrical networks. In this article, an effective method based on the Harris hawks optimization (HHO) algorithm is used to select the optimum capacity, number, and site of solar-based DGs to reduce real power losses and voltage deviation. The proposed HHO has been tested with a complex benchmark function then applied to the IEEE 33 and IEEE 69 bus radial distribution systems. The single and multiple solar-based DGs are optimized for the optimum size and site with a unity power factor. It is observed that the overall performance of the systems is enhanced when additional DGs are installed. Moreover, considering the stochastic and sporadic nature of solar irradiance, the practical size of DG has been suggested based on analysis that may be adopted while designing the actual photovoltaic (PV) plant for usage. The obtained simulation outcomes are compared with the latest state-of-the-art literature and suggest that the proposed HHO is capable of processing complex high dimensional benchmark functions and has capability to handle problems pertaining to electrical distribution in an effective manner.

• Wu, Huiqiong; Zhang, Yi; Kjøniksen, Anna-Lena; Zhou, Xuechang & Zhou, Xuelong (2021). Wearable Biofuel Cells: Advances from Fabrication to Application. Advanced Functional Materials. ISSN 1616-301X. 31(48). doi: 10.1002/adfm.202103976.
• Savio Abraham, Dominic; Verma, Rajesh; Lakshmikhandan, Kanagaraj; Rajan Giri Thulasi, Sundar; Narayanamoorthi, Rajamanickam & Chokkalingam, Bharatiraja [Vis alle 8 forfattere av denne artikkelen] (2021). Electric Vehicles Charging Stations’ Architectures, Criteria, Power Converters, and Control Strategies in Microgrids. Electronics. ISSN 2079-9292. 10(16). doi: 10.3390/electronics10161895. Fulltekst i vitenarkiv Vis sammendrag

  The usage of electric vehicles (EV) has been increasing over the last few years due to a rise in fossil fuel prices and the rate of increasing carbon dioxide (CO2) emissions. EV-charging stations are powered by existing utility power grid systems, increasing the stress on the utility grid and the load demand at the distribution side. DC grid-based EV charging is more efficient than AC distribution because of its higher reliability, power conversion efficiency, simple interfacing with renewable energy sources (RESs), and integration of energy storage units (ESU). RES-generated power storage in local ESU is an alternative solution for managing the utility grid demand. In addition, to maintain the EV charging demand at the microgrid levels, energy management and control strategies must carefully power the EV battery charging unit. In addition, charging stations require dedicated converter topologies, control strategies, and need to follow set levels and standards. Based on EV, ESU, and RES accessibility, different types of microgrid architecture and control strategies are used to ensure optimum operation at the EV-charging point. Based on the above said merits, this review paper presents different RES-connected architecture and control strategies used in EV-charging stations. It highlights the importance of different charging station architectures with current power converter topologies proposed in the literature. In addition, a comparison of microgrid-based charging station architecture with its energy management, control strategies, and charging converter controls are also presented. The different levels and types of charging stations used for EV charging, in addition to controls and connectors used, are also discussed. An experiment-based energy management strategy was developed to control power flow among the available sources and charging terminals for the effective utilization of generated renewable power. The main motive of the EMS and its control is to maximize the usage of RES consumption. This review also provides the challenges and opportunities in EV-charging, and parameters in selecting appropriate charging stations.

• Das, Soumya Ranjan; Ray, Prakash K.; Sahoo, Arun Kumar; Ramasubbareddy, Somula; Babu, Thanikanti Sudhakar & Nallapaneni, Manoj Kumar [Vis alle 8 forfattere av denne artikkelen] (2021). A Comprehensive Survey on Different Control Strategies and Applications of Active Power Filters for Power Quality Improvement. Energies. ISSN 1996-1073. 14(15). doi: 10.3390/en14154589. Fulltekst i vitenarkiv
• Ali, Muhammad; Hafeez, Ghulam; Farooq, Ajmal; Shafiq, Zeeshan; Faheem, Ali & Usman, Muhammad [Vis alle 7 forfattere av denne artikkelen] (2021). A Novel Control Approach to Hybrid Multilevel Inverter for High Power Applications. Energies. ISSN 1996-1073. 14(15). doi: 10.3390/en14154563. Fulltekst i vitenarkiv
• Jiya, Immanuel Ninma; Huynh, Khang; Kishor, Nand & Ciric, Rade (2021). Four Quadrant Switch Based Multiple-Input DC-DC Converter, 2021 IEEE Energy Conversion Congress and Exposition – Asia (ECCE-Asia 2021). IEEE conference proceedings. ISSN 978-1-7281-6344-4. s. 2199–2204. doi: 10.1109/ECCE-Asia49820.2021.9479432.
• Madasamy, P.; Verma, Rajesh; Bharatiraja, C.; Barnabas, Paul Glady J; Srihari, T. & Munda, Josiah Lange [Vis alle 7 forfattere av denne artikkelen] (2021). Hybrid Multicarrier Random Space Vector PWM for the Mitigation the Acoustic Noise. Electronics. ISSN 2079-9292. 10(12). doi: 10.3390/electronics10121483. Fulltekst i vitenarkiv
• Bui, Tri Quang; Magnussen, Ole Morten; Cao, Vinh Duy; Wang, Wei; Kjøniksen, Anna-Lena & Aaker, Olav (2021). Osmotic engine converting energy from salinity difference to a hydraulic accumulator by utilizing polyelectrolyte hydrogels. Energy. ISSN 0360-5442. 232, s. 1–7. doi: 10.1016/j.energy.2021.121055. Fulltekst i vitenarkiv
• Tamilarasu, Karthick; Sathiasamuel, Charles Raja; Nesamalar Josep, Jeslin Drusila; Elavarasan, Rajvikram Madurai & Mihet-Popa, Lucian (2021). Reinforced Demand Side Management for Educational Institution with incorporation of User’s Comfort. Energies. ISSN 1996-1073. 14(10). doi: 10.3390/en14102855. Fulltekst i vitenarkiv Vis sammendrag

  Soaring energy demand and the establishment of various trends in the energy market have paved the way for developing demand-side management (DSM) from the consumer side. This paper proposes a reinforced DSM (RDSM) approach that uses an enhanced binary gray wolf optimization algorithm (EBGWO) that benefits the consumer premises with load scheduling, and peak demand reduction. To date, DSM research has been carried out for residential, commercial and industrial loads, whereas DSM approaches for educational loads have been less studied. The institution load also consumes much utility energy during peak hours, making institutional consumers pay a high amount of cost for energy consumption during peak hours. The proposed objective is to reduce the total electricity cost and to improve the operating efficiency of the entire load profile at an educational institution. The proposed architecture integrates the solar PV (SPV) generation that supplies the user-comfort loads during peak operating hours. User comfort is determined with a metric termed the user comfort index (UCI). The novelty of the proposed work is highlighted by modeling a separate class of loads for temperature-controlled air conditioners (AC), supplying the user comfort loads from SPV generation and determining user comfort with percentage UCI. The improved transfer function used in the proposed EBGWO algorithm performs faster in optimizing nonlinear objective problems. The electricity price in the peak hours is high compared to the offpeak hours. The proposed EBGWO algorithm shift and schedules the loads from the peak hours to off-peak hours, and incorporating SPV in satisfying the user comfort loads aids in reducing the power consumption from the utility during peak hours. Thus, the proposed EBGWO algorithm greatly helps the consumer side decrease the peak-to-average ratio (PAR), improve user comfort significantly, reduce the peak demand, and save the institution’s electricity cost by USD 653.046.

• Lynch, Matthew; Andersson, Gunnar & Johansen, Frode Ramstad (2021). Merging systems thinking with entrepreneurship: Shifting students’ mindsets towards crafting a more sustainable future. Sustainability. ISSN 2071-1050. 13(9), s. 1–16. doi: 10.3390/su13094946. Fulltekst i vitenarkiv Vis sammendrag

  The major challenges confronting humanity are systemic in nature: climate change, pollution, poverty, and inequality. Entrepreneurship fails to tackle these challenges, and ‘creative destruction’ is mostly just leading to the destruction of the natural world that we inhabit. The present economic, financial, and productive systems can and should be transformed to lead and power a shift towards sustainability. If we are to reverse the course of destruction that current capitalist systems are creating, we need to introduce more of a systems perspective into entrepreneurial education. This article addresses how merging systems thinking and entrepreneurship can be used to nudge students towards sustainability. Through a single case study, we argue that a practice-based pedagogy that combines perspectives from entrepreneurship and systems thinking can be used as a catalyst to bring about local changes in business models by making the business case go beyond the individual organization and seeing entrepreneurship as being about creating more sustainable business systems.

• CHITTOOR, PRITHVI KRISHNA; Chokkalingam, Bharatiraja & Mihet-Popa, Lucian (2021). A Review on UAV Wireless Charging: Fundamentals, Applications, Charging Techniques and Standards. IEEE Access. ISSN 2169-3536. 9. doi: 10.1109/ACCESS.2021.3077041. Fulltekst i vitenarkiv Vis sammendrag

  Unmanned Aerial Vehicles (UAVs) are becoming increasingly popular for applications such as inspections, delivery, agriculture, surveillance, and many more. It is estimated that, by 2040, UAVs/drones will become a mainstream delivery channel to satisfy the growing demand for parcel delivery. Though the UAVs are gaining interest in civil applications, the future of UAV charging is facing a set of vital concerns and open research challenges. Considering the case of parcel delivery, handling countless drones and their charging will become complex and laborious. The need for non-contact based multi-device charging techniques will be crucial in saving time and human resources. To efficiently address this issue, Wireless Power Transmission (WPT) for UAVs is a promising technology for multi-drone charging and autonomous handling of multiple devices. In the literature of the past five years, limited surveys were conducted for wireless UAV charging. Moreover, vital problems such as coil weight constraints, comparison between existing charging techniques, shielding methods and many other key issues are not addressed. This motivates the author in conducting this review for addressing the crucial aspects of wireless UAV charging. Furthermore, this review provides a comprehensive comparative study on wireless charging's technical aspects conducted by prominent research laboratories, universities, and industries. The paper also discusses UAVs' history, UAVs structure, categories of UAVs, mathematical formulation of coil and WPT standards for safer operation.

• Aliyari, Mostafa; Ashrafi, Behrooz & Ayele, Yonas Zewdu (2021). Drone-based bridge inspection in harsh operating environment: Risks and safeguards. International Journal on Transport Development and Integration. ISSN 2058-8305. 5(2), s. 118–135. doi: 10.2495/TDI-V5-N2-118-135. Fulltekst i vitenarkiv Vis sammendrag

  The inability to effectively and systematically identify and measure the damage in bridges will lead to an acceleration and dangerous deterioration of the health state of these structures. To repair and replace the aging and damaged bridge infrastructures, and prevent catastrophic bridge collapse, there is an urgent need to develop reliable, innovative, and efficient approaches to the performance assessment and inspection of bridges. Unmanned Aerial Vehicles (UAVs), also knowns as drone, technology has found its way into a number of civilian applications including inspection in the last 20 years, predominantly due to lower cost and tangible scientific improvements. The intent of this paper is to map the current state-of-the-art drone-enabled bridge inspection practices and investigated their associated hazards and risks. This paper will integrate scenario prediction and, assess hazards as well as the social and environmental loss in the case of drone-enabled bridge inspection. Further, this paper will follow rather closely a three-phase process: hazard identification, hazard analysis, and hazard evaluation, all executed with qualitative data and methods by experts of a variety of fields, methodologies for recognition of the impact of cold operating environment on the performance of drone and drone -pilots, creative interpretation of the hazard factors of identifiable problems. The proposed Preliminary Hazard Analysis (PHA) is exemplified via drone-enabled inspection of Håkenby bridge, which is located in the Viken county, in the eastern part of Norway.

• Madasamy, P.; Verma, Rajesh; Rameshbabu, A; Murugesan, A; Umamageswari, R & Munda, Josiah Lange [Vis alle 8 forfattere av denne artikkelen] (2021). Neutral Point Clamped Transformerless Multilevel Converter for Grid-Connected Photovoltaic System. Electronics. ISSN 2079-9292. 10(8). doi: 10.3390/electronics10080977. Fulltekst i vitenarkiv Vis sammendrag

  Transformer-less (TL) inverter topologies have elicited further special treatment in photo-voltaic (PV) power system as they provide high efficiency and low cost. Neutral point clamped (NPC) multilevel-inverter (MLI) topologies-based transformer-less are being immensely used in grid-connected medium-voltage high-power claims. Unfortunately, these topologies such as NPC-MLI, full-bridge inverter with DC bypass (FB-DCBP) suffer from the shoot-through problem on the bridge legs, which affect the reliability of the implementation. Based on the previous above credits, a T type neutral point clamped (TNP) - MLI (TNP-MLI) with Transformer-less topology called TL-TNP-MLI is presented to be an alternate which can be suitable in the grid connected PV power generation systems. The suggested TL-TNP-MLI topologies free from inverter bridge legs shoot-through burden, switching frequency common-mode current (CMC), and leakage current. The control system of the grid interface with hysteresis current control (HCC) strategy is proposed. The effectiveness of the proposed PV connected transformer-less TNP-MLI topology with different grid and PV scenario has been verified through the MATLAB/Simulink simulation model and field-programmable gate area (FPGA) based experimental results for a 1.5 kW system.

• Ali, Ahmad; Syed Abdul Rahman, Kashif; Ali, Nasir; Akhtar, Rasool; Sheroze, Liaquat & Padmanaban, Sanjeevikumar [Vis alle 7 forfattere av denne artikkelen] (2021). Controller Parameters Optimization for Multi-Terminal DC Power System Using Ant Colony Optimization. IEEE Access. ISSN 2169-3536. 9, s. 59910–59919. doi: 10.1109/ACCESS.2021.3073491. Fulltekst i vitenarkiv Vis sammendrag

  Voltage source converter based multi – terminal DC grids (VSC – MTDC) are widely used for integration of renewable resources. Control of these grids requires vector control method, which includes inner and outer current controllers, tuning of these controllers is very important. Conventionally used tuning methods consider approximated linear model to tune the proportional – integral (PI) parameters of voltage source converter (VSC) which fails to produce optimum disturbance rejection results. In this research an Ant Colony Optimization (ACO) technique is used to get the optimum parameters of inner and outer power control layers for multi – terminal DC system. ACO is applied simultaneously on inner and outer control layers and results are compared with classical tuning method. In this paper, a four terminal VSC – MTDC has been used under different sequence of events of disturbances e.g. load change on AC side, active power reference change for inverter and rectifier mode and disconnection of one terminal to evaluate the robustness of ACO algorithm with respect to classical method. The proposed tuning method gives superior results under different disturbance compared to conventional method.

• Kamalesh, M.S.; Senthilnathan, Nattuthurai; Bharatiraja, Chokkalingam & Mihet-Popa, Lucian (2021). Mitigation of Circulating Current With Effective Energy Management In Low Power PV-FC-Battery-Microgrid. International Transactions on Electrical Energy Systems. ISSN 2050-7038. 31(6). doi: 10.1002/2050-7038.12899.
• Quan, Zhilong; Luo, Chunyang; Zhu, Bitong; Zhao, Chungui; Yang, Mingyi & Bjørås, Magnar [Vis alle 8 forfattere av denne artikkelen] (2021). Synthesis and antimicrobial activities of chitosan/polypropylene carbonate-based nanoparticles. RSC Advances. ISSN 2046-2069. 11(17), s. 10121–10129. doi: 10.1039/d0ra09257f. Fulltekst i vitenarkiv
• Bui, Tri Quang; Cao, Vinh Duy; Wang, Wei & Kjøniksen, Anna-Lena (2021). Recovered Energy from Salinity Gradients Utilizing Various Poly(Acrylic Acid)-Based Hydrogels. Polymers. ISSN 2073-4360. 13(4), s. 1–16. doi: 10.3390/polym13040645. Fulltekst i vitenarkiv
• Pilehvar, Shima; Arnhof, Marlies; Erichsen, Andreas; Valentini, Luca & Kjøniksen, Anna-Lena (2021). Investigation of severe lunar environmental conditions on the physical and mechanical properties of lunar regolith geopolymers. Journal of Materials Research and Technology (JMR&T). ISSN 2238-7854. 11, s. 1506–1516. doi: 10.1016/j.jmrt.2021.01.124. Fulltekst i vitenarkiv
• Subramanian, Senthilkumar; Chandramohan, Sankaralingam; Elavarasan, Rajvikram Madurai; Vijayaraghav, Raghavendra Rajan; Raju, Kannadasan & Mihet-Popa, Lucian (2021). An Evaluation on Wind Energy Potential using Multi-Objective Optimization-based Non-dominated Sorting Genetic Algorithm III. Sustainability. ISSN 2071-1050. 13. doi: 10.3390/su13010410. Fulltekst i vitenarkiv Vis sammendrag

  Wind energy is an abundant renewable energy resource that is extensively used worldwide in recent years. The present work proposes a new Multi-Objective Optimization (MOO) based genetic algorithm (GA) model for a wind energy system. The proposed algorithm consists of non-dominated sorting which focuses to maximize the power extraction of the wind turbine and the lifetime of the battery. Also, the performance characteristics of the wind turbine and battery energy storage system (BESS) are analyzed specifically torque, current, voltage, state of charge (SOC), and internal resistance. The complete analysis is carried out in the MATLAB/Simulink platform. The simulated results are compared with existing optimization techniques such as single-objective, multi-objective, and non-dominating sorting GA II (Genetic Algorithm-II). From the observed results, the NSGA III optimization algorithm offers superior performance notably higher turbine power output with higher torque rate, lower speed variation, and lesser degradation rate of the battery. This result attested to the fact that the proposed optimization tool can extract a higher rate of power from a self-excited induction generator (SEIG) when compared with a conventional optimization tool.

• Lütge, Christopher; Poszler, Franziska; Acosta, Aida Joaquin; Danks, David; Gottehrer, Gail & Mihet-Popa, Lucian [Vis alle 7 forfattere av denne artikkelen] (2021). AI4People: Ethical Guidelines for the Automotive Sector – Fundamental Requirements and Practical Recommendations. International Journal of Technoethics (IJT). ISSN 1947-3451. 12(1), s. 101–125. doi: 10.4018/IJT.20210101.oa2. Fulltekst i vitenarkiv
• Szczotok-Piechaczek, Anna Maria; Madsen, Dan; Serrano, Angel; Carmona, Manuel; Van Hees, Patrick & Rodriguez, Juan F. [Vis alle 7 forfattere av denne artikkelen] (2021). Flame retardancy of rigid polyurethane foams containing thermoregulating microcapsules with phosphazene-based monomers. Journal of Materials Science. ISSN 0022-2461. 56, s. 1172–1188. doi: 10.1007/s10853-020-05389-6. Fulltekst i vitenarkiv
• Aliyari, Mostafa; Ashrafi, Behrooz & Ayele, Yonas Zewdu (2021). Hazards identification and risk assessment for UAV– assisted bridge inspections. Structure and Infrastructure Engineering. ISSN 1573-2479. s. 1–17. doi: 10.1080/15732479.2020.1858878. Fulltekst i vitenarkiv
• Huang, Dou; Li, Jia; Wu, Hong & Aaker, Olav (2020). Experimental Investigation on the Vapor Chambers with Sintered Copper Powder Wick. Journal of Thermal Science. ISSN 1003-2169. doi: 10.1007/s11630-020-1366-3.
• Rawa, Muhyaddin; Alkhalaf, Salem; Mihet-Popa, Lucian; Aboelsaud, Raef; Khurshaid, Tahir & Hassan, Abdurrahman Shuaibu [Vis alle 8 forfattere av denne artikkelen] (2020). An Efficient Scheme for Determining the Power Loss in Wind-PV Based on Deep Learning. IEEE Access. ISSN 2169-3536. 9, s. 9481–9492. doi: 10.1109/ACCESS.2020.3046687. Fulltekst i vitenarkiv
• Rengasamy, Mageswaran; Gangatharan, Sivasankar; Elavarasan, Rajvikram Madurai & Mihet-Popa, Lucian (2020). The motivation for incorporation of microgrid technology in rooftop solar photovoltaic deployment to enhance energy economics. Sustainability. ISSN 2071-1050. 12(24). doi: 10.3390/su122410365. Fulltekst i vitenarkiv Vis sammendrag

  Deployment of rooftop solar PV technology in domestic premises plays a significant role in accomplishing renewable energy transformation. Majority of domestic consumers still do not have a positive perception about adopting rooftop solar PV technology, due to its high capital cost and prolonged payback period. In this aspect, the proposed work identifies the factors causing energy deprivation in the present distribution and utilization system. To explicitly express the importance of the present work, an extensive case study based on Indian scenario has been carried out to investigate where the losses occur in the existing distribution system and how the solar power and its storage system have been ineffectively utilized. The deep investigation has thrown light on several issues that lead to the performance deterioration of PV technology. Finally, in this work, a scheme to incorporate hybrid microgrid technology in the domestic distribution network has been proposed to effectively manage the distribution system and to efficiently utilize solar power and its storage systems. The real-time electricity tariff data have been taken for cost comparison and payback period calculations to prove the effectiveness of the proposed method. A crucial comparisons have been presented based on energy saving and CO2 emission reduction strategies.

• Ayele, Yonas Zewdu; Aliyari, Mostafa; Griffiths, David & Droguett, Enrique López (2020). Automatic Crack Segmentation for UAV-assisted Bridge Inspection. Energies. ISSN 1996-1073. 13(23). doi: 10.3390/en13236250. Fulltekst i vitenarkiv

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• Mihet-Popa, Lucian (2023). SMART GRIDS TECHNOLOGY AND APPLICATIONS. IntechOpen. ISBN 978-1-80355-685-7. 182 s. Vis sammendrag

  This book provides a comprehensive overview of smart grid technology. It contains six chapters organized into three sections: “AC-DC Smart Hybrid Microgrid: Modelling, Control and Applications”, “Smart Distribution Systems: Methodologies, Realtime Platforms and Testing Methods”, and “Energy Storage Systems and Their Applications in Smart Grids”. Chapters address such topics as the advantages and disadvantages of AC/DC hybrid microgrids, DER components in an AC microgrid, methodologies for solving the reconfiguration and reactive power compensation dispatch in a smart distribution network, digital twin types, the different types of energy storage systems, and much more.

• Mihet-Popa, Lucian & Saponara, Sergio (2021). Power Converters, Electric Drives and Energy Storage Systems for Electrified Transportation and Smart Grid. MDPI. ISBN 978-3-0365-1936-4. 217 s. Vis sammendrag

  This book is a printed version of the Special Issue entitled “Power Converters, Electric Drives and Energy Storage Systems for Electrified Transportation and Smart Grid” on MDPI Energies journal. It presents 10 accepted papers from 18 submitted, as well as an Editorial, with authors from Europe, US, Asia, and Africa. The published papers are related to the emerging trends in solar power, energy storage, electric drives, and power electronic converters based on specific optimization and control methods and algorithms, with focus on electric vehicles and charging stations-based RES towards smart/micro grids. An extensive exploitation of renewable energy sources is foreseen for smart grid, as well as a close integration with the energy storage and recharging issues of the electrified transportation systems. It is expected that by 2050, around 65%–70% of the world’s population to live in urban areas. As our cities become bigger and smarter, this trend leads to new opportunities for specialized and flexible electric vehicles (EVs) designs, new vehicle architectures in order to ensure urban-readiness, such as compatibility with charging infrastructure, appropriate range, different implementation levels of infrastructure, and smart technology. In the next-generation of EVs, power and efficiency are critical. These factors drive the need for new power electronic converters, optimization of powertrain design and power management solutions to optimize system efficiency. Based on these assumptions, the huge interest coming from industry and research centers, and following our previous successful Special Issue with more than 20 papers published, which acquired in the last 3 years more than 400 citations and 50,000 views, we decided to open a new Special Issue. The Special Issue, entitled “Power Converters, Electric Drives and Energy Storage Systems for Electrified Transportation and Smart Grid” on MDPI Energies presents 10 accepted papers from 18 submitted, as well as an Editorial, with authors from Europe, US, Asia, and Africa. The published papers are related to the emerging trends in solar power, energy storage, electric drives and power electronic converters based on specific optimization and control methods and algorithms, with focus on electric vehicles and charging stations-based RES towards smart/micro grids. An extensive exploitation of renewable energy sources is foreseen for smart grid, as well as a close integration with the energy storage and recharging issues of the electrified transportation systems. Innovation at both algorithmic and hardware (i.e., power converters, electric drives, electronic control units, energy storage modules, and charging stations) levels are also proposed.

• Saponara, Sergio; Mihet-Popa, Lucian & Saletti, Roberto (2021). DC & Hybrid Micro-Grids. MDPI. ISBN 978-3-0365-1975-3. 173 s. Vis sammendrag

  This book is a printed version of the papers published in the Special Issue “DC & Hybrid Microgrids” of Applied Sciences. This Special Issue, co-organized by the University of Pisa, Italy, and Østfold University College in Norway, has collected nine papers and the editorial, from 28 submitted, with authors from Asia, North America, and Europe. The published articles provide an overview of the most recent research advances in direct current (DC) and hybrid microgrids, exploiting the opportunities offered by the use of renewable energy sources, battery energy storage systems, power converters, innovative control, and energy management strategies.

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• Andersson, Gunnar (2024). Fra Japan og Deming/Senge til Obeya 2.0 og Edmondson/Wig.
• Johansen, Frode Ramstad & Leister, Eivind Andre (2024). Felles innovasjonsøkosystem for studenter ved HiØ og NMB.
• Johansen, Frode Ramstad & Kringen, Pedro (2024). Trustworthy AI Lab.
• Johansen, Frode Ramstad & Eidesgaard, Veronica (2024). Når sykepleie- og innovasjonsstudenter jobber sammen finner vi nye løsninger. Fredriksstad Blad.
• Johansen, Frode Ramstad & Andersson, Gunnar (2024). Sammen om helhetlige tjenester - invitasjon til samarbeid om utvikling.
• Andersson, Gunnar (2024). Collaboration with puclic and private sector - Connecting global trends with regional value creation in project-based learning.
• Andersson, Gunnar (2024). Nullfeil tankegang / morgendagens sykehus.
• Andersson, Gunnar & Johansen, Frode Ramstad (2024). Visit Fredrikstad & Hvaler er en investering i utvikling og for byen. Fredriksstad Blad.
• Mathisen, Therese Fostervold & Johansen, Frode Ramstad (2024). The Impact of Apps Designed to Reduce Food Waste: can it help Improve Healthy Eating, and reduce Financial Expenses and Personal Food Waste?
• Ahmed, Ibrahim; Pedersen, Andreas & Mihet-Popa, Lucian (2024). Smart Microgrid Optimization using Deep Reinforcement Learning by utilizing the Energy Storage Systems. Vis sammendrag

  The need for power is expanding quickly, and as fossil fuels are depleted, alternatives based on renewable energy are emerging. In recent years, microgrids, which are based on distributed generation and storage systems, have been on an increasing trend. This generates various new opportunities, one of which is the capacity to monitor, control, and regulate the energy flow inside and outside of the microgrid. By making microgrid’s distributed energy resources (DERs) and energy storage components economically viable with artificial intelligence and machine learning incorporated into the cost-optimization process, the demand for and growth of these technologies will be accelerated significantly. This paper focuses on employing reinforcement learning (RL) algorithms to control energy flow in an AC microgrid. By incorporating artificial intelligence and machine learning into the energy management system (EMS), the paper aims to optimize costs and facilitate the integration of renewable energy sources. The RL agent is designed to trade energy with the main grid, taking advantage of the energy storage system and achieving cost savings. The RL agent is tested using real spot prices data in Norway from a simulation model that combines Python and MATLAB-Simulink software programs for efficient co-simulation technique. Results show significant cost savings of around 14% for a simple model and 7.5% for a complex dynamic model. 10.1109/SGRE59715.2024.10428874

• Johansen, Frode Ramstad (2023). Silje Waters og de 80 kommunale planene. Fredriksstad Blad.
• Kjøniksen, Anna-Lena (2023). Morran i Østfold - Hvorfor fikk vi ikke lyspæra til å virke? [Radio]. NRK Radio - Distriktprogram Østfold.
• Kjøniksen, Anna-Lena (2023). Abels Tårn. [Radio]. NRK Radio.
• Kjøniksen, Anna-Lena (2023). Abels Tårn. [Radio]. NRK Radio.
• Tellnes, Lars Gunnar Furelid; Kjøniksen, Anna-Lena & Pamies, Ramon Francisco Porras (2023). Life cycle assessment of tunicate burger.
• Tellnes, Lars Gunnar Furelid; Pamies, Ramon Francisco Porras; Kjøniksen, Anna-Lena & Næss, Johann K (2023). Declaring environmental performance with reuse and recycling business approaches for small and medium sized enterprises.
• Tellnes, Lars Gunnar Furelid; Koch, Christian; Torgersen, Mirielle & Kjøniksen, Anna-Lena (2023). Value capture from low embodied emissions of buildings a business model innovation perspective.
• Tellnes, Lars Gunnar Furelid & Kjøniksen, Anna-Lena (2023). Metrics for absolute environmentally sustainable foods – case on tunicate burger.
• Johansen, Frode Ramstad (2023). HiØ-studenter bygger bro. [TV]. NRK.
• Leister, Eivind Andre (2023). Sustainability and project management.
• Leister, Eivind Andre; Andersson, Gunnar; Hauge, Bjørn Gitle & Johansen, Frode Ramstad (2023). The FREIIA Project: Facilitating Resilience Embracing Islands Innovation.
• Andersson, Gunnar (2023). Hvordan kan litteratur og erfaringer fra Japan kan hjelpe oss å forstå og utvikle egen Lean praksis.
• Tellnes, Lars Gunnar Furelid; Wu, Hong & Kjøniksen, Anna-Lena (2023). LCA for circular business model – five step method and experiences from Norway.
• Tellnes, Lars Gunnar Furelid; Andersson, Gunnar & Kjøniksen, Anna-Lena (2023). Three perspectives of LCA for business models innovation – case studies on rental of products.
• Andersson, Gunnar (2023). – Vi må huske å stille de dumme spørsmålene. [Avis]. Halden Arbeiderblad.
• Leister, Eivind Andre; Johansen, Frode Ramstad; Andersson, Gunnar & Hauge, Bjørn Gitle (2023). Fostering student entrepreneurship - studenter Europa rundt med prosjektene FREIIA og FETREC.
• Andersson, Gunnar (2023). Skal rense Oslofjorden med sjøpung. [TV]. NRK. Vis sammendrag

  Oppslag på NRK Viken som omtaler og viser arbeidet fra Sustainathon 2023 på ingeniørfag.

• Tellnes, Lars G. F.; Næss, Johann Kristian; Kjøniksen, Anna-Lena & Ross, Lone (2023). Carbon footprint of reused and recycled wood products.
• Andersson, Gunnar (2023). Forskning + Næringsliv + Studenter = Grønn omstilling.
• Mihet-Popa, Lucian (2023). An IoT communication platform for interactive buildings energy management system. Vis sammendrag

  More than 40% of the world’s energy is used in buildings, from which 50% of energy is wasted because of non-existing or inefficient building energy management system (BEMS). By using a BEMS energy consumers are more connected, better controlled, monitored and managed, and the smart building has emerged. This paper deals with development of an IoT communication platform for building energy management systems. This is done by using an edge/cloud-computing architecture based on communication modules and service providers. A lab setup with real-time interfaces and data processing, for monitoring and controlling the power generation and consumption in different buildings, will be designed to validate the platform.

• Pettersen, Inger Beate; Kubberød, Elin; Lynch, Matthew Patrick James; Bækkelund, Nora Geirsdotter; Mjånes, Jan Ove Rogde & Høvig, Øystein Stavø [Vis alle 7 forfattere av denne artikkelen] (2023). Coping with uncertainty and ambiguity in real-life practice and student team-centered learning courses: supporting pedagogies, the role of mentoring.
• Mihet-Popa, Lucian & Ahmed, Ibrahim (2023). Model Predictive Control of a Packed-U-cells Inverter with PV, Boost and Bidirectional Rectifier for Solid-State Transformers. Vis sammendrag

  Balancing the power flow in a three-phase system is one of the challenges in distribution networks, which is even more exacerbated with the widespread adoption of renewable energy sources (RES) and the development of smart grids. The transformer is one of the fundamental devices in power distribution that provides a means to link high-voltage, medium-voltage, and low-voltage networks in addition to galvanic isolation. Classical transformers utilize magnetic coupling with a turn ratio between coils to achieve this basic functionality, but they are bulky, expensive, and do not provide additional smart features. The use of a power electronics transformer (PET), also called a solid-state transformer (SST), has been introduced in the literature using a three-phase to single-phase converter to solve this problem. However, the focus was mainly on the inverter and a basic diode rectifier was used without RES integration. This paper bridged this gap by replacing it with a bidirectional converter and investigating its performance using solar power connected to the DC-link of the three-phase to single-phase solid-state transformer. The bidirectional SST was verified using simulations and the results show that the SST is able to maintain the balance between the three-phase system and the integrated renewable sources while providing bidirectional power flow with high efficiency and low Total Harmonic Distortion.

• Andersson, Gunnar & Johansen, Frode Ramstad (2023). Å samskape et læringsfellesskap på bærekraft .
• Birkeland, Marius & Røer, Henrik (2023). BIM Training with Autodesk Revit.
• Madi, Mervat; Ajeeb, Rayan; Aaker, Olav; Ntantis, Efstratios & Rahi, Mahmood (2023). Computational Investigation of the Impact of Using Amorphous core Material 2605HB1M in Electromagnetic Induction Motors.
• Torgersen, Geir (2023). Nyhetsbulletin og intervju ang. Interreg.prosjekt. [Radio]. NRK Østfold.
• Torgersen, Mirielle; Andersson, Gunnar & Lindgren, Peter (2022). Exploring the business ecosystem for green business models – a literature review. I Michelini, Laura; Mina, Anna & Alaimo Di Loro, Pierfrancesco (Red.), Proceedings of the 7th International Conference on New Business Models: Sustainable Business Model Challenges: Economic Recovery and Digital Transformation. LUMSA Universitet. ISSN 979-12-210-1188-3.
• Navrud, Ståle & Torgersen, Geir (2022). Let it be? Samfunnsøkonomiske analyser av klimatilpasningstiltak av. Klimarapport. Finans Norge.
• Tellnes, Lars Gunnar Furelid & Kjøniksen, Anna-Lena (2022). Perspectives of evaluating product service systems with life cycle assessment a case study on power tool rental.
• Torgersen, Geir (2022). Videre forskning på miljøeffekten av grønne vegger sikret med millionstøtte. [Internett]. hiof.no (nettside).
• Torgersen, Geir (2022). Hvordan kan grønne bygg stoppe flomvannet? [Internett]. Podcast - Forskningsprek.
• Kjøniksen, Anna-Lena & Tellnes, Lars Gunnar Furelid (2022). Action case studies as method for industrial work integrated learning.
• Andersson, Gunnar; Leister, Eivind Andre; Nielsen, Maya; Hauge, Bjørn Gitle & Johansen, Frode Ramstad (2022). Høyskolen får fem millioner til øyforskning. [Avis]. Fredriksstad Blad.
• Andersson, Gunnar; Johansen, Frode Ramstad; Hauge, Bjørn Gitle; Torgersen, Mirielle; Tellnes, Lars G. F. & Valter, Per (2022). Co-creating a learning community on sustainability.
• Torgersen, Geir (2022). Været blir våtere: Grønne hus kan suge opp flomvann. [Internett]. Forskning.no.
• Torgersen, Geir (2022). Været blir våtere: Grønne hus vil kunne «drikke» mye av flomvannet . [Internett]. hiof.no (nettside).
• Torgersen, Geir (2022). Fremtidens svampehus drikker vann, og kan redde byene fra flom. [Avis]. Dagsavisen, Demokraten.
• Hellstrøm-Finnsen, Magnus (2022). Hochschild Cohomology of Monads.
• Hellstrøm-Finnsen, Magnus (2022). Hochschild Cohomology of Monads .
• Torgersen, Geir & Rydningen, Ulf (2022). Categorising area models for stormwater fees at property level: A literature review.
• Hellstrøm-Finnsen, Magnus (2022). Hochschild cohomology of monads .
• Torgersen, Geir (2022). Bruk av samfunnsøkonomiske analyser for forebyggende flomtiltak i byer.
• Kishor, Nand; K. Srivastava, Anurag & Roy Pota, Hemanshu (2021). Guest Editorial: Special Section on “Deep Learning and Data Analytics to Support the Smart Grid Operation With Renewable Energy”. IEEE Transactions on Industrial Informatics. ISSN 1551-3203. 17, s. 6935 –6938. doi: 10.1109/TII.2021.3072770.
• Torgersen, Geir (2021). Geir Torgersen (51) forsker på flom i byer: – Dette må vi regne med mer av. [Avis]. Fredrikstad Blad.
• Torgersen, Geir (2021). Klimaendringer bidrar til mer ekstremvær og oftere oversvømmelser i urbane områder – Hva kan gjøres på et lokalt nivå? .
• Kjøniksen, Anna-Lena & Hauge, Bjørn Gitle (2021). Weather Data for the Mountain Skarvan, Trøndelag, Norway, 2020-2021.
• Mihet-Popa, Lucian & Saponara, Sergio (2021). Power Converters, Electric Drives and Energy Storage Systems for Electrified Transportation and Smart Grid Applications. Energies. ISSN 1996-1073. doi: 10.3390/en14144142.
• Pilehvar, Shima (2020). Using Astronauts' Urine to Built Lunar Construction. [Internett]. Live webinar with MAHSA University, Malaysia.
• Pilehvar, Shima & Kjøniksen, Anna-Lena (2020). Recent research into urea as a plasticizer for concrete on the Moon. Double Helix magazine.
• Kjøniksen, Anna-Lena (2020). Morran i Østfold - Forsker i Østfold skal lage betong på månen! [Radio]. NRK P1, Østfold.
• Kjøniksen, Anna-Lena (2020). Månedrømmen. [TV]. Lørdagsevyen, NRK.
• Kjøniksen, Anna-Lena (2020). Mellom himmel og jord. [Radio]. NRK Radio.
• Kjøniksen, Anna-Lena & Pilehvar, Shima (2020). Building a Moon Base. [Tidsskrift]. Double Helix.
• Kjøniksen, Anna-Lena & Pilehvar, Shima (2020). HIØ-professor fikk kinesisk pris for utvikling av månebetong med urin . [Avis]. Fredriksstad Blad.
• Johansen, Andreas L.; Hide, Sivert C.H.; Jacobsen, Jonas Bjertnes & Aaker, Olav (2022). Resirkulering av Jackon Thermomur®. Høgskolen i Østfold.

Se alle arbeider i Cristin