TY - CHAP AU - Kalpana, K AU - Ansari, M TI - Pitch Controller for Isolated Wind-Diesel System with Super Conducting Magnetic Energy Storage Unit Based on Fractional-Order Fuzzy PID Controller T2 - Recent Advances in Energy Technologies PY - 2023 SP - 217 EP - 231 PG - 15 UR - https://m2.mtmt.hu/api/publication/33572164 ID - 33572164 LA - English DB - MTMT ER - TY - JOUR AU - Adetokun, Bukola Babatunde AU - Oghorada, Oghenewvogaga AU - Abubakar, Sufyan Ja’afar TI - Superconducting magnetic energy storage systems: Prospects and challenges for renewable energy applications JF - JOURNAL OF ENERGY STORAGE J2 - J ENERGY STORAGE VL - 55 PY - 2022 IS - C SN - 2352-152X DO - 10.1016/j.est.2022.105663 UR - https://m2.mtmt.hu/api/publication/33575342 ID - 33575342 LA - English DB - MTMT ER - TY - JOUR AU - Kotb Baldam, Kotb Mohamed AU - Elmorshedy, Mahmoud F. AU - Salama, Hossam Salah Hussein AU - Dán, András TI - Enriching the stability of solar/wind DC microgrids using battery and superconducting magnetic energy storage based fuzzy logic control JF - JOURNAL OF ENERGY STORAGE J2 - J ENERGY STORAGE VL - 45 PY - 2022 PG - 24 SN - 2352-152X DO - 10.1016/j.est.2021.103751 UR - https://m2.mtmt.hu/api/publication/32550297 ID - 32550297 N1 - Electrical Power and Machines Engineering Department, Faculty of Engineering, Tanta University, Tanta, 31521, Egypt Department of Electrical Engineering, Faculty of Engineering, Aswan University, Aswan, 81542, Egypt Faculty of Electrical Engineering and Informatics, Budapest University of Technology and Economics, Budapest, 1111, Hungary Cited By :1 Export Date: 29 April 2022 Correspondence Address: Kotb, K.M.; Department of Electric Power Engineering, Hungary; email: kotb.mohamed@f-eng.tanta.edu.eg AB - Utilizing robustly-controlled energy storage technologies performs a substantial role in improving the stability of standalone microgrids in terms of voltages and powers. The majority of investigations focused less on integrating energy storage systems (especially superconducting magnetic energy storage 'SMES') within DC-bus microgrids. Besides, implementing fuzzy logic control (FLC) for both batteries and SMES within the DC-bus microgrids to enrich their stability and power quality under extreme climatic and loading variations has been seldomly addressed. Consequently, this paper introduces a comparative analysis of the performance of a hybrid renewable PV/wind DC-bus microgrid that separately implements fuzzy-controlled battery and SMES systems to enhance the microgrid stability and power quality. The proposed FLC approaches supervise energy interchange inside the system, mitigate the DC-bus voltage fluctuations, and smooth out the load power during the different instabilities. The system is examined under distinct normal and extreme climatic fluctuations such as wind gusts and rapid shadow and under sudden balanced and unbalanced loading events. The proposed FLC approaches are established based on quantifying the DC-bus voltage variation and measuring the actual battery and SMES currents which can be employed directly for the control action; hence, reducing both calculations/calibrations and complexity of the control system. Besides, they offer very quick charging/discharging actions for both battery and SMES systems to mitigate unexpected and rapid variations efficiently. For the load side, the study proposes a variable modulation index control based-sinusoidal pulse width modulation for controlling the prime inverter to preserve the load voltage and frequency constant during both balanced and unbalanced loading and extreme climatic disturbances. The obtained findings confirmed the efficacy of the proposed approaches in enriching the microgrid stability. Besides, they unveiled the magnificent performance of SMES over batteries regarding the response time, peak over- and undershoot, load voltage profile, and load power smoothness. LA - English DB - MTMT ER - TY - JOUR AU - Bakeer, Abualkasim AU - Salama, Hossam Salah Hussein AU - Vokony, István TI - Integration of PV system with SMES based on model predictive control for utility grid reliability improvement JF - PROTECTION AND CONTROL OF MODERN POWER SYSTEMS J2 - PROT CONTROL MODERN POWER SYST VL - 6 PY - 2021 IS - 1 SN - 2367-2617 DO - 10.1186/s41601-021-00191-1 UR - https://m2.mtmt.hu/api/publication/31993877 ID - 31993877 N1 - Cited By :4 Export Date: 15 December 2021 Correspondence Address: Salama, H.S.; Department of Electric Power Engineering, Hungary; email: hossam.salama@vet.bme.hu LA - English DB - MTMT ER - TY - JOUR AU - Elsayed, Islam AU - Nishi, Yoshiki TI - Emergy and Sustainability Ternary Diagrams of Energy Systems: Application to Solar Updraft Tower JF - SUSTAINABILITY J2 - SUSTAINABILITY-BASEL VL - 12 PY - 2020 IS - 24 SN - 2071-1050 UR - https://m2.mtmt.hu/api/publication/33286687 ID - 33286687 LA - English DB - MTMT ER - TY - JOUR AU - Fernandez-Guillamon, Ana AU - Martinez-Lucas, Guillermo AU - Molina-Garcia, Angel AU - Sarasua, Jose-Ignacio TI - Hybrid Wind-PV Frequency Control Strategy under Variable Weather Conditions in Isolated Power Systems JF - SUSTAINABILITY J2 - SUSTAINABILITY-BASEL VL - 12 PY - 2020 IS - 18 PG - 25 SN - 2071-1050 DO - 10.3390/su12187750 UR - https://m2.mtmt.hu/api/publication/31708746 ID - 31708746 AB - Over the last two decades, variable renewable energy technologies (i.e., variable-speed wind turbines (VSWTs) and photovoltaic (PV) power plants) have gradually replaced conventional generation units. However, these renewable generators are connected to the grid through power converters decoupled from the grid and do not provide any rotational inertia, subsequently decreasing the overall power system's inertia. Moreover, the variable and stochastic nature of wind speed and solar irradiation may lead to large frequency deviations, especially in isolated power systems. This paper proposes a hybrid wind-PV frequency control strategy for isolated power systems with high renewable energy source integration under variable weather conditions. A new PV controller monitoring the VSWTs' rotational speed deviation is presented in order to modify the PV-generated power accordingly and improve the rotational speed deviations of VSWTs. The power systems modeled include thermal, hydro-power, VSWT, and PV power plants, with generation mixes in line with future European scenarios. The hybrid wind-PV strategy is compared to three other frequency strategies already presented in the specific literature, and gets better results in terms of frequency deviation (reducing the mean squared error between 20% and 95%). Additionally, the rotational speed deviation of VSWTs is also reduced with the proposed approach, providing the same mean squared error as the case in which VSWTs do not participate in frequency control. However, this hybrid strategy requires up to a 30% reduction in the PV-generated energy. Extensive detailing of results and discussion can be also found in the paper. LA - English DB - MTMT ER - TY - CHAP AU - Mohamed, Sayed Mohamed Said AU - Aly, Mohamed M. AU - Abdel-Akher, Mamdouh AU - Hartmann, Bálint TI - Voltage Control of Large-Scale Distribution Systems during Wind Speed Transients Using SMES T2 - 2020 International Conference on Innovative Trends in Communication and Computer Engineering (ITCE) SN - 9781728148014 PY - 2020 SP - 391 EP - 396 PG - 6 DO - 10.1109/ITCE48509.2020.9047794 UR - https://m2.mtmt.hu/api/publication/31274610 ID - 31274610 N1 - Budapest University of Technology and Economics, Department of Electric Power Engineering, Budapest, 1111, Hungary Aswan University, Department of Electrical Engineering, Aswan, 81542, Egypt College of Engineering, Unizah Qassim University, Electrical Engineering Department, Saudi Arabia Export Date: 15 December 2021 AB - This paper discusses the application of superconducting magnetic energy storage (SMES) for voltage control of large-scale distribution systems during wind speed transients. The wind turbine adopted in this paper is the squirrel cage induction generator (SCIG) with a parallel connected capacitor bank for reactive power support and the adopted distribution system is the 90-bus radial distribution system. This type of wind turbine is the worst type from the point of view of voltage control and is selected to prove the effectiveness of the proposed control strategy of SMES active and reactive powers on the voltage profile of all buses of the distribution system. Moreover, one of the worst scenarios of wind transient is studied in this paper. Wind energy generation system (WEGS) and SMES are connected at the same bus for better improvement of voltage profile. SMES coil is immersed in a cooling liquid to keep it in the superconducting state, the voltage across the coil is stepped down by transformer and the flow of SMES power is controlled by fuzzy logic controller (FLC). FLC is designed so that SMES can charge/discharge real power depending on the wind speed. Moreover, value of reactive power delivered from the SMES to the distribution system is controlled according to the magnitude of bus voltage. FLC is designed with two inputs; deviation in wind speed and variations in SMES current. The obtained results validated the adopted control technique to improve the voltage profile of all buses of the studied system. LA - English DB - MTMT ER - TY - CHAP AU - Tarakan, Bartosz AU - Czapp, Stanislaw AU - Dobrzynski, Krzysztof AU - Zajczyk, Ryszard AU - Sarnicki, Marcin ED - IEEE, null TI - Voltage Control in a Power System with Renewable Sources of Energy T2 - 2019 International Conference on Information and Digital Technologies (IDT) PB - IEEE CY - Piscataway (NJ) SN - 9781728114019 PY - 2019 SP - 474 EP - 478 PG - 5 DO - 10.1109/DT.2019.8813661 UR - https://m2.mtmt.hu/api/publication/31030673 ID - 31030673 LA - English DB - MTMT ER -