TY - CHAP AU - Vokony, István AU - Táczi, István AU - Csatár, János AU - Dán, András AU - Hartmann, Bálint AU - Sőrés, Péter Márk ED - Bertrand, Raison TI - Application Experiences of Low Voltage Inline Voltage Regulator with Significant Photovoltaic Generation T2 - 2023 IEEE PES Innovative Smart Grid Technologies Europe (ISGT EUROPE) PB - IEEE CY - Piscataway (NJ) SN - 9798350396782 PY - 2023 PG - 6 DO - 10.1109/ISGTEUROPE56780.2023.10408377 UR - https://m2.mtmt.hu/api/publication/34562513 ID - 34562513 N1 - ENEDIS; et al.; GreenAlp; Le Reseau de Transport d'electricite (RTE); Schneider Electric; Think Smartgrids Conference code: 196974 Export Date: 22 March 2024 Funding text 1: ACKNOWLEDGMENT The research reported in this paper has been supported by E.ON Hungary. AB - Renewable energy generation is spreading apace worldwide, bringing integration challenges for distribution system operators. The focus of this study is to investigate the possible solutions to increase the hosting capacity of an actual low voltage (LV) feeder in Hungary. This pilot site already has significant photovoltaic (PV) generation, but more installations are expected in the near future. Simulations were carried out to compare the available technical options increasing the hosting capacity. Detailed on-site measurements were taken, which included the neutral line, to have a better understanding of the basic situation. It showed that the voltage is close to the limits with significant unbalance. Therefore, an unbalanced model was adopted with a new calculation method in order to incorporate the neutral line and the groundings. The simulations compared local PV inverter control, inline voltage regulator, tap-changing transformer and phase balancer and found the inline voltage regulator as the most effective and versatile solution for this case. A new device was developed and installed that implements an inline voltage regulator, optimized for local circumstances. Then, a longer series of measurements were taken which proved the effectiveness of the unit, showing that it can be a cost-effective grid development alternative to grid reinforcement. © 2023 IEEE. LA - English DB - MTMT ER - TY - JOUR AU - Salama, Hossam Salah Hussein AU - Kotb Baldam, Kotb Mohamed AU - Vokony, István AU - Dán, András TI - The Role of Hybrid Battery–SMES Energy Storage in Enriching the Permanence of PV–Wind DC Microgrids: A Case Study JF - ENG J2 - ENG VL - 3 PY - 2022 IS - 2 SP - 207 EP - 223 PG - 17 SN - 2673-4117 DO - 10.3390/eng3020016 UR - https://m2.mtmt.hu/api/publication/33284209 ID - 33284209 AB - The superior access to renewable sources in modern power systems increases the fluctuations in system voltage and power. Additionally, the central dilemmas in using renewable energy sources (RESs) are the intermittent nature of and dependence on wind speed and solar irradiance for wind and photovoltaic (PV) systems, respectively. Therefore, utilizing a vigorous and effective energy storage system (ESS) with RESs is crucial to overcoming such challenges and dilemmas. This paper describes the impacts of using a battery storage system (BSS) and superconducting magnetic energy storage (SMES) system on a DC bus microgrid-integrated hybrid solar–wind system. The proposed method employs a combination of BSS and SMES to improve the microgrid stability during different events, such as wind variation, shadow, wind turbine (WT) connection, and sudden PV outage events. Distinct control approaches are proposed to control the system’s different components in order to increase overall system stability and power exchange. Both the PV and wind systems are further equipped with unique maximum power point tracking (MPPT) controllers. Additionally, each of the ESSs is controlled using a proposed control method to supervise the interchange of the active power within the system and to keep the DC bus voltage constant during the different examined instabilities. Furthermore, to maintain the load voltage /frequency constant, the prime inverter is controlled using the proposed inverter control unit. The simulation results performed with Matlab/Simulink show that the hybrid BSS + SMES system successfully achieves the main targets, i.e., DC voltage, interchange power, and load voltage/frequency are improved and smoothed out. Moreover, a comparison among three case studies is presented, namely without using ESSs, using the BSS only, and once more using both BSS and SMES systems. The findings prove the efficacy of the proposed control method based on the hybrid BSS + SMES approach over BSS only in preserving the modern power system’s stability and reliability during the variable events. LA - English DB - MTMT ER - TY - JOUR AU - Salama, Hossam Salah Hussein AU - Kotb Baldam, Kotb Mohamed AU - Vokony, István AU - Dán, András TI - Comparative Analysis of a DC-microgrid Incorporating Hybrid Battery/Supercapacitor Storage System Addressing Pulse Load JF - RENEWABLE ENERGY & POWER QUALITY JOURNAL J2 - RENEWABLE ENERGY & POWER QUALITY J VL - 20 PY - 2022 SP - 359 EP - 363 PG - 5 SN - 2172-038X DO - 10.24084/repqj20.310 UR - https://m2.mtmt.hu/api/publication/33091411 ID - 33091411 N1 - Department of Electric Power Engineering, Budapest University of Technology and Economics, Budapest, Hungary Department of Electrical Engineering, Aswan University, Aswan, Egypt Department of Electrical Power and Machines Engineering, Tanta University, Tanta, Egypt Export Date: 13 September 2022 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 - Kotb Baldam, Kotb Mohamed AU - Elmorshedy, Mahmoud F. AU - Dán, András TI - Performance Assessment of Integrating SMES and Battery Storage Systems with Renewable DC-bus Microgrids: A Comparison JF - PERIODICA POLYTECHNICA-ELECTRICAL ENGINEERING AND COMPUTER SCIENCE J2 - PERIOD POLYTECH ELECTR ENG COMP SCI VL - 65 PY - 2021 IS - 4 SP - 382 EP - 393 PG - 12 SN - 2064-5260 DO - 10.3311/PPee.17676 UR - https://m2.mtmt.hu/api/publication/32490454 ID - 32490454 AB - The presence of renewable energy sources in hybrid renewable energy systems is considered a significant challenge since the generation mainly depends on meteorological conditions. Hence, employing a robust and flexible energy storage system is, therefore, a crucial solution in such circumstances. This paper investigates the performance evaluation of both batteries and superconducting magnetic energy storage (SMES) systems integrated with hybrid solar-wind DC-bus microgrid. The study focuses on enhancing the system stability using both storage technologies during normal and extreme renewables instabilities like wind gusts and shadows, and sudden load variations. Moreover, the load voltage/frequency were preserved constant during the distinct instabilities using the inverter control system. Productive findings showed the superior performance of utilizing the SMES over the batteries and its potential to enhance the system power-quality. LA - English DB - MTMT ER - TY - JOUR AU - Kotb Baldam, Kotb Mohamed AU - Elkadeem, M.R. AU - Khalil, Ahmed AU - Imam, Sherif M. AU - Hamada, Mohamed A. AU - Sharshir, Swellam W. AU - Dán, András TI - A fuzzy decision-making model for optimal design of solar, wind, diesel-based RO desalination integrating flow-battery and pumped-hydro storage: Case study in Baltim, Egypt JF - ENERGY CONVERSION AND MANAGEMENT J2 - ENERG CONVERS MANAGE VL - 235 PY - 2021 SN - 0196-8904 DO - 10.1016/j.enconman.2021.113962 UR - https://m2.mtmt.hu/api/publication/31923429 ID - 31923429 LA - English DB - MTMT ER - TY - JOUR AU - Elkadeem, M.R. AU - Kotb Baldam, Kotb Mohamed AU - Elmaadawy, Khaled AU - Ullah, Zia AU - Elmolla, Emad AU - Liu, Bingchuan AU - Wang, Shaorong AU - Dán, András AU - Sharshir, Swellam W. TI - Feasibility analysis and optimization of an energy-water-heat nexus supplied by an autonomous hybrid renewable power generation system: An empirical study on airport facilities JF - DESALINATION J2 - DESALINATION VL - 504 PY - 2021 SN - 0011-9164 DO - 10.1016/j.desal.2021.114952 UR - https://m2.mtmt.hu/api/publication/31923415 ID - 31923415 N1 - School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China Department of Electric Power Engineering, Faculty of Electrical Engineering and Informatics, Budapest University of Technology and Economics, Budapest, 1111, Hungary Electrical Power and Machines Engineering Department, Faculty of Engineering, Tanta University, Tanta, 31521, Egypt School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China Civil Engineering Department, Faculty of Engineering, Al-Azhar University, Cairo, 11651, Egypt Mechanical Engineering Department, Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt Cited By :15 Export Date: 4 April 2022 CODEN: DSLNA Correspondence Address: Kotb, K.M.; Department of Electric Power Engineering, Hungary; email: kotb.mohamed@f-eng.tanta.edu.eg LA - English DB - MTMT ER - TY - JOUR AU - Elkadeem, M.R. AU - Kotb Baldam, Kotb Mohamed AU - Ullah, Zia AU - Atiya, Eman G. AU - Dán, András AU - Wang, Shaorong TI - A two-stage multi-attribute analysis method for city-integrated hybrid mini-grid design JF - SUSTAINABLE CITIES AND SOCIETY J2 - SUSTAIN CITIES SOC VL - 65 PY - 2021 SN - 2210-6707 DO - 10.1016/j.scs.2020.102603 UR - https://m2.mtmt.hu/api/publication/31923385 ID - 31923385 LA - English DB - MTMT ER - TY - JOUR AU - Kotb Baldam, Kotb Mohamed AU - Elkadeem, M.R. AU - Elmorshedy, Mahmoud F. AU - Dán, András TI - Coordinated power management and optimized techno-enviro-economic design of an autonomous hybrid renewable microgrid: A case study in Egypt JF - ENERGY CONVERSION AND MANAGEMENT J2 - ENERG CONVERS MANAGE VL - 221 PY - 2020 SN - 0196-8904 DO - 10.1016/j.enconman.2020.113185 UR - https://m2.mtmt.hu/api/publication/31388507 ID - 31388507 LA - English DB - MTMT ER - TY - CHAP AU - Kotb Baldam, Kotb Mohamed AU - Mahmoud, F. Elmorshedy AU - Dán, András ED - Szakál, Anikó ED - Maros, Dóra TI - Permanence Improvement of a Local Energy Production System Including Unbalanced Loading T2 - 2019 International IEEE Conference and Workshop in Óbuda on Electrical and Power Engineering (CANDO-EPE) PB - IEEE CY - Budapest CY - Piscataway (NJ) SN - 9781728143590 PY - 2019 SP - 185 EP - 190 PG - 6 DO - 10.1109/CANDO-EPE47959.2019.9110974 UR - https://m2.mtmt.hu/api/publication/31291106 ID - 31291106 LA - English DB - MTMT ER -