Abstract
The increase of renewable energy generation and the integration with the grid brings some difficulties on the power network worldwide. The main problems on the energy providers are surplus or unregulated energy generation like in partially cloudy or fully sunny days. The main faults on the consumer side can be surplus or unregulated energy demand and in such cases, storage requirements exist for this energy to regulate the energy demand and thereby having a hybrid energy system. In this paper, the focus is on the active power control using a hybrid energy storage system (HESS) on the energy generation side by applying bidirectional power converters and maximum power point tracking (MPPT)control using a boost converter. Supercapacitor (SC) technology is proposed in such a hybrid storage system. A photovoltaic powered hybrid system storing the energy in a battery, and an SC is used to solve the big problems in the source and load side. The HESS is designed using bidirectional converters, and the working principles are given. Also, control algorithms for bidirectional converters are investigated with a detailed literature review to define the best solution for the proposed system. The HESS is designed in MATLAB/Simulink using bidirectional converters and simulated for resistive, battery, SC loads, and also combinations of these loads. Further, a newly proposed power-sharing method is investigated to increase the amount of energy stored with SC. Simulation results of the proposed system given and examined to verify the applicability of the idea.
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Mustafa Ergin Şahin
Mustafa Ergin Şahin received his B.Sc. degree in Electrical & Electronics Engineering from Karadeniz Technical University (KTU), M.Sc. degrees from Gazi University (GU) in Ankara and Ph.D. degrees in KTU, Trabzon, Turkey, in 2002 and 2006, 2014, respectively. He was a Guest Researcher with TUBITAK 2219 postdoctoral research program at the Department of Energy Technology, Aalborg University in 2019. He is currently an Associate Professor in Electrical and Electronics Engineering Department at RTE University. He was worked at different projects on power electronic systems. He is an active reviewer to the scientific journals in the field. He has been a member of the Chamber of Electrical Engineers in Turkey. He is the author of two books in circuit analysis and measurement, electronics laboratory. His research interests are power electronics, utilization of renewable energy system, electrical vehicles, energy storage methods and automatic control of such systems.
Frede Blaabjerg
Frede Blaabjerg was with ABB-Scandia, Randers, Denmark, from 1987 to 1988. From 1988 to 1992, he got the PhD degree in Electrical Engineering at Aalborg University in 1995. He became an Assistant Professor in 1992, an Associate Professor in 1996, and a Full Professor of power electronics and drives in 1998. From 2017 he became a Villum Investigator. He is honoris causa at University Politehnica Timisoara (UPT), Romania and Tallinn Technical University (TTU) in Estonia. He has published more than 800 journal papers in the fields of power electronics and its applications. He is the coauthor of four monographs and editor of ten books in power electronics and its applications. He is Vice-President of the Danish Academy of Technical Sciences too. His research interests include power electronics and its applications such as in wind turbines, PV systems, reliability, harmonics and adjustable speed drives.