Optimized Controller Gains Using Grey Wolf Algorithm for Grid Tied Solar Power Generation with Improved Dynamics and Power Quality

doi:10.23919/CJEE.2022.000016

中国电气工程学报（英文） ›› 2022, Vol. 8 ›› Issue (2): 75-85.doi: 10.23919/CJEE.2022.000016

收稿日期:2021-06-07 修回日期:2021-09-20 接受日期:2021-12-29 出版日期:2022-06-25 发布日期:2022-07-08

Optimized Controller Gains Using Grey Wolf Algorithm for Grid Tied Solar Power Generation with Improved Dynamics and Power Quality

Veramalla Rajagopal^1,*, Danthurthi Sharath¹, Gundeboina Vishwas¹, Jampana Bangarraju², Sabha Raj Arya³, Challa Venkatesh¹

1. Department of Electrical and Electronics Engineering, Kakatiya Institute of Technology and Science Warangal, Telangana 506015, India;
2. Department of Electrical and Electronics Engineering, B V Raju Institute of Technology, Telangana 502313, India;
3. Department of Electrical Engineering, Sardar Vallabhbhai National Institute of Technology Surat, Gujarat 395007, India

Received:2021-06-07 Revised:2021-09-20 Accepted:2021-12-29 Online:2022-06-25 Published:2022-07-08
Contact: * E-mail: vrg.eee@kitsw.ac.in
About author:Veramalla Rajagopal received his AMIE (Electrical) degree from the Institution of Engineers (India), his M.Tech. degree from the Uttar Pradesh Technical University, India, and his Ph.D. degree from the Indian Institute of Technology (IIT), Delhi. He is currently working as a Professor of Electrical and Electronics Engineering at Kakatiya Institute of Technology and Science, Warangal, Telangana, India. His areas of interest include power electronics and drives, renewable energy generation and applications, flexible AC transmission system, and power quality. He holds one Indian patent, has authored 31 international and national journals articles, and has presented at 35 IEEE and national conferences in India and abroad. He is a Life Member of the Indian Society for Technical Education (ISTE) and a Fellow of Institution of Engineers (India).
Danthurthi Sharath received his diploma (Electrical and Electronics) from JN Government Polytechnic, Hyderabad, his B.Tech. degree from JNTU, Manthani, and his M.Tech. from Kakatiya Institute of Technology and Sciences, Warangal. He is currently working as an Assistant Professor of Electrical and Electronics Engineering at Warangal institute of Technology and Sciences, Warangal, Telangana. His areas of interest include power electronics and flexible AC transmission, and power quality and hybrid electric system.
Gundeboina Vishwas received his B.Tech. degree in Electrical and Electronics Engineering from JNTU College of Engineering, Jagtial, India in 2017, and his M.Tech. degree in Power Electronics from Kakatiya Institute of Technology and Sciences, India in 2020. He is currently pursuing his Ph.D. degree in the Department of Electrical Engineering, Sardar Vallabhbhai National Institute of Technology, Surat, India. His research interests include power electronics and drives, multilevel inverters, induction machines, battery management systems, and power quality.
Jampana Bangarraju received the B.Tech. degree in Electrical and Electronics Engineering from A.S.R College of Engineering, Tanuku in 2004, and M.Tech. degree from JNTU, Hyderabad in 2007. He is currently working as Associate Professor in B. V. Raju Institute of Technology, Narsapur, Telangana, India. His areas of interest include power electronics and drives, power quality, FACTS, and artificial neural networks. He is currently pursuing a Ph.D. degree at the Department of Electrical Engineering, JNTU, Hyderabad, India. He is a Life Member of the Indian Society for Technical Education (ISTE) and Member of the Institute of Electrical and Electronics Engineers.
Sabha Raj Arya (S'09-M'19) received his B.E. degree in Electrical Engineering from Government Engineering College, Jabalpur in 2002, M.T. degree in Power Electronics from Motilal National Institute of Technology, Allahabad in 2004, and Ph.D. degree in Electrical Engineering from the Indian Institute of Technology (IIT) Delhi, New Delhi, India in 2014. He joined as an Assistant Professor in the Department of Electrical Engineering, Sardar Vallabhbhai National Institute of Technology, Surat. In January 2019, he was promoted to Associate Professor in the same institution. His fields of interest include power electronics, power quality, design of power filters and distributed power generation. He has received two national awards for his research work: INAE Young Engineer Award from the Indian National Academy of Engineering and the POSOCO Power System Award from the Power Grid Corporation of India in 2014. He has also received the Amit Garg Memorial Research Award in 2014 from IIT Delhi for high impact journal publications during the 2013–2014 session. He has published more than 100 research papers in international journals and conferences in the field of electrical power quality.He also serves as an Associate Editor for the IET (UK) Renewable Power Generation.
Challa Venkatesh received his B.Tech. (Electrical Engineering) and M.Tech. (Power Electronics) degrees from University Visvesvaraya College of Engineering, Bangalore, India, and his Ph.D. degree from National Institute of Technology & Science, Warangal, India. He is currently working as a Professor of Electrical and Electronics Engineering, Kakatiya Institute of Technology and Science, Warangal, Telangana, India. His areas of interest include power quality analysis, power electronics and drives, and renewable energy generation and applications. He has authored 14 international and national journal articles and has presented at 20 IEEE and national conferences in India and abroad. He is a Life Member of the Indian Society for Technical Education (ISTE).

摘要/Abstract

Abstract: This study proposes a control algorithm based on synchronous reference frame theory with unit templates instead of a phase locked loop for grid-connected photovoltaic (PV) solar system, comprising solar PV panels, DC-DC converter, controller for maximum power point tracking, resistance capacitance ripple filter, insulated-gate bipolar transistor based controller, interfacing inductor, linear and nonlinear loads. The dynamic performance of the grid connected solar system depends on the effect operation of the control algorithm, comprising two proportional-integral controllers. These controllers estimate the reference solar-grid currents, which in turn generate pulses for the three-leg voltage source converter. The grey wolf optimization algorithm is used to optimize the controller gains of the proportional-integral controllers, resulting in excellent performance compared to that of existing optimization algorithms. The compensation for neutral current is provided by a star-delta transformer (non-isolated), and the proposed solar PV grid system provides zero voltage regulation and eliminates harmonics, in addition to load balancing. Maximum power extraction from the solar panel is achieved using the incremental conductance algorithm for the DC-DC converter supplying solar power to the DC bus capacitor, which in turn supplies this power to the grid with improved dynamics and quality. The solar system along with the control algorithm and controller is modeled using Simulink in Matlab 2019.

Key words: Control algorithm, solar power generation, DC-DC converter, star-delta transformer, maximum power point tracking, power quality, grey wolf optimization algorithm

. [J]. 中国电气工程学报（英文）, 2022, 8(2): 75-85.

Veramalla Rajagopal, Danthurthi Sharath, Gundeboina Vishwas, Jampana Bangarraju, Sabha Raj Arya, Challa Venkatesh. Optimized Controller Gains Using Grey Wolf Algorithm for Grid Tied Solar Power Generation with Improved Dynamics and Power Quality[J]. Chinese Journal of Electrical Engineering, 2022, 8(2): 75-85.

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Optimized Controller Gains Using Grey Wolf Algorithm for Grid Tied Solar Power Generation with Improved Dynamics and Power Quality

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