Performance Analysis of Maximum Power Point Tracking for Two Techniques with Direct Control of Photovoltaic Grid -Connected Systems

ABSTRACT

The present study presents two techniques of Maximum Power Point Tracking (MPPT) via DC/DC converter to enhance the performance of the grid-connected Photovoltaic (PV) generation system to participate effectively within microgrids. The two techniques of MPPT are Perturb-Observe (P&O) and Incremental Conductance (IC). The variation of the solar radiation and temperature is considered during employing the two MPPT techniques. Besides, the performance of the system under the random variation of solar radiation was investigated. The authors used two types of controllers at the three-phase inverter, Proportional Integral (PI) and H-infinity Control (H∞C). The output voltage, current, and power at each type of inverter controller are compared along with the two techniques of MPPT. The effectiveness of the developed controllers together with MPPT techniques is demonstrated by comparing the obtained results with some previously reported research in the literature. In the case of MPPT via P&O and IC techniques along with the H∞C controller, the results show that the technique of IC is more robust, and the obtained output power is well matched with the references one as compared with the P&O technique which records a 7% error from MPP. Besides, the P&O technique has a high voltage and current ripple with a percentage of 20% at the starting time of the simulation.

KEYWORDS:

• Photovoltaic
• maximum Power Point Tracking
• proportional Integral
• voltage Source Control
• h-infinity Control
• incremental Conductance
• perturb and Observe

Acknowledgments

This study is supported by Taif University Researchers Supporting Project number (TURSP-2020/49), Taif University, Taif, Saudi Arabia. The authors would like to thank Taif University for its financial support.

Additional information

Funding

This work was supported by the Taif University [TURSP-2020/49].

Notes on contributors

Bahaa Saleh

Associate Prof. B. Saleh completed B. SC. (1991) and M. Sc. (1997) from Faculty of Engineering, Assiut University, Egypt; Ph.D. (2005) from University of Natural Resources and Applied Life Sciences, Vienna, Austria. Now he works as Associate Prof. in Mechanical Engineering Department, College of Engineering, Taif University, Taif, Saudi Arabia, from 2013 till now on leave from Mechanical Engineering Department, Faculty of Engineering, Assiut University, Assiut, Egypt. His field of interest includes thermal systems, renewable energy sources.

Ali M. Yousef

Prof. Dr. Ali M. Yousef received B. Sc. (1993), M. Sc. (1998) and Ph.D. (2003) from the Department of Electrical Power and Machines, Faculty of Engineering, Assiut University, Assiut, Egypt. He gets an Associate Professor 2008. Now he is a Professor of power system control since May 2014. Scientific area research is renewable energy, Power electronics, drives, Power system control, Fuzzy control, Robust Control.

Farag K. Abo-Elyousr

Dr. Farag K. Abo-Elyousr was born in 1978. He got his M. Sc and Ph. D. degrees from Assiut University on 2000 and 2015. His M. Sc. was related to electric machines and their related topics such as AC drives. His Ph. D. thesis was related to electric propulsion systems. He published many theoretical and experimental research articles. Currently, his research interests include power system optimization and control in the context of microgrids, power electronics, and stability issues.

Moayed Mohamed

Moayed Mohamed received the B.Sc. from the Faculty of Technology and Education, Sohag University, Sohag, Egypt, in 2014 and M. Sc. from Faculty of Technology and Education, Suez University, Suez, Egypt in 2017. Now he is a Ph. D. student at the Faculty of Technology and Education, Electrical Department, Sohag University, Egypt. His research interests are in the area of Renewable energy sources, Control theory, and applications and optimization techniques.

Saad A. Mohamed Abdelwahab

Dr. Saad A. Mohamed Abdelwahab received his B.Sc. (2006), M.Sc. (2011) and Ph.D. (2016) from Faculty of Technology and Education, Suez Canal University, Suez, Egypt. He is an assistant lecture in Electrical Department, Faculty of Technology and Education, Suez University, Suez, Egypt since 2011 until 2015. His research interests are in the area of renewable energy sources, power electronics, power system optimization, high voltage, and power quality.

Ahmed Elnozahy

Dr. Ahmed Elnozahy was born in 1979. Elnozahy got the degree of M. Sc. in Electrical Engineering from Assiut University in 2013 and Ph. D. degree in Energy Resources Engineering from Egypt-Japan University of Science and Technology in 2016. Currently, Elnozahy is an Assistant Professor in Electrical Engineering Department at Assiut University. His research interests are renewable energy, particularly, photovoltaic energy, wind energy, solar energy, fuel cell applications, and optimization of hybrid renewable energy systems.