Analysis of Current Harmonics Compensation and the Effect of Frequency Variation for Single-Phase Stand-Alone PV Inverters using PR Controller

ABSTRACT

This paper presents the analysis of current harmonics compensation using the proportional-resonant controller for single-phase stand-alone photovoltaic inverter applications. The effect of frequency variation in the reference signal to the controller performance was also analyzed. The controller parameters (K_p , K_i , and ω_c ) and the inductor-capacitor (LC)-filter parameters are optimally selected to obtain a very low current total harmonic distortion . The control algorithm was implemented using a low-cost digital signal processor (DSP) TMS320F28335 eZdsp development board. Both simulation and experimental results validate the performance and the effectiveness of the control technique used.

KEYWORDS:

• Current control
• DC-AC power inverters
• DC-DC power converters
• Low-pass filters
• Solar energy
• Solar power generation

ACKNOWLEDGEMENTS

We would like to thank the University of Malaya and the Ministry of Higher Education, Malaysia for providing support in this work under High Impact Research Grant H-16001-00-0000032, Postgraduate Research Grant PG162-2015B, and Fundamental Research Grant Scheme FP065-2015A.

DISCLOSURE STATEMENT

No potential conflict of interest was reported by the authors.

Additional information

Notes on contributors

M. Parvez

M. Parvez received the BSc Engg. degree in Electrical and Electronic Engineering from Dhaka University of Engineering and Technology (DUET), Gazipur, Bangladesh, in 2010, the MPhil degree in Power Electronics and Control from the University of Malaya, Malaysia in 2017. Currently, he is working as a research assistant at the UM Power Energy Dedicated Advanced Center (UMPEDAC), University of Malaya, Malaysia. His research interests include grid-connected PV inverters, power electronics, and renewable energy.

M. F. M. Elias

M. F. M. Elias received the BEng (Hons.), MEng and PhD degrees in Electrical Engineering from the University of Malaya, Kuala Lumpur, Malaysia, in 2003, 2007, and 2013, respectively. Currently, he is a senior lecturer at the UM Power Energy Dedicated Advanced Centre, University of Malaya, Malaysia. His research interests include power electronic converters and electrical drives.

E-mail: [email protected]

N. A. Rahim

N. A. Rahim received the BSc (Hons.) and MSc degrees from the University of Strathclyde, Glasgow, UK, and the PhD degree from the Heriot–Watt University, Edinburgh, UK, in 1995. He is currently a professor at the UM Power Energy Dedicated Advanced Center (UMPEDAC), University of Malaya, Kuala Lumpur, Malaysia, where he is also the director of the centre. He has been appointed as an adjunct professor at King Abdulaziz University, Jeddah, Saudi Arabia, till date. His research interests include power electronics, real-time control systems, and electrical drives. He is a fellow of the IET, UK, and the Academy of Sciences Malaysia.

E-mail: [email protected]