https://orcid.org/0000-0003-2692-1679
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Abstract
This paper presents a fifth-order generalized integrator (FOGI) as an orthogonal signal generator (OSG) to obtain a grid synchronization signal for a double-stage single-phase grid-interfaced photovoltaic supply system (GIPVSS). The proposed GIPVSS consists of a single-ended primary inductor converter (SEPIC) and a H-bridge voltage source converter (HBVSC) to transfer solar power to the grid system. The SEPIC controls maximum power delivery (MPD) from the Photovoltaic (PV) array and feeds that power to the grid via an HBVSC. In this study, all energy storage elements (inductors and capacitors) of SEPIC are considered with their effective series resistance (ESR). The dynamic modeling of SEPIC is obtained using a small signal analysis. The control of VSC allows harmonics’ mitigation and power factor improvements. A FOGI and a second-order adaptive filtering approach are used in controling VSC. The FOGI is used to obtain a grid synchronization signal from sensed grid voltage under disturbances. The second-order adaptive filtering approach is used to obtain an active load current component. The comparative analysis of FOGI with other reported algorithms is carried out under harmonics in sensed grid voltage. The effectiveness of the proposed system and its control is validated in a laboratory prototype using a Launch Pad TMS320F28379D digital signal processor (DSP).
Additional information
Notes on contributors
Shailendra Kumar Sharma
Shailendra Kumar Sharma received a bachelor’s degree in electrical engineering from the Institution of Engineers (India), Calcutta, in 1998, a master’s degree in electrical engineering with a specialization in power electronics from the Shri Govindram Seksaria Institute of Technology and Science, Indore, India, in 2003, and a PhD degree from the Indian Institute of Technology Delhi, New Delhi, India, in 2012. He joined as an assistant professor in the Electrical Engineering Department, Shri Govindram Seksaria Institute of Technology and Science, in March 2004 and became associate professor in March 2017. He was a post-doctoral research fellow with the Department of Electrical Engineering, Ecole de Technologie Sup´erieure, Universíe du Qúebec, Montŕeal, Canada, during January to December 2015. He has two Indian patents in solar and wind energy conversion systems. He has authored or co-authored 33 papers in journals of international repute, including IEEE and IET. His main research interests include control of stand-alone nonconventional energy sources, grid control under penetrations of distributed energy resources, power quality improvements, and control of special machine drives. Email: [email protected]
Pemendra Kumar Pardhi
Pemendra Kumar Pardhi received a BE degree in electrical and electronics engineering from Mansarover Institute of Science and Technology Bhopal, India, in 2014, ME degree in electrical engineering with a specialization in power electronics from the Shri Govindram Seksaria Institute of Technology and Science, Indore, India, in 2017, where he is currently pursuing his PhD degree in the Department of Electrical Engineering. Corresponding author. Email: [email protected]
Rakesh Saxena
Rakesh Saxena received a BE degree in electrical engineering from Madhav Institute of Technology and Science, Gwalior, India, in 1984, an ME degree in power electronics from the Shri Govindram Seksaria Institute of Technology and Science, Indore, India, in 1987, and a PhD degree and the MBA degree in finance from Davi Ahilya Vishwavidyalaya, Indore, India, in 2002 and 2006, respectively. He joined the Department of Electrical Engineering, Shri Govindram Seksaria Institute of Technology and Science, as an Assistant Professor in 1986. He became an Associate professor in 1996 and a professor in 2006. Currently, he is the director of the Shri Govindram Seksaria Institute of Technology and Science. He has authored or co-authored 20 research papers in journals of international repute. Email: [email protected]