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Abstract
This paper analyzes the variable step size selection methods applied to the incremental conductance based maximum power point tracking technique (MPPT) for the solar photovoltaic system. The delta P/delta V (DpDv) variable step size method and the novel variable step size method, namely the gamma scaling method, are developed in Matlab/Simulink. Extensive results are obtained using these step size methods and compared. The proposed gamma scaling method is found to have higher efficiency with lower peak-peak ripple in load current as compared to DpDv, when sudden irradiance of 1000 W/m2 is applied to the PV panel. There are numerous other performance advantages of the gamma scaling method compared to the DpDv method under various irradiation conditions. The hardware prototype of the inverse sepic converter is used which is supplemented by the gamma scaling and DpDv methods. The simulated and experimental results of gamma scaling and DpDv methods are compared. In terms of performance, the proposed gamma scaling method has been found to be better than the DpDv method.
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Notes on contributors
Ankur Kumar Gupta
Ankur K Gupta is Research Scholar from IIT (ISM) Dhanbad. He is having more than 4 years of experience as an R&D Engineer in the field of power electronics (AC-DC and DC-DC CONVERTER). His research area includes power electronics and converters, and renewable energy-based electrical power generation.
Yogesh K. Chauhan
Yogesh K Chauhan has obtained MTech (Power electronics and drives) (from IITD, New Delhi) and PhD on induction generator from Thapar University, Patiala, Punjab in 1998 and 2010, respectively. He had worked in Thapar University and GB University, Gr. Noida, as Assistant Professor. Presently, he is working as Associate Professor, KNIT Sultanpur, Uttar Pradesh. He is having more than 18 year of teaching/research experience. His research interests include power electronics converters and drives, induction generators, and renewable energy-based electrical power generation. He is a profession member of IEEE and IET (I). Email: [email protected]
Tanmoy Maity
Tanmoy Maity received graduation and master's degree in electrical engineering from Calcutta University and PhD from Bengal Engineering & Science University, Shibpur. He has 6 years industrial and more than 18 years academic experience. He is currently working as Associate Professor in Indian Institute of Technology (ISM), Dhanbad, Jharkhand, India. Email: [email protected]