A P&O Based Variable Step Size MPPT Algorithm for Photovoltaic Applications

Year 2023, Volume: 36 Issue: 2, 608 - 622, 01.06.2023

Gökhan Yüksek , Ahmet Naci Mete

https://doi.org/10.35378/gujs.1050325

Cited By: 2

Abstract

Maximum power point tracking (MPPT) is an indispensable component of the Photovoltaic (PV) systems to maximize efficiency. Perturb and observe (P&O) is one of the prevalent MPPT methods owing to its easier structure for implementation but it suffers from problems of slow tracking and oscillations around the MPP. In this paper, a modified variable step size MPPT algorithm based on P&O method is proposed to obtain maximum power output from the PV system coupled with a boost DC-DC converter. The proposed method employs the scaled power difference as a control variable to enable variation of step size for each cycle. Results obtained by simulation and experimental work verified that the proposed algorithm is potent mitigating the problems related with classical P&O method.

Keywords

MPPT, Modified P&O, DC-DC converter, PV systems

Supporting Institution

Mersin Üniversity

Project Number

2017-1-TP2-2268

Thanks

Authors gratefully thank Prof. Engin Özdemir and Kocaeli University Energy Systems Engineering Department for the allocation of their facilities to conduct experimental part of this study.

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