Fast Maximum Power Point Tracking for PV Arrays under Partial shaded Conditions

TL;DR

This paper introduces a fast and efficient MPPT method for photovoltaic arrays under partial shading, capable of accurately tracking the global maximum power point despite multiple local peaks.

Contribution

A novel MPPT algorithm that reduces sampling and increases speed for GMPP tracking under partial shading conditions, outperforming existing methods.

Findings

Proposed method accurately tracks GMPP in simulations.

Method outperforms two existing algorithms in speed and accuracy.

Effective under various partial shading scenarios.

Abstract

P-V characteristic of photovoltaic (PV) arrays under partially shaded conditions (PSC) has multiple peaks, and conventional maximum power point tracking (MPPT) algorithms may fail to track the global maximum power point (GMPP) because of their insufficient intelligence in discriminating the local and global peaks. This paper proposes a novel fast MPPT method to achieve GMPP of PV array under all PSCs. The proposed method reduces the number of required samples and increases the speed of GMPP tracking based on comprehensive study of I-V and P-V characteristics of PV array. Performance of the proposed method has been evaluated in simulations of different PSCs. Also, its performance has been compared with two selected methods in the literature through simulations. Comparisons highlight the superiority of the proposed method.