Partial Shading Mitigation Approaches for PV Generation Systems: A Review

Partial shading is a common challenge in photovoltaic (PV) systems, leading to decreased energy output and efficiency. To circumvent the adverse effects of partial shading conditions and achieve the effective global maximum power point tracking (GMPPT), an effective approach is to evenly distribute the shadow across the PV panels. In this paper, these approaches are classified into four essential categories. The first among them is exploitation of the characteristic curve, the second group is intelligent algorithms, the third category is optimization techniques and the fourth one includes PV array reconfigurations. This article serves as a readily available resource for conducting extensive research in the field of PV systems, especially focusing on partial shading conditions, in the upcoming times.