A typical review on static reconfiguration strategies in photovoltaic array under non-uniform shading conditions

Abstract

Maximum power extraction from the photovoltaic (PV) system plays a critical role in increasing efficiency during partial shading conditions (PSCs). It directly reduces the output power of the PV array. There are different factors like, bypass diode configuration, array size, array configuration, shade intensity, environmental conditions etc. affecting on the performance of solar photovoltaic panel. Furthermore, series (S), parallel (P), series-parallel (SP), total-cross-tied (TCT), bridge-linked (BL), and honey-comb (HC), etc. are the various configurations to deal with mentioned issues. But these PV array configurations are also having drawbacks like low dispersion factor, mismatch losses, line losses under partial shading condition. To overcome these issues, the reconfiguration of the PV array is one of the effective measures. A comprehensive study of literature shows that PV modules are connected under different reconfigured schemes namely Sudoku, Optimal Sudoku, Magic square, zig-zag, Skyscraper, etc. In this paper, a comprehensive review is performed to highlight the advantages and limitations of each scheme. This study can be used as a sort of viewpoint to address the advancement in this area since some parameter comparison is made at the end of every technique, which might be a prominent base-rule for picking the most gainful sort of reconfiguration technique for further research.