Repositioning of Series-Parallel, Total-Cross-Tide, Bridge-Link, and Honey-Comb PV Array Configurations for Maximum Power Extraction

Abstract

Partial shading conditions considerably reduces the power generation for conventional PV array connection. This problem can be diminished effectively by repositioning the PV panels. In this paper, physical repositioning has been applied to series-parallel (SP), total-cross-tide (TCT), bridge link (BL), and honey-comb (HC) configurations without changing electrical connections. To relocate the panel we have adopted two repositioning strategies which are reconfiguration within an array (RWA) and reconfiguration within a column (RWC). This paper investigates the effect of repositioning of a panel on power extraction, efficiency, fill factor (FF), per cent mismatch losses (%ML), shading power losses (PL), and shade dispersion. This paper also provides information about, which conventional configuration gives maximum power extraction; either without reconfiguration or with reconfiguration. Also, the comparison in two base repositioning approaches shows the path for the next advancements in reconfiguration techniques. The performance analysis has done in MATLAB Simulink on a 4×4 PV array under horizontal, vertical, diagonal, L-shape, Left Top Corner (LTC), Right Top Corner (RTC), Right Bottom Corner (RBC), Left Bottom Corner (LBC), and Center shading patterns.