Reconfiguration of Photovoltaic Arrays under Partial Shading Conditions Using LSG Method for Maximum Power Extraction

The foremost goal of this paper is to analyse output power, power Mismatch Loss (ML), Fill-Factor (FF), and efficiency metrics for different configurations. The aim of this research work is to investigate and quantify the performance of various configurations under different shading patterns. Partial shading is a significant impediment to photovoltaic (PV) array performance. This problem has the solution of reconfiguring the panels in the case of partial shadowing to give better outcomes. MATLAB/SIMULINK model was used to discuss, analyse, and compare various pv arrangements such as Series-Parallel (SP), Total-Cross-Tied (TCT), SuDoKu, and Logic-based Square Grid (LSG). The implementation and evaluation of all configurations are described using a simulation approach. The LSG method has the maximum power output of 9624 W, the highest efficiency of 11.6%, the Fill Factor of 0.61, and the lowest Mismatch Loss of 6056 W in Long-Wide (LW) shading pattern compare to all the configurations. Also, maximum power enhancement by LSG method is verified by experimentally using 7 × 7 PV array. The results shows that maximum power is enhanced by LSG method are 5.29, 8.44, 6.34, 4.26 and 8.24% when compared with TCT configuration under SN, SW, LN, LW and Diagonal shading patterns respectively.