Power Enhancement under Partial Shading Condition Using a Two-Step Optimal PV Array Reconfiguration

Under partial shading conditions, photovoltaic (PV) arrays are subjected to different irradiance levels caused by nonuniform shading. As a result, mismatch between the modules, reduction in power generated, and hotspot phenomenon will be observed. One method reduce losses is reconfigure total-cross-tied (TCT) array dynamic static forms, where improved performance can achieved through more efficient distribution thanks increased dimensions. However, increase dimensions leads complexity of wiring installation reconfiguration large number switches sensors required reconfiguration. To rectify these problems, two-step proposed this paper. In first step, modules inside PV divided into subarrays with reconfiguration, rather than being wired as large-scale arrays. second an algorithm developed for The introduced searches all possible connections finally identifies most optimal solution. advantage, employs only short-circuit current values subarray rows, which reduces comparison 8 patterns, simulations conducted results confirm that outperforms TCT statically modified terms losses. Among these, highest improvement obtained regard under fourth eighth respectively.