A Review: Performance Analysis of PV Array Working Under Partial Shaded Conditions

In this review paper, one of the main problems pertaining to the successful and efficient performance of PV (photovoltaic) systems has been identified as the shading phenomenon on a global scale. The generation of PV systems can be reduced by shading from nearby construction, passing mists, the droppings of birds or other winged creatures, etc. By carefully choosing PV array configuration and reconfiguration strategies, the generation of PV under partial shadowing can be improved. An in-depth analysis of several Photovoltaic array layouts and reconfigurations that operate in presence of partial shade conditions is provided in this article. For various shading studies, the effectiveness of the PV array configurations such as SP (Series-Parallel), TCT (Total Cross Tied), HC (Honeycomb), BL (Bridge-linked), and OE (Odd-Even) are assessed and studied to maximize output power, minimize losses due to shading, improving fill factor, and taking care of mismatch losses. For the same shade conditions, the outcomes are contrasted with a 7x7 PV array design. The experiment is broadened to determine the effects on power output of including a bypass diode in each module. The results of the experiments also show that shading event dictates PV array's maximum instantaneous power production. The findings show that, for all taken-in shading experiments, OE reconfiguration improves performance in terms of maximum power generation.