A Novel Reduced Cross Link Based PV Array Interconnection Schemes for Enhancing Maximum Power Under Dynamically Varying Irradiance Conditions

Partial shadowing is the main cause of the PV array's reduced power production. There is a voltage and current mismatch in PV modules when partial shadowing conditions (PSCs) are present. The PV array's power voltage (P–V) characteristics also show many peaks when operating under PSCs. The PV array arrangement is the best way to reduce the impact of PSCs. This paper introduces the Double tied cross link (DTCL) array configuration, which addresses the drawbacks of the TCT array configuration. The proposed DTCL, along with conventional configurations (SP, BL, HC, and TCT), are simulated for a 6 × 6 array under Horizontal, Vertical, Diagonal, Random, Frame, Bottom left corner (BLC), Bottom right corner (BRC), and Half shading. A comparison analysis is conducted to evaluate the configurations in terms of Global Maximum PowerPoint, Mismatching power loss, Fill factor, Efficiency, Relative power loss, Wiring loss, Number of peak points, and Local maximum peak points. The DTCL configuration of 6 × 6 PV arrays results in a minimum wire loss reduction of 32%. In frame shading, DTCL is performing very close to TCT, with a difference of ML by 1.34%, FF by 1.01%, η by 0.58%, and RPL by 3.78%. In the remaining PSCs, DTCL outperformed TCT with a ML difference of less than 16.73%, FF by 8.45%, and η by 4.94%. The DTCL design leads to better performance with a reduced number of tie connections than traditional tie-connected configurations.