Mitigation of Mismatch Power Losses of PV Array under Partial Shading Condition using novel Odd Even Configuration

Abstract

In this paper, the effect of Partial Shading Condition (PSC) on various solar photovoltaic (PV) array topologies has been studied extensively. PSC reduces the maximum power of a PV array and produces multiple Maximum Power Points (MPPs) in the PV characteristics. A novel PV array configuration, named as the Odd Even Configuration (OEC) has been proposed to mitigate the effects of PSC under a diagonally progressing shadowing scenario and performance parameters like mismatch power loss, Fill Factor (FF) and Performance Ratio (PR), have been measured. The performance of the proposed OEC has been compared with pre-existing standard configurations such as TCT, SP-TCT, BL-TCT and BL-HC. Another recently proposed configuration has also been used for comparison. The effect of variation in temperature on the shade dispersion effect has also been studied. All the considered PV array configurations have been modeled in MATLAB/Simulink environment. The proposed OEC configuration is found to be superior to other configurations for all the PSCs considered, with minimum power loss and improved FF.

Keywords

• Photovoltaic
• Partial Shading Condition
• Reconfiguration strategy
• Global Maximum Power Point
• Mismatch power loss