Shaded Dispersed Topology: An Improved PV Array Configuration for Power Enhancement under Irradiance Variations

Abstract

This article introduces a novel shaded dispersed topology (SDT) by using a square matrix of array size 9 using different PV modules. The concentrated partial shading in the proposed SDT arrangement is converted into dispersed shading through a total cross-tied (TCT) topology by using static reconfiguration where it does not alter the electrical connections and only the position of modules being changed for reducing the line losses. The primary objective is to alleviate partial shading losses and subsequently boost power generation and other performance parameters. Extensive simulations confirm the enhanced performance during partial shading conditions with different irradiance conditions compared to the conventional total cross-tied set up. Simulation results make a confirmatory note that the proposed novel arrangement has very few local multiple peaks, high fill factor(FF), high row current, a significant increase in array power, less mismatch power losses(MP loss) and last but not the least- the efficiency of the proposed system surpasses the traditional total cross-tied topology. The investigation assesses how well the system performs in the presence of four unique shading patterns. The proposed shaded dispersed topology demonstrates superior adaptability compared to conventional PV configurations. This unique design ensures reliability and consistency of power output under partial shading conditions.