Boost in energy generation using robust reconfiguration: A novel scheme for photovoltaic array under realistic fractional partial shadings

Abstract

This research focuses on the effects of realistic fractional partial shading (PS) patterns adversely influencing the performance of the photovoltaic array (PVA). These naturally occurring fractional scenarios of PSs are handled optimally with precision by the novel extra region SuDoKu (SDK) (EXRSDK) topology. The proposed topology surpasses the research presented in the literatures owing to the fact that they offer solution only to simple and non-fractional shading patterns of PVA, which rarely occurs in factual situations. This reconfigured topology is proficient in achieving efficacious results in the most realistic fractional shading scenarios. This is accomplished through an optimized approach incorporated with a systematic and coherent mathematical logic applied to the conventional PVA. EXRSDK is modeled, simulated, and validated based on the parameters like efficiency (Ef), fill-factor (FF), global maximum power point (GMPP), and mismatch power loss (MPL). The MATLAB/SIMULINK results are compared with those of total cross tied, SDK and skycraper SDK through in-depth analysis. The GMPP under squared lamina central region (SLCR) scenario is the highest (equals to 5733.0 W). The % FF and, %Ef are also maximum (equal to 52.118% and 13.695%, respectively) under the same scenario. Further, this topology has the ability to reduce the MPL, which is equal to 721.0 W in SLCR scenario. The estimated annual income from a [9×9] EXRSDK PVA is ₹ 2,12,370.87. This indicates that, for huge power plants, the proposed PVA topology would result in rewarding earnings. Finally, the experimental test investigations conducted on a [6×6] EXRSDK PVA confirms the authenticity of the proposed reconfiguration topology.