Reduction of Mismatch Power Loss in a Partially Shaded Photovoltaic System Using the OTR

Abstract

This paper introduces a comparative study of one time relocation algorithm (OTR) with other existing algorithm to minimize the mismatch power loss in partial shaded photovoltaic (PV) system. The partial shading minimize the power output of PV array. To minimize the effect of partial shading various static and dynamic techniques have introduced in previous researches. In static techniques electrical connection of PV panels are changed but in dynamic techniques physical position of panels are changed. This is called physical reconfiguration techniques. Panels are connected in TCT configuration arranged in OTR pattern. Under various shading pattern performance of photovoltaic system is compared with other ODD EVEN algorithm. The OTR algorithm gives reduced mismatch power loss, improved fill factor and performance ratio. The additional feature is that OTR algorithm is applicable to any size of PV array.