One Time Relocation Algorithm for Performance Betterment of PV Array under Partial Shading

Abstract

As the world is shifting towards technological advancement so the energy requirement is increasing exponentially. Carbon emission created by non-renewable energy sources is the main cause of stress of globe for the sustainability. Society need to move towards clean and green renewable energy like solar energy and wind energy. Solar radiations are available abundantly in nature. Irradiance are converted in to electrical energy by PV array system. But the output of PV array influenced by partial shading. MPPT device are failed to track the peak point due to local and global peak because shade is concentrated at one row or column. Researchers introduced many reconfiguration algorithm i.e. electrical or physical to minimize the effect of shading which are applicable on symmetrical PV array. But this paper presents one time relocation (OTR) algorithm to optimize the output power of unsymmetrical PV array system. It change physical position of module at the time of installation. It provide one time arrangement so time and cost is saved. In this work we have simulated the PV array and compared the OTR with TCT configuration. We improved fill factor, performance ratio and maximum power output of PV array system and reduced the mismatch power loss.