Review of PV MPPT Based Battery Charging Techniques Under Partial Shading Conditions

Photovoltaic (PV) power systems installations on rooftops of commercial and residential buildings have increased rapidly. Electrical energy storage (EES) systems are required to ensure continuous power delivery in standalone PV systems and need maximum power point tracking (MPPT) to improve their efficiency. However, many commercially available solar charge controllers are ineffectual to track the MPP point during partial shading conditions, thus reducing the output of PV systems when connected to an array of PV panels. This paper provides a comprehensive review of MPPT based battery charge controller (BCC) to solve this problem. This study presents methods to improve the efficiency of a low-cost PV based BCC under partial shading conditions.