The Simulation Research of Maximum Power Point Tracking Based on Asymmetric Fuzzy-PI Control for Photovoltaic Grid-Connected System

According to the characteristics of photovoltaic array, a novel asymmetric fuzzy PI control method is introduced for MPPT of photovoltaic system. Photovoltaic energy generation system can track the maximum power of PV cell rapidly by using asymmetric fuzzy control. On the base of asymmetric fuzzy control, an added PI control is used to eliminate the power oscillation around maximum power point. Simulation results have verified the good performance of the proposed method