中文摘要：

根据光伏电池的特性,并对其功率电压曲线进行分析,把非对称模糊-PI控制应用到光伏发电MPPT控制中,非对称模糊控制能快速响应外界环境的变化,使光伏系统始终工作在最大功率点;同时加入PI控制可以有效消除系统在最大功率点附近的功率振荡现象.仿真结果表明该方法在外部环境变化时能快速准确地跟踪光伏电池的最大功率点,具有良好的动态和稳态性能.

英文摘要：

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