This paper introduces the control principle and mathematical model deduction of three-phase photovoltaic system,illuminates mainly the principle of realizing Maximum Power Point Tracking(MPPT) with optimal gradient method.

• 本文介绍了三相光伏系统的系统控制原理和数学模型推导,着重阐述了用最优梯度法实现了最大功率点跟踪(MPPT)的基本原理。