说明：  运用PQ控制环节，实现有功功率和无功功率的解耦，通过电流环的跟踪控制环节实现电流的跟踪，通过功率控制环节实现功率因数为1，综上的控制实现光伏三相并网，实现最大效率的能源应用
(Using PQ control link to achieve active power and reactive power decoupling to achieve the current track by track control link current loop power control link through to achieve a power factor of 1, the control sum of the three-phase grid-connected photovoltaic achieve, achieve the maximum efficiency of energy use)