single-phase grid-connected inverter system based on LCL filter is established，which combines the features of inverter and active power filter. A composite control strategy for grid-connected inverter with the function of implementing reactive po

对一种由Boost和带LCL滤波器的逆变电路组成的两级式单相光伏并网逆变器进行了研究。-A two-stage single-phase photovoltaic grid-connected inverter has been studied,which consists of a boost DC/DC converter and a DC/AC inverter with LCL filter