Research of Grid-connected Photovoltaic Inverter

A double direction inverter of grid-connected photovoltaic is discussed in theory.The math model of the system voltage and power grid current is established using analytical method of small signal,a control scheme of the system steady and correspond preferences is designed.Finally,solar grid-connected photovoltaic inverter with power system networking run,and the experiment shows the control system model feasibility and practicability in engineering,it has utility value for development and study of grid-connected photovoltaic invert product.