Design method of low-power photovoltaic grid-connected inverter based on XE162FN

This paper proposes a design method of low-power photovoltaic grid-connected inverter. The design method is made up of XE162FN control system, DC-AC converter, DC-AC inverter circuit, signal detection circuit and control circuit. The control algorithm of maximum power point tracking has quickly dynamic response and highly steady state accuracy; the control algorithm of grid-connected can realize inverter operating with the grid steadily and higher quality of current output; the algorithm of island protection is able to detect the island phenomenon and switch on the protection action quickly and accurately.