Design of Household Photovoltaic Grid-connected Inverter Based on STC

PV grid connected power generation is the trend at present in the world and the grid-connected inverter is core part of PV power generation system, so high quality and low cost of inverter power supply become the focus of research. According to the characteristics of average household power, a type of photovoltaic generation system that is designed based on STC meet the need of power uses and a new type of control strategy of maximum power point tracking is suggested and make a prototype. The results show that the system can control simply, work stably, track the maximum power point faster and greatly improve the output power.