离网型光伏发电系统的研制，最大功率点跟踪（MPPT）；蓄电池充放电-Development of photovoltaic power generation system from the grid

The dc-ac converter, also known as the inverter, converts dc power to ac power at desired output voltage and frequency. The dc power input to the inverter is obtained an existing power supply network or a rotating alternator through a rectifier or