Research And Implemention Of Wind Power Inverter With Pulse With Modulation Of Single-phase Sine

Contra-variant power as an important part of wind power in the application of new energy sources, and the standard of output voltage wave, the economic rationalization of its construction, and the operation on the safe side all directly influenced the electrical quality of consumers. According to the requirement of 48V input DC(direct current), 220V/50HZ alternating current and rated power, the junction of Boot DC-DC circuit, the high frequency transformer circuit, the direct filtration rectifier circuit, the bridge-type contra-variant circuit and insulate transformer circuit were incorporated as main power loop. The SCM(singlechip) MC68HC90 and accommodation CMOS chip SA4828 were combined to produce SPWM wave in order to concoct pulse duration and then utilized drive circuit to control the main power loop, which making the voltage wave as sine wave. And the difficult of 48V input DC(direct current) change to 220V/50HZ alternating current was resolved, and main circuit was EWB emulated.