간이 스위칭법에 의한 단상 역률개선형 컨버터

For decrease the harmonic current components of the power source, a first method is insert the choke coil that used the choke Input type rectifier, the booster chopper circuit and buck chopper circuit. And the several method are studying like as the PWM (Pulse Width Modulation) converter and the active filter type witch is used the high frequency switching and the sinusoidal wave formed input current. In this type, there are many problem as a low efficiency, Increased the noise, the high leakage current and cost up by the high frequency switching For improve this problems, the partlal resonan method 1S used on the booster inducter and lossles snubber condenser. This method decreased the distortion factor has lower harmonic components than the hard switching and there is no switching loss by the ZCS(Zero Current Switching) at switch turn-on and the ZVS(Zero Voltage switching) at switch turn-off