摘要
提出一种零电压、零电流软切换的控制方法，在半个工频周期中，把控制环节切换成五个不同的工作方式，通过充电、放电及谐振模式使整流电路的输入电流趋近于正弦波变化规律，从而减少高次谐波分量，有效地提高了输入功率因数。
A control method for the soft switching with zero voltage and zero current is proposed.In a semi period of the mains frequency, it switches the control link into five different operating patterns, and through charge, discharge and resonance mode selection, the variation of the input current to the rectification circuit can be made to approach a sine wave. As a result,not only the higher harmonic components can be reduced, but also the input power factor is effectively increased.
