A new type of resonant reset forward converter is discussed. Resonant reset of transformer is realized by magnetizing inductance and paralleled capacitors. Properly design the main circuit parameters, both resonant reset of transformer and derating requirements of switch are assured. Theoretical calculation value of resonant capacitor is given, the transformer primary side voltage waveform and voltage and current waveforms of resonant capacitor are obtained, experiment results indicate reliable reset of transformer without saturation.%介绍了一种通过变压器励磁电感与其并联的电容实现谐振磁复位的正激变换器,通过适当设计主电路参数,在不同情况下,能很好保证变压器可靠复位,同时保证开关管满足降额要求.给出了谐振电容的理论计算值,得到了变压器原边电压波形以及谐振电容电压电流的实验波形,实验结果表明变压器能复位且不饱和.
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