An active-clamping current-fed push-pull converter for vehicle inverter application and resonance analysis

A resonant current-fed push-pull converter with active clamping is investigated for vehicle inverter application in this paper. A communal clamping capacitor and a voltage doubler topology are employed. Moreover, two kinds of resonances to realize ZVS ON of MOSFETs or to remove reverse-recovery problem of secondary diodes are analyzed and an optimized resonance is utilized for volume restriction. At last, a 150W prototype with 10V to 16V input voltage, 360V output voltage is implemented to verify the design.

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