ZVZCS PWM DC-DC converter with energy recovery clamp

Abstract

A novel zero-voltage zero-current switching full-bridge PWM DC-DC converter with controlled secondary side rectifier is presented in this paper. Zero-voltage turn-on and zero-current turn-off for all power switches of the inverter is achieved for full load range from no-load to short circuit by using turn-off snubber and secondary energy recovery clamp. Modified PWM control strategy is used for the converter. The principle of operation is explained and analysed and simulation results are presented.