Design Consideration for High Power Zero Voltage Zero Current Switching Full Bridge Converter with Transformer Isolation and Current Doubler Rectifier

This paper presents the design and analysis and of the proposed zero voltage zero current switching (ZVZCS) full bridge dc-dc converter with transformer isolation and current doubler rectifier for high power and high performance by introducing ZVS for lagging leg and ZCS for leading leg operation It has a simple and robust structure with asymmetrical shifted pulse width modulation technique. The ZVS operation is achieved with the help of transformer leakage inductance and output capacitance of the switches for passive leg and to obtain ZCS operation auxiliary transformer and two diodes are used for leading leg. Validation of the designed parameters are verified by simulation of the proposed converter with a load of 3kW and converter operating frequency is at 20kHz with a feature of current doubler rectifier.