A novel zero-voltage and zero-current switching PWM DC-DC converterwith reduced conduction losses

摘要

A novel zero-voltage and zero-current switching PWM DC-DCnconverter with low conduction losses is presented in this paper. A newninterleaved two-switch forward soft-switching converter topology isndeveloped to minimize circulating current with no additional auxiliaryncircuits. This converter has many advantages such as less components,nbetter efficiency, high power density and cost efficiency for high powernapplications. The principle of operation is illustrated together withnsteady-state analysis. Moreover, the effectiveness of the proposednconverter topology is verified by implementing a 500 W-100 kHznbreadboard using IGBTs