A novel ZVS-PWM half-bridge converter with secondary switches

摘要

This paper proposes a ZVS-PWM half-bridge con- verter of a novel control system with secondary switches. The present converter has two switches added in series with The rectifying diodes on the secondary side of the conven- Tional half-bridge converter. A new type of PWM control is Carried out at a fixed frequency. The main switches are Turned on at zero voltage while the secondary switches are Turned on and off at zero voltage and zero current. Various Characteristics of this converter are clarified by the dynamic Analysis and the circuit operation is verified by experiment.