New group of ZVS PWM converters operable on constant frequency and its application to power factor correction circuit

Abstract

A zero voltage switching (ZVS) PWM power converter family is obtained by using a new ZVS PWM module (ZPM) with a saturable inductor which prevents the diode junction capacitors and the commutation inductor from resonating. The new converters show almost all the characteristics of the conventional PWM converters. A boost ZVS PWM converter is applied to a power factor correction circuit. It operates on a continuous conduction mode. Experimental results for output power of 1 kW are presented.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>