Resonant Circuit with Soft-Switching Performance of a Boost Converter for PFC with ZVS and/or ZCS

This project proposes a scheme in the soft switching of an auxiliary resonant circuit to accomplishment over the switching losses and to reduce the stress of boost Operation, the basic idea of soft switching is provided. Zero voltage conduction takes place at a closed switch for which a Conventional PWM boost converter is used, a resonant path with auxiliary soft-switch in the application of power factor correction. An auxiliary resonant circuit is used to activate the main IGBT switch to turn it on over a zero voltage condition of the switch and to turn it off during zero current condition parallelly executing together with turn on and off of the switch.