Efficiency Enhancement of ZVS based PFC converter With Average Current Controlled Scheme

Abstract

To enhance the output voltage regulation and power factor generally Bridge based Power factor correction (PFC) converter is used but it has high conduction losses. To reduce the conduction losses two switch based PFC(bridgeless PFC) is used having less number of component, but at high switching frequency. It has high switching losses that reduces the efficiency. This paper presents an attempt to make the further enhancement of the modified circuit to cease the switching losses to almost zero using ZVS based PFC converter. Analysis has been made on ZVS based PFC converter under load change & supply fluctuation for universal input voltage supply and load transient condition. For this average current mode control is employed. This analytical method has been verified by modeling a simulation with POWERSIM software. The detailed results have been shown and its effectiveness has been presented.