An Improved Power Quality EV Charger Using a Modified Bridgeless Cuk Converter

A modified bridgeless (BL) Cuk converter-assisted electric vehicle (EV) charger is proposed in this study. It offers an EV charging option that is both inexpensive and has a high power density. The charger's efficiency is increased since it uses fewer devices to operate during a switching cycle. This lowers the additional conduction loss that a typical charger's diode bridge rectifier would otherwise experience. A flyback converter synchronizes the commands for charging batteries during periods of constant voltage and constant current. The proposed charger uses AC mains to draw a sinusoidal current, and it reduces the supply current's total harmonic distortion (THD) to the IEC 61000-3-2 standard's allowable limits. With low reverse recovery losses in circuit diodes and the desirable inherent zero current switching operation, the proposed modified Cuk converter assisted charger is constructed in discontinuous conduction mode (DCM). MATLAB/Simulation platform is used here to assess the enhanced performance of the modified BL Cuk assisted EV charger.