Investigation on Modified Bridgeless SEPIC PFC Converter Topology for Battery Charging Application

An amazing alternative to traditional internal combustion engine-based automobiles is electric mobility. The main barrier to the growth of electric mobility is the lack of grid-friendly charging stations and the restricted availability of charging infrastructure. The essential component for recharging the onboard batteries and powering the vehicle is the charging infrastructure. The majority of traditional Electric Vehicle (EV) chargers consume distorted line current and have poor power factors, which strains the environment at the end of the power distribution chain. The nonlinear loads call for an improvement in the grid's power quality. A survey on different SEPIC-based PFC converter topologies both with continuous and discontinuous modes are carried out and based on their demerits a modified SEPIC AC-DC PFC converter with reduced output current ripple and enhanced efficiency is proposed for electric vehicle charging application. In this paper, a detailed explanation of its design and simulation framework is presented. Various functional parameters such as supply current THD, supply PF, supply DF, semiconductor stress, efficiency, and output ripple of the suggested converter are computed and compared based on their simulation study.