BRIDGELESS SINGLE-STAGE TRANSFORMERLESS CONVERTER WITH REDUCED LOSSES FOR LIGHT ELECTRIC VEHICLE CHARGERS

Abstract

The demand for energy-efficient charging systems for light electric vehicles (LEVs) such as e-bikes, erickshaws, and scooters has grown rapidly due to increasing environmental concerns and the need for sustainable transportation solutions. Traditional charging topologies often suffer from high conduction losses, poor power factor, and bulky design when using transformer-based isolated systems. To overcome these challenges, this paper presents a bridgeless single-stage transformerless converter designed to reduce losses and improve power quality for LEV chargers. The proposed system integrates power factor correction with high-efficiency energy conversion in a compact architecture. By eliminating the diode bridge rectifier and transformer stage, the design minimizes conduction losses and enhances overall efficiency. Simulation and experimental analysis demonstrate that the proposed converter achieves significant improvements in power quality, reduced total harmonic distortion (THD), and enhanced efficiency, making it a promising solution for next-generation light EV charging infrastructure