A Front End Power-Factor-Corrected Converter Fed Two Stage Battery Charger for Electric Vehicles

The effectiveness and efficiency of the method adopted for battery chargers with low input current distortion and better power factor are demanding for Electric Vehicles (EVs). On-Board-Charger (OBC) consists of two stage converters which includes the front end Power Factor Corrected (PFC) stage followed by a DC-DC converter. This paper presents a front end power factor corrected on-board battery charger for EVs. Bridgeless boost converter topology with less number of switches is selected as the PFC stage for battery charger and it is compared with other bridgeless topologies. Front end PFC converter followed by LLC resonant DC-DC converter is used here to develop the battery charger. A 48 V, 24Ah Li-ion battery pack is used as energy storage to drive EV and its charging through the proposed converter scheme is analysed using MATLAB/SIMULINK. The simulation results show the effectiveness of the proposed scheme.