Non-Isolated On-board Battery Charger with Wide Output Voltage Range for e-Transportation

In electric transportation, on-board chargers (OBCs) alleviate worries about the need to often charge the battery packs because different electric vehicle (EV) engine types have varying requirements for input power supplies and battery pack voltages. A single-phase, non-isolated OBC for electric vehicles is presented in this paper. Primary benefit of this on-board charger (OBC) is its ability to maintain excellent input power quality across a wide range of output voltage conversions, which is essential for efficiently charging electric vehicle (EV) batteries. Specifically, it can accommodate an output voltage range of 150 V to 400 V , making it adaptable to different kinds of batteries and charging conditions. This wide output voltage range ensures that an OBC can handle different EV battery specifications and charging requirements, providing reliable and efficient charging performance. To facilitate charging of a broad range of EVs, a controller is designed that maintains on grid side’s unity power factor, while controlling output voltage buck and boost operations with a seamless transition. Performance of the proposed charger is verified using MATLAB simulation for an input ac supply of 230 V and is compared with different topologies available in the literature.