High-Performance Single-Phase Bi-Directional Novel On-Board Charger for Electric Vehicles

The design and development of a 550 W non-isolated single-phase two-stage level-1 bidirectional on-board battery charger (OBC) for electric vehicles (EVs) have been discussed in this article, which is also capable of supplying the utility grid's reactive power needs. There are two stages in this topology. The first stage consists of a full bridge bidirectional AC to DC converter, and the second stage consists of a half-bridge bidirectional DC to DC converter with enhanced vehicle-to-vehicle (V2V) capabilities for emergency roadside charging assistance scenarios. In an emergency, if there is not a charging station nearby and the battery is dead, EVs can use this feature to charge from other EVs. It can also work like a regular vehicle-to-grid (V2G) or grid-to-vehicle (G2V) system. The suggested charging topology has a maximum efficiency of 99.09%, a power factor of 0.99, and a total harmonic distortion (THD) of 6.31%. MATLAB/Simulink is used to develop and simulate the suggested EV charger, and simulation results are compared with the other on-board chargers in the literature.