GaN Based Modified Integrated On-Board Charger Configuration Using Minimum Additional Active and Passive Components

In this paper, a GaN based modified integrated on-board charger (IOBC) using a low value zero sequence inductance of traction motor and an inverter for class A and B segment electric vehicles (EV's) with dual power conversion stages is proposed. In the modified configuration, the traction motor and the inverter will be used as components in the back end DC to DC buck converter instead of in the front end AC to DC boost converter as available in the conventional IOBC configuration. The modified IOBC configuration satisfies the permissible THD distortion limit of the Japanese utility companies and also keep the output peak to peak battery current ripple within the specified limits. The feasibility of the modified IOBC configuration is verified from suitable simulation and experimental results.