Electrical Vehicle Charger With Voltage-Based Controller

Abstract

Connecting electrical vehicle (EV) to the grid has faced many challenges. In this paper on board and off board charging schemes for EV is proposed based on voltage and state of charge (SOC). An adaptive controller is designed which resolve many problems faced by previous charging schemes. Controller compares the EV voltage at point of charging (POC) with the predefined reference voltage and reduces charging as POC voltage approaches this reference. Battery SOC and owner’s preferred end of charge time are taken into account for reduced charging rates. Extensive simulation results have been shown to validate the proposed controller. Controller performance checked by considering voltage control devices in distribution system to maintain the system within acceptable limits. Bidirectional controlling has also been tested.V2G, V2V schemes are also implemented using bidirectional converter.