Implementation of 60-kW fast charging system for electric vehicle

Abstract

This paper instructs implementation of electric vehicle (EV) fast charging system which complies with the international standard related with EV conductive charging system. Concretely, design issues and the consideration of EV fast charging system components are presented. In view of this, this paper proposes the 60-kW fast charging system which is consists of a master controller communicating with battery managements system (BMS) and EV for safe charging, a smart meter for billing and metering, a charging connector and the output stage formed by six modules of high-efficiency 10kW DC-DC converter for stable output with the input module for passive power factor correction and reducing the ripple of D.C. voltage, The charging system generates output voltage ranges from 50-V to 500-V and maximum output current of 150-A. And, it is tested with a variety of batteries aimed from NEV (Neighborhood Electric Vehicle) to full-speed EV and EV simulator consisted of 20kWh LiFePO2 battery to verify excellent performance as a fast charging system. The developed EV fast charging system is installed at Korean EV test infrastructure and practical charging test with various kinds of EVs has been now performing.