Design of 2kW DC Charger for Two Wheelers

Abstract

: The demand for Electric Vehicles is increasing day by day. EVs are silent, nonpolluting and produce zero emissions. This paper presents the design of a dc charger that performs the necessary functions for charging EV battery. An EV charger is a component in EV environment that supplies power for recharging the EV battery. Usually, charging an electric car seems to be very simple process, implying that one can plug one’s car into a charger that is connected to the electric grid. However, it is not as that simple. It depends on the types of EVSE that one has deployed. Offboard DC Charger is connected to the premises wiring of the mains ac supply network .It is designed to be separate and operate entirely off the vehicle. In the offboard dc charger, direct current electrical power is delivered directly to the vehicle. The power module in a DC fast charger consists of an AC-to-DC rectifier converter and an isolated DC/DC converter. The AC-to-DC rectifier is power factor correction stage in which a Vienna Rectifier based PFC converter is used. The Isolated DC-DC Converter used here is the Phase Shift Full Bridge DC-DC converter. A 2 kW prototype of the offboard DC Charger is designed and simulated in MATLAB/Simulink R2018b.