DC-DC Converter for EV Charger with Controlling Unit

Abstract

In this paper, charging and discharging of a battery for an Electric vehicle application is done with the help of bidirectional converter with suitable charge controller. Charging of the battery can be done with a full bridge rectifier and DC-DC converter enabling it to operate in G2V mode. In discharging mode, the battery is allowed to discharge through the load for home applications and thereby operating it at V2H mode. This is incorporated, when there is no supply from the grid. The full-bridge rectifier is used for converting AC voltage to DC voltage. Buck converter has a similar application to a transformer where a transformer is used for AC and converter is used for DC. The charging and discharging of the battery, is done by a charge controller which monitors the SOC of the battery and based on that the necessary control action will be taken. This entire system is simulated using MATLAB software and the results are analysed.