Extreme Fast Charging (“XFC”) for Plug-in Electric Vehicles

Subhashish Bhattacharya

Project runs from 01/01/2020 to 07/31/2022
$400,003

Extreme fast charging (“XFC”) for plug-in electric vehicles: Medium Voltage XFC AC-DC Power Electronic converter System:
The schematic of three-phase medium voltage extreme fast charging AC-DC power electronic conversion system (XFC-ACDC) is shown in Fig. 1. The XFC-ACDC unit consists of three phase-modules whose input AC terminals are connected in Y-connection and their DC outputs are connected in parallel. The inputs of XFC-ACDC is connected to a 10 kV (Line-Line) three-phase MVAC grid and the output connected to a 1000 V DC bus across which various charging vehicles and equipment are integrated. Each phase-module of XFC-ACDC consists of a cascaded H-bridge converter and multiple dual active bridge converters (DABs). 1.7 kV SiC switches will be used for implementing the CHB and DAB converters. The voltages across the DC link capacitors of CHB will be maintained at 1.2 kV. The DABs will be regulated to maintain a voltage of 1000 V at their outputs.