INNOVATIVE EXTREME FAST CHARGING STATIONS FOR ELECTRIC VEHICLES WITH ENHANCED PARTIAL POWER PROCESSING

Abstract

The power supply plan for an 
extreme fast charging (XFC) station, which is 
intended to charge many electric cars (EVs) at 
once, is proposed in this article. Galvanic isolation 
is achieved by means of dual-active-bridge based 
soft-switched solid-state transformers, while a 
cascaded H-bridge converter is used for direct 
medium voltage grid interface. By charging each 
EV separately using partial power rated dc–dc 
converters, the suggested method does away with 
redundant power conversion. While only 
processing a portion of the overall battery charging 
power, partial power processing allows for 
individual charging control over each electric 
vehicle. 
Analysis 
is 
done on workable 
implementation plans for the partial power charger 
unit. A charger based on a phase-shifted full-bridge 
converter is suggested. Clear explanations of the 
design and control factors are provided for 
permitting numerous charging stations. The control 
characteristics, functionality, and efficacy of the 
proposed XFC station power supply method are 
validated by the presentation of experimental 
findings obtained from a downscaled laboratory 
test-bed. An efficiency increase of 0.6% at full load 
and 1.6% at 50% load is proven using a 
downscaled partial power converter designed to 
handle just 27% of the battery power. 

dual active bridge (DAB), fast 
charging station, Cascaded H-bridge (CHB) 
converter, dc fast charger, dc–dc power converters, 
energy storage