TY - GEN
T1 - Dual Transformer-Based Single-Stage Converter for EV Fast Charger with Flat Efficiency Characteristics
AU - Geda, Million Gerado
AU - Song, Huigyeong
AU - Ba, Phu Do
AU - Cho, Bumsoo
AU - Kim, Sunju
AU - Choi, Sewan
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - This article presented a reconfigurable bidirectional single-stage converter for fast charging applications. The proposed converter is designed for high-power, and a wide voltage range operation to accommodate both 400V and 800V battery-class electric vehicles. This converter achieved flat efficiency using pre-set AC relays for both EV battery classes. In addition, this article presented optimal control variables to increase conversion efficiency and power quality. As a result, soft switching is achieved from 150 to 920V battery voltage. Experimental results from the single module of the 8.4 kW EV charger prototype are provided to verify the theoretical claims. The peak efficiency of 96.7% is achieved. Furthermore, this converter exhibits flat efficiency performance for all charging battery voltage ranges.
AB - This article presented a reconfigurable bidirectional single-stage converter for fast charging applications. The proposed converter is designed for high-power, and a wide voltage range operation to accommodate both 400V and 800V battery-class electric vehicles. This converter achieved flat efficiency using pre-set AC relays for both EV battery classes. In addition, this article presented optimal control variables to increase conversion efficiency and power quality. As a result, soft switching is achieved from 150 to 920V battery voltage. Experimental results from the single module of the 8.4 kW EV charger prototype are provided to verify the theoretical claims. The peak efficiency of 96.7% is achieved. Furthermore, this converter exhibits flat efficiency performance for all charging battery voltage ranges.
KW - and flat efficiency performance
KW - Fast charging
KW - Wide voltage range
UR - http://www.scopus.com/inward/record.url?scp=85192782695&partnerID=8YFLogxK
U2 - 10.1109/APEC48139.2024.10509315
DO - 10.1109/APEC48139.2024.10509315
M3 - Conference contribution
AN - SCOPUS:85192782695
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1706
EP - 1711
BT - 2024 IEEE Applied Power Electronics Conference and Exposition, APEC 2024
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 39th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2024
Y2 - 25 February 2024 through 29 February 2024
ER -
