TY - GEN
T1 - Enhanced EV Charging Experience with an Ultra-rapid Charger and 800-V Battery
AU - Li, Zilin
AU - Cheng, Ka Wai Eric
AU - Chan, Kevin H.W.
AU - Hu, Jiefeng
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022/9
Y1 - 2022/9
N2 - It is promising to achieve zero vehicular emissions by electricity-driven vehicles, and impressive development has been reported. Nevertheless, driving range anxiety is a long-standing issue that hinders the further public acceptance of electric vehicles (EVs). The issue is mainly caused by the driving range per full charge and long charging time, which can be addressed by increasing the charging power of EV batteries, leading to ultra-rapid DC chargers and high-voltage EV batteries. This paper is aimed to investigate the EV charging time with an ultra-rapid DC charger and 800-V battery. A two-stage charging system is first developed, including an active front-end AC-DC converter, three-phase dual active-bridge (3p-DAB), and associated controllers. The operation principles of 3p-DAB are derived with details. Then, the charging system is realized on a real-time simulator, and impacts of the charging current setting are investigated on the EV battery voltage, charging current, and charging power. Based on real-time simulation results, recharging times with different charging current settings are analyzed and compared with details. Finally, the paper is concluded with findings on the relationship between charging current, battery SoC, and total charging time.
AB - It is promising to achieve zero vehicular emissions by electricity-driven vehicles, and impressive development has been reported. Nevertheless, driving range anxiety is a long-standing issue that hinders the further public acceptance of electric vehicles (EVs). The issue is mainly caused by the driving range per full charge and long charging time, which can be addressed by increasing the charging power of EV batteries, leading to ultra-rapid DC chargers and high-voltage EV batteries. This paper is aimed to investigate the EV charging time with an ultra-rapid DC charger and 800-V battery. A two-stage charging system is first developed, including an active front-end AC-DC converter, three-phase dual active-bridge (3p-DAB), and associated controllers. The operation principles of 3p-DAB are derived with details. Then, the charging system is realized on a real-time simulator, and impacts of the charging current setting are investigated on the EV battery voltage, charging current, and charging power. Based on real-time simulation results, recharging times with different charging current settings are analyzed and compared with details. Finally, the paper is concluded with findings on the relationship between charging current, battery SoC, and total charging time.
KW - 800-V battery
KW - DC charger
KW - electric vehicle
KW - state-of-charge
KW - three-phase dual active-bridge
UR - http://www.scopus.com/inward/record.url?scp=85149127578&partnerID=8YFLogxK
U2 - 10.1109/PESA55501.2022.10038374
DO - 10.1109/PESA55501.2022.10038374
M3 - Conference article published in proceeding or book
AN - SCOPUS:85149127578
T3 - Proceedings of the 9th International Conference on Power Electronics Systems and Applications, PESA 2022
BT - Proceedings of the 9th International Conference on Power Electronics Systems and Applications, PESA 2022
A2 - Cheng, Ka-wai Eric
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 9th International Conference on Power Electronics Systems and Applications, PESA 2022
Y2 - 20 September 2022 through 22 September 2022
ER -