TY - GEN
T1 - A CLLC-compensated high power and large air-gap capacitive power transfer system for electric vehicle charging applications
AU - Lu, Fei
AU - Zhang, Hua
AU - Hofmann, Heath
AU - Mi, Chris
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/5/10
Y1 - 2016/5/10
N2 - This paper proposes a CLLC-compensated capacitive power transfer system for electric vehicle charging applications. Four metal plates are utilized to form two capacitors to transfer power through an air-gap distance of 150 mm. The CLLC compensation circuit topology is used on both the primary and secondary sides to resonate with the power transmitting capacitors. The resonance provides high voltage on the plates to increase the system power level. A comparison to the previously proposed LCLC circuit topology is also presented, which shows that the resonance inductance can be reduced. The circuit model of the coupling plates is provided and the capacitance variation with differing misalignments and air-gap distances is also analyzed. A 2.9kW input power CPT system with a CLLC compensation circuit is designed and implemented. The experimental prototype operates at 1MHz, and its dc to dc efficiency is 89.3% at 2.57 kW output power and a 150 mm air gap distance, which validates the effectiveness of the proposed CLLC compensation circuit. In the future, the system will be optimized to increase its efficiency.
AB - This paper proposes a CLLC-compensated capacitive power transfer system for electric vehicle charging applications. Four metal plates are utilized to form two capacitors to transfer power through an air-gap distance of 150 mm. The CLLC compensation circuit topology is used on both the primary and secondary sides to resonate with the power transmitting capacitors. The resonance provides high voltage on the plates to increase the system power level. A comparison to the previously proposed LCLC circuit topology is also presented, which shows that the resonance inductance can be reduced. The circuit model of the coupling plates is provided and the capacitance variation with differing misalignments and air-gap distances is also analyzed. A 2.9kW input power CPT system with a CLLC compensation circuit is designed and implemented. The experimental prototype operates at 1MHz, and its dc to dc efficiency is 89.3% at 2.57 kW output power and a 150 mm air gap distance, which validates the effectiveness of the proposed CLLC compensation circuit. In the future, the system will be optimized to increase its efficiency.
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U2 - 10.1109/APEC.2016.7468099
DO - 10.1109/APEC.2016.7468099
M3 - Conference contribution
AN - SCOPUS:84973638043
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1721
EP - 1725
BT - 2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016
Y2 - 20 March 2016 through 24 March 2016
ER -