TY - GEN
T1 - A Multistage Constant-Current Wireless Charging Method Using Pulse Frequency Modulation for Multistorey EV Carparks
AU - Wang, Yixuan
AU - Liu, Wei
AU - Niu, Shuangxia
AU - Xue, Zhiwei
AU - Chau, K. T.
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024/9/19
Y1 - 2024/9/19
N2 - For the wireless charging system in multistorey electric vehicle carparks, this paper proposes a multistage constant-current (MSCC) charging method using the pulse frequency modulation (PFM) for series-series inductive wireless power transfer. The proposed system has the advantages of fast charging, wide-range zero voltage switching (ZVS), low control complexity, and less charging harmonics. In addition, the PFM-MSCC charging process offers reduced switching frequency and reduced switching losses while avoiding the use of additional DC-DC converters, thus allowing for a significant improvement in efficiency. A new equivalent circuit model based on lithiumion batteries is developed for verification. Finally, the ZVS and zero phase angle operations can be readily realized, and the system efficiency of the whole charging process can reach up to 94.5%. Both theoretical analysis and results verify the feasibility and effectiveness of the proposed PFM-MSCC control strategy.
AB - For the wireless charging system in multistorey electric vehicle carparks, this paper proposes a multistage constant-current (MSCC) charging method using the pulse frequency modulation (PFM) for series-series inductive wireless power transfer. The proposed system has the advantages of fast charging, wide-range zero voltage switching (ZVS), low control complexity, and less charging harmonics. In addition, the PFM-MSCC charging process offers reduced switching frequency and reduced switching losses while avoiding the use of additional DC-DC converters, thus allowing for a significant improvement in efficiency. A new equivalent circuit model based on lithiumion batteries is developed for verification. Finally, the ZVS and zero phase angle operations can be readily realized, and the system efficiency of the whole charging process can reach up to 94.5%. Both theoretical analysis and results verify the feasibility and effectiveness of the proposed PFM-MSCC control strategy.
KW - Multistage constant current charging
KW - pulse frequency modulation
KW - wireless power transfer
UR - https://www.scopus.com/pages/publications/85206081682
U2 - 10.1109/APWCS61586.2024.10679291
DO - 10.1109/APWCS61586.2024.10679291
M3 - Conference article published in proceeding or book
AN - SCOPUS:85206081682
T3 - 2024 IEEE VTS Asia Pacific Wireless Communications Symposium, APWCS 2024
SP - 1
EP - 5
BT - 2024 IEEE VTS Asia Pacific Wireless Communications Symposium, APWCS 2024
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2024 IEEE VTS Asia Pacific Wireless Communications Symposium, APWCS 2024
Y2 - 21 August 2024 through 23 August 2024
ER -