TY - GEN
T1 - Real-time Front-end Monitoring of Load, Mutual Inductance, and SOC in SS-Compensated Wireless Charging Systems
AU - Zeng, Junming
AU - Wu, Jiayang
AU - Li, Kerui
AU - Yang, Yun
AU - Ron Hui, Shu Yuen
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023/8
Y1 - 2023/8
N2 - This paper proposes a fast, accurate, and low-cost front-end real-time estimation method based on a two-coil series-series compensated wireless power transfer (WPT) system that allows the resonant frequencies of the transmitter and receiver resonators to be different. The proposed method offers simultaneous multiple functions of parameter estimation, primary-side control, and state of charge (SOC) monitoring. Its implementation is simple because only current detection on the primary side is needed. With the real-time estimation of the mutual inductance and load resistance, the output voltage and output current can be determined and regulated by the phase shift control with the primary side control. This implies that the constant-current (CC) and constant-voltage (CV) charging mode of the Li-ion battery can be selected with primary-side control, and the SOC can be calculated in real time. The simulation and experimental results show that the mutual inductance and the load can be estimated accurately in real time. With accurate estimation results, CC-CV mode charging can be realized, and the real-time SOC can be observed on the primary side accurately.
AB - This paper proposes a fast, accurate, and low-cost front-end real-time estimation method based on a two-coil series-series compensated wireless power transfer (WPT) system that allows the resonant frequencies of the transmitter and receiver resonators to be different. The proposed method offers simultaneous multiple functions of parameter estimation, primary-side control, and state of charge (SOC) monitoring. Its implementation is simple because only current detection on the primary side is needed. With the real-time estimation of the mutual inductance and load resistance, the output voltage and output current can be determined and regulated by the phase shift control with the primary side control. This implies that the constant-current (CC) and constant-voltage (CV) charging mode of the Li-ion battery can be selected with primary-side control, and the SOC can be calculated in real time. The simulation and experimental results show that the mutual inductance and the load can be estimated accurately in real time. With accurate estimation results, CC-CV mode charging can be realized, and the real-time SOC can be observed on the primary side accurately.
KW - Front-end monitoring
KW - real-time estimation
KW - SOC estimation
KW - wireless power transfer
UR - http://www.scopus.com/inward/record.url?scp=85170646269&partnerID=8YFLogxK
U2 - 10.1109/WPTCE56855.2023.10215913
DO - 10.1109/WPTCE56855.2023.10215913
M3 - Conference article published in proceeding or book
AN - SCOPUS:85170646269
T3 - 2023 IEEE Wireless Power Technology Conference and Expo, WPTCE 2023 - Proceedings
BT - 2023 IEEE Wireless Power Technology Conference and Expo, WPTCE 2023 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 IEEE Wireless Power Technology Conference and Expo, WPTCE 2023
Y2 - 4 June 2023 through 8 June 2023
ER -