TY - GEN
T1 - CC/CV ZVS WPT system without any feedback from receiver to transmitter
AU - Komanaka, Ayano
AU - Yan, Jiaxin
AU - Komiyama, Yutaro
AU - Xie, Yinchen
AU - Konishi, Akihiro
AU - Nguyen, Kien
AU - Sekiya, Hiroo
AU - Wei, Xiuqin
AU - Zhu, Wenqi
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - In this paper, a WPT system that can switch between constant current (CC) and constant voltage (CV) in a single circuit is proposed. In the proposed WPT system, the CC and CV modes are achieved by varying the on-duty ratio of the buck converter. In addition, the proposed system also keeps the zero-voltage switching against coil misalignment and load variations without any information feedback from the rectifier to the inverter. This is because the load-independent behavior is built into the proposed system. The experimental results are consistent with the analytical predictions, which show the validity of the proposed circuit design strategy and the derived analytical expressions. Under rated conditions, the output power was 36.9 W and the power conversion efficiency was 86 % at the operating frequency of 6.78 MHz.
AB - In this paper, a WPT system that can switch between constant current (CC) and constant voltage (CV) in a single circuit is proposed. In the proposed WPT system, the CC and CV modes are achieved by varying the on-duty ratio of the buck converter. In addition, the proposed system also keeps the zero-voltage switching against coil misalignment and load variations without any information feedback from the rectifier to the inverter. This is because the load-independent behavior is built into the proposed system. The experimental results are consistent with the analytical predictions, which show the validity of the proposed circuit design strategy and the derived analytical expressions. Under rated conditions, the output power was 36.9 W and the power conversion efficiency was 86 % at the operating frequency of 6.78 MHz.
KW - buck converter
KW - constant current (CC)
KW - constant voltage (CV)
KW - load-independent (LI) inverter
KW - rectifier
KW - wireless power transfer (WPT)
KW - ZVS
UR - https://www.scopus.com/pages/publications/105010631686
U2 - 10.1109/ISCAS56072.2025.11044113
DO - 10.1109/ISCAS56072.2025.11044113
M3 - Conference contribution
AN - SCOPUS:105010631686
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
BT - ISCAS 2025 - IEEE International Symposium on Circuits and Systems, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2025 IEEE International Symposium on Circuits and Systems, ISCAS 2025
Y2 - 25 May 2025 through 28 May 2025
ER -