TY - GEN
T1 - Eliminating DC/DC Converter in LCC-S Compensated WPT Systems with a Switch-Controlled Capacitor for CC-CV Charging
AU - Song, Kaiyin
AU - Pang, Shengzhao
AU - Liang, Bo
AU - Cheng, Bo
AU - Cui, Zhihao
AU - Mao, Zhaoyong
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - In this paper, a wireless power transfer (WPT) system employing an LCC-S compensation network is investigated for battery charging applications. Instead of using a conventional DC/DC converter for output regulation, we propose replacing the secondary-side compensation capacitor with a switch-controlled capacitor (SCC) to achieve constant current-constant voltage (CC-CV) charging. This novel approach leverages the SCC's variable capacitance to adaptively regulate the system output, thereby eliminating the need for additional bulky regulation components while incurring only slight efficiency degradation. We analyzed the detuning characteristics of the LCC-S compensated WPT system and proposed an effective SCC-based output control scheme. The simulation results demonstrate that the use of the SCC enables the desired CC-CV charging profile, with the average charging efficiency being only 0.41% lower than that of the Buck converter-based approach, demonstrating its potential for efficient and compact WPT systems.
AB - In this paper, a wireless power transfer (WPT) system employing an LCC-S compensation network is investigated for battery charging applications. Instead of using a conventional DC/DC converter for output regulation, we propose replacing the secondary-side compensation capacitor with a switch-controlled capacitor (SCC) to achieve constant current-constant voltage (CC-CV) charging. This novel approach leverages the SCC's variable capacitance to adaptively regulate the system output, thereby eliminating the need for additional bulky regulation components while incurring only slight efficiency degradation. We analyzed the detuning characteristics of the LCC-S compensated WPT system and proposed an effective SCC-based output control scheme. The simulation results demonstrate that the use of the SCC enables the desired CC-CV charging profile, with the average charging efficiency being only 0.41% lower than that of the Buck converter-based approach, demonstrating its potential for efficient and compact WPT systems.
KW - Constant Current-Constant Voltage (CC-CV) Charging
KW - Impedance Matching
KW - Output Control
KW - Switch-Controlled Capacitor (SCC)
KW - Wireless Power Transfer (WPT)
UR - https://www.scopus.com/pages/publications/105011070203
U2 - 10.1109/IAS62731.2025.11061605
DO - 10.1109/IAS62731.2025.11061605
M3 - 会议稿件
AN - SCOPUS:105011070203
T3 - Conference Record - IAS Annual Meeting (IEEE Industry Applications Society)
BT - 2025 IEEE Industry Applications Society Annual Meeting, IAS 2025
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2025 IEEE Industry Applications Society Annual Meeting, IAS 2025
Y2 - 15 June 2025 through 20 June 2025
ER -