TY - GEN
T1 - A Variable Frequency Control (VFC)-based WPT System Featuring Constant Voltage Output, Less Power Stages, and Lower System Costs
AU - Yao, Yousu
AU - Wang, Yijie
AU - Cheng, Haisong
AU - Lu, Kaixing
AU - Guan, Yueshi
AU - Gao, Shanshan
AU - Liu, Xiaosheng
AU - Xu, DIanguo
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/8
Y1 - 2019/8
N2 - Many compensation topologies showing the characteristic of constant voltage output (CVO) have been proposed for wireless power transfer (WPT) systems. However, the output voltages of practical WPT systems using these compensation topologies are not constant due to the influence of input voltage variations, parasitic resistance, parameter errors, and duty cycle loss at light load. To handle with this problem without adding an extra DC-DC converter, variable frequency control (VFC) is introduced into WPT systems. Series-series topology with leakage inductance compensation (SS-LIC) is utilized in this research as it requires only two capacitors. The CVO characteristic of SS-LIC is deduced using fundamental harmonic analysis method. The frequency response of the WPT system utilizing SS-LIC is studied. The determination of operating frequency range was also investigated. PSpice simulations were conducted. The output characteristics with and without VFC were compared. The validity of the proposed voltage regulation method was corroborated. A WPT prototype was built to verify the rightness of theoretical analysis and simulation results. Experiment results agree well with simulation ones, demonstrating the feasibility of the proposed VFC control in WPT systems.
AB - Many compensation topologies showing the characteristic of constant voltage output (CVO) have been proposed for wireless power transfer (WPT) systems. However, the output voltages of practical WPT systems using these compensation topologies are not constant due to the influence of input voltage variations, parasitic resistance, parameter errors, and duty cycle loss at light load. To handle with this problem without adding an extra DC-DC converter, variable frequency control (VFC) is introduced into WPT systems. Series-series topology with leakage inductance compensation (SS-LIC) is utilized in this research as it requires only two capacitors. The CVO characteristic of SS-LIC is deduced using fundamental harmonic analysis method. The frequency response of the WPT system utilizing SS-LIC is studied. The determination of operating frequency range was also investigated. PSpice simulations were conducted. The output characteristics with and without VFC were compared. The validity of the proposed voltage regulation method was corroborated. A WPT prototype was built to verify the rightness of theoretical analysis and simulation results. Experiment results agree well with simulation ones, demonstrating the feasibility of the proposed VFC control in WPT systems.
UR - https://www.scopus.com/pages/publications/85077122746
U2 - 10.1109/ICEMS.2019.8922379
DO - 10.1109/ICEMS.2019.8922379
M3 - 会议稿件
AN - SCOPUS:85077122746
T3 - 2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019
BT - 2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 22nd International Conference on Electrical Machines and Systems, ICEMS 2019
Y2 - 11 August 2019 through 14 August 2019
ER -