Dynamic impedance compensation for WPT using a compensator in a three-coil wireless power transfer system
ISSN: 0305-6120
Article publication date: 13 August 2018
Issue publication date: 18 October 2018
Abstract
Purpose
The purpose of this paper is to study the wireless power transfer (WPT) system that always achieves the maximum output power at a fixed angular frequency using the dynamic impedance compensation and also the maximum transfer efficiency.
Design/methodology/approach
An efficient topology of the WPT system is proposed which states that the functions of the relay are transformed into the functions of the compensator in the three-coil WPT system.
Findings
Increasing the ratio of the frequency detuning factor of the compensator relative to the frequency detuning factor of the compensator also causes the curves of the normalized output power and the transfer efficiency to move toward the high frequency direction.
Practical implications
The scheme of the dynamic compensation for the WPT using a compensator is convenient to obtain the dynamic impedance compensation by adding or removing the capacitances or inductances from the compensator.
Originality/value
The functions of the relay are transformed into the functions of the compensator in the three-coil WPT system.
Keywords
Acknowledgements
The work was supported by National Key Basic Research Program of China (2014CB049405).
Citation
Liu, S. and Tan, J. (2018), "Dynamic impedance compensation for WPT using a compensator in a three-coil wireless power transfer system", Circuit World, Vol. 44 No. 4, pp. 171-177. https://doi.org/10.1108/CW-04-2018-0022
Publisher
:Emerald Publishing Limited
Copyright © 2018, Emerald Publishing Limited