Analysis and performance improvement of independent electric coupled resonance WPT system with impedance transformer

Author

Cheng Yang ; Tsunekawa, Koichi

Author_Institution

Dept. of Comput. Sci. Eng., Chubu Univ., Kasugai, Japan

fYear

2014

fDate

8-9 May 2014

Firstpage

239

Lastpage

242

Abstract

Wireless power transfer (WPT) technology is expected for the next generation power feeding system, which could supply the power to portable devices without any wires. Compare to the magnetic coupled resonance; a WPT system uses electric coupled resonance could provide a higher position of flexibility. In this paper, the concepts of independent electric coupled resonance type WPT system is investigated by using equivalent circuit including: power transfer function, critical coupling point, frequency splitting and optimum port impedance. After a pair of matching loops are added into source and receive side, the power transfer efficiency could has a great improvement is confirmed by using simulation and experiment.

Keywords

equivalent circuits; impedance convertors; inductive power transmission; magnetic resonance; critical coupling point; electric coupled resonance; equivalent circuit; frequency splitting; impedance transformer; magnetic coupled resonance; next generation power feeding system; optimum port impedance; portable devices; power transfer efficiency; power transfer function; wireless power transfer; Antennas; Couplings; Equivalent circuits; Impedance; Integrated circuit modeling; Mathematical model; Resonant frequency; electric coupled resonance; equivalent circuit; impedance matching; wireless power transfer;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Power Transfer Conference (WPTC), 2014 IEEE

Conference_Location

Jeju

Type

conf

DOI

10.1109/WPT.2014.6839571

Filename

6839571