Application of Parity-Time Symmetry to Low-Frequency Wireless Power Transfer System

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門（英文）

発行日: 2022/01/01

タイトル(英語): Application of Parity-Time Symmetry to Low-Frequency Wireless Power Transfer System

著者名: Hiroki Ishida (Department of Applied Physics, Okayama University of Science), Tomoaki Kyoden (National Institute of Technology, Toyama College), Hiroto Furukawa (National Institute of Technology, Toyama College)

著者名(英語): Hiroki Ishida (Department of Applied Physics, Okayama University of Science), Tomoaki Kyoden (National Institute of Technology, Toyama College), Hiroto Furukawa (National Institute of Technology, Toyama College)

キーワード: wireless power transfer，parity time symmetric，low frequency，magnetic induction

要約(英語): In this study, parity-time symmetry (PTS) was applied to a wireless power transfer (WPT) system in the low-frequency range of 30-40kHz. A series-parallel topology was analyzed using the coupled mode theory. It was demonstrated that PTS can be preserved over a long transmission distance even at low frequencies by reducing the self-inductance of the receiver coil. The receiver solenoid coil (dimensions: 71 × 30 × 7.4mm, mass: 45.6g, self-inductance: 119μH) was able to maintain a transmission power of 23±1W and an efficiency of 83±1% within a distance of 12-40mm. In addition, the suitable coil orientation range was significantly increased from ±5° to ±65°. The power conversion efficiency of a switching-mode amplifier based on a class-D inverter reached 97% at low frequency. These results are expected to contribute to the expansion of PTS-WPT applications.

本誌: IEEJ Journal of Industry Applications Vol.11 No.1 （2022）

本誌掲載ページ: 59-68 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejjia/11/1/11_21002583/_article/-char/ja/