Automatic active compensation method of cross-coupling in multiple-receiver resonant inductive coupling wireless power transfer systems

Masataka Ishihara, Keita Fujiki, Kazuhiro Umetani, Eiji Hiraki

研究成果: Conference contribution

10 被引用数 (Scopus)

抄録

The ability to charge to multiple receivers simultaneously with a single transmitter is one of the advantages of resonant inductive coupling wireless power transfer (RIC-WPT) technologies. However, in multiple-receiver RIC-WPT systems, each receiver often suffers from the magnetic coupling among receivers, i.e., cross-coupling. The cross-coupling not only complicates the control of the receivers but also significantly decreases the output power of each receiver. Hence, the purpose of this paper is to propose a compensation method of the influence due to the cross-coupling. To achieve this purpose, we first analyze the requirement to compensate for the influence of the cross-coupling. As a result, we reveal that it is necessary to control the phase of the current in all the receiver to be orthogonal to the phase of the transmitter current. Then, we propose the method to adjust the current phase of each receiver automatically to the desired phase by using only the phase information of the transmitter current, which results in the full compensation of the influence due to the cross-coupling. Furthermore, the proposed method also compensates for the influence of a detuning of the resonant frequency of each receiver due to the natural tolerance. Experiments of a two-receiver RIC-WPT system successfully verify the effectiveness of the proposed method.

本文言語English
ホスト出版物のタイトル2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
出版社Institute of Electrical and Electronics Engineers Inc.
ページ4584-4591
ページ数8
ISBN(電子版)9781728103952
DOI
出版ステータスPublished - 2019 9月
外部発表はい
イベント11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 - Baltimore, United States
継続期間: 2019 9月 292019 10月 3

出版物シリーズ

名前2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019

Conference

Conference11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
国/地域United States
CityBaltimore
Period19/9/2919/10/3

ASJC Scopus subject areas

  • 機械工学
  • 制御と最適化
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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