非接触給電における4枚のコイルを用いた高調波磁界低減

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2018/06/01

タイトル(英語): Cancellation of Harmonic Magnetic Field Emitted from Wireless Power Transfer by Use of a Four Coils Setup

著者名: 名雪　琢弥（電力中央研究所），根本　孝七（電力中央研究所），池谷　知彦（電力中央研究所）

著者名(英語): Takuya Nayuki (Central Research Institute of Electric Power Industry), Koshichi Nemoto (Central Research Institute of Electric Power Industry), Tomohiko Ikeya (Central Research Institute of Electric Power Industry)

キーワード: 非接触給電，電気自動車，電磁両立性，漏洩磁界　　wireless power transfer，electric vehicle，electromagnetic compatibility，leakage magnetic field

要約(英語): A bi-directional magnetic-resonant wireless power transfer setup was developed, wherein the secondary circuit was a mirror image of the primary circuit. The setup was a combination of four spiral coils with diameters of 20cm, and inverter units operating at approximately 85kHz of standardization recommended frequencies. Using the setup with two wiring schemes, namely, four-closed circuits and conventional two-closed circuits, maximum efficiencies of 94% and 93%, respectively, were demonstrated successfully with a kW-output at a transfer distance of 10cm. Although the fundamental strength of the leakage magnetic field emitted from the four-closed circuits was almost equal to that from the two-closed circuits, the strengths of the harmonic emissions from the four-closed circuits were from 6 to 9dB less than those from the two-closed circuits because harmonic coil currents of the primary side in the four-closed circuits had directions opposite to each other to cancel out the undesirable harmonic field, whereas, in the two-closed circuits, these coil currents were in the same direction to strengthen up the field twice.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.138 No.6 （2018）

本誌掲載ページ: 522-529 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejias/138/6/138_522/_article/-char/ja/