2次コイル位置による負荷電圧変動を抑制できる傾斜巻き1次コイルアレイ式非接触給電のしくみと効果

カテゴリ: 研究会(論文単位)

論文No: SPC18042,MD18042

グループ名: 【D】産業応用部門 半導体電力変換/【D】産業応用部門 モータドライブ合同研究会

発行日: 2018/01/19

タイトル(英語): Mechanism and Effect of Voltage Stability by Secondary Coil Position of Wireless Power Transfer by Gradient Primary Coil Array

著者名: 安倍 秀明(パナソニック)

著者名(英語): Hideaki Abe(Panasonic Corporation)

キーワード: 非接触給電|傾斜コイルアレイ|スポット給電|電圧安定化|フリーポジション|Wireless power transfer|Gradient coil array|Spot feeding|Voltage stabilization|Position free

要約(日本語): 複数の１次コイルをアレイ化し２次コイルの下部にある１次コイルのみを励磁するスポット給電方式が提案されているが、隣り合う１次コイルの辺部上では他の位置よりも多少とも受電電圧が低下する問題があった。筆者は、考案した傾斜巻きコイルを使い１次コイルの厚さを増すことなくコイルアレイ上の全面で受電電圧がより安定化できることを確認した。

要約(英語): Wireless power transfer utilizing magnetic coupling has been practically used for a long time in portable equipment. Furthermore, in the future, the primary coil area tends to broaden, including support for multiple devices. On the other hand, in the primary coil of an area that is excessively wide relative to the secondary coil, magnetic flux is generated also in an area not related to power supply by the exciting current, causing problems such as an increase in noise and standby power. As a solution, a spot feeding system has been proposed in which a plurality of primary coils are arrayed and only the primary coil under the secondary coil is excited. However, in this method, when the secondary coil is small, there is a problem that the received voltage drops more than the other positions on the side portions of the adjacent primary coils. The author has studied how the receiving voltage becomes constant on the entire surface of the coil array and can use the gradient winding coil to stabilize the receiving voltage on the whole surface of the coil array without increasing the thickness of the primary coil was confirmed.

原稿種別: 日本語

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