複数巻線を有するワイヤレス電力伝送システムの等価的な結合係数の改善法

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: 2019/07/01

タイトル(英語): Improvement of Equivalent Magnetic Coupling Coefficient of Wireless Power Transfer System with Multi-winding Transmission Coil

著者名: 古川　啓太（長岡技術科学大学），日下　佳祐（長岡技術科学大学），伊東　淳一（長岡技術科学大学）

著者名(英語): Keita Furukawa (Nagaoka University of Technology), Keisuke Kusaka (Nagaoka University of Technology), Jun-ichi Itoh (Nagaoka University of Technology)

キーワード: ワイヤレス電力伝送，多巻線トランス，非共振型電磁誘導方式，デュアルアクティブブリッジコンバータ　　wireless power transfer，multi-winding transformer，non-resonant inductive power transformer，dual active bridge converter

要約(英語): This paper proposes a novel method of improving the overall coupling coefficient of a wireless power transfer system by using a four-winding transformer of which two pairs of windings each are connected in parallel in the primary side and secondary side. By weakening the coupling coefficients kc between the parallel windings, the overall magnetic coupling between the primary side and secondary side of the transformer is improved. In order to confirm the validity of the proposed method, a conventional high-kc four-winding transmission coil and the proposed low-kc four-winding transmission coil are experimentally assessed. Then, the coils are introduced into a non-resonant inductive power transfer system utilizing a dual active bridge converter in order to confirm the correction of the input power factor. As a result, the overall magnetic coupling of the proposed four-winding coils was found to be improved by 17% compared with the overall magnetic coupling of the conventional coil. Moreover, the input power factor for the entire load is corrected with the proposed four-winding coil. Therefore, a low kc is effective in improving the overall magnetic coupling.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.139 No.7 （2019）

本誌掲載ページ: 612-623 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/139/7/139_612/_article/-char/ja/