Validation and Design of a Modular Three-Phase WPT System with Improved Misalignment Tolerance by Using an Effective Resonant Frequency Stabilization Technique

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: 2024/11/01

タイトル(英語): Validation and Design of a Modular Three-Phase WPT System with Improved Misalignment Tolerance by Using an Effective Resonant Frequency Stabilization Technique

著者名: Ching-Ming Lai (Department of Electrical Engineering, National Chung Hsing University), Hao-En Liu (Department of Electrical Engineering, National Chung Hsing University), Tomokazu Mishima (Department of Oceanology, Marine Technology and Engineerings Divi

著者名(英語): Ching-Ming Lai (Department of Electrical Engineering, National Chung Hsing University), Hao-En Liu (Department of Electrical Engineering, National Chung Hsing University), Tomokazu Mishima (Department of Oceanology, Marine Technology and Engineerings Division, Faculty of Oceanology, Kobe University)

キーワード: wireless power transfer (WPT)，modular three-phase system，resonant frequency stabilization (RFS)，PTE optimization，misalignment tolerance improvement

要約(英語): In modular three-phase wireless power transfer (WPT) systems, efficiency is crucial, and the consistency of the resonant frequency in each phase module directly affects efficiency. This paper discusses an effective resonant frequency stabilization (RFS) technique for adjusting the resonant compensation capacitor parameters to correct the unbalanced resonant frequency in each phase caused by coil misalignment or variations in the transmission gap and the natural tolerance of the transmitter (Tx)/receiver (Rx) coil geometry. The method compensates for misalignment tolerance and enhances overall system performance by making these adjustments. To validate the proposed concept, experimental results have been conducted, demonstrating that the system is capable of transferring 11kW over a distance of 180 to 250mm. A significant improvement in power transfer efficiency (PTE) can be achieved, up to a 3.10% increase (saving 406.3W of power) under coil alignment. Additionally, even with a 100mm misalignment between Tx/Rx coils, the optimized system can still achieve an efficiency improvement of up to 4.09% (saving 599.7W of power). Finally, the main contribution of this paper is introducing a modular three-phase WPT system design method, offering an effective solution for stabilizing resonant frequencies compared to alternative topologies, and is well-suited for commercial purposes.

本誌: IEEJ Journal of Industry Applications Vol.13 No.6 （2024）

本誌掲載ページ: 669-682 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/13/6/13_24001943/_article/-char/ja/