Effect of Magnetic Wedge Characteristics on Torque Ripple and Loss in Interior Permanent Magnet Synchronous Motor

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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: 2022/01/01タイトル(英語): Effect of Magnetic Wedge Characteristics on Torque Ripple and Loss in Interior Permanent Magnet Synchronous Motor著者名: Ma nabu Horiuchi (Faculty of Engineering, Shinshu University), Ryoken Masuda (Faculty of Engineering, Shinshu University), Yinggang Bu (Faculty of Engineering, Shinshu University), Masami Nirei (National Institute of Technology, Nagano College), Mitsuhide 著者名(英語): Manabu Horiuchi (Faculty of Engineering, Shinshu University), Ryoken Masuda (Faculty of Engineering, Shinshu University), Yinggang Bu (Faculty of Engineering, Shinshu University), Masami Nirei (National Institute of Technology, Nagano College), Mitsuhide Sato (Faculty of Engineering, Shinshu University), Tsutomu Mizuno (Faculty of Engineering, Shinshu University)キーワード: IPMSM，harmonic loss，torque ripple，magnetic wedge，magnetic composite material要約(英語): An interior permanent magnet synchronous motor (IPMSM) is characterized by high efficiency in a wide range of applications. However, when operating at high speeds, torque ripple and rotor loss occur because of the spatial harmonics generated by fluctuations in the airgap permeance. This study demonstrates the suppression of torque ripple and harmonic loss by magnetic wedges using finite element analysis (FEA). First, the authors examined the torque and loss characteristics by varying the slot opening width and relative permeability of the magnetic wedge. Results indicate that the torque ripple can be suppressed even if the opening width is widened to half the slot pitch. However, this improvement effect saturates when the relative permeability of the magnetic wedge becomes larger than μr = 10. Furthermore, the authors confirmed the effect of the magnetic wedge by visualizing the harmonic components of the eddy current loss. The findings reveal that the eddy current loss represents a trade-off between the stator and rotor when using the magnetic wedge.本誌: IEEJ Journal of Industry Applications Vol.11 No.1 （2022）本誌掲載ページ: 49-58 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/11/1/11_21002574/_article/-char/ja/ Show more