集中巻永久磁石モータのギャップ変調とこれを考慮した分布巻優劣分岐点の導出

カテゴリ: 研究会(論文単位)

論文No: RM18114

グループ名: 【D】産業応用部門 回転機研究会

発行日: 2018/11/07

タイトル(英語): Gap Modulation of Concentrated-Winding PM motor and Clarification of Theoretical Turning Point against Distributed Winding.

著者名: 高橋 暁史(日立製作所)

著者名(英語): Aekshi Takahashi(Hitachi, ltd.)

キーワード: ギャップ変調|分布巻|集中巻|ＰＭモータ|gap modulation|distributed winding|concentrated winding|PM motor

要約(日本語): 集中巻永久磁石モータ特有のギャップ変調を考慮して、分布巻と集中巻の優劣分岐点を明確化した。両者のインダクタンス差を定式化し、分布巻採用時のコア軸長低減可否を簡便に導出できることを示した。本手法を用いることで、設計初期段階でFEA に頼らずに簡便に分布巻と集中巻の優劣分岐点を明確化することが可能となり、設計期間の大幅な削減が期待できる。

要約(英語): Focusing on the gap modulation of concentrated-winding permanent magnet (PM) motors, superior/inferior branch pointbetween concentrated and distributed windings was clarified. It was found through theoretical formulae that the distributed-windingPM motor has about 10 % larger torque capability than the concentrated-winding whereas its q-axis inductance becomes about10 % larger due to the gap modulation, which leads to the decrease in high-speed operation range. These findings enable motordesigners to easily judge, at initial design stage, whether to reduce core stack length by adopting the distributed winding. Applyingthe above method to a 0.2 kW Nd-Fe-B magnet motor, it was possible to quantify the minimum core stack length to satisfy requiredmaximum overload, not relying on finite element analysis (FEA) but only using the introduced theoretical formulae based on thebenchmark model of the concentrated-winding PM motor. The validity of the approach was demonstrated by the FEA andmeasurement for the designed distributed-winding PM motor.

原稿種別: 日本語

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