Bridge Inductance of Closed Slot Induction Motor for Design Process

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: 2015/11/01

タイトル(英語): Bridge Inductance of Closed Slot Induction Motor for Design Process

著者名: Fuminori Ishibashi (Department of Electrical Engineering, Shibaura Institute of Technology), Makoto Matsushita (Power Systems Company, Power and Industrial Systems R&D Center, Fuchu-Complex, Toshiba Corporation), Sueyoshi Mizuno (Power Systems Company, Po

著者名(英語): Fuminori Ishibashi (Department of Electrical Engineering, Shibaura Institute of Technology), Makoto Matsushita (Power Systems Company, Power and Industrial Systems R&D Center, Fuchu-Complex, Toshiba Corporation), Sueyoshi Mizuno (Power Systems Company, Power and Industrial Systems R&D Center, Fuchu-Complex, Toshiba Corporation)

キーワード: induction motor，closed slot，bridge inductance

要約(英語): In the design of the induction motor, the equivalent circuit is used to predict its performance. The equivalent circuit consists of the magnetizing reactance and iron loss resistance, primary and secondary resistance and primary and secondary leakage reactance.The secondary leakage reactance of the closed slot rotor is not easy to calculate, because the closed slot rotor has a thin magnetic steel sheet bridge, through which the leakage flux passes. The inductance of the bridge changes depending on the B-H characteristics of the magnetic steel sheet.In this paper, a new equivalent B-H characteristics method is developed to calculate the bridge inductance of the closed slot. First, the bridge inductance of the closed slot is examined with experiments, flux by FEM and magnetic energy and magnetic coenergy by FEM. Then, magnetic energy and magnetic coenergy by FEM yields the bridge inductance of the closed slot for a wide slip range characteristics. From the bridge inductance and bar currents, the magnetomotive force and flux density are calculated for the equivalent B-H characteristics.This equivalent B-H characteristics method is able to respond to the inductance of the closed slot bridge from the unsaturated (small ampere-turn) zone of the magnetic steel sheet to the saturated (large ampere-turn) zone accurately. This yields the proper value of the bridge inductance, for which the conventional equations give a value of infinity.

本誌: IEEJ Journal of Industry Applications Vol.4 No.6 （2015）

本誌掲載ページ: 722-727 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/4/6/4_722/_article/-char/ja/