Examination of Enhancing Efficiency of Axial Gap Motor in High Speed and High Torque Region by Adopting Neodymium Bonded Magnet

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: 2021/07/01

タイトル(英語): Examination of Enhancing Efficiency of Axial Gap Motor in High Speed and High Torque Region by Adopting Neodymium Bonded Magnet

著者名: Ren Tsunata (Graduate School of Natural Science and Technology, Okayama University), Masatsugu Takemoto (Graduate School of Natural Science and Technology, Okayama University), Satoshi Ogasawara (Graduate School of Information Science and Technology, Hokk

著者名(英語): Ren Tsunata (Graduate School of Natural Science and Technology, Okayama University), Masatsugu Takemoto (Graduate School of Natural Science and Technology, Okayama University), Satoshi Ogasawara (Graduate School of Information Science and Technology, Hokkaido University), Koji Orikawa (Graduate School of Information Science and Technology, Hokkaido University), Tatsuya Saito (Sumitomo ElectricIndustries, Ltd.), Tomoyuki Ueno (Sumitomo ElectricIndustries, Ltd.)

キーワード: Axial gap motor，Neodymium bonded PM，Neodymium sintered PM，Ferrite PM，Eddy current loss，Soft magnetic composite

要約(英語): In recent years, more than half of the electric power generated in the country is being consumed by motors. Therefore, high performance motors are desired especially for industrial applications. In addition, it is desirable to reduce motor size. Recently, motors called axial gap type have been proposed and researched to achieve both high torque and small size. Axial gap motors are generally suitable for applications requiring flat shape such as a disk. Conventional axial gap motors frequently employ Nd sintered permanent magnets (PMs) to achieve high torque. However, axial gap motors with Nd sintered PMs are not very efficient at high rotational speed due to the eddy current loss arising in the PM. Axial gap motors that use ferrite PMs have also been proposed, but torque density is low. In this paper, an axial gap motor using Nd bonded PMs is proposed to achieve high efficiency in the high-speed and high-torque region. The proposed axial gap motor using Nd bonded PM is compared with other axial gap motors employing Nd sintered PM and ferrite PM through 3D-FEA and experiments. Consequently, it was found that the Nd bonded PM is more effective in enhancing the efficiency of an axial gap motor in the high-speed and high-torque region, compared with Nd sintered PM and ferrite PM.

本誌: IEEJ Journal of Industry Applications Vol.10 No.4 （2021）

本誌掲載ページ: 487-496 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/10/4/10_20004135/_article/-char/ja/