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ID 63730
フルテキストURL
著者
Tsunata, Ren Division of Industrial Innovation Sciences Graduate School of Natural Science and Technology, Okayama University
Takemoto, Masatsugu Division of Industrial Innovation Sciences Graduate School of Natural Science and Technology, Okayama University
Ogasawara, Satoshi Graduate School of Information Science and Technology, Hokkaido University
Saito, Tatsuya Sumitomo Electric Industries Ltd.
Ueno, Tomoyuki Sumitomo Electric Industries Ltd.
抄録
In recent years, there has been growing demand for flat electrical machines in order to minimize system size while also maintaining high efficiency. In general, axial flux machines (AFMs) are more suitable for flat form than radial flux machines (RFMs). AFMs usually employ a soft magnetic composite (SMC) for the stator core, and their efficiency can be improved by employing an SMC that has low iron loss. However, this reduces the average torque because there is generally a tradeoff relationship between iron loss and magnetic permeability in SMCs. This article, therefore, proposes an AFM with a coreless rotor structure in which the torque performance is not easily affected by the permeability of the SMC. This article aims to reveal the ideal SMC characteristics for high efficiency in AFMs. First, many virtual SMC materials with different iron loss and permeability are used for simulations of AFMs in order to investigate sensitivity to material properties. The simulations by virtual SMCs take into account the experimental increase in the iron loss. As a result, guidelines for developing SMCs are constructed based on the experimental results. Finally, prototype AFMs employing new SMCs developed by following the guidelines are shown, and it is found that they offer higher efficiency in all operating area than conventional AFMs. In particular, one prototype achieves an extremely high efficiency of over 96% at 6000 r/min, 0.8 Nm in experiments.
備考
© 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
発行日
2022-5
出版物タイトル
IEEE Transactions on Industry Applications
58巻
3号
出版者
Institute of Electrical and Electronics Engineers (IEEE)
開始ページ
3470
終了ページ
3485
ISSN
0093-9994
NCID
AA00667900
資料タイプ
学術雑誌論文
言語
英語
OAI-PMH Set
岡山大学
著作権者
Copyright © 2022, IEEE
論文のバージョン
author
DOI
Web of Science KeyUT
関連URL
isVersionOf https://doi.org/10.1109/tia.2022.3154336
助成機関名
Japan Society for the Promotion of Science
助成番号
20J10951