圧粉磁心を適用した小型・高効率モータの検討

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2012/05/01

タイトル(英語): Study of High-Efficiency Motors Using Soft Magnetic Cores

著者名: 床井　博洋（（株）日立製作所 日立研究所），川又　昭一（（株）日立製作所 日立研究所），榎本　裕治（（株）日立製作所 日立研究所）

著者名(英語): Hirooki Tokoi (Hitachi Research Laboratory, Hitachi, Ltd.), Shoichi Kawamata (Hitachi Research Laboratory, Hitachi, Ltd.), Yuji Enomoto (Hitachi Research Laboratory, Hitachi, Ltd.)

キーワード: 圧粉磁心，永久磁石モータ，アキシャルギャップ，磁場解析　　soft magnetic core，permanent magnetic motor，axial gap，magnetic field analysis

要約(英語): We have been developed a small and highly efficient axial gap motor whose stator core is made of a soft magnetic core. First, the loss sensitivities to various motor design parameters were evaluated using magnetic field analysis. It was found that the pole number and core dimensions had low sensitivity (≤ 2.2dB) in terms of the total loss, which is the sum of the copper loss and the iron losses in the stator core and the rotor yoke respectively. From this, we concluded that to improve the motor efficiency, it is essential to reduce the iron loss in the rotor yoke and minimize other losses. With this in mind, a prototype axial gap motor is manufactured and tested. The motor has four poles and six slots. The motor is 123mm in diameter and the axial length is 47mm. The rotor has parallel magnetized magnets and a rotor yoke with magnetic steel sheets. The maximum measured motor efficiency is 93%. This value roughly agrees with the maximum calculated efficiency of 95%.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.132 No.5 （2012）

本誌掲載ページ: 574-580 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejias/132/5/132_5_574/_article/-char/ja/