Si傾斜磁性材料の鉄損に及ぼす圧縮応力の影響

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: 2015/12/01

タイトル(英語): Effect of Compressive Stress on Iron Loss of Gradient Si Steel Sheet

著者名: 尾田　善彦（JFEスチール スチール研究所），平谷　多津彦（JFEスチール スチール研究所），笠井　勝司（JFEスチール スチール研究所），大久保　智幸（JFEスチール スチール研究所），千田　邦浩（JFEスチール スチール研究所），千葉　明（東京工業大学 大学院理工学研究科 電気電子工学専攻）

著者名(英語): Yoshihiko Oda (Steel Research Laboratory, JFE Steel Corporation), Tatsuhiko Hiratani (Steel Research Laboratory, JFE Steel Corporation), Shoji Kasai (Steel Research Laboratory, JFE Steel Corporation), Tomoyuki Okubo (Steel Research Laboratory, JFE Steel Corporation), Kunihiro Senda (Steel Research Laboratory, JFE Steel Corporation), Akira Chiba (Department of Electrical and Electronic Eng., Graduate School of Science and Eng., Tokyo Institute of Technology)

キーワード: 鉄損，電磁鋼板，Si傾斜磁性材料，焼きばめ，圧縮応力，モータ　　iron loss，electrical steel sheet，gradient Si steel sheet，heat-shrink，compressive stress，motor

要約(英語): A gradient Si steel sheet, which has high Si content in the surface layer and low Si content in the center of the thickness, shows extremely low iron loss in the high frequency range. In this paper, the magnetic properties of gradient Si steel sheets under compressive stress were investigated. In a 3.5%Si steel sheet, the iron loss under compressive stress increases with increase in compressive stress. On the other hand, a gradient Si steel sheet shows extremely low iron loss under compressive stress. This decrease is due to the residual tensile stress in the surface layer of the gradient Si steel sheet. To evaluate the effect of core materials on the iron loss of the motor, we fabricated IPM (Interior Permanent Magnet) motors using 3%Si steel, 6.5%Si steel, and gradient Si steel sheets. In the motor using a 3%Si steel sheet, the motor loss increases after the heat shrinking. On the other hand, in the motors using 6.5%Si steel and gradient Si steel sheets, the motor loss shows little change after the heat shrinking.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.135 No.12 （2015）

本誌掲載ページ: 1199-1206 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/135/12/135_1199/_article/-char/ja/