絶縁皮膜の無い積層鋼板間を流れる渦電流及び絶縁必要性の判定指標の検討

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: 2012/09/01

タイトル(英語): Examination of Eddy Current between Steel Sheets without Insulation and Criterion for Determining the Necessity of Insulation

著者名: 赤木　陽（岡山大学工学部電気電子工学科），高橋　則雄（岡山大学工学部電気電子工学科），中野　正典（岡山大学工学部電気電子工学科），土井　祐仁（信越化学工業（株）磁性材料研究所），宮城　大輔（東北大学大学院工学研究科）

著者名(英語): Akira Akagi (Department of Electrical and Electronic Engineering, Faculty of Engineering, Okayama University), Norio Takahashi (Department of Electrical and Electronic Engineering, Faculty of Engineering, Okayama University), Masanori Nakano (Department of Electrical and Electronic Engineering, Faculty of Engineering, Okayama University), Yuhito Doi (Magnetic Materials R & D Center, Shin-Etsu Chemical Co., Ltd.), Daisuke Miyagi (Department of Electronic Engineering, Tohoku University)

キーワード: 接触抵抗，渦電流，有限要素法，絶縁，渦電流損　　contact resistance，eddy current，finite element method，insulation，eddy current loss

要約(英語): In the laminated core of transformers, motors, etc., each electrical steel sheet is usually insulated in order to reduce the eddy current loss. It has been reported that the insulation is not necessary in such a laminated core in some conditions. However, few studies have been performed in quantitative and systematic examination of the relationship between the insulation and eddy current. In this study, the eddy current losses of a core made of SPCC (colded rolled steel sheets) of different widths with and without insulation under various conditions are analyzed by using the finite element method (FEM) and considering the contact resistance. The equivalent circuit of a laminated core without insulation is presented, that can be used for determining the necessity of insulation. It is shown that the increase in the eddy current is affected by the ratio of the resistance of steel to the contact resistance. An experimental investigation is also carried out.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.132 No.9 （2012）

本誌掲載ページ: 899-906 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/132/9/132_899/_article/-char/ja/