積層鉄心における層間短絡損失解析

カテゴリ: 研究会(論文単位)

論文No: RM15129

グループ名: 【D】産業応用部門 回転機研究会

発行日: 2015/09/29

タイトル(英語): Analysis of Loss Due to Short Circuit between Laminated Steels in Laminated Core

著者名: 開道 力(北九州工業高等専門学校　)

著者名(英語): Chikara Kaido(Kitakyushu National College of Technology )

キーワード: 電磁鋼板|積層|短絡|渦電流損|分布定数回路|集中定数回路|electrical steel sheet|lamination|short circuit|eddy current loss|distributed constant circuit|lumped constant circuit

要約(日本語): 層間結束などにより層間短絡状態にある鉄心では短絡電流は短絡部と積層鉄心表面に流れるが、一般的な積層厚さの鉄心では、積層鉄心表面部の損失よりも、短絡部での損失が大きく、積層鉄心表面近傍を除き、一定の短絡電流が短絡部に流れている。層間短絡の影響は２箇所以上の短絡部により生じ、短絡部を鎖交し変化する磁束で生じるので、鉄心構造と、層間結束や鉄心固定の影響を大きく受ける。

要約(英語): This paper discusses the effects of short circuits between laminated steets, which are due to interlocking (V-clinching, round-cl., or welding) or core-frame fitting (press or shrink) on the characteristics of electrical steel sheet laminated cores. Short circuit current flows through short circuit parts and lamination surface, and short circuit part flowing current is constant except lamination surface. Then short circuit part loss is generally larger than lamination core loss (lamination surface loss). The short circuit loss is influenced by core configuration and lamination conditions of interlocking and fitting, because short circuit current is induced by more than 2 short circuits and interlinking flux. Short circuit loss is represented by lamination height ratio h to characteristic lamination height x0 where short circuit part resistance is equal to short circuit current flowing part core resistance, short circuit loss ratio KS to classical eddy current loss of core material and flux interlinkage factor Kφ. Therefore estimations using these factors may reduced short circuit loss and may improve motor characteristics.

原稿種別: 日本語

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