モータ積層鉄心の性能に及ぼす層間短絡の影響

DOI Web Site Web Site 被引用文献12件 参考文献9件
  • 開道 力
    新日本製鐵(株)技術開発本部鉄鋼研究所鋼材第一研究部
  • 茂木 尚
    新日本製鐵(株)技術開発本部鉄鋼研究所鋼材第一研究部
  • 半澤 和文
    新日本製鐵(株)八幡製鐵所電磁鋼板工場

書誌事項

タイトル別名
  • The Effect of Short Circuit between Laminated Steel Sheets on the Performance of Lamination Core of Motor
  • モータ セキソウ テッシン ノ セイノウ ニ オヨボス ソウ カン タンラク ノ エイキョウ

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説明

The effects of short circuits between laminated steels in lamination cores, caused by clinching or welding, are discussed in this paper. A short circuit between laminated steels increase a core loss. A short-circuit resistance r1due to clinching is more affected by contact resistance than by the electrical resistivity of core material and it is inversely as the third order of the thickness of core material. In the case of welding, r1 is influenced by the resistivity of core material and it is inversely as the second order of core material thickness, if the width and depth of welding, such as laser welding, are proportional to the thickness. The short-circuit resistance of welding is generally smaller than that of clinching, and then the short-circuit loss caused by welded core will be larger than that by clinching. According to theoretical calculation, the short-circuit losses are possibly larger than iron losses due to core materials in actual cores and more than two times in the case of segment motor cores, because the number of clinch-ing or welding is large. As the method to reduce the short-circuit losses or to avoid the short circuits, it is necessary to use thin electrical steel sheets with high electrical resistivity as core materials, or to fix laminated steels by means of adhesion or molding.

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