Young's Modulus of Windings on Finite Element Method for Natural Frequency Analysis of Stator Core in Induction Motor.

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  • 有限要素法による電動機固定子鉄心の固有振動数解析における巻線の縦弾性係数
  • ユウゲン ヨウソホウ ニ ヨル デンドウキ コテイシ テッシン ノ コユウ シンドウスウ カイセキ ニ オケル マキセン ノ タテ ダンセイ ケイスウ

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Abstract

The offensive electromagnetic noise generates when natural frequencies of a stator core with windings and frame coincide with or are close to frequencies of the magnetomotive forces. So, in order to avoid such noise it is necessary to estimate natural frequencies of the stator core in the design stage. Therefore, we have studied and found a practical method to obtain natural frequencies by using the finite element method (FEM). In this case the most important and unknown constants are Young's moduli of windings which are composed the enameled wires, insulation films and vanish. From experimental investigations the reliable and practical Young's moduli were obtained. We call these moduli as the equivalent Young's modulus for FEM analysis.

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