日本AEM学会誌
Online ISSN : 2187-9257
Print ISSN : 0919-4452
ISSN-L : 0919-4452
特集 第22回MAGDAコンファレンス(MAGDA2013 in 宮崎)
E&Sモデルを用いた電磁鋼板の2次元磁気ひずみモデリング
若林 大輔榎園 正人
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ジャーナル フリー

2014 年 22 巻 2 号 p. 324-330

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 This paper presents a numerical modeling method of two-dimensional magnetostrictions on a non-oriented electrical steel sheet and a grain-oriented electrical steel sheet under alternating and rotating magnetic flux conditions. Non-sinusoidal magnetic flux occurs in a core of electrical machines due to excitation conditions and magnetic anisotropy. Therefore, it is not easy to estimate the magnetostriction under this magnetic flux condition. Principal magnetostrictions of expansion and contraction have been derived from the measured 2-D magnetostriction under sinusoidal magnetic flux conditions. In the suggested modeling method, the principal magnetostrictions have been modeled using the E&S model. Because, coefficients are expressed as waveform, it is possible to model the 2-D magnetostriction on two different kinds of electrical steel sheet. The 2-D magnetostriction under non-sinusoidal magnetic flux condition has been estimated using the suggested modeling. The estimated and measured magnetostriction were in agreement. Thus, the validity of the suggested modeling method was confirmed.

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