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首页> 外文期刊>IEEE Transactions on Magnetics >3-D MACC Modeling of Instantaneous Magnetic Flux Distributions in Epstein Tester
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3-D MACC Modeling of Instantaneous Magnetic Flux Distributions in Epstein Tester

机译：综合磁通量分布的3-D MACC建模

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摘要

Magnetic energy losses of silicon iron (SiFe) sheets are determined by the standardized methods of single sheet tester (SST) or Epstein tester (ET). The ET is much more compact and can be applied in a large range of frequency. However, it suffers from several sources of systematic errors. The most severe one is given by the magnetic cores flux distribution that shows a strong degree of inhomogeneity. This fact is highly evident. However, it never has been investigated in detail so far. Herein, we report results of a 3-D modeling, performed by magnetic anisotropic circuit calculation (MACC), considering non-linearity in connection with anisotropy, for both non-oriented (NO) steel and grain-oriented (GO) steel. The results reveal substantial differences of the corresponding flux distributions. NO steel proves to be characterized by high homogeneity of induction in rolling direction in the middle sections of the four limbs. However, the four corners show strong inhomogeneity in instants of low global induction, while a transition to more balanced flux arises at peak magnetization. On the other hand, this transition is much less pronounced for GO steel. As a conclusion for the evaluation of losses, a distinction is needed for the two different types of material.
机译：硅铁（SIFE）片材的磁能损失由单张纸测试仪（SST）或Epstein测试仪（ET）的标准化方法确定。 ET更紧凑，可在大量频率范围内应用。然而，它遭受了若干系统错误的来源。最严重的是由磁性核心通量分布给出，显示出强烈的不均匀性程度。这一事实非常明显。然而，到目前为止，它从未详细调查过。这里，我们报告通过磁各向异性电路计算（MACC）进行的3-D模型的结果，考虑与各向异性有关的非线性，对于非导向（NO）钢和晶粒化（GO）钢。结果揭示了相应的助焊剂分布的大量差异。在四肢中间部分中滚动方向的均匀均匀，没有钢的特征在于。然而，四个角落在低全球诱导的瞬间显示出强烈的不均匀性，而在峰值磁化下会出现对更平衡的通量的过渡。另一方面，这种过渡对于Go Steel不太明显。作为评价损失的结论，两种不同类型的材料需要区分。

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