European intercomparison of measurements of rotational power loss in electrical sheet steel
European intercomparison of measurements of rotational power loss in electrical sheet steel
复制标题
欧洲电工钢板旋转功率损耗测量值的比较
DOI：
10.1016/0304-8853(96)00129-1
复制
发表时间：
1996
影响因子：
2.7
通讯作者：
A. Rietto
中科院分区：
文献类型：
--
作者：
J. Sievert;H. Ahlers;M. Birkfeld;B. Cornut;F. Fiorillo;K. Hempel;T. Kochmann;A. Kedous;T. Meydan;A. Moses;A. Rietto
本文介绍了欧洲电工钢板在旋转和交流磁通条件下的磁性能，主要是功率损耗的测量结果。在后一种情况下，考虑了样品平面内通量的不同方向。此次演习包括两个等级的颗粒取向材料和六个等级的非取向材料。六个参与的实验室采用了不同但部分相似的测量方法。对于无取向(NO)材料，结果相当吻合。对于颗粒取向材料，结果有很大不同。这主要是由于各向异性引起的微分位相角起伏较大、样品的测量面积相对于晶粒度较小以及不完全的磁通矢量控制所致。这种情况似乎需要进一步调查，然后才能定义标准。
This paper presents the results of a European intercomparison of measurements of the magnetic properties, mainly the power loss, of electrical sheet steel under the conditions of rotating and alternating flux. In the latter case, different directions of the flux in the sample's plane were considered. Two grades of grain-oriented and six grades of non-oriented material were included in the exercise. The six participating laboratories applied different, but partly similar, measurement methods. With non-oriented (NO) materials, the results are in fairly good agreement. For grain-oriented materials the results differ considerably. This can be explained by the large fluctuations of the differential phase angle due to anisotropy, a small measurement area of the sample compared with grain size, and incomplete flux-vector control. The situation appears to require further investigations before a standard can be defined.