Numerical evaluation of AC loss in high temperature superconducting coil
Numerical evaluation of AC loss in high temperature superconducting coil
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DOI：
10.1109/tasc.2004.830027
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发表时间：
2004-08
影响因子：
1.8
通讯作者：
H. Tonsho;M. Toyoda;S. Fukui;M. Yamaguchi;T. Sato;M. Furuse;H. Tanaka;K. Arai;M. Umeda
中科院分区：
文献类型：
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作者：
H. Tonsho;M. Toyoda;S. Fukui;M. Yamaguchi;T. Sato;M. Furuse;H. Tanaka;K. Arai;M. Umeda
提出了一种估算高温超导线圈交流电磁损耗的近似方法。我们用这种方法估算了Bi2223/Ag带材缠绕的饼状线圈堆积而成的高温超导线圈的交流损耗特性。将高温超导线圈的分析交流损耗与国家高级工业科学技术研究所前期工作中测得的环氧树脂浸渍前后的交流损耗进行了比较。分析估计的高温超导线圈的交流电磁损耗比测量的线圈交流损耗要小得多。交流损耗特性不能用本文提出的方法来解释。这种差异的主要原因被认为是高温超导线圈中测量的交流损耗包含了大量的机械交流损耗，即使在高温超导线圈浸渍的情况下，也是由于绕组的交流振动引起的。
An approximated method to estimate the electro-magnetic AC loss in high temperature superconducting coil was proposed. We applied this method to estimate the AC loss characteristics of the high temperature superconducting coil made by stacking pancake coils which are wound by Bi2223/Ag tape. The analytical AC losses of the HTS coil were compared with the measured AC losses before and after impregnation by epoxy resin obtained in the previous work by National Institute of Advanced Industrial Science and Technology. The analytically estimated electro-magnetic AC losses in the HTS coil were much smaller than the measured AC loss of the coil. The AC loss characteristics could not be explained by the method proposed in this paper. The main reason of this discrepancy was considered that the measured AC losses in the HTS coil contained large amount of the mechanical AC loss due to the AC vibration of the winding even if the HTS coil was impregnated.