Alternating current loss of second-generation high-temperature superconducting coils with magnetic and non-magnetic substrate
Alternating current loss of second-generation high-temperature superconducting coils with magnetic and non-magnetic substrate
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DOI：
10.1063/1.4749275
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发表时间：
2012-09
影响因子：
4
通讯作者：
M. Zhang;J. Kvitkovic;Jae-ho Kim;C. Kim;S. Pamidi;T. Coombs
中科院分区：
文献类型：
--
作者：
M. Zhang;J. Kvitkovic;Jae-ho Kim;C. Kim;S. Pamidi;T. Coombs
第二代高温超导带材中磁性衬底的输运损耗比非磁性衬底的高。为了测试这一点，我们准备了两个相同的线圈与磁性和非磁性基板，分别。实验结果相当令人惊讶，它们产生的传输损失量大致相同。我们使用有限元方法来理解这个结果。据发现，与磁场依赖的临界电流特性可以忽略不计的单一磁带和磁性基板的影响占主导地位，磁场依赖的临界电流特性的2G磁带中起着同样重要的作用，作为磁性基板的高温超导线圈。
It is widely believed that the second-generation high-temperature superconducting (2G HTS) tapes with magnetic substrates suffer higher transport loss compared to those with non-magnetic substrates. To test this, we prepared two identical coils with magnetic and non-magnetic substrates, respectively. The experimental result was rather surprising that they generated roughly the same amount of transport loss. We used finite element method to understand this result. It is found that, unlike in the single tape where the magnetic field-dependent critical current characteristic can be neglected and the effect of magnetic substrate dominates, the magnetic field-dependent critical current characteristic of 2G tape plays as an equally important role as magnetic substrate in terms of HTS coils.