Numerical Study on AC Loss Characteristics of HTS Coils With Various Cross Sections and Methods of AC Loss Reduction
Numerical Study on AC Loss Characteristics of HTS Coils With Various Cross Sections and Methods of AC Loss Reduction
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DOI：
10.1109/tasc.2006.870018
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发表时间：
2006-06
影响因子：
1.8
通讯作者：
S. Fukui;T. Nishijyo;S. Abe;J. Ogawa;M. Yamaguchi;Takao Sato;M. Furuse;H. Tanaka;K. Arai;M. Umeda;T. Takao
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文献类型：
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作者：
S. Fukui;T. Nishijyo;S. Abe;J. Ogawa;M. Yamaguchi;Takao Sato;M. Furuse;H. Tanaka;K. Arai;M. Umeda;T. Takao
对不同截面的Bi 2223/Ag带材绕制的高温超导线圈的交流损耗特性进行了数值研究。计算结果表明，线圈的高宽比越小，高温超导线圈的交流损耗越小。从所需的带长、储能、中心磁场、临界电流以及交流损耗等多方面考虑，认为线圈体积最小的线圈纵横比是较好的形状。数值研究还表明，采用阶梯形截面线圈和匝数渐变线圈，可以实现降低交流损耗的最佳线圈设计
AC loss characteristics of high temperature superconducting coils wound by Bi2223/Ag tape with various cross sections are numerically investigated. The numerical results show that the smaller coil aspect ratio, the smaller AC losses in the HTS coil. It was considered from the numerical results that the coil aspect ratio giving the minimum coil volume is the better shape judging from the many aspects such as the required length of tape, the stored energy, the central magnetic field and the critical current together with the AC loss. It was also shown by the numerical study that the optimal coil design giving the reduced AC loss can be done by employing the stepped cross section coil and the turn number graded coil