Current distributions and AC losses in self-fields for superconductor tapes and cables
Current distributions and AC losses in self-fields for superconductor tapes and cables
复制标题
超导带和电缆自场中的电流分布和交流损耗
DOI：
10.1109/77.783479
复制
发表时间：
1999
影响因子：
1.8
通讯作者：
A. Oota
中科院分区：
文献类型：
--
作者：
T. Fukunaga;R. Inada;A. Oota
利用数值计算研究了超导带材在自场中的交流损耗。在计算中，以电流幅值为参数，计算了具有任意截面几何形状的直超导材料的电流分布和自场损耗。对于7芯丝超导带材，损耗取决于丝材的配置，这在7芯丝样品的实验中也能观察到。对于电缆而言，损耗值受带材排列的强烈影响。由许多相似带材组成的不同电缆，其损耗各不相同。这些结果表明，优化带材和电缆结构，即电缆中超导芯的排列，有助于减少电缆中的损耗产生。
The alternating current losses in self-fields for superconductor tapes are investigated using numerical calculations. In the calculation, the current distributions and self-field losses for straight superconductors with the arbitrary sectional geometry are calculated as a parameter of current amplitude. For the 7-filamentary tapes, the losses depend on the filament configurations, which is also observed experimentally in the 7-filaments samples. In the case of cables, the values of the losses are strongly influenced by the tape arrangements. The losses for altered cables, which are composed of a number of similar tapes, are different from each other. These results suggest that the optimization of tape and cable structure, i.e. the arrangement of the superconductor cores in the cables, is useful to reduce the loss generation in the cables.