AC loss measurement and simulation of a coated conductor pancake coil with ferromagnetic parts
AC loss measurement and simulation of a coated conductor pancake coil with ferromagnetic parts
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DOI：
10.1088/0953-2048/22/7/075007
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发表时间：
2009-07
影响因子：
3.6
通讯作者：
E. Pardo;J. Šouc;M. Vojenčiak
中科院分区：
文献类型：
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作者：
E. Pardo;J. Šouc;M. Vojenčiak
磁转向器通常用于减少超导线圈中的交流损耗。然而，它们尚未被证明适用于YBa2Cu3O7− x涂层的导体线圈。此外，需要建模工具来预测所产生的AC损耗并理解损耗机制。本文对一种带铁磁分流器的涂敷导体饼形线圈进行了测量和仿真。磁分流器降低了交流损耗，但临界电流实际上没有改变。我们的模拟结果表明，一个分流器比在测量中可以减少低于一个单一的条的损失。因此，最佳分流器尺寸应通过模拟获得。
Magnetic diverters are commonly used in order to reduce the AC loss in superconducting coils. However, they have not been proved to work on YBa2Cu3O7−x-coated conductor coils. Moreover, modeling tools are required for predicting the resulting AC loss and understanding the loss mechanisms. In this paper, a coated conductor pancake coil with ferromagnetic diverter is measured and simulated. The magnetic diverter reduces the AC loss but the critical current practically does not change. Our simulations show that a diverter wider than that in the measurements can reduce the loss below that of a single strip. Therefore, the optimum diverter size should be obtained by simulations.