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Measurement of AC current distributions in HTS tapes

机译：测量HTS磁带中的交流电流分布

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It is important to evaluate the characteristics of the current distributions in the HTS tapes and conductors in order to realize HTS power devices. In this study, we have developed a simple measurement method to evaluate the current distributions in HTS tapes. In this method, the current distributions are indirectly found from the results of the field distributions measured by an array of precise pickup coils arranged on the upper surface of the sample tape. To confirm the accuracy and sensitivity of this method, Current distributions in a test conductor made of copper wires are measured. Numerical and measured current distributions are compared. and it is found that our method is accurate enough to measure the current distributions in HTS tapes. Using this method, the current distributions in a multifilamentary Ag-alloy sheathed Bi-2223 tape are measured at 77 K. In addition, the effectiveness of our method as detection method of degradation areas of the HTS tapes is examined.
机译：评估HTS带和导体中电流分布的特性对于实现HTS功率器件非常重要。在这项研究中，我们开发了一种简单的测量方法来评估HTS磁带中的电流分布。在这种方法中，电流分布是从由分布在样品带上表面的一组精确拾取线圈测量的场分布结果间接得出的。为了确认此方法的准确性和灵敏性，对由铜线制成的测试导体中的电流分布进行了测量。比较数值和测量的电流分布。并且发现我们的方法足够准确，可以测量HTS磁带中的电流分布。使用此方法，在77 K下测量了多丝Ag合金护套的Bi-2223胶带中的电流分布。此外，还检验了本方法作为HTS胶带降解区域检测方法的有效性。

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