高温超导长带材临界电流测试的带材保护

Protection for long high-temperature superconducting tapes during critical current test

在高温超导长带材临界电流测试中,超导带材常因测试电流及接触电阻所产生的高温而损坏。通过实验及计算,得到测试中超导带材所能承受的最大损耗功率Pc,以及测试电路所允许的最大接触电阻Rcon。并根据最大损耗功率Pc及最大允许接触电阻Rcon,提出了一种有效的带材保护方案。具体保护方案、实验数据及计算结果均展示于论文中。

The high - temperature superconducting （HTS） tapes are often damaged by the enormous heat caused by the large current and contact resistance during the critical current test. For the reason given above, the maximum endurable dissipa- ted power Pc of the HTS tapes in the testing procedure and the maximum permissible contact resistance of the circuit Rcom were ob- tained by experiments and relevant calculations. Based on the values of Pc and Rcom,an effective protection was proposed. The protection, as well as the relevant experiment data and calculations, were demonstrated in the paper.