An HTS power switch using YBCO thin film controlled by AC magnetic field

An HTS power switch using YBCO thin film controlled by AC magnetic field
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交流磁场控制的YBCO薄膜高温超导功率开关

DOI:
10.1088/1361-6668/ab2d61
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发表时间:
2019
影响因子:
3.6
通讯作者:
Gawith J
Gawith J
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Gawith J

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本文报道了一种快速、高功率密度高温超导开关的设计和实验结果。该开关在蓝宝石衬底上使用YBa2Cu3O7−x薄膜,通过在超导体上施加交流磁场而切换到关断状态,从而使任何传输电流都经历动态电阻。结果表明,10×30 mm厚的薄膜在IC为100A的导通状态和9mΩ的关断状态之间可靠且可重复地切换,关态电压超过100 mV。接通状态到关断状态的转换时间小于1ms,并且关断状态到接通状态的转换时间约为15ms。这些结果为进一步开发用于磁通泵等应用的高功率、快速作用的超导功率开关装置奠定了基础。
This report is on the design of and results from a fast-acting, high power density high temperature superconducting switch. The switch uses thin films of YBa 2 Cu 3 O 7− x on a sapphire substrate switched into the off-state through application of an AC magnetic field to the superconductor, which causes any transport current to experience a dynamic resistance. Results show reliable and repeatable switching of a 10× 30 mm section of thin film between an on-state with Ic of 100 A and an off-state of 9 mΩ, with off-state voltage exceeding 100 mV. On-state to off-state transition time is less than 1 ms and off-state to on-state transition time is around 15 ms. These results are promising for further development of a high power, fast-acting superconducting power switching device for use in applications such as flux pumps.
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