Multifilament HTS Cables to Reduce AC Loss: Proof-of-Concept Experiments and Simulation
Multifilament HTS Cables to Reduce AC Loss: Proof-of-Concept Experiments and Simulation
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DOI：
10.1109/tasc.2023.3265436
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发表时间：
2023
影响因子：
1.8
通讯作者：
Tian Lan;Hengpei Liao;M. Iftikhar;W. Yuan;Alexandre Cole;Reda Abdouh;Min Zhang
中科院分区：
文献类型：
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作者：
Tian Lan;Hengpei Liao;M. Iftikhar;W. Yuan;Alexandre Cole;Reda Abdouh;Min Zhang
降低高温超导（HTS）的交流损耗对交流应用至关重要，因为它可以降低对低温冷却需求的限制。一些研究报道了多丝高温超导电缆的制造可以减少交流损耗。然而，由于存在耦合铜层或焊接层，在现有电缆中发现了较大的耦合损耗。本文报道了一种开发多丝高温超导电缆的新方法，主要是通过降低高温超导电缆内部的接触电阻率来抑制耦合损耗。热缩管用于将狭窄的高温超导长丝直接绝缘成电缆结构。样品电缆用4mm和2mm宽的HTS条制成。测量了在旋转磁场中的传输损耗和总交流损耗，以量化多丝高温超导电缆的交流损耗降低。测量结果用于验证建模结果，并预测1mm宽高温超导电缆的交流损耗降低。结果表明，与4mm电缆相比，1mm宽的HTS电缆的损耗降低了约90%。因此，所提出的多丝高温超导电缆在降低交流损耗方面具有广阔的应用前景。
Reducing ac losses of high-temperature superconducting (HTS) is essential for ac application since it can lower the constraint on the cryogenic cooling demand. Several studies have reported that the manufacturing of multifilament HTS cables can reduce ac loss. However, large coupling losses were identified in the existing cables, due to the existence of coupled copper or soldering layers. We report in this article a novel way to develop multifilament HTS cables, mainly focusing on suppressing the coupling losses by reducing the contact resistivity within the HTS cables. Heat shrink tubes are used to directly insulate narrow HTS filaments into a cable structure. Sample cables were made with 4 mm and 2 mm wide HTS strips. Both transport losses and total ac losses in a rotational magnetic field were measured to quantify the ac loss reduction for the multifilament HTS cables. The measurements were used to validate the modeling results, and to predict ac loss reduction for 1 mm wide HTS cable. The results showed loss reduction up to around 90% in the 1 mm wide HTS cable compared with 4 mm cable. As a result, the proposed multifilament HTS cables will have promising applications in reducing ac loss.