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arXiv 1409.2632cond-mat.supr-con
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弯曲超导薄带电缆的Critical state解

Critical state solution of a cable made of curved thin superconducting tapes

Roberto Brambilla, Francesco Grilli

摘要:

本文提出了一种基于临界状态的计算弯曲超导薄带电缆中电流、场分布和交流损耗的方法。该方法还包括考虑临界电流密度的空间变化的可能性,这可能是制造过程的结果。例如,已知稀土基涂覆导体在带的边缘附近具有降低的传输特性:这影响电流和场穿透样品的方式,并因此影响AC损耗。我们表明,弯曲的磁带安排在一个圆柱形的前行为作为一个无限的水平堆叠的直磁带,我们比较在各种工作条件下的交流损耗,无论是没有和临界电流密度的横向依赖。该模型和随后的类似方法可用于涂覆导体的各种应用,包括电力电缆和圆芯导体(CORC)电缆。

英文摘要:

In this paper we develop a method based on the critical state for calculating the current and field distributions and the AC losses in a cable made of curved thin superconducting tapes. The method also includes the possibility of considering spatial variation of the critical current density, which may be the result of the manufacturing process. For example, rare-earth based coated conductors are known to have a decrease of the transport properties in near the edges of the tape: this influences the way current and field penetrate in the sample and, consequently, the AC losses. We demonstrate that curved tapes arranged on a cylindrical former behave as an infinite horizontal stack of straight tapes, and we compare the AC losses in a variety of working conditions, both without and with the lateral dependence of the critical current density. This model and subsequent similar approaches can be of interest for various applications of coated conductors, including power cables and conductor-on-round-core (CORC) cables.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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