Numerical Analysis of AC Loss Reduction in HTS Superconducting Coils Using Magnetic Materials to Divert Flux

被引：49

作者：

Ainslie, Mark D. ^{[1
]}

Yuan, Weijia ^{[2
]}

Flack, Tim J. ^{[3
]}

机构：

[1] Univ Cambridge, Dept Engn, Bulk Superconduct Grp, Cambridge CB2 1PZ, England

[2] Univ Bath, Dept Elect & Elect Engn, Bath BA2 7AY, Avon, England

[3] Univ Cambridge, Dept Engn, Elect Engn Div, Cambridge CB3 0FA, England

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2013年 / 23卷 / 03期

关键词：

AC loss reduction; high-temperature superconductors (HTSs); superconducting coils; transport ac loss; YBCO COATED CONDUCTORS; RACC;

D O I：

10.1109/TASC.2012.2227639

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, the use of magnetic materials to divert flux in high-temperature superconductor superconducting coils and reduce transport ac loss is investigated. This particular technique is preferred over other techniques, such as striation, Roebel transposition, and twisted wires because it does not require modification to the conductor itself, which can be detrimental to the properties of the superconductor. The technique can also be implemented for existing coils. The analysis is carried out using a coil model based on the H formulation and implemented in comsol multiphysics. Both weakly and strongly magnetic materials are investigated, and it is shown that the use of such materials can divert flux and achieve a reduction in transport ac loss, which, in some cases, is quite significant. This analysis acts to provide a foundation for further optimization and experimental work in the future.

引用

页数：4