The scaling of transport AC losses in Roebel cables with varying strand parameters

被引:20
作者
Jiang, Zhenan [1 ]
Staines, Mike [1 ]
Long, Nicholas J. [1 ]
Badcock, Rodney A. [1 ]
Bumby, Chris [1 ]
Talantsev, Evgeny [1 ]
Hamilton, Kent [1 ]
Buckley, Robert G. [1 ]
Amemiya, Naoyuki [2 ]
机构
[1] Victoria Univ Wellington, Robinson Res Inst, Lower Hutt 5046, New Zealand
[2] Kyoto Univ, Grad Sch Engn, Dept Elect Engn, Nishikyo Ku, Kyoto 6158510, Japan
关键词
transport AC loss; coated conductor; Roebel cable; CONDUCTORS; FIELD;
D O I
10.1088/0953-2048/27/7/075007
中图分类号
O59 [应用物理学];
学科分类号
摘要
A Roebel cable is a good candidate for low-voltage windings in a high-temperature superconductor (HTS) transformer because of its high current-carrying capability and low AC loss. Transport AC loss measurements were carried out in 1.8 m long 15/5 (fifteen 5 mm wide strands) and 15/4 Roebel cables. The results were compared with those in many Roebel cables composed of 2 mm wide Roebel strands. Comparison of the AC losses hinted that the intrinsic difference in normalized transport AC losses is due to differences in the g/w (ratio of the horizontal gap between the Roebel strands over the Roebel strand width) values. The intrinsic difference was confirmed by measuring transport AC loss in a series of horizontally arranged parallel conductor pairs with various g values. A method to scale transport AC losses in Roebel cables with varying strand parameters was developed. The scaling method will be useful for a rough assessment of AC loss in one-layer solenoid winding coils, such as in a HTS transformer.
引用
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页数:11
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