AC LOSSES AND CURRENT DISTRIBUTION IN 40 KA NBTI AND NB3SN CONDUCTORS FOR NET/ITER

被引:21
作者
Ciazynski, D. [1 ]
Turck, B. [1 ]
Duchateau, J. L. [1 ]
Meuris, C. [2 ]
机构
[1] CE Cadarache, Assoc Euratom CEA, F-13108 St Paul Les Durance, France
[2] CEA Saclay, F-91191 Gif Sur Yvette, France
关键词
7;
D O I
10.1109/77.233776
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
General working formulas usable for calculations of AC losses in superconducting multi-stage twisted cables have been developed. In situ contact resistances between subcables of different cabling level as well as AC losses have been measured on full size steel jacketed 40 kA NbTi and Nb3Sn conductors developed for NET/ITER applications. In addition to the strand resistive barriers (CuNi inside NbTi strands and chrome plating for Nb3Sn strands) stainless steel spacers have been used inside these cables to reduce the AC losses. Theory and measurements enable to emphasize the role played by the steel spacers in the reduction of the total AC losses of this kind of conductor. The paper gives also conditions for a good compromise between low AC losses (large transverse resistance) and sufficient current transfer (low transverse resistance) that ensures a correct current distribution among strands.
引用
收藏
页码:594 / 601
页数:8
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