AC Loss Characteristics in REBCO Coil Assemblies With Different Geometries and Conductors

被引：15
作者：
Sogabe, Yusuke [1 ,2 ]
Jiang, Zhenan [3 ]
Wimbush, Stuart C. [3 ]
Strickland, Nicholas M. [3 ]
Staines, Mike [3 ]
Long, Nicholas J. [3 ]
Amemiya, Naoyuki [1 ]
机构：
[1] Kyoto Univ, Grad Sch Engn, Kyoto 6158510, Japan
[2] Japan Soc Promot Sci, Tokyo 1020083, Japan
[3] Victoria Univ Wellington, Robinson Res Inst, Wellington 5010, New Zealand
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2018年 / 28卷 / 03期
关键词：
AC loss; electromagnetic field analysis; REBCO coil assembly; YBCO-COATED CONDUCTOR;
D O I：
10.1109/TASC.2017.2783368
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：
We have been seeking effective ways to reduce ac losses in REBCO coil assemblies. The ac loss characteristics of assemblies of REBCOdouble-pancake coils (DPCs) are influenced by the magnetic interactions between coils as well as the electric field (E)-current density (J) characteristics of REBCO coated conductors. We compared the ac loss characteristics of two assemblies of DPCs obtained by electromagnetic field analysis and experiment: one consisting of two DPCs and another consisting of six DPCs. Prior to the electromagnetic field analyses, we measured the current transport properties of the coated conductors and formulated their E-J characteristics. In the assembly of six DPCs, ac loss concentrates in the end PCs. In order to reduce the ac loss there, we replaced the end DPCs with ones wound with coated conductors with higher critical currents. However, the conductor replacing is not effective so much to reduce the ac loss because of magnetic interactions between DPCs.
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页数：5
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