LOSSES IN CABLE-IN-CONDUIT SUPERCONDUCTORS USED FOR THE POLOIDAL COIL SYSTEM OF THE LARGE HELICAL DEVICE

被引：9

作者：

Sumiyoshi, F. ^{[1
]}

Kawabata, S. ^{[1
]}

Kanai, Y. ^{[1
]}

Kawashima, T. ^{[2
]}

Mito, T. ^{[3
]}

Takahata, K. ^{[3
]}

Yamamoto, J. ^{[3
]}

机构：

[1] Kagoshima Univ, Fac Engn, Kagoshima 890, Japan

[2] Fukuoka Inst Technol, Fukuoka 81102, Japan

[3] Natl Inst Fus Sci, Nagoya, Aichi 46401, Japan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1993年 / 3卷 / 01期

关键词：

D O I：

10.1109/77.233465

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：

A NbTi cable-in-conduit conductor encased in a stainless steel jacket is used for the poloidal coil system of the Large Helical Device. This conductor is required to be of high stability, so that it is not allowed to insulate the strands in it and to use CuNi matrix for them in the conductor design. As a result, the inter-strand coupling losses tend to increase during the pulsive operation of the poloidal coil. We measured the loss-frequency characteristics of the short sample conductors with various types of strands in order to clarify their loss properties. The measurement was carried out in the transverse ac ripple field superposed on bias fields, in the frequency range from 0.1 Hz to 200 Hz. Our measuring shows that the replacement of the CuNi-matrix strands in the conductor by the Cu-matrix strands does not much increase the intrinsic coupling loss, but that non-insulation of the strands causes considerably high inter-strand coupling losses.

引用

页码：476 / 479

页数：4

共 5 条

[1] DESIGN STATUS OF SUPERCONDUCTING LARGE HELICAL DEVICE [J].