YBACUO CURRENT LEAD FOR LIQUID-HELIUM TEMPERATURE APPLICATIONS

被引：22

作者：

GRIVON, F ^{[1
]}

LERICHE, A ^{[1
]}

COTTEVIEILLE, C ^{[1
]}

KERMARREC, JC ^{[1
]}

PETITBON, A ^{[1
]}

FEVRIER, A ^{[1
]}

LAUMOND, Y ^{[1
]}

机构：

[1] GEC ALSTHOM DEM,F-90018 BELFORT,FRANCE

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1991年 / 27卷 / 02期

关键词：

D O I：

10.1109/20.133560

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：

An electric current is supplied to superconducting devices by means of current carrying leads between the room temperature power source and the superconducting device. Up to now, such current leads have been made of copper conductors in rod or pipe form. For an optimized copper current lead between 300 K and 4.2 K, losses at room temperature are about 3 kW per kA. Use of superconducting ceramic between 77 K and 4.2 K would decrease the heat conduction and eliminate ohmic losses. Consequently, we studied the losses of a double current lead (copper from 300 K to 77 K and YBaCuO from 77 K to 4.2 K). In this paper we give the main results obtained: [GRAPHICS] on the electrical contact resistance between YBaCuO and metal on the transport critical current density and 50 Hz losses of sintered tubes and textured material on a 1 kA double DC current lead. On the basis of these results, it seems possible to decrease the current lead losses by a factor of five.

引用

页码：1866 / 1869

页数：4

共 11 条

[1] ELECTROMAGNETIC PROPERTIES OF SINTERED YBACUO SUPERCONDUCTORS - CRITICAL CURRENT DENSITIES, TRANSPORT CURRENTS AND AC LOSSES [J].