EXPERIMENTAL EVALUATION OF LONGITUDINAL-FIELD LOSS IN MULTIPLY-TWISTED SUPERCONDUCTING CABLES FOR AC USE

被引：2

作者：

KANETAKA, H ^{[1
]}

UEDA, H ^{[1
]}

EGUCHI, Y ^{[1
]}

IWAKUMA, M ^{[1
]}

FUNAKI, K ^{[1
]}

TAKEO, M ^{[1
]}

YAMAFUJI, K ^{[1
]}

MIYAKE, S ^{[1
]}

KUMANO, T ^{[1
]}

ICHIHARA, M ^{[1
]}

机构：

[1] SHOWA ELECT WIRE & CABLE CO LTD,DEPT SUPERCONDUCTOR RES & DEV,KAWASAKI KU,KAWASAKI,KANAGAWA 210,JAPAN

来源：

CRYOGENICS | 1995年 / 35卷 / 05期

关键词：

LONGITUDINAL FIELD LOSS; MULTIPLY-TWISTED SUPERCONDUCTING CABLES; MULTIFILAMENTARY WIRES; COUPLING-CURRENT LOSS; OPTIMIZATION OF TWIST PITCH;

D O I：

10.1016/0011-2275(95)95352-F

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In multiply-twisted superconducting cables exposed to an external a.c. transverse magnetic field, a component of the magnetic field parallel to the strand axis brings about an additional a.c. loss (longitudinal field loss) in the strands. We have experimentally evaluated the longitudinal field loss in two types of triply-twisted superconducting cables composed of insulated strands with different diameters, by eliminating the hysteresis loss and the transverse coupling-current loss from the total loss in the strands. The evaluated longitudinal field losses were quantitatively explained by a theoretical expression obtained, to date, from consideration of the effects of the longitudinal component of the applied field on the strand. The present results suggest that the longitudinal field loss can be dominant in an a.c. magnetic field with relatively large amplitude. To minimize the total loss of the strand in the multiply-twisted cables, an optimum condition for the twist pitch of the strand was discussed.

引用

页码：327 / 333

页数：7

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