Superconductive coil assembly particularly for a current limiter

Details Superconductive coil assembly particularly for a current limiter Superconductive coil assembly particularly for a current limiter

1993-11-04

1995-02-07

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Superconductive type

336DIG1, 361 19, 361141, 323360, 338 32S, H01F 100, H01F 3600, H02H 700, H01H 4700

Patent

active

053878906

ABSTRACT:
The present invention relates to a superconductive coil assembly which may be used particularly for a current limiter, the coil assembly comprising a plurality of coaxial cylindrical coils electrically connected in series, each coil comprising two windings of superconductive material electrically connected in parallel, arranged coaxially and wound in opposite directions, wherein in each coil, the windings are separated by a material which has a surface resistance in the radial direction lying in the range 10.sup.-5 .OMEGA..m.sup.2 to 10.sup.-2 .OMEGA..m.sup.2 at the temperature of the cryostat, and in which the strands which constitute the superconductive wires may themselves be covered with a layer of the same material.

REFERENCES:
patent: 3527873 (1970-09-01), Brechna
patent: 4760365 (1988-07-01), Bailey et al.
patent: 4910626 (1990-03-01), Collet
patent: 5153804 (1992-10-01), Pham
patent: 5168125 (1992-12-01), Verhaege
patent: 5204650 (1993-04-01), Nemoto
patent: 5225957 (1993-07-01), Tsurunaga
patent: 5250508 (1993-10-01), Pham
Journal of Materials Science, No. 26, Jan. 1991, London, Great Britain, pp. 145-154, Shrout et al: "Composite PCTR thermistors utilizing conducting borides, silicides, and carbide powders".

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