Superconducting strand for alternating current

Details Superconducting strand for alternating current Superconducting strand for alternating current

1991-03-13

1992-12-15

Nimmo, Morris H.

Electricity: conductors and insulators

Conduits, cables or conductors

Superconductors

1741281, 174130, 174131R, H01B 1200

Patent

active

051719410

ABSTRACT:
There is provided a superconducting strand for alternating current which is formed by stranding 13 or more superconducting wires having a diameter smaller than that of a non-magnetic core member in a single-layered form on the outer peripheral surface of the core member and which can efficiently remove heat caused by AC loss, avoid a quenching phenomenon and stably maintain the superconducting state. Preferably, an electrically insulataive braided layer formed of polyester fiber is interposed between the core member and the stranded superconducting wires and stable insulation can be maintained therebetween, thereby preventing flow of coupling current caused by defective insulation and suppressing partial heat generation. The superconducting wire contains a large number of NbTi superconducting filaments and a non-magnetic stainless steel wire can be preferably used for the core member.

REFERENCES:
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patent: 3657466 (1972-04-01), Woolcock et al.
patent: 3699647 (1972-10-01), Bidault et al.
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patent: 4169964 (1979-10-01), Horvath et al.
patent: 4501062 (1985-02-01), Hillmann et al.
patent: 4652697 (1987-03-01), Ando et al.
patent: 4723355 (1988-02-01), Both et al.
patent: 4743713 (1988-05-01), Scanlan
patent: 4857675 (1989-08-01), Marancik et al.

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