Superconducting transformer

Details Superconducting transformer Superconducting transformer

1989-05-30

1992-04-21

Kozma, Thomas J.

Inductor devices

With temperature modifier

Ventilating passages

335216, 336 83, 336 92, 336197, 336DIG1, 505880, H01F 2708, H01F 2730

Patent

active

051072408

ABSTRACT:
A superconducting transformer comprises primary and secondary superconducting coils which are coaxial and made of superconducting wires, and a cryostat for maintaining the superconducting coils in a superconducting state. The cryostat includes a vessel for containing refrigerant and which is formed of a ferromagnetic material. The coils are immersed in the refrigerant. Rod formed of ferromagnetic materials is inserted in the primary and secondary superconducting coils, and is magnetically coupled with the vessel. The cryostat also includes a heat insulating tank for thermally insulating the rod and the vessel from the refrigerant. The rod and the vessel together form a closed magnetic circuit, and function as a core for the superconducting coils.

REFERENCES:
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patent: 2413201 (1946-12-01), Tillman
patent: 3173079 (1965-11-01), McFee
patent: 3273099 (1966-09-01), Minks
patent: 3289137 (1966-11-01), Jones et al.
patent: 4257027 (1981-03-01), Yashuhisa
patent: 4449111 (1984-05-01), Nakajima
patent: 4516559 (1985-05-01), Oohashi
patent: 4616205 (1986-10-01), Praught et al.
patent: 4675637 (1987-06-01), Ferrier et al.
H. Riemersma et al.: "Application of Superconducting Technology to Power Transformers" IEEE Trans. Power Apparatus Syst, PAS-100 No. 7, Jul. 1981.

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