Superconducting rotor

Details Superconducting rotor Superconducting rotor

1993-09-15

1996-01-09

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 64, 62 6, 505878, H02K 900, H02K 922, F25B 900

Patent

active

054829194

ABSTRACT:
The superconducting rotor includes at least one field coil made of a superconductor material having a given superconducting transition temperature. A cryocooler system is mounted for rotation with the rotor. The cryocooler includes a cold head portion mounted in heat transfer relation with the field coil to cool the field coil to a temperature below its transition temperature and includes a piston/regenerator adapted to allow passage of a working fluid at a mass flow rate which is substantially uniform over the cross-section of the piston/regenerator during operation of the system. Heat is conducted away from the field coils by heat pipes or by conduction through high thermally conductive material. Mounting the cryocooler cold head for rotation with the rotor eliminates the use of a cryogenic liquid pool for rotor cooling.

REFERENCES:
patent: 3534813 (1970-10-01), Fleming
patent: 3692099 (1972-09-01), Nesbitt et al.
patent: 4079273 (1978-03-01), Lambrecht et al.
patent: 4209061 (1980-06-01), Schwemin
patent: 4223239 (1980-09-01), Eckels
patent: 4642495 (1987-02-01), Mori et al.
patent: 4727724 (1988-03-01), Intichar et al.
patent: 4843826 (1989-07-01), Malaker
patent: 4901787 (1990-02-01), Zornes
patent: 5032748 (1991-07-01), Sakuraba et al.
patent: 5090206 (1992-02-01), Strasser

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