Synchronous machine having superconductive stator and rotor wind

Details Synchronous machine having superconductive stator and rotor wind Synchronous machine having superconductive stator and rotor wind

1988-06-14

1989-03-28

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 64, H02K 900

Patent

active

048167088

ABSTRACT:
A synchronous machine having a rotor fixed to a shaft carried by bearings (23), and having stator and rotor windings (1,2) which are superconducting and which are cooled by very low temperature helium, with each of the windings and the gap (5) therebetween being located in vacuum enclosure, the synchronous machine including the improvement whereby the stator windings are cooled by a bath of liquid helium (12), whereby the rotor windings are cooled by a flow of helium above its critical pressure (14, 15, 16), and whereby said flow of helium above its critical pressure and said liquid helium bath constitute parts of a circuit for cooling helium which is initially under high pressure, which is expanded (8) to a pressure slightly above its critical pressure, which is cooled in a heat exchanger (10) disposed in the liquid helium bath, which is heated by contact with the rotor windings, which is then liquified by further expansion (18), and which finally returned to the liquid helium bath (12).

REFERENCES:
patent: 3242418 (1966-03-01), Mela
patent: 3781578 (1973-12-01), Smith, Jr.
patent: 3816780 (1974-06-01), Smith, Jr.
patent: 3940643 (1976-02-01), Sika
patent: 4101793 (1978-07-01), Berthet
patent: 4176291 (1979-11-01), Rabinowitz
patent: 4236091 (1980-11-01), Kutateladze
patent: 4289985 (1981-09-01), Popov
patent: 4309632 (1982-01-01), Muller
patent: 4365479 (1982-12-01), Weghaupt
patent: 4426592 (1984-01-01), Berzin
patent: 4578962 (1986-04-01), Dustmann

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