Electrical machine having an improved cooling system for a rotar

Details Electrical machine having an improved cooling system for a rotar Electrical machine having an improved cooling system for a rotar

1977-11-28

1980-12-09

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

62505, 165 89, H02K 900

Patent

active

042387000

ABSTRACT:
A super-conductive, cryogenically-cooled electrical machine comprises a superconductive exciting winding located in a hollow rotor and a system for cooling the ends of the rotor shaft. The cooling agent is delivered from one end of said shaft to the rotor space through the axial passage of the shaft whose ends are made of at least two coaxial tubes secured together by threading. The cooling agent is removed through the clearances of said thread and such construction of the rotor shaft reduces heat influxes to the superconductive exciting winding at least threefold and lowers the weight-to-power ratio of the machine at least fivefold.

REFERENCES:
patent: 3106334 (1963-10-01), Fogleman
patent: 3679920 (1972-07-01), MacNab
patent: 3745389 (1973-07-01), Lorch
patent: 3781578 (1973-12-01), Smith
patent: 4020642 (1977-05-01), Haselden

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