Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1980-09-29
1982-12-21
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 61, 310 64, 16510419, H02K 900
Patent
active
043651755
ABSTRACT:
An apparatus is provided for rapidly restarting the flow of coolant through the cold electromagnetic shield of a superconducting rotor following a thermal transient episode. A vortex diode inhibits coolant flow in the undesirable reverse direction and encourages the reestablishment of a normal thermosyphon cooling loop flow quickly following the termination of a thermal transient such as that caused by transmission line faults. The present invention requires no moving parts and may therefore be permanently sealed in the superconducting rotor without risk of costly repair efforts caused by components failure.
REFERENCES:
patent: 3461897 (1969-08-01), Kwok
patent: 3517231 (1970-06-01), Massar
patent: 4085343 (1978-04-01), Hasegawa
patent: 4217171 (1980-08-01), Schaffer
patent: 4236091 (1980-11-01), Kutateladze
patent: 4249575 (1981-02-01), Syred
M. T. Brown, et al.; "Rotor Cooling System for a 10 MVA Superconducting Generator"; MIT Cambridge, Mass.; 1979.
J. A. Schwoerer et al.; "Transient Cooling of a Fault-Worthy Superconducting Electric Generator"; MIT Cambridge, Mass; 1979.
Eckels et al.; "A Helium Cooling System for Large Superconducting A.C. Generators"; ASME, New York, N.Y.; 1978.
Electric Power Research Institute Inc.
Lanyi William D.
Skudy R.
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