Design and testing of a four-pole superconducting motor stator
A four-pole, dc superconducting stator for a novel axial-gap superconducting motor has been designed and fabricated for the Superconducting Motor Research Facility at Oak Ridge National Laboratory. The four solenoidal coils are mounted in a heavy aluminum plate in a square array with alternating polarity. The coils are wound with monolithic multifilamentary NbTi conductor and produce a maximum field at the conductor of 7 T with a current of 2800 A. The windings are immersed in liquid helium (LHe) in a close-fitting rectangular case that surrounds the coil array. A liquid-nitrogen-cooled copper radiation shield and vacuum case insulate the cold mass, which is supported off the top and bottom plates of the vacuum case by four lengths of stainless steel pipe. The stator has been installed in the motor test stand and cooled down to LHe temperatures several times. Currents up to 2000 A have been applied so far with the motor operating at speeds up to 600 rpm and several horsepower, with no evidence of magnet instability. 4 refs., 3 figs., 2 tabs.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5741345
- Report Number(s):
- CONF-910635-2; ON: DE91014275
- Resource Relation:
- Conference: Cryogenic engineering conference and international cryogenic materials conference, Huntsville, AL (USA), 11-14 Jun 1991
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
STATORS
DESIGN
CRYOGENICS
DIMENSIONS
HELIUM
NIOBIUM COMPOUNDS
SUPERCONDUCTING MOTORS
TESTING
TITANIUM COMPOUNDS
ELECTRIC MOTORS
ELEMENTS
FLUIDS
GASES
MOTORS
NONMETALS
RARE GASES
REFRACTORY METAL COMPOUNDS
SUPERCONDUCTING DEVICES
TRANSITION ELEMENT COMPOUNDS
426001* - Engineering- Superconducting Devices & Circuits- (1990-)