Meissner motor using high-Tc ceramic superconductors
The authors developed a brand new superconducting motor using high-Tc ceramic superconductors for the first time. This motor utilizes the repulsive force caused by the Meissner effect, which appears below Tc and disappears above that, and is therefore referred to as the Meissner Motor. The motor rotated at a maximum speed of 40 rpm. Though the repulsive force to drive the motor increased with the decrease of temperature or the increase of the gradient magnetic field, it was only about 1.1 gf/g at 77 K in 3500 G/cm. The motor has a maximum torque of 5.0 gf-cm theoretically, but actually had a torque below 0.66 gf-cm, because it took some time to be cooled below Tc. The rotating speed of the motor was limited by heating ability and its torque was limited by cooling ability.
- Research Organization:
- 9305050
- OSTI ID:
- 5886191
- Report Number(s):
- CONF-880812-; TRN: 89-018601
- Journal Information:
- IEEE Trans. Magn.; (United States), Vol. 25:2; Conference: Applied superconductivity conference, San Francisco, CA, USA, 21-25 Aug 1988
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CERAMICS
SUPERCONDUCTIVITY
SUPERCONDUCTING MOTORS
DESIGN
COOLING
MAGNETIC FIELDS
MEISSNER-OCHSENFELD EFFECT
THEORETICAL DATA
TORQUE
TRANSITION TEMPERATURE
DATA
ELECTRIC CONDUCTIVITY
ELECTRIC MOTORS
ELECTRICAL PROPERTIES
INFORMATION
MOTORS
NUMERICAL DATA
PHYSICAL PROPERTIES
SUPERCONDUCTING DEVICES
THERMODYNAMIC PROPERTIES
420201* - Engineering- Cryogenic Equipment & Devices
360204 - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity