Superconducting bearings with levitation control configurations

Details Superconducting bearings with levitation control configurations Superconducting bearings with levitation control configurations

1991-04-17

1992-05-26

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

505876, H02K 114, F16C 3204

Patent

active

051171392

ABSTRACT:
A superconducting bearing for a rotating member having a magnet at each extremity of the rotating member; having a bearing made of a material exhibiting Type II superconducting properties, the bearing is formed as a recess in the superconducting material in the form of a cylindrical, closed-end orifice. The bearing exerts levitation forces on the magnets at each extremity of the rotating member. Several methods for controlling the levitation forces exerted by the bearing on the magnets at each extremity of the rotating member are shown. One method is to construct the bearing from two different types of superconducting materials. Another method is to provide heating elements in the bearing. A further method is to provide an electromagnetic coil above the bearing. The bearing could also be segmented or have material removed to control the levitation forces.

REFERENCES:
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patent: 4956571 (1990-09-01), Gordon et al.
patent: 4983869 (1991-01-01), Vaidya et al.
patent: 5043615 (1991-08-01), Oshima
patent: 5051637 (1991-09-01), Harris et al.

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