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Title: Levitation pressure and friction losses in superconducting bearings

A superconducting bearing having at least one permanent magnet magnetized with a vertical polarization. The lower or stator portion of the bearing includes an array of high-temperature superconducting elements which are comprised of a plurality of annular rings. An annular ring is located below each permanent magnet and an annular ring is offset horizontally from at least one of the permanent magnets. The rings are composed of individual high-temperature superconducting elements located circumferentially along the ring. By constructing the horizontally-offset high-temperature superconducting ring so that the c-axis is oriented in a radial direction, a higher levitation force can be achieved. Such an orientation will also provide substantially lower rotational drag losses in the bearing.
Inventors:
 [1]
  1. (Downers Grove, IL)
Issue Date:
OSTI Identifier:
873500
Assignee:
University of Chicago (Chicago, IL) ANL
Patent Number(s):
US 6175175
Contract Number:
W-31109-ENG-38
Research Org:
Argonne National Laboratory (ANL), Argonne, IL
Country of Publication:
United States
Language:
English
Subject:
levitation; pressure; friction; losses; superconducting; bearings; bearing; permanent; magnet; magnetized; vertical; polarization; stator; portion; array; high-temperature; elements; comprised; plurality; annular; rings; located; below; offset; horizontally; magnets; composed; individual; circumferentially; constructing; horizontally-offset; c-axis; oriented; radial; direction; force; achieved; orientation; provide; substantially; rotational; drag; radial direction; superconducting element; superconducting bearing; superconducting bearings; located below; levitation force; conducting elements; superconducting elements; permanent magnet; permanent magnets; temperature superconducting; provide substantially; levitation pressure; high-temperature superconducting; elements located; /310/505/