Levitation pressure and friction losses in superconducting bearings
Abstract
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:
-
- Downers Grove, IL
- Issue Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- OSTI Identifier:
- 873500
- Patent Number(s):
- 6175175
- Assignee:
- University of Chicago (Chicago, IL)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16C - SHAFTS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Patent
- 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/
Citation Formats
Hull, John R. Levitation pressure and friction losses in superconducting bearings. United States: N. p., 2001.
Web.
Hull, John R. Levitation pressure and friction losses in superconducting bearings. United States.
Hull, John R. Mon .
"Levitation pressure and friction losses in superconducting bearings". United States. https://www.osti.gov/servlets/purl/873500.
@article{osti_873500,
title = {Levitation pressure and friction losses in superconducting bearings},
author = {Hull, John R},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2001},
month = {Mon Jan 01 00:00:00 EST 2001}
}
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Works referenced in this record:
Low rotational drag in high-temperature superconducting bearings
journal, June 1995
- Hull, J. R.; Mulcahy, T. M.; Uherka, K. L.
- IEEE Transactions on Appiled Superconductivity, Vol. 5, Issue 2
A permanent-magnet rotor for a high-temperature superconducting bearing
journal, July 1996
- Mulcahy, T. M.; Hull, J. R.; Uherka, K. L.
- IEEE Transactions on Magnetics, Vol. 32, Issue 4