Concepedia

Low friction in high temperature superconductor bearings

B. R. Weinberger, L. Lynds, J.R. Hull, U. Balachandran

Applied Physics Letters · 1991 · 80 citations · 10 references

DOI

Concepts

Abstract

A study of drag in rotating permanent magnet/high temperature superconductor magnetic bearings is reported. The effects of magnet asymmetry, atmospheric resistance, and eddy currents are discussed. One of the bearings achieved a rotational speed of 200 000 RPM and a low speed coefficient of friction of 8.1×10−6, values that have technological significance for flywheel energy storage.

References

10

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Hysteretic levitation forces in superconducting ceramics

Francis C. Moon, Margaret M. Yanoviak, R. Ware · Applied Physics Letters · 1988 · 214 citations

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P.-Z. Chang, Francis C. Moon, J.R. Hull et al. · Journal of Applied Physics · 1990 · 101 citations

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Dynamic magnetic forces in superconducting ceramics

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Magnetic bearings using high-temperature superconductors: some practical considerations

B. R. Weinberger, L. Lynds, J.R. Hull · Superconductor Science and Technology · 1990 · 88 citations

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