The effect of an alternating magnetic field on the stability of hard levitation of high-temperature superconductors

Smolyak, B. M.; Babanov, M.V.; Ermakov, G. V.; Postrekhin, E.V.; Shou, L.W.; Smolyak, I. B.; Наумов, С. В.

doi:10.1016/s0921-5107(97)00323-1

Cited by 1 publication

(2 citation statements)

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“…A drift in levitation height under either a variable magnetic field or a vibration has been studied by several researchers [147][148][149][150][151][152][153][154]. Such a drift is in addition to any possible change in levitation height due to force creep.…”

Section: Bearing Dynamicsmentioning

confidence: 99%

“…Such a drift is in addition to any possible change in levitation height due to force creep. The drift in levitation height can be made so severe that levitation is totally lost [152][153][154], but these extreme cases can usually be avoided by proper bearing design. In the many experiments performed in the author's laboratory, some rotors have experienced a drop in levitation height of several hundred micrometres immediately after passing through the resonance, but after operation at higher speeds this gap is usually recovered.…”

Section: Bearing Dynamicsmentioning

confidence: 99%

See 1 more Smart Citation

Superconducting bearings

Hull

2000

Supercond. Sci. Technol.

468

203

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The physics and technology of superconducting bearings is reviewed. Particular attention is given to the use of high-temperature superconductors (HTSs) in rotating bearings. The basic phenomenology of levitational forces is presented, followed by a brief discussion of the theoretical models that can be used for conceptual understanding and calculations. The merits of various HTS bearing designs are presented, and the behaviour of HTS bearings in typical situations is discussed. The article concludes with a brief survey of various proposed applications for HTS bearings.

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