Current Degradation in Superconducting AC Coils—Causes and Stabilization

  • O. Tsukamoto
  • N. Amemiya
  • I. Hlásnik
Part of the An International Cryogenic Materials Conference Publication book series (ACRE, volume 40)


We are developing technology for high-stability, high-current-capacity AC superconducting windings for 50- or 60-Hz applications. The most serious issue for AC superconducting windings is the AC current-degradation phenomenon: the AC quench currents of the windings are much smaller than the short-sample DC quench current of the winding conductor. Possible causes of the AC current degradation and stabilization methods for those causes were studied. Prospects of attaining large-scale, high-current AC windings are discussed.


Longitudinal Magnetic Field Center Strand Electromagnetic Phenomenon Magnetic Instability Linear Induction Motor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • O. Tsukamoto
    • 1
  • N. Amemiya
    • 1
  • I. Hlásnik
    • 1
  1. 1.Faculty of EngineeringYokohama National UniversityYokohamaJapan

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