Current Degradation in Superconducting AC Coils—Causes and Stabilization
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.
KeywordsLongitudinal Magnetic Field Center Strand Electromagnetic Phenomenon Magnetic Instability Linear Induction Motor
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