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Alternating current loss in a cylinder with power-law current-voltage characteristic

By D. -X. Chen

Abstract

The transportac loss Q in a superconducting cylinder of radius a with a power-law current-voltage characteristicE=Ec∣J/Jc∣n as a function of current amplitude Im is numerically calculated for a set of given values of a,Jc, and frequency f at n=5, 10, 20, and 30. After deriving a scaling law and defining a critical frequency fc, the results can be converted and interpolated to those for any values of a, Jc, f, and 5 n 30. The “power-law” Q(Im) at f=fc is a better alternative of the critical-state Q(Im), used not only for describing the features of Q(Im,f) of high-temperature superconductors but also for planning Qmeasurements and their interpretation

Topics: High temperature superconductivity, Superconductivity models, Alternating current power transmission, Electrical properties, Critical currents, Transport properties, Creep measurement, Electric measurements, High temperature superjmn conductors
Year: 2005
DOI identifier: 10.1063/1.1947912
OAI identifier: oai:ddd.uab.cat:116310

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