DocumentCode :
1399663
Title :
Enhancement of the E(J,B) Power Law Characterization for Superconducting Wires from Electrical Measurements on a Coil
Author :
Leclerc, J. ; Berger, K. ; Douine, B. ; Leveque, J.
Author_Institution :
Fac. des Sci. et Technol., Groupe de Rech. en Electrotech. et Electron. de Nancy, Univ. Henri Poincare - Nancy 1, Vandoeuvre-lès-Nancy, France
Volume :
22
Issue :
3
fYear :
2012
fDate :
6/1/2012 12:00:00 AM
Firstpage :
6400504
Lastpage :
6400504
Abstract :
We propose an original method for the characterization of superconducting tapes and wires from electrical measurements on a test coil. The principle is to measure the voltage-current characteristic of a coil for several values of the external applied flux density. A computer program then allows finding parameters of a model of the E(J, B) law that best fit the experimental curves. A numerical study on the algorithm convergence and on the accuracy of results was performed. This method has been employed experimentally to characterize a BiSCCO tape. Parameters of three different models have been obtained and compared. This process has several advantages compared to the conventional measurements on short samples: the voltage to noise ratio is higher and the self flux density of the coil is taken into account. Two models that fits well experimental curves were found.
Keywords :
superconducting coils; superconducting tapes; BiSCCO tape; coil; electrical measurements; power law characterization; superconducting tapes; superconducting wires; voltage-current characteristic; Coils; Density measurement; Mathematical model; Noise; Superconducting magnets; Voltage measurement; Characterization; coil; magnet; superconductors; tape; wire;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2011.2179840
Filename :
6104379
Link To Document :
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