Article (Scientific journals)
Semi-analytical study of AC losses in an infinitely long superconducting cylinder surrounded by a metallic sheath: magnetic field dependent critical current density and generation of harmonics
Kirsch, Sébastien; Fagnard, Jean-François; Vanderbemden, Philippe et al.
2013In Superconductor Science and Technology, 26, p. 115001
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Keywords :
Critical currents; Transport properties; Magnetic properties; Metal; bulk Superconductor
Abstract :
[en] We study the AC losses in an infinitely long cylinder made of a superconducting core surrounded by a non-magnetic metallic sheath and subjected to an axial magnetic field. The losses are computed by assuming the Bean–Kim model for the superconductor and Ohmic dissipation for the metal. The time varying magnetic flux crossing the superconductor induces eddy currents in the metal sheath and, due to the nonlinear response of the superconducting material, generates harmonics in the metal current density. In turn, these currents generate distorted magnetic fields acting back on the superconductor. This coupling mechanism is sensitive to the magnetic constitutive law of the superconductor and affects both the waveform of the fields and the total losses. In this paper, we study the importance of the harmonics in the metal on the total losses, as well as their sensitivity to a field dependent critical current density following Kim's law.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Kirsch, Sébastien ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Electronique et microsystèmes
Fagnard, Jean-François  ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques
Vanderbemden, Philippe  ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques
Vanderheyden, Benoît  ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Electronique et microsystèmes
Language :
English
Title :
Semi-analytical study of AC losses in an infinitely long superconducting cylinder surrounded by a metallic sheath: magnetic field dependent critical current density and generation of harmonics
Publication date :
30 September 2013
Journal title :
Superconductor Science and Technology
ISSN :
0953-2048
eISSN :
1361-6668
Publisher :
Institute of Physics, Bristol, United Kingdom
Volume :
26
Pages :
115001
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
FWB - Fédération Wallonie-Bruxelles [BE]
Available on ORBi :
since 22 July 2014

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