Experimental and theoretical study of AC losses in variable asymmetrical magnetic environments

S. T. Ranecky, H. Watanabe, J. Ogawa, Tetsuo Oka, D. Gölden, L. Alff, Y. A. Genenko

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Measurements of AC losses in a HTS-tape placed in between two bulk magnetic shields of high permeability were performed by applying calorimetric techniques for various asymmetrical shielding arrangements. The experiment was supported by analytical calculations and finite-element simulations of the field and current distributions, based on the Bean model of the critical state. The simulated current and field profiles perfectly reproduce the analytic solutions known for certain shielding geometries. The evaluation of the consequent AC losses exhibits good agreement with measurements for the central position of the tape between the magnets but have increasing discrepancy when the tape is approaching the shields. This can be explained by the increasing contribution of the eddy currents and magnetic hysteresis losses in the conducting shields.

Original languageEnglish
Article number085005
JournalSuperconductor Science and Technology
Volume30
Issue number8
DOIs
Publication statusPublished - 2017 Jul 6
Externally publishedYes

Fingerprint

Tapes
tapes
alternating current
Shielding
shielding
Magnetic hysteresis
current distribution
Eddy currents
eddy currents
Magnets
permeability
magnets
hysteresis
conduction
Geometry
evaluation
profiles
geometry
simulation
Experiments

Keywords

  • AC losses
  • magnetic environments
  • superconductor strip

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

Experimental and theoretical study of AC losses in variable asymmetrical magnetic environments. / Ranecky, S. T.; Watanabe, H.; Ogawa, J.; Oka, Tetsuo; Gölden, D.; Alff, L.; Genenko, Y. A.

In: Superconductor Science and Technology, Vol. 30, No. 8, 085005, 06.07.2017.

Research output: Contribution to journalArticle

Ranecky, S. T. ; Watanabe, H. ; Ogawa, J. ; Oka, Tetsuo ; Gölden, D. ; Alff, L. ; Genenko, Y. A. / Experimental and theoretical study of AC losses in variable asymmetrical magnetic environments. In: Superconductor Science and Technology. 2017 ; Vol. 30, No. 8.
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