Hysteresis losses in hollow superconductors

J.A. Eikelboom, R.A. Hartmann, L.J.M. van de Klundert

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Abstract

Flux penetration into a hollow superconducting filament in a time-varying transverse magnetic field is determined numerically. The magnetization of the filaments is calculated for field variations below and above the penetration field of the filament. The influence of the inner radius of the superconducting filament on the magnetization and the hysteresis losses in the filament is shown. The critical current density is taken to be constant during the external field cycle and depends within the superconducting filament on the local magnetic field, which is the sum of the externally applied field and the field induced by the local screening currents. Calculations based on the theory presented here show good agreement with experimental results.
Original languageEnglish
Pages (from-to)1968-1971
Number of pages4
JournalIEEE transactions on magnetics
Volume25
Issue number2
DOIs
Publication statusPublished - 1989

Keywords

  • Penetration field
  • Flux penetration
  • Field variations
  • Time-varying transverse magnetic field
  • Local magnetic field
  • Hysteresis losses
  • Hollow superconducting filament
  • Magnetization
  • Critical current density
  • Local screening currents

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    Eikelboom, J. A., Hartmann, R. A., & van de Klundert, L. J. M. (1989). Hysteresis losses in hollow superconductors. IEEE transactions on magnetics, 25(2), 1968-1971. https://doi.org/10.1109/20.92694