Influence of Stochastic Contact Resistances on Coupling Losses

  • E. M. J. Niessen
  • R. M. J. van Damme
Part of the An International Cryogenic Materials Conference Publication book series (ACRE, volume 40)

Abstract

In this paper the influence of stochastic contact resistances on coupling losses in cables is determined. The model consists of two parallel strands making contact with each other at several positions. The parallel resistances in the strands are constant. The interstrand contacts can have stochastic values. As time dependent electromagnetic fields induce currents, heat dissipation arizes. The dissipation due to the currents between the strands, defined as coupling losses, is investigated for constant contact resistances as well as for stochastic values. From the analysis, both analytical and numerical, it follows that, for spatially dependent time varying applied magnetic fields, the coupling losses increase when the parallel resistances decrease. Furthermore, it is shown that for smaller contact resistances the relative influence of the stochastic nature of the contact resistances on the coupling losses increases.

Keywords

Contact Resistance Inverse Fourier Transform Stochastic Nature Loss Term Stochastic Average 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    E.M.J. Niessen, D. ter Avest and L.J.M. van de Klundert, Application of the network method to superconducting cables, Proceedings LTEC90, pp. 5. 4 (1990).Google Scholar
  2. 2.
    P.J. Davis, “Circulant Matrices”, John Wiley, New York (1979).Google Scholar
  3. 3.
    E.M.J. Niessen and R.M.J. van Damme, Influence of stochastic contact resistance on coupling losses, Memorandum No. 1067, University of Twente, The Netherlands, ISSN 0169–2690 (1992).Google Scholar
  4. 4.
    E.M.J. Niessen, Continuum Electromagnetics of Composite Superconductors, Ph.D. thesis, University of Twente, The Netherlands (1993).Google Scholar

Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • E. M. J. Niessen
    • 1
  • R. M. J. van Damme
    • 1
  1. 1.Department of Applied MathematicsUniversity of TwenteThe Netherlands

Personalised recommendations