Single and Three-Phase AC Losses in HTS Superconducting Power Transmission Line Prototype Cables

  • D. E. Daney
  • H. J. Boenigl
  • M. P. Maley
  • J. Y. Coulters
  • S. Fleshler
Chapter
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 44)

Abstract

AC losses in two, one-meter-long lengths of HTS prototype multi-strand conductors (PMC’s) are measured with a temperature-difference calorimeter. Both single-phase and three-phase losses are examined with ac currents up to 1000 A rms. The calorimeter, designed specifically for these measurements, has a precision of 1 mW. PMC #1 has two helically-wound, non-insulated layers of HTS tape (19 tapes per layer), each layer wrapped with opposite pitch. PMC #2 is identical except for insulation between the layers. The measured ac losses show no significant effect of interlayer insulation and depend on about the third power of the current -- a result in agreement with the Bean-Norris model adapted to the double-helix configuration. The three-phase losses are a factor of two higher that those exhibited by a single isolated conductor, indicating a significant interaction between phases.

Keywords

Critical Current Axial Magnetic Field Electric Power Research Institute Interlayer Insulation Conductor Spacing 
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.
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Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • D. E. Daney
    • 1
  • H. J. Boenigl
    • 1
  • M. P. Maley
    • 1
  • J. Y. Coulters
    • 1
  • S. Fleshler
    • 2
  1. 1.Los Alamos National LaboratoryLos AlamosUSA
  2. 2.American Superconductor, IncWestboroughUSA

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