Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Investigation of I-V characteristics and heat generation of multiply connected HTS conductors in parallel

  • Park, H.C. (Department of Mechanical Engineering, Changwon National University) ;
  • Kim, S. (Department of Mechanical Engineering, Changwon National University) ;
  • Cho, J. (Korea Electrotechnology Research Institute) ;
  • Sohn, M.H. (Korea Electrotechnology Research Institute)
  • Received : 2012.03.27
  • Accepted : 2012.05.11
  • Published : 2012.05.31
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Abstract

With continuous development of the 2nd generation HTS conductor, the critical current of the conductor is also increasing. However, many applications require more than 2 conductors in parallel to transport large current. Applications such as HTS power cables and some HTS current leads usually need much larger transport current than that provided by a single conductor and they require more than several tens of HTS conductors. In the case of parallel connection of multiple HTS conductors, the current distribution depends on the contact resistance of each conductor at the terminals for DC operation. The non-uniform distribution of the terminal resistances results in a non-uniform distribution of the current. The resultant current non-uniformity affects on the measurement of the I-V curve and the thermal performance of the multiple conductors. This paper describes the I-V curves obtained from multiply connected HTS conductors with different terminal contact resistances to investigate the relationship between the distorted I-V curve and heat generation.

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References

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  1. Current Sharing and Redistribution in Superconducting DC Cable vol.23, pp.3, 2013, https://doi.org/10.1109/TASC.2013.2244153