Influence of current distribution on conductor performance in coaxial multi-layer HTS conductor

M. Tsuda, A. K.M. Alamgir, Y. Ito, T. Harano, N. Harada, T. Hamajima, M. Ono, H. Takano

Research output: Contribution to journalConference articlepeer-review

15 Citations (Scopus)


We have developed a simulation method based on magnetic flux conservation between two filaments of adjacent layers to estimate current distribution in coaxial multi-layer HTS conductor. Using this method, we have demonstrated homogeneous current distribution and verified that current distribution was controllable directly by the conductor parameters of layer radius, twisting pitch and twisting direction. Although it has been considered that homogeneous current distribution is effective for reducing AC loss, the most suitable conductor parameters and operating condition have not been investigated sufficiently yet. Therefore, we improved our developing method to estimate current distribution more rigorously considering the nonlinear voltage-current characteristic of HTS tape. To verify the validity of the simulation method, we measured current distribution using coaxial two-layer conductors. Agreement of current distribution between the experiment and the analysis was good. It can be considered that our developing estimation method for the more rigorous current distribution is profitable for the investigation of the most suitable conductor parameters and operating condition.

Original languageEnglish
Pages (from-to)1643-1646
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number1
Publication statusPublished - 2002 Mar
Event17th Annual Conference on Magnet Technology - Geneva, Switzerland
Duration: 2001 Sept 242001 Sept 28


  • Coaxial multi-layer conductor
  • Current distribution
  • HTS tape
  • Voltage-current characteristic


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