Fabrication of winding model of high-Tc superconducting transformer for railway rolling stock

H. Kamijo, H. Hata, H. Fujimoto, T. Bohno, K. Sakaki, H. Yamada, Masataka Iwakuma, K. Funaki

Research output: Contribution to journalConference articlepeer-review

6 Citations (Scopus)


We fabricated two high-Tc superconducting coils that simulated the winding of a traction transformer for railway rolling stock. The multi-layer solenoid coil to simulate the primary winding of the transformer had five layers with a single Bi2223 superconducting tape. The closed solenoid coil to simulate the secondary winding of the transformer had one layer with eight parallel Bi2223 superconducting tapes. We measured the voltage-current, AC loss and current sharing characteristics of these coils cooled in saturated liquid nitrogen at 77 K. As a result, we concluded that the multi-layer solenoid coil is applicable to the primary winding and the closed solenoid coil is also applicable to the secondary winding.

Original languageEnglish
Pages (from-to)2337-2340
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 II
Publication statusPublished - Jun 1 2003
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: Aug 4 2002Aug 9 2002

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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