Electromagnetic properties in parallel conductors composed of BI2223 multifilamentary wires for power transformer windings

M. Iwakuma, K. Funaki, H. Shinohara, T. Sadohara, M. Takeo, K. Yamafuji

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We studied theoretically AC losses in superconducting parallel conductors exposed to a transverse alternating magnetic field in relation with transposition among the strands. We obtained an analytical expression of the additional coupling loss for the deviation of transposition from an optimum condition. The AC losses for the alternating external field were measured in parallel conductors composed of B12223 and NbTi multifilamentary wires. The additional losses can be well explained by the theoretical expression in a wide range of the amplitude of external field. We also estimated experimentally current distribution among the strands in a solenoidal coil of the parallel conductor and discussed the effect of transposition on the current distribution.

Original languageEnglish
Pages (from-to)298-301
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume7
Issue number2 PART 1
Publication statusPublished - Dec 1 1997

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Transformer windings
electromagnetic properties
Power transformers
transformers
conductors
wire
Wire
current distribution
strands
alternating current
coils
Magnetic fields
deviation
magnetic fields

All Science Journal Classification (ASJC) codes

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

Cite this

Electromagnetic properties in parallel conductors composed of BI2223 multifilamentary wires for power transformer windings. / Iwakuma, M.; Funaki, K.; Shinohara, H.; Sadohara, T.; Takeo, M.; Yamafuji, K.

In: IEEE Transactions on Applied Superconductivity, Vol. 7, No. 2 PART 1, 01.12.1997, p. 298-301.

Research output: Contribution to journalArticle

Iwakuma, M. ; Funaki, K. ; Shinohara, H. ; Sadohara, T. ; Takeo, M. ; Yamafuji, K. / Electromagnetic properties in parallel conductors composed of BI2223 multifilamentary wires for power transformer windings. In: IEEE Transactions on Applied Superconductivity. 1997 ; Vol. 7, No. 2 PART 1. pp. 298-301.
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