Reduction of alternating current loss in a high-TC superconducting transmission cable by means of helical pitch adjustment

Noji, H.; Ooyama, S.; Nakajima, Kyo

doi:10.1016/j.cryogenics.2003.08.007

Cited by 10 publications

(1 citation statement)

References 16 publications

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“…In the case of power cables with multilayer structures, the Bi2223 tapes are mainly exposed to an AC parallel transverse field with various field amplitudes depending on the layer positions [2,3]. Up to now, several experimental and theoretical studies for total AC loss characteristics in an AC transverse field have been reported on Bi2223 multifilamentary tapes prepared by a conventional powderin-tube (PIT) process [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Total AC loss of Ag-sheathed Bi2223 tapes with various filament arrangements carrying AC transport current in AC parallel transverse magnetic field

Inada

Tateyama

Nakamura

et al. 2007

Supercond. Sci. Technol.

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For the applications of Bi2223 tapes as the strands to power cables with multilayer structures, the tapes must carry the AC transport current in an AC parallel transverse field with various field amplitudes depending on the layer positions. In this study, we experimentally investigated the total AC loss characteristics under parallel transverse field for Bi2223 tapes with various filament arrangements in their cross sections. The tapes with different filament arrangements in the final tape sections were prepared by a conventional powder-in-tube (PIT) process with drawing using round dies and a rectangular deformation process using a two-axial rolling (TAR) technique. Total AC losses in the tapes carrying AC transport current in an AC parallel transverse field were measured by means of the electromagnetic method. The measured loss values in the tapes were compared with several analytical models. Based on the experimental results, the influence of filament arrangements on total AC loss behaviour is discussed, under the different operating conditions with various amplitudes of current and applied field.

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