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Influence of Lateral Critical Current Density Distributions on AC Transport Losses for Ag-Sheathed (Bi, Pb)-2223 Multifilamentary Tapes with Different Filament Arrangements

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Abstract

The influence of lateral critical current density (Jc) distributions on AC transport losses in self-fields at 77 K have been investigated on the Ag-sheathed (Bi, Pb)-2223 multifilamentary tapes with different filament arrangements. The trapped magnetic field distributions in a remanent state on the tape surface measured by a scanning Hall sensor depend on the filament arrangements and gradually deviate from the calculation results of magnetic profile without any Jc variations in their cross sections. The transport loss values are strongly influenced from the filament arrangements in each tape, although the main contribution to the losses comes by the hysteresis loss in the superconductor. These results are explained by the calculation results of the shape of field-free core and flux-penetration-regions, varying with filament arrangements and local Jc distributions along a width direction.

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Authors and Affiliations

  1. Toyohashi University of Technology, 1-1 Tempaku-cho, Toyohashi, Aichi, 441-8580, Japan

    Ryoji Inada, Shusaku Sakamoto, Pingxiang Zhang & Akio Oota

  2. Railway Technical Research Institute, 2-8-38 Hikari-cho, Kokubunji, Tokyo, 185-8540, Japan

    Hiroyuki Fujimoto

Authors
  1. Ryoji Inada
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  2. Shusaku Sakamoto
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  3. Pingxiang Zhang
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  4. Akio Oota
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  5. Hiroyuki Fujimoto
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Inada, R., Sakamoto, S., Zhang, P. et al. Influence of Lateral Critical Current Density Distributions on AC Transport Losses for Ag-Sheathed (Bi, Pb)-2223 Multifilamentary Tapes with Different Filament Arrangements. MRS Online Proceedings Library 689, 527 (2001). https://doi.org/10.1557/PROC-689-E5.27

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  • DOI: https://doi.org/10.1557/PROC-689-E5.27

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