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Measurements and calculations of transport AC loss in second generation high temperature superconducting pancake coils


Reference:

Yuan, W., Coombs, T. A., Kim, J. H., Kim, C. H., Kvitkovic, J. and Pamidi, S., 2011. Measurements and calculations of transport AC loss in second generation high temperature superconducting pancake coils. Journal of Applied Physics, 110 (11), 113906.

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    Official URL:

    http://dx.doi.org/10.1063/1.3662174

    Abstract

    Theoretical and experimental AC loss data on a superconducting pancake coil wound using second generation (2 G) conductors are presented. An anisotropic critical state model is used to calculate critical current and the AC losses of a superconducting pancake coil. In the coil there are two regions, the critical state region and the subcritical region. The model assumes that in the subcritical region the flux lines are parallel to the tape wide face. AC losses of the superconducting pancake coil are calculated using this model. Both calorimetric and electrical techniques were used to measure AC losses in the coil. The calorimetric method is based on measuring the boil-off rate of liquid nitrogen. The electric method used a compensation circuit to eliminate the inductive component to measure the loss voltage of the coil. The experimental results are consistent with the theoretical calculations thus validating the anisotropic critical state model for loss estimations in the superconducting pancake coil.

    Details

    Item Type Articles
    CreatorsYuan, W., Coombs, T. A., Kim, J. H., Kim, C. H., Kvitkovic, J. and Pamidi, S.
    DOI10.1063/1.3662174
    DepartmentsFaculty of Engineering & Design > Electronic & Electrical Engineering
    Publisher StatementYuan_JAP_2011_110_113906.pdf: Copyright (2011) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Yuan, W., Coombs, T. A., Kim, J. H., Kim, C. H., Kvitkovic, J. and Pamidi, S., 2011. Measurements and calculations of transport AC loss in second generation high temperature superconducting pancake coils. Journal of Applied Physics, 110 (11), 113906, and may be found at http://dx.doi.org/10.1063/1.3662174
    RefereedYes
    StatusPublished
    ID Code28309

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