Abstract
The critical current density (Jc) in the superconducting layer in the typical coated conductor is known to be not uniform along a lateral direction of its cross section. Non-uniformity of Jc values in a superconducting layer is the dominant factors of the AC loss characteristics together with its geometrical shape and arrangement in an actual power device. In this paper, we investigated the AC loss characteristics on the single-layer cable composed of thin rectangular superconducting strips with various lateral Jc distributions through the numerical analysis. In our analysis, several rectangular strips were arranged on a cylindrical former, in a parallel way to the conductor length. Numerical calculation of magnetic field distributions and loss values under AC current transmission were performed, by taking into account the locally-varying Jc values in a tape strand and geometrical factors of cables. The influence of non-uniformity of Jc values along a tape width on loss under AC current transmission in the cable conductors was discussed.
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