Corrigendum: Three-dimensional model for numerical electromagnetic field analyses of coated superconductors and its application to Roebel cables

We developed a novel model for numerical electromagnetic field analysis of assembled conductors, considering their three-dimensional structure. Since the superconductor layer of a coated conductor is very thin, we applied a thin-strip approximation, where the current flows only in a direction parallel to the wide face of the coated conductor. Although the amount of computation was reduced by the application of the thin-strip approximation, the three-dimensional geometry of each strand was retained in the modeling: the superconductor layer of each strand was modeled as a thin curved strip that follows the three-dimensional shape of the strand. The electromagnetic interaction between strands was considered in the modeling. The established model was then applied to a high-Tc superconductor (HTS) Roebel cable in which coated conductors are interlaced as strands and exhibit a complex three-dimensional structure. Analyses were performed for an HTS Roebel cable in typical cases: carrying ac current, exposed to an ac magnetic field, and carrying ac current while exposed to an ac magnetic field. The current profile and distribution of ac loss, that is, power dissipation on the wide face of the strand, were observed.