Electromagnetic Response of Superconducting Tapes

— Theoretical Analysis of Current/Field Distributions and ac Losses —

Abstract

The electromagnetic response of superconducting tapes exposed to transport currents and/or applied magnetic fields is the key issue for electric power application of superconducting tapes. In this article, theoretical expressions on the current distributions, magnetic-field distributions, and ac losses of superconducting tapes are presented. Those expressions are derived on the basis of Bean's critical state model, and the thickness/width ratio of the superconducting layers is regarded as an infinitesimal. The analytical expressions for assembled conductors using superconducting tapes (i.e., stacks, coplanar arrays, and polygonally arranged tapes) are also presented.