AC losses in high-temperature superconducting tapes exposed to perpendicular magnetic fields combined with transport currents

Abstract

AC losses are of great importance when designing devices for electric power applications based on high-temperature superconducting (HTS) tapes. In order to obtain an optimized design one needs to be able to calculate the AC losses that appear in an actual application. One important quantity is the AC losses that appear at the ends of a coil where the magnetic field contains a component perpendicular to the face of the tape. In this study we calculate the AC losses due to the combined action of a perpendicular magnetic field and a transport current. The results are compared to calorimetrically measured data of the AC losses in a BSCCO/Ag HTS tape.