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Numerical simulation for AC losses of HTS tapes in combined alternating transport current and external AC magnetic field with phase shift

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5 Author(s)
Kajikawa, K. ; Res. Inst. of Supercond., Kyushu Univ., Fukuoka, Japan ; Takenaka, A. ; Kawasaki, K. ; Iwakuma, M.
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AC losses are numerically evaluated for a Bi-2223 tape-shaped wire in combined alternating transport current and external AC magnetic field with a phase shift. It is considered that the external field is applied only parallel to the wide surface of tape. Since the multifilamentary wire without twisting is assumed, a solenoidal coil is simplified as a homogeneous superconducting sheet with infinitely wide surfaces. The electromagnetic quantities are numerically calculated by solving Maxwell's equations and the voltage-current characteristics represented by the power law simultaneously. The calculations of AC losses are carried out as a function of both amplitudes of transport current and external magnetic field. The obtained results are plotted on a master curve for the maximum magnetic field applied to the wire

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Applied Superconductivity, IEEE Transactions on  (Volume:11 ,  Issue: 1 )