NDLI: Losses in HTS Tapes due to AC External Magnetic Field and AC Transport Current

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Losses in HTS Tapes due to AC External Magnetic Field and AC Transport Current

Content Provider	CiteSeerX
Author	Nibbio, N. Taghezout, D. Lombard, P. Sjöström, M. Dutoit, B.
Abstract	: The E-J power law as electric characterization of the HTS material in Finite Element computations has shown good agreement with measurements of field-dependent critical current density and losses due to transport current. We use this technique to investigate the loss caused by AC transport current in self-field and in applied AC magnetic field in both rectangular monocore and multicore tapes, where the current is generated by means of a voltage source. The current density is first kept constant and then varied with the local flux density. Furthermore, the simulations show that the transfer current decreases due to the screening currents induced by the external field. 1. INTRODUCTION Nowadays High Temperature Superconductor systems such as power cables or transformers exhibit not negligible AC loss in presence of AC transport current and external magnetic field. The superconductor part of these systems is generally composed of Ag-sheathed BSCCO tapes. The nonlinear behavior of those ...
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Subject Keyword	Ac Transport External Field Nonlinear Behavior Multicore Tape Voltage Source External Magnetic Field Hts Material Ac External Magnetic Field Negligible Ac Loss Finite Element Computation Superconductor Part Power Cable Good Agreement Rectangular Monocore Ag-sheathed Bscco Tape Screening Current E-j Power Law Transfer Current Decrease Applied Ac Magnetic Field Ac Transport Current Local Flux Density Hts Tape Current Density Field-dependent Critical Current Density Electric Characterization
Content Type	Text

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