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Analysis of Magnetic Field and Geometry Effects for the Design of HTS devices for AC power Applications

pubblicazioni - Articolo

Analysis of Magnetic Field and Geometry Effects for the Design of HTS devices for AC power Applications

The performance of HTS devices is strongly influenced by local values of the current and field distributions. In this paper, we investigate the influence of the magnetic field and the geometrical configuration on the loss behaviour of a 200 kVA FCL prototype, composed by Bi-2223/Ag tapes wound around a cylindrical support. The investigation is performed by means o finite element computations, with the use of an axisymmetric 2D A– formulation for taking into account the cylindrical geometry. The electrical behaviour of the superconductor is described by means of a B- dependent E-J power-law relation, derived from experimental measurements with a field of different orientation. Several geometrical configurations are analyzed and compared, in order to find the ones with the lowest AC loss. Pubblications Applied Superconductivity, IEEE Transaction on, Vol. 15, Issue 2, June 2005, p.2074-2077 Date 06/06/2005 PUBBLICATO A5033448 (PAD – 700456)

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