Abstract

This paper is devoted to numerically investigate the structural effect of the permanent magnet guideway (PMG) on the dynamic characteristics of a levitated high temperature superconductor (HTS). Being different from the existing results of this subject, this work considers the magnetic stimulation with translational symmetry (being not axisymmetric) and the geometry of the PMG to provide the external field has been economically optimized by a self-developed intelligent scheme, which makes our studies be closer to the practical situation. We introduce a 2-D finite-element model of generalized magnetic vector potential to theoretically describe and numerically solve the electromagnetic behavior of HTS over the PMG. A second-order dynamic equation is applied to characterize the vertical vibration of the levitated HTS subject to external disturbance, and it couples the electromagnetic model via the levitation force. We studied three typical configurations of PMG, all of which have been regarded as candidates in the development of the HTS maglev transit.

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