Modeling the Dynamic Electromechanical Suspension Behavior of an Electrodynamic Eddy Current Maglev Device

Abstract

Abstract-A 2-D analytic based eddy-current transient model for a conducting plate is derived that is capable of accounting for continuous changes in the input conditions. Only the source field on the surface of the conducting plate needs to be known. In addition, a 2-D steady-state analytic based eddy-current model that is capable of accounting for frequency and velocity changes in two directions is derived. Both analytic based models have been validated using finite element code. The transient and steady-state models are integrated into an electromechanical system where the magnetic source is a Halbach rotor. The accuracy of both calculation methods is compared. The stiffness and damping coefficients are derived using the steadystate model.

Progress on electrodynamic passive magnetic bearings for rotor levitation

“…This concept has been studied to provide lift force to levitate high speed trains, initially exploiting superconducting materials 5,6 according to the scheme shown in Figure 1(b), and more recently using standard conducting materials. 7,8 The two above-mentioned mechanisms of eddy current induction can be used to levitate a rotor's axial and/or radial degrees of freedom. 9 A general condition necessary to devise an EDB is to have a conducting object subject to a magnetic flux presenting a strong gradient with respect to a displacement of the rotor.…”

O arrasto magnético e as correntes de Foucault: um experimento de baixo custo com vídeo-análise

“…Por exemplo, é utilizado em dispositivos sofisticados como, balanças de precisão, medidores de corrente e tensão e fornos de indução [4][5][6]. Além disso, as correntes de Foucault, que dão origem ao fenômeno do arrasto, também são responsáveis por outro fenômeno físico impressionante e de grande aplicação prática e tecnológica, a levitação magnética [7][8][9][10]. Uma vez que explicita aspectos do eletromagnetismo clássico de uma maneira bastante perceptível, facilmente compreensível e muito bela, as correntes de Foucault e os fenômenos associados vêm recebendo grande atenção por parte de professores e pesquisadores do ensino básico e superior nos últimos anos [11][12][13][14][15].…”

Electrodynamic Wheel Magnetic Rolling Resistance

“…In this paper a magnetic rolling resistance (MRR) metric is proposed that allows a maglev vehicles' performance to be intuitively compared with traditional modes of transportation. The utility of the MRR is demonstrated by using it to study the performance limits of an EDW driven maglev vehicle [3,5,6].…”