An Examination of the Stiffness Terms Needed to Model the Dynamics of an Eddy Current based Maglev Vehicle

This paper re-examines the basis for each eddy current stiffness term computed from prior published steady-state eddy current models. The paper corrects prior analysis work by confirming, through the use of 2-D and 3-D dynamic finite element analysis modelling, that when a magnetic source is moving...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2023-11, Vol.59 (11), p.1-1
Main Authors: Bruce, Colton, Bird, Jonathan Z.
Format: Article
Language:English
Subjects:
Computational modeling
Degrees of freedom
Eddy current
Eddy currents
electrodynamic wheel
Finite element method
Force
lift-to-drag ratio
maglev
Magnetic levitation
Magnetic levitation vehicles
Magnetism
Magnetomechanical effects
Magnetostatics
Manganese
Steady state
Stiffness
Two dimensional analysis
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Summary:This paper re-examines the basis for each eddy current stiffness term computed from prior published steady-state eddy current models. The paper corrects prior analysis work by confirming, through the use of 2-D and 3-D dynamic finite element analysis modelling, that when a magnetic source is moving over an infinite-wide and infinite-long conductive sheet guideway the steady-state lateral and translational stiffness terms will be zero and only the vertical coupled stiffness terms need to be modelled. Using these observations, a much simplified 6 degrees-of-freedom (DoF) linearized eddy current dynamic force model can be used to compute the steady-state force changes in eddy current based maglev vehicles when operating over a wide uniform conductive track.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2023.3287512