Finite element calculation of forces on a DC magnet moving over an iron rail

Finite element calculation of forces on a DC magnet moving over an iron rail

This paper describes results taken from a test rig consisting of a DC magnet over a 0.35 m radius spinning iron wheel. The magnet is excited by two coils. The iron parts are unlaminated. Eddy currents are induced in the wheel by virtue of the relative motion of wheel and magnetic field. All iron par...

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Veröffentlicht in:IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) 1994-11, Vol.30 (6), p.4680-4682
Hauptverfasser: Rodger, D., Allen, N., Coles, P.C., Street, S., Leonard, P.J., Eastham, J.F.
Format: Artikel
Sprache:eng
Schlagworte:
320202 > Energy Conservation, Consumption, & Utilization-- Transportation-- Railway
ADVANCED PROPULSION SYSTEMS
Coils
COMPARATIVE EVALUATIONS
DESIGN
Eddy currents
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
EVALUATION
Finite element methods
Iron
LEVITATED TRAINS
Magnetic fields
Magnetic levitation
MAGNETS
NONLINEAR PROBLEMS
Spinning
TEST FACILITIES
Testing
THREE-DIMENSIONAL CALCULATIONS
TRAINS
Vehicles
VEHICLES 330300 > Advanced Propulsion Systems-- Electric-Powered Systems
Wheels
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Beschreibung
Zusammenfassung:This paper describes results taken from a test rig consisting of a DC magnet over a 0.35 m radius spinning iron wheel. The magnet is excited by two coils. The iron parts are unlaminated. Eddy currents are induced in the wheel by virtue of the relative motion of wheel and magnetic field. All iron parts have a nonlinear B-H characteristic. Forces on the magnet are compared with 3D finite element predictions. The results are of relevance to the design of MAGLEV vehicles which are supported by DC magnets.< >
ISSN:0018-9464
1941-0069
DOI:10.1109/20.334188