Magnetic bearing system
AssigneeLust Antriebstechnik GmbH
InventorsSiegfried Silber, Wolfgant Amrhein
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Abstract
A magnetic bearing for generating magnetic forces. A configuration of electromagnetic poles and of permanent magnetic poles which, to the greatest possible extent, is planar enables the generation of a magnetic flux in the air gaps toward the rotor, also in the de-energized state. If this flux is modulated using a control flux, magnetic forces can be exerted upon the rotor for the purpose of providing magnetic support. This configuration makes it possible to provide magnetic bearings of a simple mechanical design.
Claims33
A magnetic bearing system, comprising at least one radial bearing, at least one electronic control unit and stator and rotor elements for generation of radial forces wherein the flux-forming and flux-conducting stator and rotor elements are formed from ferromagnetic parts, coils and permanent magnets, wherein one or more permanent magnets designed as magnetic poles are provided in the stator of the radial bearing having at least two coils between electromagnetic poles having at least one coil (23), said one or more permanent magnets being arranged so that a magnetic potential drop due to the fluxes generated by the permanent magnets is developed in the air gap in the angular regions of the electromagnetic poles (24, 25, 26) so that stabilization in two degrees of freedom occurs when current is applied to the coils.
Dependencies are inferred from the claim text.