Kinetic wheel arrangement incorporating magnetic bearings, particularly intended to serve as energy accumulator
First Claim
1. A kinetic wheel arrangement, comprising:
- a stator,a rotor,magnetic bearings formed by cooperating annular parts respectively connected to the stator and to the rotor to magnetically suspend the rotor with respect to the stator,mechanical bearings to enable the stator to support the rotor when the latter is not suspended magnetically,an inertia flywheel constituting a part of the rotor, anda magnetic system having at least one electrically conductive disc connected to the stator and disposed between two magnetized rings connected to the rotor, said electrically conductive disc having in two opposite quadrants magnetic inlays, said magnetic inlays are connected to one another by wide magnetic zones disposed in the other two opposite quadrants, whereby said magnetic system imparts a radial rigidity of the rotor with respect to the stator in first one predetermined radial direction a value different from that presented by said radial rigidity in other radial directions such that a radial dissymmetry of rigidity is introduced and vibrations capable of appearing along said first predetermined radial direction and another radial direction are uncoupled.
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Abstract
The invention relates to a kinetic wheel arrangement comprising a stator and a rotor, magnetic bearings formed by cooperating parts respectively connected to the stator and to the rotor in order magnetically to suspend the rotor with respect to the stator, mechanical bearings to allow the stator to support the rotor when the latter is not suspended magnetically, an inertia flywheel constituting a part of the rotor, and means for monitoring, along the axis of rotation Z--Z defined by the stator, the axial position of the rotor with respect to the stator. According to the invention, this arrangement is characterized in that it comprises a magnetic system for giving the radial rigidity of the rotor with respect to the stator, in at least one fixed radial direction, a value different from that presented by said radial rigidity in the other radial directions. The invention is more particularly applicable to the kinetic storage of energy.
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Citations
10 Claims
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1. A kinetic wheel arrangement, comprising:
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a stator, a rotor, magnetic bearings formed by cooperating annular parts respectively connected to the stator and to the rotor to magnetically suspend the rotor with respect to the stator, mechanical bearings to enable the stator to support the rotor when the latter is not suspended magnetically, an inertia flywheel constituting a part of the rotor, and a magnetic system having at least one electrically conductive disc connected to the stator and disposed between two magnetized rings connected to the rotor, said electrically conductive disc having in two opposite quadrants magnetic inlays, said magnetic inlays are connected to one another by wide magnetic zones disposed in the other two opposite quadrants, whereby said magnetic system imparts a radial rigidity of the rotor with respect to the stator in first one predetermined radial direction a value different from that presented by said radial rigidity in other radial directions such that a radial dissymmetry of rigidity is introduced and vibrations capable of appearing along said first predetermined radial direction and another radial direction are uncoupled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification