Lorentz-force axial magnetic bearing of outer rotor

A technology of axial magnetic bearings and outer rotors, applied in the direction of shafts and bearings, bearings, mechanical equipment, etc., can solve the problems of Lorentz force magnetic bearings, such as temperature rise, difficult heat dissipation, and large coil current, to achieve favorable heat Dispersion, high structural reliability, and the effect of improving reliability
CN104728264AActive Publication Date: 2015-06-24BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
Publication Date
2015-06-24

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Abstract

The invention discloses a lorentz-force axial magnetic bearing of an outer rotor. The lorentz-force axial magnetic bearing mainly comprises two parts, namely a stator system and a rotor system, wherein the stator system mainly comprises a skeleton, an upper winding, a lower winding, epoxy resin glue, magnetic-conductive seats and a stator locking nut; the rotor system mainly comprises upper magnetic steel, lower magnetic steel, a magnetic-isolated ring, a magnetic-conductive ring, a rotor locking nut and a sleeve. The lorentz-force axial magnetic bearing disclosed by the invention has the beneficial effects that the windings are directly provided with the magnetic-conductive seats with good heat-conductive performances, so that the copper loss and the rotary loss of the windings can be quickly conducted out by the magnetic-conductive seats; since a single-edge magnetic steel structure is adopted, the lorentz-force axial magnetic bearing has the advantages of simple structure, good linearity, high bandwidth, good heat conducting performance and the like, the structure reliability of the axial magnetic bearing is improved, and simultaneously the temperature rise of the magnetic bearing is reduced, so that the lorentz-force axial magnetic bearing can be used for non-contact suspension supporting such as a magnetic suspension momentum wheel and a magnetic-suspension gyroscope.
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Description

technical field

[0001] The invention relates to a non-contact outer rotor Lorentz force axial magnetic bearing, in particular to an outer rotor Lorentz force axial magnetic bearing. Background technique

[0002] Magnetic suspension bearings are divided into reluctance magnetic bearings and Lorentz force magnetic bearings. The former changes the magnetic density and flux at the pole surface by changing the size of the air gap or magnetomotive force, thereby controlling the magnitude and direction of the electromagnetic force. The air gap of the latter is constant, and the magnitude and direction of the ampere force in the coil are controlled by changing the magnitude and direction of the winding current. For the reluctance magnetic bearing, the magnetic density is proportional to the control current, and the electromagnetic force is proportional to the square of the magnetic density. The electromagnetic force of the reluctance magnetic bearing is proportional to the control c...

Claims

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