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Double-permanent magnet outer rotor permanent magnet-biased spherical radial magnetic bearing

A permanent magnet bias, double permanent magnet technology, applied in magnetic bearings, rotating bearings, bearings, etc., can solve the problem of reducing the accuracy of the gyro moment of the magnetic suspension gimbal momentum wheel, and improve the accuracy and reduce the residual magnetic moment. Effect

Active Publication Date: 2015-03-04
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the inertial axis of the flywheel rotor deflects with the geometric axis of the magnetic bearing stator, the electromagnetic attraction forces in the 8 magnetic pole surfaces of the magnetic bearing are not equal in magnitude, and none of them point to the center of mass of the flywheel rotor. Reduce the gyro torque accuracy of the maglev universal momentum wheel

Method used

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  • Double-permanent magnet outer rotor permanent magnet-biased spherical radial magnetic bearing

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specific Embodiment approach

[0019] The preferred specific embodiment of the double permanent magnet outer rotor permanent magnet offset spherical radial magnetic bearing of the present invention is:

[0020] It consists of two parts: stator system and rotor system. The stator system mainly includes: upper stator spherical iron core, lower stator spherical iron core, excitation coil, stator magnetic isolation ring, stator upper magnetic conductive ring, stator lower magnetic conductive ring, stator permanent magnet, stator sleeve The rotor system mainly includes: rotor upper spherical iron core, rotor lower spherical iron core, rotor magnetic isolation ring, rotor upper magnetic permeability ring, rotor lower magnetic permeability ring, rotor permanent magnet, rotor sleeve and rotor lock ring; The upper spherical iron core of the stator consists of 4 magnetic poles, the lower spherical iron core of the stator consists of 4 magnetic poles, the upper spherical iron core of the stator and the lower spherical ...

specific Embodiment

[0028] like figure 1 , 2 As shown, a double permanent magnet outer rotor permanent magnet offset spherical radial magnetic bearing is mainly composed of a stator system and a rotor system. It is characterized in that: the stator system mainly includes: stator upper spherical core 1, stator lower spherical core 2. Excitation coil 3, stator magnetic isolation ring 4, stator upper magnetic ring 5, stator lower magnetic ring 6, stator permanent magnet 7, stator sleeve 8 and stator lock ring 9; the rotor system mainly includes: rotor upper spherical iron core 10. Rotor lower spherical core 11, rotor magnetic isolation ring 12, rotor upper magnetic ring 13, rotor lower magnetic ring 14, rotor permanent magnet 15, rotor sleeve 16 and rotor lock ring 17; stator upper spherical core 1 composes 4 The stator lower spherical core 2 forms 4 magnetic poles, the stator upper spherical core 1 and the stator lower spherical core 2 form 8 magnetic poles at the upper and lower ends of the magne...

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Abstract

The invention discloses a double-permanent magnet outer rotor permanent magnet-biased spherical radial magnetic bearing which comprises two parts, namely a stator system and a rotor system, wherein the stator system mainly comprises a stator upper spherical iron core, a stator lower spherical iron core, an exciting coil, a stator magnetic insulating ring, a stator upper magnetic conducting ring, a stator lower magnetic conducting ring, a stator permanent magnet, a stator sleeve and a stator locking ring; the rotor system mainly comprises a rotor upper spherical iron core, a rotor lower spherical iron core, a rotor magnetic insulating ring, a rotor upper magnetic conducting ring, a rotor lower magnetic conducting ring, a rotor permanent magnet, a rotor sleeve and a rotor locking ring. The double-permanent magnet outer rotor permanent magnet-biased spherical radial magnetic bearing disclosed by the invention can be used for overcoming the defect that moment is disturbed by radial twisting generated when the electromagnetic force of various magnetic poles is unequal, enhancing the accuracy of the gyroscopic moment of a magnetic suspension universal momentum wheel and reducing the remnant magnetic moment generated by a radial magnetic bearing.

Description

technical field [0001] The invention relates to a non-contact magnetic suspension bearing, in particular to a double permanent magnet outer rotor permanent magnet offset spherical radial magnetic bearing. Background technique [0002] Magnetic suspension bearings are divided into pure electromagnetic magnetic bearings and permanent magnetic bias hybrid magnetic bearings. The former uses a bias current to provide a bias magnetic field, which has large current and high power consumption, while the latter uses a permanent magnet magnetic field generated by a permanent magnet to provide a bias magnetic field. , instead of the bias magnetic field generated by the bias current in the pure electromagnetic magnetic bearing, it can greatly reduce the control current of the magnetic bearing, reduce the power consumption of the power amplifier, reduce the volume of the magnetic bearing, and improve the bearing capacity. Therefore, permanent magnet bias magnetic bearings are widely used...

Claims

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Application Information

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IPC IPC(8): F16C32/04
CPCF16C23/00F16C32/0465F16C32/0468F16C32/048
Inventor 刘强任元王卫杰蔡远文樊亚洪缪存孝叶郭波邵琼玲
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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