Inner rotor radial magnetic bearing

An inner rotor and magnetic bearing technology, applied in the field of non-contact magnetic suspension bearings, can solve problems such as coupling and affecting the control accuracy of magnetic bearings, and achieve the effect of reducing eddy current loss and improving control accuracy

Active Publication Date: 2012-03-21
北京奇峰聚能科技有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the field of hybrid radial magnetic suspension bearings, there are mainly electromagnetic magnetic circuit coupling problems in the radial x direction and y direction, which will affect the control accuracy of the magnetic bearing. Therefore, the existing radial magnetic bearings all have electromagnetic magnetic circuits in the radial direction. Coupling de

Method used

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  • Inner rotor radial magnetic bearing

Examples

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Embodiment Construction

[0010] Such as figure 1 with figure 2 As shown, a radial magnetic bearing of the inner rotor of the present invention is composed of an outer stator core 1 in the x direction, an outer stator core 2 in the y direction, an outer permanent magnet 3, an outer coil 4 and an inner rotor core 5, wherein x The outer stator core 1 in the direction y and the outer stator core 2 in the y direction are placed vertically, the outer stator core 1 in the x direction and the outer stator core 2 in the y direction each have two magnetic poles, and the outer coil 4 is wound on them, and the outer permanent magnet 3 is located at Between the outer stator core 1 in the x direction and the outer stator core 2 in the y direction, the radial interior of the outer stator core 1 in the x direction and the outer stator core 2 in the y direction is the inner rotor core 5, and the outer stator core in the x direction A magnetic air gap is formed between the outer stator core 2 and the inner rotor core...

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Abstract

An inner rotor radial magnetic bearing comprises an x-direction outer stator core, a y-direction outer stator core, an outer permanent magnet, an outer coil, and an inner rotor core, wherein the x-direction outer stator core and the y-direction outer stator core are vertically disposed; both the x-direction outer stator core and the y-direction outer stator core comprise two magnetic poles with the outer coil winded on the poles; the outer permanent magnet is located between the x-direction outer stator core and the y-direction outer stator core; the inner rotor core is inside the x-directionouter stator core and the y-direction outer stator core in the radial direction; a magnetic air gap is formed between the inner rotor core and the x-direction outer stator core and the y-direction outer stator core. The invention allows an electromagnetic circuit to be uncoupled in the x and y directions of the outer stator cores of the radial magnetic bearing, and thus the control precision of the radial magnetic bearing is increased.

Description

technical field [0001] The invention relates to a non-contact magnetic suspension bearing, in particular to a permanent magnet bias magnetic bearing with radial decoupling of an inner rotor, which can be used as a non-contact support for rotor components in high-speed machinery. Background technique [0002] At present, magnetic suspension bearings are divided into pure electromagnetic bearings and hybrid magnetic suspension bearings with permanent magnetic bias and electromagnetic control. The former uses large current and power consumption, and hybrid magnetic suspension bearings with permanent magnetic bias and electromagnetic control. The electromagnetic field provides auxiliary adjustment. Bearing capacity, the magnetic field generated by the permanent magnet bears the main bearing capacity, so this kind of bearing can reduce the control current and reduce the loss. At present, in the field of hybrid radial magnetic suspension bearings, there are mainly electromagnetic ...

Claims

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Application Information

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IPC IPC(8): F16C32/04
Inventor 蒋涛
Owner 北京奇峰聚能科技有限公司
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