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PM offset external rotor radial mixed magnetic bearing with redundant structure

A permanent magnet bias, radial mixing technology, applied in the direction of bearings, shafts and bearings, mechanical equipment, etc., can solve the problems of power consumption, mass and volume, and achieve the effect of reducing power consumption, volume and simple structure

Inactive Publication Date: 2007-07-11
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The radial magnetic bearing of this structure generates a static bias magnetic field through the current, which has the disadvantages of power consumption, mass and volume.

Method used

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  • PM offset external rotor radial mixed magnetic bearing with redundant structure
  • PM offset external rotor radial mixed magnetic bearing with redundant structure
  • PM offset external rotor radial mixed magnetic bearing with redundant structure

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Embodiment Construction

[0014] As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, it is the permanent magnet bias outer rotor radial hybrid magnetic bearing with redundant structure of the present invention, which is the basic form of the present invention. Ring 5, right outer magnetic ring 6, permanent magnet 9, left rotor core 3, right rotor core 7, left stator core 2 (including 8 stator poles), right stator core 8 (including 8 stator poles), It consists of 16 excitation coils 4 , inner magnetically permeable rings 1 and air gaps 10 . The radial interior of the left rotor core 3 and the right rotor core 7 is respectively the left stator core 2 and the right stator core 8, and the radial interior of the left stator core 2 and the right stator core 8 is the inner magnetic ring 1, and the inner magnetic ring 1 Connected with the left stator core 2 and the right stator core 8, an air gap 10 is formed between the inner surface of the left rotor core 3 and the right rotor core 7 and the outer surface...

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PUM

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Abstract

The invention relates to an external rotor radial mixing magnetic bearing biased with permanent magnets, which is provided with redundant structure, comprising left-right external magnetic conductive rings, permanent magnet, left-right rotor cores, left-right stator cores, excitation coil and internal magnetic conductive ring. Left (right) stator core and internal magnetic conductive ring are set in left (right) rotor core in turn. The internal magnetic ring is connected with left-right stator cores. There is air gap between inner face of rotor core and outer face of stator core. Left-right stator cores constitute sixteen magnetic poles and excitation coil is winded on each magnetic pole. They are connected by internal magnetic conductive ring. The permanent magnet is set between left and right external magnetic conductive rings. Two groups of stator poles of redundancy with each other are constituted by not-adjacent four magnetic poles of left stator core, not-adjacent four magnetic poles of right stator core and the excitation coil on them. In the whole device two radial mixing magnetic bearings of redundancy with each other are constituted. The invention makes the structure of external rotor radial mixing magnetic bearing realize redundant. When one radial mixing magnetic bearing is failure, another can work normally so as to improve the stability of magnetic bearing system obviously.

Description

technical field [0001] The invention relates to a non-contact magnetic suspension bearing, in particular to a radial hybrid magnetic bearing with a permanent magnetic bias outer rotor with a redundant structure, which can be used as a magnetic suspension flywheel, a magnetic suspension control moment gyro, an aeroengine, a vacuum molecular pump, and a high-speed machine tool Non-contact support parts for rotating parts in systems such as satellites and satellites. Background technique [0002] Magnetic suspension bearings can be divided into passive magnetic suspension bearings (magnetic force provided by permanent magnets, also called passive magnetic suspension bearings), active magnetic suspension bearings (magnetic force provided by electromagnets, also called active magnetic bearings) and hybrid magnetic suspension bearings ( Magnetic force is provided by permanent magnets and electromagnets). Since the stable domain of the passive magnetic suspension bearing is very s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C32/04
Inventor 韩邦成房建成刘刚孙津济王曦
Owner BEIHANG UNIV
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