Asymmetric double-side type permanent magnet straight line synchronous motor

A permanent magnet linear synchronization and asymmetric technology, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problems of thrust density limitation, poor heat dissipation conditions, and difficult processing, so as to reduce the consumption, avoid heat dissipation difficulties, and process convenient effect

Active Publication Date: 2014-12-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to reduce the cost, the existing method is to use the switch flux linkage permanent magnet linear synchronous motor, and place the permanent magnet on the armature. The problem: on the one hand, the permanent magnet is surrounded by coils, and the heat dissipation conditions are too poor; on the other hand, the slot area and the permanent magnet are mutually restricted, and the thrust density is limited. The armature is composed of multiple discrete parts, which is difficult to process.

Method used

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  • Asymmetric double-side type permanent magnet straight line synchronous motor
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  • Asymmetric double-side type permanent magnet straight line synchronous motor

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 2 As shown, the asymmetric bilateral permanent magnet linear synchronous motor of this embodiment includes a long stator 1 and a short mover 2, and the short mover 2 includes an armature 21, a magnetic pole 22, a mobile platform 23 and mounting bolts 24, and the armature 21 Including armature winding 211 and armature core 212, the magnetic pole 22 is composed of permanent magnets 221 and magnetic pole cores 222 arranged alternately, the magnetization direction of adjacent permanent magnets is opposite, and the magnetization direction is consistent with the direction of motion, the armature 21 and the magnetic pole 22 Both are fixed on the mobile platform, both are relatively stationary, both are fixed below the mobile platform 23 by mounting bolts 24, and both sides maintain a certain air gap length with the long stator 1. The number of short mover armature slots is the same as the number of permanent magnet poles, and the permanent magnets are aligned w...

Embodiment 2

[0035] image 3 Shown is a kind of deformed structure of embodiment one, and figure 2 The difference is that the relative positions of the permanent magnet and the armature are different, and the permanent magnet is aligned with the armature slot in this implementation structure.

Embodiment 3

[0037] Such as Figure 4 As shown, the characteristics of this embodiment are: the permanent magnet 221 in the magnetic pole 22 is attached to the magnetic pole core 222, two permanent magnets are placed under each armature tooth, closely arranged, the polarity is opposite, and the magnetization direction is perpendicular to the direction of motion. , the magnetization directions of adjacent permanent magnets are opposite.

[0038] The working principle of the asymmetric bilateral permanent magnet linear synchronous motor in this embodiment is the same as that of the first embodiment. With the change of the position of the mover, the flux linkage in the armature winding is positive and negative alternately, which is basically sinusoidal and bipolar. magnetic chain.

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Abstract

The invention discloses an asymmetric double-side type permanent magnet straight line synchronous motor which comprises a long stator and a short rotor. The short rotor comprises an armature and a magnetic pole which are arranged on a movable platform and are placed on the two sides of the long stator respectively. The magnetic pole is of a salient pole type structure or a non-salient pole type structure. The armature comprises an armature core and armature windings arranged on armature teeth in a sleeved mode. The magnetic pole comprises a magnetic pole iron core and a permanent magnet. The long stator is formed by a plurality of magnetism adjusting iron blocks which are arrayed in a straight line. The difference between the number of the armature teeth and the number of the magnetism adjusting iron blocks is 1-2. According to the motor, the armature and the magnetic pole are used as one side of the short rotor respectively, the advantage of a flux switching type structure is achieved, magnetic pole radiating difficulty is avoided effectively, the shortcoming that a magnetic circuit and an electric circuit compete is overcome, the using number of permanent magnets is greatly reduced, magnetic field adjusting capacity is improved, and system cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of synchronous motors, and in particular relates to an asymmetric bilateral permanent magnet linear synchronous motor. Background technique [0002] The permanent magnet linear synchronous motor has the advantages of both the permanent magnet motor and the linear motor. It converts electrical energy directly into linear motion mechanical energy without the need for intermediate linkage parts and is not affected by centrifugal force. It has the advantages of simple structure, light weight, small size, high speed and high precision. , high efficiency, large thrust and other significant advantages, it has been widely used in high-speed CNC machine tools, semiconductor processing, vertical lifting conveying systems, high-speed ground transportation systems and other fields. Bilateral structure permanent magnet linear synchronous motor can be regarded as two unilateral structure permanent magnet linear synchronou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/03
Inventor 卢琴芬诸自强
Owner ZHEJIANG UNIV
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