A Hybrid Excitation Switch Flux Linkage Linear Motor

A technology of switching flux linkage and mixed excitation, which is applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of difficult adjustment of the motor magnetic field, unfavorable high-speed operation of the motor, etc., to improve the adjustment ability, avoid mutual competition, and facilitate processing Effect

Active Publication Date: 2019-01-29
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the magnetic field of the switch flux linkage permanent magnet linear motor is difficult to adjust, which is not conducive to the high-speed operation of the motor

Method used

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  • A Hybrid Excitation Switch Flux Linkage Linear Motor
  • A Hybrid Excitation Switch Flux Linkage Linear Motor
  • A Hybrid Excitation Switch Flux Linkage Linear Motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, the hybrid excitation switching flux linkage linear motor of this embodiment includes a long stator 1 and a short mover 2, the short mover 2 includes an armature 21 and a magnetic pole 22, and the armature 21 includes an armature core 211, a permanent magnet pole 212, the armature winding 213 and the magnetic isolation bridge 214, the magnetic pole 22 includes the excitation core 221 and the excitation winding 222; the permanent magnet poles 212 are arranged alternately, the magnetization direction of the adjacent permanent magnet poles 212 is opposite, and the magnetization direction and the movement direction are kept Consistently, both the armature 21 and the magnetic pole 22 are fixed on the mobile platform, they are relatively stationary, and both maintain a certain air gap length with the long stator 1 . The excitation winding 222 is sleeved on the salient pole of the excitation core 221 to form an excitation pole. The polarity of adjace...

Embodiment 2

[0038] image 3 The structure shown is a deformed structure of Embodiment 1, and figure 1The difference is that the magnetic isolation bridge is omitted, so that the iron core of the short mover can adopt a modular U-shaped structure, which reduces production costs. The disadvantage is that the repulsive force between adjacent permanent magnet poles makes installation difficult.

Embodiment 3

[0040] Such as Figure 4 As shown, this embodiment is aimed at the long stator structure of Embodiment 1 and Embodiment 2, and its main difference is: the magnet adjustment block in the long stator adopts a continuous structure, and the long bolts are used in the magnet adjustment block to realize Definitely fixed, the advantage is that the processing technology is simplified, and the disadvantage is that the thrust density is reduced.

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Abstract

The invention discloses a hybrid excitation switch flux-linkage linear motor, which comprises a long stator and a short mover, wherein the short mover comprises an armature and a magnetic pole, the armature comprises an armature core, a permanent magnetic pole and an armature winding, and the magnetic pole comprises an excitation core and an excitation winding. The hybrid excitation switch flux-linkage linear motor divides the short mover into two parts, one side is the armature and the other side is the magnetic pole, and the armature and the magnetic pole are independent of each other and positioned on different sides of the long stator, thereby realizing the advantages of a flux switching type structure, and effectively avoiding the shortcoming of mutual competition of the excitation components, the permanent magnet and the armature on circuits and magnetic circuits; and the magnitude of the magnetic field can be changed conveniently through changing the current of the excitation winding, thus the flux of the armature winding can be adjusted to realize hybrid excitation, and the broadening of a weak magnetic constant power operation range and improvement of overload capacity can be realized.

Description

technical field [0001] The invention belongs to the technical field of hybrid excitation linear motors, in particular to a hybrid excitation switch flux linkage linear motor. Background technique [0002] The linear motor directly converts electrical energy into mechanical energy without the need for an intermediate transmission part, which can improve transmission efficiency. At the same time, because it is not affected by centrifugal force, the speed can also be unlimited theoretically. In recent years, the research hotspot in the field of linear direct drive is the permanent magnet linear synchronous motor, which has the advantages of high thrust density, high efficiency, high speed, and high acceleration, and is widely used in high-speed CNC machine tools, semiconductor processing, vertical lifting transportation systems, high-speed ground High-performance fields such as transportation systems, but the bottleneck of its promotion and application lies in cost, because whe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/03
CPCH02K41/033
Inventor 卢琴芬曾志强诸自强
Owner ZHEJIANG UNIV
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