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High-efficiency and high-thrust bilateral linear motor

A technology of linear motor and high thrust, applied in the direction of electrical components, electromechanical devices, propulsion systems, etc., can solve the problems of high cost, small output and large volume of linear motors, achieve the elimination of magnetic flux leakage, increase motor power and output, and reduce Effect of Motor Size and Cost of Manufacture and Use

Active Publication Date: 2018-04-06
HENAN POLYTECHNIC UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is the problems of the existing linear motors such as small output, large volume, and high cost, and provides a high-efficiency large-thrust bilateral linear motor with simple structure, large output, and high cost performance

Method used

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  • High-efficiency and high-thrust bilateral linear motor
  • High-efficiency and high-thrust bilateral linear motor

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Embodiment Construction

[0046] Figure 4 , Figure 5 Shown is the structural representation of the high-efficiency and high-thrust bilateral linear motor of the present invention Figure 1 , two, including two unilateral primary arranged face to face to form a bilateral primary, the unilateral primary is composed of primary iron core 1 and primary winding 2 or is only composed of ironless primary winding, and the bilateral secondary is composed of a set of conductive magnets Or two sets of salient pole magnet arrays, the salient pole magnet array is composed of m magnetically conductive salient iron poles 3, and n longitudinal magnets 5 magnetized along the longitudinal direction are alternately mounted, and the magnetic directions of adjacent longitudinal magnets 5 are opposite or away from each other. m and n are integers greater than 1, the distance between the centerlines of two adjacent convex iron poles 3 is the secondary pole pitch Ts, m is the number of poles of the motor, n is the number ...

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Abstract

The invention belongs to the field of linear motors and drive of the linear motors, in particular to a high-efficiency high-thrust double-sided linear motor. The high-efficiency high-thrust double-sided linear motor comprises a double-sided primary consisting of two one-sided primaries arranged face to face, each one-sided primary is composed of a primary winding with or without an iron core, the double-sided primary is matched with a double-sided secondary arranged between the double-sided primary to form a double-sided linear motor, the double-sided secondary comprises at least one group of guide magnets and magnetic bodies which are mounted alternately, and the magnetizing directions of adjacent magnetic bodies are opposite to each other or depart from each other. With adoption of the structure, leakage flux inside the secondary can be reduced largely or eliminated completely and the bottleneck problem restricting the engineering application of linear motors for a long term can be solved. Under the condition of the same size and manufacturing cost, the power and output of the motor can be improved greatly; or under the condition of the same power, the size and manufacturing and use costs of the motor can be reduced largely; therefore, the invention is particularly applicable to the engineering application situation of long-stroke, high-thrust and high-power linear motors and the like.

Description

technical field [0001] The invention belongs to the field of linear motors and their drives, and in particular relates to high-efficiency and large-thrust double-sided linear motors. Background technique [0002] Linear motors have been widely used in many application fields and occasions such as linear motor subways, maglev trains, linear motor machining centers, automated assembly lines, and direct drive elevators. The existing permanent magnet linear motor structures mainly include hidden pole type and salient pole type. The salient pole type permanent magnet linear motor structure is as follows: figure 1 (salient pole unilateral structure) and figure 2 As shown in (salient pole bilateral structure), N and S alternately arranged permanent magnets 20 (magnetization direction is along the longitudinal direction) and protruding iron blocks 24 are pasted on the secondary non-magnetic yoke 23. This structure requires the secondary non-magnetic yoke 23 It is a non-magnetic m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/03
Inventor 汪旭东许孝卓封海潮
Owner HENAN POLYTECHNIC UNIV
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