Three-dimensional magnetic flux permanent magnet linear motor of multi-air-gap independent winding structure

A permanent magnet linear motor and winding structure technology, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problem of low thrust density of single air gap permanent magnet linear motors, and achieve easy cooling, fault tolerance, and improved magnetic The effect of load and electrical load

Inactive Publication Date: 2014-07-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of low thrust density of the existing single-air-gap permanent-magnet linear motor, the present invention proposes a three-dimensional flux permanent-magnet linear motor with multi-air-gap independent winding structure

Method used

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  • Three-dimensional magnetic flux permanent magnet linear motor of multi-air-gap independent winding structure
  • Three-dimensional magnetic flux permanent magnet linear motor of multi-air-gap independent winding structure
  • Three-dimensional magnetic flux permanent magnet linear motor of multi-air-gap independent winding structure

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Embodiment approach 1

[0036] Such as figure 1 , figure 2 As shown, this embodiment is a single-phase motor 4 , including a primary component 1 , a secondary component 2 and (2n−2) air gaps 3 . The primary assembly 1 is composed of n primary units 11 and armature windings 12. The primary units 11 are arranged vertically and horizontally. Each primary unit has an array of (2m+1) permanent magnets 112 with staggered polarities. Each The width of the permanent magnet is a pole width τ / 2, and the magnetization direction of the permanent magnet is perpendicular to the plane of the air gap. For the permanent magnet array corresponding to the adjacent primary unit, the N pole permanent magnet 113 at the same horizontal position is opposite to the magnetization direction of the S pole permanent magnet 114, and the two ends of the permanent magnet array are provided with a square ring-shaped magnet core 111. The magnetic core 111 is connected into an integral ring structure via upper and lower beams. Two...

Embodiment approach 2

[0044] Such as Figure 8 As shown, the difference between the second embodiment and the first embodiment is that the secondary unit of the first embodiment is provided with a non-magnetic permeable groove 212 , and the secondary unit of the second embodiment is provided with a magnetic isolation bridge 213 . Similarly, the magnetic isolation bridge of the secondary unit of the motor in this embodiment can also be filled with a certain strength of lightweight material.

Embodiment approach 3

[0046] Such as Figure 9 As shown, the difference between the third embodiment and the first embodiment is that the first embodiment is a single-phase motor, and the third embodiment is a three-phase motor. The present embodiment is a three-phase motor, and the structures of the B-phase motor 5 and the C-phase motor 6 are exactly the same as that of the A-phase motor 4. The motor modules of each phase are arranged in the horizontal direction, and a magnetic core is arranged between every two-phase motors. The width of the permeable core in the horizontal direction S=(k±2 / 3)τ. The motor adopts a modular design for each phase, so that when a certain phase motor fails, other phases are not affected, which is conducive to realizing fault tolerance and improving the reliability of the motor.

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Abstract

The invention provides a three-dimensional magnetic flux permanent magnet linear motor of a multi-air-gap independent winding structure and belongs to the technical field of motors. The three-dimensional magnetic flux permanent magnet linear motor comprises a primary assembly, a secondary assembly and multiple air gaps. The primary assembly comprises n primary units and armature windings, and the primary units are arranged perpendicular to the horizontal direction. An array composed of 2m+1 permanent magnets arrayed in a polarity staggering mode is arranged on each primary unit, the width of each permanent magnet is T/2 (T is polar distance), and two rectangular grooves are formed by annular magnetic permeability iron cores arranged at the two ends of each permanent magnet and the permanent magnet, and the armature windings are arranged in two grooves in the vertical direction and are the same in phase. The secondary assembly is composed of n-1 secondary units, wherein the secondary units and the primary units are arrayed perpendicular to the horizontal direction in a staggered mode, and non-magnetic-permeability grooves or magnetism isolation bridges are arranged periodically arranged on secondary unit iron cores. The non-magnetic-permeability grooves of the adjacent secondary units are staggered by T/2 distance in the horizontal direction. The motor is provided with 2n-2 air gaps. A three-dimensional magnetic circuit is adopted for the motor, high electromagnetic loads can be effectively achieved, and the motor has the advantages of being high in thrust density and reliability.

Description

technical field [0001] The invention belongs to the field of motors, in particular to a three-dimensional magnetic flux permanent magnet linear motor with multi-air-gap independent winding structure. Background technique [0002] The traditional linear motion is mostly realized by using a rotating motor to convert the rotary motion into a linear motion through a synchronous belt, a reduction gear, and a ball screw. This system has complex intermediate transmission mechanisms, complex system structure, and limited dynamic performance. Now, the direct transmission technology based on linear motors has been applied in linear motion occasions such as machine tools and elevators without the intermediate complex transmission mechanism, and its application fields are gradually expanding to various fields of production and life. However, unlike rotary motor systems, most direct-drive linear motor systems (except for high-speed and high-acceleration linear motors in electromagnetic e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/03
Inventor 黄旭珍谭强王庆龙周波
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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