Bilateral short primary synchronous reluctance linear motor

A technology of synchronous reluctance and linear motors, applied in magnetic circuits, electrical components, electromechanical devices, etc., can solve the problems of low efficiency and power factor due to end effects, large thrust fluctuations, limited speed range of linear induction motors, etc.

Inactive Publication Date: 2021-05-18
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the linear induction motor is widely used in the field of urban rail transit. However, due to its end effect and low efficiency and power factor, the speed regulation range of the linear induction motor is limited; the permanent magnet linear motor has large thrust and high power density. And high-efficiency laws, etc., but in the long-distance drive system, the use of a large number of permanent magnet materials brings challenges to the maintenance and installation environment while increasing the manufacturing cost; the switched reluctance linear motor has simple structure, high reliability, and low cost. and other advantages, the main problem is the large thrust fluctuation

Method used

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  • Bilateral short primary synchronous reluctance linear motor
  • Bilateral short primary synchronous reluctance linear motor
  • Bilateral short primary synchronous reluctance linear motor

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 1 As shown, this embodiment provides a bilateral short primary synchronous reluctance linear motor, including two symmetrically arranged long secondary stators 2 and a short primary mover 1 installed between the long secondary stators 2 and capable of reciprocating motion , there is a gap 3 between the short primary mover 1 and the long secondary stator 2 on both sides, the short primary mover 1 includes a primary iron core 11 and an armature winding 12, and the primary iron core 11 is close to the surface of the long secondary stator Both sides of 21 are provided with cogged structures, and the armature winding 12 is arranged in the cogged structures. The long secondary stator 2 includes several magnetic pole modules 22 sequentially installed along the moving direction of the short primary mover 1 .

[0031] In the present invention, cogging structures and armature windings 12 are respectively arranged on both sides of the short primary mover 1, and lon...

Embodiment 2

[0035] This embodiment provides a bilateral short-primary synchronous reluctance linear motor. The overall structure of the motor is basically the same as that of Embodiment 1. The difference is that the magnetic pole module 22 in this embodiment is as Figure 4 As shown, the outer contour of the magnetic barrier 221 in the magnetic pole module 22 is a streamline shape formed by a spline curve, and the rest are the same as in the first embodiment. The main difference between embodiment 1 and embodiment 2 is that the corresponding magnetic permeability ratio and the direction of the magnetic force lines near the outer contour of the magnetic barrier 221 are different, resulting in differences in the salient pole ratio and torque density of the motor, which need to be considered comprehensively for a long time The mechanical strength of the secondary stator 2 is chosen as a trade-off.

Embodiment 3

[0037] This embodiment provides a bilateral short-primary synchronous reluctance linear motor. The overall structure of the motor is basically the same as that of Embodiment 1. The difference is that the magnetic pole module 22 in this embodiment is as Figure 5As shown, the magnetic pole module 22 includes a non-iron rib magnetic pole module 22, and the non-iron rib magnetic pole module 22 includes a magnetic barrier 221, a magnetic bridge 222 and a non-magnetic filling material, and a plurality of magnetic barriers 221 and magnetic bridges 222 are arranged in a staggered manner , the non-magnetic filling material is filled in the magnetic barrier 221 to connect a plurality of magnetic bridges 222 into one body, and the outer contour of the magnetic barrier 221 is a multi-linear shape composed of straight line segments. The rest are the same as in Embodiment 1. The main difference between Embodiment 1 and Embodiment 3 is: from the perspective of the electromagnetic characteris...

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Abstract

The invention relates to a bilateral short primary synchronous reluctance linear motor which comprises two symmetrically arranged long secondary stators (2) and a short primary rotor (1) which is installed between the long secondary stators (2) and can do reciprocating motion, and gaps (3) are formed between the short primary rotor (1) and the long secondary stators (2) at the two sides. The short primary rotor (1) comprises a primary iron core (11) and an armature winding (12), tooth groove structures are arranged at the two sides, close to the long secondary stator surfaces (21), of the primary iron core (11), and the armature winding (12) is arranged in the tooth groove structures. Compared with the prior art, the motor has the advantages of high efficiency, low cost, high thrust density, low torque pulsation, wide speed regulation range and the like.

Description

technical field [0001] The invention relates to the technical field of motor body design and manufacture, in particular to a bilateral short-primary synchronous reluctance linear motor. Background technique [0002] Linear motor is a typical electromechanical energy conversion device that directly converts electrical energy into linear motion mechanical energy. It has the advantages of saving intermediate structures, no wear, low noise, fast response speed, and high energy transfer efficiency. It has been widely used in various scenarios that need to directly generate thrust, such as transportation, military, aerospace, and industrial automation. [0003] The existing linear motor technologies mainly include: linear induction motor, permanent magnet linear motor, and switched reluctance linear motor. Among them, the linear induction motor is widely used in the field of urban rail transit. However, due to its end effect and low efficiency and power factor, the speed regulati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/03H02K1/26H02K3/12H02K3/28H02K1/17
CPCH02K41/031H02K1/265H02K3/12H02K3/28H02K1/17H02K2201/03
Inventor 任林杰廖志明赵元哲孙彦林国斌王欢
Owner TONGJI UNIV
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