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Modular primary permanent magnet bilateral switched reluctance linear motor

A technology of switched reluctance and linear motors, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problems of low thrust density, limited application, large thrust fluctuations, etc., and achieve reduced thrust fluctuations, high power density, and elimination of Effect of Thrust Harmonics

Pending Publication Date: 2019-07-12
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional switched reluctance linear motors still have problems such as low thrust density and large thrust fluctuations, which limit their application in elevators and other vertical lifting fields.

Method used

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  • Modular primary permanent magnet bilateral switched reluctance linear motor
  • Modular primary permanent magnet bilateral switched reluctance linear motor
  • Modular primary permanent magnet bilateral switched reluctance linear motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A modular primary permanent magnet bilateral switched reluctance linear motor of the present invention is shown in figure 1 , including a primary 11 and a secondary 10, and an air gap exists between the primary 11 and the secondary 10. The secondary 10 is composed of a secondary module 100, the primary 11 is composed of a primary module 110, and each of the primary modules 110 includes two magnetic permeable blocks 111, an armature winding 112, and a wire between the magnetic permeable blocks 111. Permanent magnets 113 distributed up and down. The armature windings 112 in the same primary module 110 have opposite winding directions and belong to the same phase; the permanent magnets 113 are magnetized horizontally, and the magnetization directions of the permanent magnets 113 corresponding to adjacent primary modules 110 are the same, and belong to the same primary module 110 The magnetization directions of the corresponding permanent magnets 113 up and down are opposi...

Embodiment 2

[0053] Another step ratio of a modular primary permanent magnet bilateral switched reluctance linear motor of the present invention, see figure 2 , including a primary 11 and a secondary 10, and an air gap exists between the primary 11 and the secondary 10. The secondary 10 is composed of a secondary module 100, the primary 11 is composed of a primary module 110, and each of the primary modules 110 includes two magnetic permeable blocks 111, an armature winding 112, and a wire between the magnetic permeable blocks 111. Permanent magnets 113 distributed up and down. The armature windings 112 in the same primary module 110 have opposite winding directions and belong to the same phase; the permanent magnets 113 are magnetized horizontally, and the magnetization directions of the permanent magnets 113 corresponding to adjacent primary modules 110 are the same, and belong to the same primary module 110 The magnetization directions of the corresponding permanent magnets 113 up and...

Embodiment 3

[0059] A modular primary permanent magnet bilateral switched reluctance linear motor of the present invention, see image 3 , is a motor with a complementary structure, including a primary 11 and a secondary 10, and there is an air gap between the primary 11 and the secondary 10. The secondary 10 is composed of a secondary module 100, the primary 11 is composed of a primary module 110, and each of the primary modules 110 includes two magnetic permeable blocks 111, an armature winding 112, and a wire between the magnetic permeable blocks 111. Permanent magnets 113 distributed up and down. The armature windings 112 in the same primary module 110 have opposite winding directions and belong to the same phase; the permanent magnets 113 are magnetized horizontally, and the magnetization directions of the permanent magnets 113 corresponding to adjacent primary modules 110 are the same, and belong to the same primary module 110 The magnetization directions of the corresponding perman...

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Abstract

The invention discloses a modular primary permanent magnet bilateral switched reluctance linear motor. The primary side of the motor is modularized. Each primary module is composed of a magnetically permeable material, an armature winding and permanent magnets distributed in the vertical direction between two magnetic conducting blocks. The secondary side is composed of a magnetically permeable material. The permanent magnets are magnetized in parallel. The permanent magnets corresponding to the adjacent primary modules have the same magnetization direction. The upper and lower corresponding permanent magnets belonging to the same primary module have opposite magnetization directions. In a no-load state, a permanent magnet magnetic circuit is short-circuited by the primary magnetic conducting blocks, and the magnetic force lines hardly pass through an air gap and the secondary side, which reduces the positioning force. In a loaded state, a series magnetic circuit is formed between theprimary magnetic conducting blocks and the bilateral secondary side to generate electromagnetic force. In addition, the modular primary permanent magnet bilateral switched reluctance linear motor hasa simple secondary-side structure and large thrust density, and the permanent magnets are placed in the short primary side to reduce the cost of the motor. The modular primary permanent magnet bilateral switched reluctance linear motor can be applied to long secondary-side occasions such as an elevator driving system.

Description

technical field [0001] The invention relates to a modularized primary permanent magnet bilateral switched reluctance linear motor, which belongs to the technical field of motor manufacturing. Background technique [0002] With the development of industry, linear motors are more and more widely used in various occasions. In the fields of rail transportation, vertical lift and other fields, traditional rotating motors need to rely on mechanical transmission devices, resulting in low efficiency. Compared with rotating motors, linear motor drive systems directly generate electromagnetic force, which has the advantages of high power density, small size, and low noise. . Therefore, the technology of replacing rotary motors with linear motors can overcome the above-mentioned shortcomings of rotary motors in the above-mentioned applications, improve the efficiency of the entire system, and have bright application prospects in rail transportation, vertical lifting and other fields. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/03
CPCH02K41/033H02K2213/03
Inventor 曹瑞武沈丹妮陆鸣航
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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