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Double-salient-pole permanent magnet linear motor and motor module group using same

A technology of permanent magnet linear motor and doubly salient poles, which is applied in the direction of electric components, electrical components, electromechanical devices, etc. It can solve the problems of permanent magnet magnetic flux leakage and weakening motor output capacity, etc., and achieves large thrust, simple and reliable structure, and thrust fluctuation small effect

Inactive Publication Date: 2015-10-07
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing mover permanent magnet linear motors have a single stator structure, and the permanent magnet on the mover has serious magnetic flux leakage, which weakens the output capacity of the motor

Method used

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  • Double-salient-pole permanent magnet linear motor and motor module group using same

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Embodiment Construction

[0012] In order to illustrate the structural features and operating principles of the present invention, a three-phase motor is taken as an example below.

[0013] Such as figure 1 As shown, the doubly salient permanent magnet linear motor provided by the present invention ( τ m =8 / 12* τ s ), including a mover 1 and a stator 2, both of which are salient pole structures with an air gap between them. There are neither permanent magnets nor armature windings on the stator 2, but are only composed of magnetically permeable materials. The upper and lower stators 2 are staggered by half the stator pole pitch ( τ s / 2) displacement. The mover 1 includes two mover modules 10. The relative displacement between the two mover modules 10 is lambda = 2.5* τ s . The mover module 10 includes an iron core 3 , a permanent magnet 4 and an armature winding 5 . A permanent magnet 4 is sandwiched between the iron cores 3 of the mover module 10 . The magnetization direction of the ...

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Abstract

The invention relates to an internal heat radiation composite magnetic flux switching permanent magnet motor including two stators, two rotors, armature windings, permanent magnets, a magnet insulation ring, and radiating holes. In one aspect, internal and external rotors don't have permanent magnets and any excitation windings, so that the motor has the characteristic of firm structure; and in another aspect, the two rotors are provided with the permanent magnets and the armature windings and are connected through the magnet insulation ring, and the heat of the motor can be radiated from the inside through the radiating holes. A permanent magnet magnetic flux switching motor is kept in structure, the advantages of good robustness and high speed running can be achieved. The heat radiation of the side of the motor can be realized without additionally increasing the size of the motor, so that the motor can be high in reliability and good in overloading capability, and is suitable for the conditions requiring small size and high reliability and having bad heat radiation.

Description

technical field [0001] The invention relates to the technical field of motor manufacture, and in particular to a double salient pole permanent magnet linear motor. Background technique [0002] The motor is the main part of the transmission system. It is very important to select the appropriate motor type according to different applications to improve the performance and efficiency of the entire system. In linear drive applications, traditional rotary motors require a certain intermediate conversion device to convert rotary motion into linear motion. This brings many problems, for example, the system is bulky, the weight is increased, the noise is high, the maintenance cost is increased, and the reliability is reduced. In rail transit applications, if the rotating motor is used, the vehicle speed is too high and there will be problems such as wheel-rail slippage. . Therefore, the technical means of replacing the rotary motor with a linear motor can overcome the abo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/03
Inventor 程明张邦富孔龙涛王伟
Owner SOUTHEAST UNIV
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