CN103618429A - Permanent-magnet linear motor and motor module comprising same - Google Patents
Permanent-magnet linear motor and motor module comprising same Download PDFInfo
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- CN103618429A CN103618429A CN201310664996.1A CN201310664996A CN103618429A CN 103618429 A CN103618429 A CN 103618429A CN 201310664996 A CN201310664996 A CN 201310664996A CN 103618429 A CN103618429 A CN 103618429A
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- mover
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Abstract
The invention discloses a permanent-magnet linear motor and a motor module comprising the same. The permanent-magnet linear motor comprises a rotor and a stator. The rotor is in a salient-pole structure, the stator is in a segmentation salient-pole structure, and an air gap is formed between the salient-pole structure and the segmentation salient-pole structure. The rotor comprises three groups of magnetic conductive teeth, and both a permanent magnet and an armature winding are arranged on the rotor. A permanent magnet and a winding are not arranged on the stator, and the stator is only made of a magnet conductive material. The permanent magnet which is vertical to the stator plane is adhered on the tip of the first group of magnet conductive teeth on the rotor, the second group of magnet conductive teeth are wound on the armature winding, and the third group of magnet conductive teeth serves as end teeth which are not provided with the permanent magnet and are not wound on the armature winding. The first group of magnet conductive teeth and the second group of magnet conductive teeth are alternatively arranged, and the third group of magnet conductive teeth is arranged on two ends of the rotor. The motor has the advantages of simplicity and reliability in structure, high efficiency, large thrust force, good fault tolerance and the like. By adopting the segmentation structure of the stator, a stator module is easy to manufacture and low in cost. The motor is particularly applicable to the application field of a short-rotor long-stator structural linear motor.
Description
Technical field
The present invention relates to the manufacturing technology field of motor, and particularly relevant for a kind of stator-sectional, the permanent-magnetism linear motor of permanent magnet surfaces mounted type and the motor module that formed by it on mover.
Background technology
Motor is the critical piece of drive system, according to different application scenarios, selects applicable motor type all extremely important to performance and the efficiency of raising whole system.In linear drives application scenario, traditional certain intermediate conversion device of electric rotating machine needs will rotatablely move and be converted to rectilinear motion.Brought like this problems, such as, systems bulky, weight increases, and noise is high, and maintenance cost increases, and reliability reduces, and if in track traffic application, use electric rotating machine to drive, the too high problems such as wheel track slip that there will be of car speed.Therefore, adopt linear electric motors to replace this technological means of electric rotating machine, can overcome the above-mentioned shortcoming of electric rotating machine in this type of high-speed applications, improve the efficiency of whole system.
China is rare earth big country, and along with the development of power electronic technology and magnetic material, permanent magnet rotating electric machine is developed rapidly.This type of motor has that efficiency is high, power density is high, control the advantages such as easy.Its corresponding linear structure is also widely studied.Traditional permanent magnet linear synchronous motor has the two-fold advantage of magneto and linear electric motors concurrently.Compare with line inductance electromotor, permanent magnet linear synchronous motor efficiency is high, and power factor is high, lightweight, and has dynamic brake function.Yet because permanent magnet and the armature winding of traditional magneto is arranged on respectively primary and secondary, and the cost of permanent magnet and armature is all higher, in as long stator application scenarios such as track traffics, cause undoubtedly system cost to increase.
At present, in the world research relatively the mover permanent magnet type linear motor of focus be that to take the flux switch permanent magnet motor of bipolarity magnetic linkage be representative, this class motor has higher power density, its permanent magnet and armature winding are all placed on mover, stator is only magnetic conductive iron material, has power density high, simple in structure, be easy to heat radiation, the advantages such as high reliability.Therefore, this structural electromotor can reduce system cost in long stator application scenario.Yet its stator of mover permanent magnet type linear motor of this structure is that continuous permeability magnetic material is laid formation, higher such as its system costs of long stator application scenario such as track traffics.
Summary of the invention
In view of this, the motor module that the object of the present invention is to provide a kind of permanent-magnetism linear motor and formed by it, the stator of this motor is comprised of the magnetic conduction module of section, winding and permanent magnet are all on mover, have simple and reliable for structure, efficiency is high, the advantages such as thrust is larger, and zmodem and cost are low
The invention discloses a kind of permanent-magnetism linear motor.Permanent-magnetism linear motor comprises mover and stator.Mover is salient-pole structure, and stator is segmentation salient-pole structure, and has air gap between the two.Mover comprises three groups of magnetic teeth, and permanent magnet and armature winding are all on mover.On stator both without permanent magnet also without armature winding, be only that permeability magnetic material forms.On mover, the crown of first group of magnetic teeth posts permanent magnet, and its magnetizing direction is vertical with stator plane, and second group of magnetic teeth be around armature winding, the 3rd group of magnetic teeth be both without permanent magnet also not around the limit of armature winding end tooth.First group of magnetic teeth and second group of magnetic teeth distribute alternately, and the 3rd group of magnetic teeth is positioned at mover both sides end.
In the present invention, in first group of magnetic teeth, the permanent magnet magnetizing direction of adjacent crown is contrary.In second group of magnetic teeth, winding forms different phase windings by serial or parallel connection.First group of magnetic conduction facewidth W on mover
1, second group of magnetic conduction facewidth W
2, mover groove width W
othree equates.The 3rd group of magnetic conduction facewidth W
3can equate or unequal with other group facewidth.The length W of stator-sectional module
sequal W
1+ W
2+ W
o, be also 3*W
1.When m=1 or 2, stator-sectional intermodule is apart from λ
1equal W
1; When m=3, λ
1for (1+2/3) * W
1; M≤4 o'clock, λ
1for (1+4/m) * W
1, wherein m is number of motor phases.
In the present invention, it is high that the height of permanent magnet is less than mover groove, and this structure has guaranteed that permanent magnet height changes as required flexibly, improves motor performance, saves permanent magnet material, reduces system cost.
In the present invention, stator-sectional module is permeability magnetic material, and its outer side-lower top has chamfering α, and α gets 0 ° ~ 90 °.Due on stator both without permanent magnet also without winding, only by the lower permeability magnetic material module segmentation of price, formed, make the present invention be specially adapted to, as long stator application scenarios such as track traffic, high-rise building elevators, can greatly reduce the manufacturing cost of system.
In the present invention, described permanent-magnetism linear motor is monolateral slab construction, bilateral slab construction or cylinder type.And described permanent-magnetism linear motor is motor or generator.
The present invention also proposes a kind of motor module consisting of above-mentioned permanent-magnetism linear motor, comprises that k is positive integer by k described permanent-magnetism linear motor.Further, the individual described permanent-magnetism linear motor integral body in series of described k or separately control separately.
To sum up, the structural feature of the present invention causes it to have: stator-sectional modularized processing, the advantage such as Design of Permanent Magnet flexibly, back-emf is more sinusoidal, detent force is less, force oscillation is little, the magnetic flux density of air gap is large, thrust output is strong, power density is higher, efficiency is higher, technique is simple, long stator application scenario motor cost is low.The present invention is particularly suitable for long stator structure linear electric motors application scenario, and for example urban track traffic, factory's transportation drive apparatus, high-rise building elevator isoline drive occasion.
Accompanying drawing explanation
Figure 1 shows that the structural representation of stator-sectional mover surface-adhered type permanent-magnetism linear motor according to an embodiment of the invention.
Embodiment
For design feature of the present invention and operation logic are described, the three phase electric machine of take below illustrates as example.
As shown in Figure 1, permanent-magnetism linear motor 1 provided by the present invention is comprised of stator 10 and mover 11, has air gap between the two.As shown in the figure, stator 10 is segmentation salient-pole structure, and mover 11 all adopts salient-pole structure.Wherein, on stator 10 both without permanent magnet also without winding, be only permeability magnetic material, simple in structure and firm.
On mover 11, comprise three groups of magnetic teeth, i.e. 110, the second groups of magnetic teeth 111 of first group of magnetic teeth and the 3rd group of magnetic teeth 112.Magnetic teeth 110 and magnetic teeth 111 distribute alternately.Magnetic teeth 112 is in mover 11 both sides ends.Further, first group of magnetic teeth 110 increment posts permanent magnet 114, and magnetizing direction is perpendicular to stator plane, and adjacent magnetic teeth 110 increment permanent magnet magnetizing directions are contrary, and second group of magnetic teeth 111 is wound with armature winding 113.In the 3rd group of magnetic teeth 112 both without permanent magnet 114 also without armature winding 113.
First group of magnetic teeth 110 width W
1, second group of magnetic teeth 111 width W
2with width of rebate W
othree equates.The 3rd group of magnetic teeth 112 width W
3equal 1/2* W
1.
The thickness of first group of magnetic teeth 110 between cog permanent magnet can be adjusted according to real electrical machinery performance requirement, thereby reaches performance the best, the lower-cost requirement of permanent magnetic material.
In the present embodiment, permanent-magnetism linear motor 1 each phase winding is composed in series by two armature winding 113 in second group of magnetic teeth 111.A phase winding is composed in series by A1 and A2 coil, and B phase winding is composed in series by B1 and B2 coil, and C phase winding is composed in series by C1 and C2 coil.
The length W of stator 10 segmentation modules
sequal W
1+ W
2+ W
o, i.e. 3*W
1.In the present embodiment, be three phase electric machine, i.e. m=3, stator-sectional intermodule is apart from λ
1for (1+2/3) * W
1.The outer side-lower break corner α of stator-sectional module, α is value within the scope of 0 ° ~ 90 °.Under the prerequisite that does not affect motor performance, optimize α, reduce stator 10 volumes, save motor manufacturing cost.
Described in the present invention, concrete case study on implementation is only better case study on implementation of the present invention, is not used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application the scope of the claims change and modify, all should be as technology category of the present invention.
Claims (10)
1. a permanent-magnetism linear motor, comprise mover and stator, described mover is salient-pole structure, stator is segmentation salient-pole structure, and has air gap between the two, it is characterized in that, described mover comprises three groups of magnetic teeth, permanent magnet and armature winding all in mover magnetic teeth, on stator both without permanent magnet also without winding, be only that permeability magnetic material forms; Wherein on mover, the crown of first group of magnetic teeth posts magnetizing direction perpendicular to the permanent magnet of stator plane, and second group of magnetic teeth be around armature winding, the 3rd group of magnetic teeth be both without permanent magnet also not around the limit of armature winding end tooth.
2. permanent-magnetism linear motor according to claim 1, is characterized in that, first group of magnetic teeth and second group of magnetic teeth distribute alternately, and the 3rd group of magnetic teeth is positioned at mover both sides end.
3. permanent-magnetism linear motor according to claim 1, is characterized in that, in first group of magnetic teeth, the permanent magnet magnetizing direction of adjacent crown is contrary, and in second group of magnetic teeth, winding forms different phase windings by serial or parallel connection.
4. permanent-magnetism linear motor according to claim 1, is characterized in that, first group of magnetic conduction facewidth W on mover
1, second group of magnetic conduction facewidth W
2, mover groove width W
othree equates, the 3rd group of magnetic conduction facewidth W
3can equate or unequal the length W of stator-sectional module with other group facewidth
sequal W
1+ W
2+ W
o, i.e. 3*W
1, when m=1 or 2, stator-sectional intermodule is apart from λ
1equal W
1; When m=3, λ
1for (1+2/3) * W
1; M≤4 o'clock, λ
1for (1+4/m) * W
1, wherein m is number of motor phases.
5. permanent-magnetism linear motor according to claim 1, is characterized in that, it is high that the height of described permanent magnet is less than mover groove.
6. permanent-magnetism linear motor according to claim 1, is characterized in that, the outer side-lower top of described section stator has chamfering α, and α gets 0 ° ~ 90 °.
7. permanent-magnetism linear motor according to claim 1, is characterized in that, described permanent-magnetism linear motor is monolateral slab construction, bilateral slab construction or cylinder type.
8. permanent-magnetism linear motor according to claim 1, is characterized in that, described permanent-magnetism linear motor is motor or generator.
9. by the claim 1-8 motor module that wherein permanent-magnetism linear motor described in any one forms, it is characterized in that, comprise that k is positive integer by k described permanent-magnetism linear motor.
10. motor module according to claim 9, is characterized in that, the individual described permanent-magnetism linear motor integral body in series of described k or separately control separately.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310664996.1A CN103618429A (en) | 2013-12-09 | 2013-12-09 | Permanent-magnet linear motor and motor module comprising same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310664996.1A CN103618429A (en) | 2013-12-09 | 2013-12-09 | Permanent-magnet linear motor and motor module comprising same |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935148A (en) * | 2015-07-06 | 2015-09-23 | 东南大学 | A magnetic-flux reverse direction type permanent magnet linear motor and a motor module group comprising same |
| CN106464118A (en) * | 2014-05-21 | 2017-02-22 | 株式会社日立制作所 | Linear motor and apparatus mounted with linear motor |
| JP2018500873A (en) * | 2014-12-30 | 2018-01-11 | シャンハイ マイクロ エレクトロニクス イクイプメント（グループ）カンパニー リミティド | 6 degrees of freedom linear motor |
| CN109842220A (en) * | 2017-11-24 | 2019-06-04 | 哈尔滨工业大学 | A kind of outer rotor flux switch permanent magnet motor |
| CN109962598A (en) * | 2019-04-26 | 2019-07-02 | 南京航空航天大学 | A kind of segmented secondary formula magnetic circuit complementary type primary permanent magnet linear |
| CN114362472A (en) * | 2021-12-28 | 2022-04-15 | 中国人民解放军海军工程大学 | Segmented splicing modular motor with intersegment magnetic field compensation winding and splicing compensation method thereof |
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| CN1585242A (en) * | 2004-05-28 | 2005-02-23 | 上海磁浮交通工程技术研究中心 | Linear synchronous motor with slender stator and with permanent magnetic and electric excitations alternatively |
| CN101499707A (en) * | 2009-02-23 | 2009-08-05 | 东南大学 | Primary permanent magnet type linear motor for urban railway traffic |
| CN201656740U (en) * | 2010-05-12 | 2010-11-24 | 东南大学 | Complementary type magnetic flux switching permanent magnet linear motor and motor module comprising same |
| CN103051148A (en) * | 2012-12-13 | 2013-04-17 | 东南大学 | Modular primary permanent magnetic linear motor and motor module consisting of same |
| CN103151859A (en) * | 2013-02-01 | 2013-06-12 | 东南大学 | Magnetic flow switched and surface-mounted type permanent magnet memory motor |
| CN203071787U (en) * | 2012-08-30 | 2013-07-17 | 江苏大学 | Single-magnetic-pole flux-reversal permanent magnet linear motor |
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2013
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| CN1585242A (en) * | 2004-05-28 | 2005-02-23 | 上海磁浮交通工程技术研究中心 | Linear synchronous motor with slender stator and with permanent magnetic and electric excitations alternatively |
| CN101499707A (en) * | 2009-02-23 | 2009-08-05 | 东南大学 | Primary permanent magnet type linear motor for urban railway traffic |
| CN201656740U (en) * | 2010-05-12 | 2010-11-24 | 东南大学 | Complementary type magnetic flux switching permanent magnet linear motor and motor module comprising same |
| CN203071787U (en) * | 2012-08-30 | 2013-07-17 | 江苏大学 | Single-magnetic-pole flux-reversal permanent magnet linear motor |
| CN103051148A (en) * | 2012-12-13 | 2013-04-17 | 东南大学 | Modular primary permanent magnetic linear motor and motor module consisting of same |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106464118A (en) * | 2014-05-21 | 2017-02-22 | 株式会社日立制作所 | Linear motor and apparatus mounted with linear motor |
| CN106464118B (en) * | 2014-05-21 | 2019-05-17 | 株式会社日立制作所 | Linear motor and equipment equipped with linear motor |
| JP2018500873A (en) * | 2014-12-30 | 2018-01-11 | シャンハイ マイクロ エレクトロニクス イクイプメント（グループ）カンパニー リミティド | 6 degrees of freedom linear motor |
| CN104935148A (en) * | 2015-07-06 | 2015-09-23 | 东南大学 | A magnetic-flux reverse direction type permanent magnet linear motor and a motor module group comprising same |
| CN109842220A (en) * | 2017-11-24 | 2019-06-04 | 哈尔滨工业大学 | A kind of outer rotor flux switch permanent magnet motor |
| CN109962598A (en) * | 2019-04-26 | 2019-07-02 | 南京航空航天大学 | A kind of segmented secondary formula magnetic circuit complementary type primary permanent magnet linear |
| CN114362472A (en) * | 2021-12-28 | 2022-04-15 | 中国人民解放军海军工程大学 | Segmented splicing modular motor with intersegment magnetic field compensation winding and splicing compensation method thereof |
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Application publication date: 20140305 |