CN104242596A - Asymmetric double-side type permanent magnet straight line synchronous motor - Google Patents
Asymmetric double-side type permanent magnet straight line synchronous motor Download PDFInfo
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- CN104242596A CN104242596A CN201410458966.XA CN201410458966A CN104242596A CN 104242596 A CN104242596 A CN 104242596A CN 201410458966 A CN201410458966 A CN 201410458966A CN 104242596 A CN104242596 A CN 104242596A
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Abstract
The invention discloses an asymmetric double-side type permanent magnet straight line synchronous motor which comprises a long stator and a short rotor. The short rotor comprises an armature and a magnetic pole which are arranged on a movable platform and are placed on the two sides of the long stator respectively. The magnetic pole is of a salient pole type structure or a non-salient pole type structure. The armature comprises an armature core and armature windings arranged on armature teeth in a sleeved mode. The magnetic pole comprises a magnetic pole iron core and a permanent magnet. The long stator is formed by a plurality of magnetism adjusting iron blocks which are arrayed in a straight line. The difference between the number of the armature teeth and the number of the magnetism adjusting iron blocks is 1-2. According to the motor, the armature and the magnetic pole are used as one side of the short rotor respectively, the advantage of a flux switching type structure is achieved, magnetic pole radiating difficulty is avoided effectively, the shortcoming that a magnetic circuit and an electric circuit compete is overcome, the using number of permanent magnets is greatly reduced, magnetic field adjusting capacity is improved, and system cost is lowered.
Description
Technical field
The invention belongs to synchronous machine technical field, be specifically related to a kind of asymmetric double-flanged end permanent magnet linear synchronous motor.
Background technology
Permanent magnet linear synchronous motor has the advantage of magneto and linear electric motors concurrently, electric energy is directly changed into rectilinear motion mechanical energy, do not need middle double-action part, not by centrifugal forces affect, there is the remarkable advantages such as structure is simple, lightweight, volume is little, high-speed, high precision, high efficiency, high thrust, in High Speed NC Machine Tools, semiconductor machining, vertical lift conveying system, be used widely in the fields such as high-speed ground transport system.Double-flanged end structure permanent magnet linear synchronous motor can be regarded two single side type structure permanent magnet linear synchronous motors as and form back-to-back, its thrust is one times of single side type structure, and the volume weight permanent magnet linear synchronous motor monolateral relative to two can obviously reduce, and substantially there is not Normal Force; A kind of typical double-flanged end permanent magnet linear synchronous motor structure as shown in Figure 1.
The operation principle of permanent magnet linear synchronous motor is as described below: when armature winding passes into alternating current, just in air gap, produce armature field.Meanwhile, magnetic pole permanent magnet produces excitation field.Described armature field and permanent magnet excitation magnetic field are synthesized and are formed air-gap field.Drag magnetic pole or armature during starting, armature travelling-magnetic-field and permanent magnet excitation magnetic field geo-stationary, thus the electric current in armature winding produces electromagnetic push under the effect of described air-gap field.If armature is fixed, then magnetic pole pulls in and does rectilinear motion under thrust; Otherwise then armature pulls in and does rectilinear motion.
The restriction that permanent magnet linear synchronous motor is applied is cost, because no matter be adopt long armature, or the structure of long magnetic pole, holistic cost is all very high.In order to reduce costs, existing way adopts switch flux-linkage permanent magnet linear synchronous motor, and permanent magnet is placed on armature, its permanent magnet consumption is less, and armature length is not long yet, and cost reduces greatly, but also bring new problem: be that permanent magnet is surrounded by coil on the one hand, radiating condition is too poor; Groove area and permanent magnet condition each other on the other hand, and pushing force density is restricted, and armature is made up of multiple discrete parts, processes more difficult.
Summary of the invention
For the above-mentioned technical problem existing for prior art, the invention provides a kind of asymmetric double-flanged end permanent magnet linear synchronous motor, can either make permanent magnet and armature separate, the consumption of permanent magnet and the length of armature can be reduced again.
A kind of asymmetric double-flanged end permanent magnet linear synchronous motor, comprises long stator and short mover;
Described short mover comprises to be located on mobile platform and to lay respectively at armature and the magnetic pole of long stator both sides, possesses certain air gap between both and long stator; Described armature be dentalation and armature teeth portion towards long stator, described magnetic pole is salient pole type structure or hidden pole type structure;
Described armature comprises armature core and is sheathed on the armature winding on armature tooth;
If described magnetic pole is salient pole type structure, then it is arranged alternately by some pole cores and some permanent magnets and forms, and the magnetizing direction of permanent magnet is consistent with the direction of motion of short mover;
If described magnetic pole is hidden pole type structure, then it is made up of the pole core and being attached on pole core and towards the some compact arranged permanent magnet of long stator of a long strip type, and the magnetizing direction of permanent magnet is vertical with the direction of motion of short mover;
Described long stator is arranged in a linear by multiple adjustable magnetic iron block and forms; The described armature number of teeth differs 1 ~ 2 with the number of adjustable magnetic iron block.
Described magnetic pole is salient pole type structure, then the permanent magnet number of magnetic pole equals the armature number of teeth, and the center line of each permanent magnet aligns with the center line of corresponding armature tooth or armature slot.
Described magnetic pole is hidden pole type structure, then the permanent magnet number of magnetic pole is the twice of the armature number of teeth, and the center line of each armature tooth and armature slot aligns with the center line of corresponding permanent magnet, or the center line between the center line of each armature tooth with corresponding two permanent magnets aligns.
No matter magnetic pole is salient pole type structure or hidden pole type structure, and the permanent magnet in magnetic pole is N pole and S pole and is alternately arranged.
Described long stator adopts between isolating construction and adjacent two adjustable magnetic iron blocks and fills to realize fixing by injecting non-magnet material.
Preferably, described long stator adopts continuous structure, is namely interconnected by ferromagnetic magnetic bridge between adjustable magnetic iron block, then is fixed by stay bolt; The technique that processing is installed can be simplified.
The full-depth tooth winding construction that described armature winding adopts end non-overlapped or half tooth winding construction, namely the coil number of each armature slot is 1 ~ 2.
The short mover of motor of the present invention is bilateral dissymmetrical structure, while be armature, another side is magnetic pole, both be fixed on mobile platform, mobile platform can be driven to realize rectilinear motion, but both be separate again, be in the different edge of mover respectively, both achieve the advantage of magnetic flux suitching type structure, also effectively prevent magnetic pole heat radiation difficulty, the shortcoming that magnetic circuit & circuit is vied each other; Therefore the Advantageous Effects of hinge structure of the present invention is as follows:
(1) the present invention's asymmetric double-flanged end permanent magnet linear synchronous motor is armature and the magnetic pole side respectively as short mover, thus not only substantially reduce the consumption of permanent magnet, and do not affect the radiating condition of permanent magnet, be applicable to the application scenario needing Long travel low-speed high-thrust such as industrial, civilian, medical, as Digit Control Machine Tool, long distance handling and conveying line etc.
(2) long stator of the present invention is only made up of adjustable magnetic iron block, and cost is low, is easy to realize modularization.
(3) armature of the present invention is identical with common permanent-magnetism linear motor with field structure, and easy to process, cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing common double-flanged end permanent magnet linear synchronous motor.
Fig. 2 is the first enforcement structural representation of motor of the present invention.
Fig. 3 is that the second of motor of the present invention implements structural representation.
Fig. 4 is the third enforcement structural representation of motor of the present invention.
Fig. 5 is that the 4th kind of motor of the present invention implements structural representation.
Fig. 6 is that the 5th kind of motor of the present invention implements structural representation.
Embodiment
In order to more specifically describe the present invention, below in conjunction with the drawings and the specific embodiments, technical scheme of the present invention is described in detail.
Embodiment one:
As shown in Figure 2, the asymmetric double-flanged end permanent magnet linear synchronous motor of the present embodiment, comprise long stator 1 and short mover 2, short mover 2 comprises armature 21, magnetic pole 22, mobile platform 23 and construction bolt 24, armature 21 comprises armature winding 211 and armature core 212, magnetic pole 22 comprises permanent magnet 221 and pole core 222 and to be alternately arranged composition, adjacent permanent magnet magnetizing direction is contrary, magnetizing direction is consistent with the direction of motion, armature 21 and magnetic pole 22 are all fixed on a mobile platform, both geo-stationary, all be fixed on below mobile platform 23 by construction bolt 24, and bilaterally all keep certain gas length with long stator 1.Short mover armature slot number is identical with the number of poles of permanent magnetism magnetic pole, and on position, permanent magnet aligns with armature tooth, and long stator adjustable magnetic iron block number differs 1 or differ 2 with short mover armature slot number.
Long stator 1 is made up of the adjustable magnetic iron block 11 of multiple separation, is placed on whole stroke, and adjustable magnetic iron block mid portion is filled non-magnet_conductible material and is fixed.
The present embodiment adopts the form of short mover, permanent magnet flux linkage on short mover, after long stator, enters in armature, with armature winding intersecting chain, obviously when short mover is different from long stator relative position, in armature winding, the magnetic linkage of interlinkage is changing, and produces close to sinusoidal back electromotive force in armature winding, therefore after passing into three phase sine voltage in armature winding, will produce corresponding three phase sine electric current, thus produce electromagnetic push, thrust mover realizes rectilinear motion.
The operation principle of asymmetric double-flanged end permanent magnet linear synchronous motor in the present embodiment: armature tooth aligns with permanent magnet in short mover, when armature tooth aligns with long stator adjustable magnetic iron block, the short circuit of permanent magnet magnetic chain warp adjustable magnetic iron block, armature winding magnetic linkage is zero; Along with mover moves, its magnetic linkage increases, and when aliging with adjustable magnetic iron block edge in armature tooth centre position, permanent magnet flux linkage all enters armature through adjustable magnetic iron block, with armature winding interlinkage, reaches maximum; Mover continues mobile, and magnetic linkage starts to reduce, and when armature tooth shifts out long stator adjustable magnetic iron block completely, armature tooth is just in time between two adjustable magnetic iron blocks, and permanent magnet flux linkage is by this two pieces of adjustable magnetic iron blocks short circuit, and armature interlinkage magnetic linkage reaches minimum value; Again along with mover moves, magnetic linkage increases in the other direction, and when movement is alignd with armature tooth again, be just in time the permanent magnet that opposite magnetic is contrary, permanent magnet flux linkage reaches minimum value, and obvious magnetic linkage is positive and negative alternation, is sinusoidal pattern substantially, is bipolarity magnetic linkage.
Embodiment two:
A kind of distressed structure of embodiment one shown in Fig. 3, be that the relative position of permanent magnet and armature is not identical with the difference of Fig. 2, in this enforcement structure, permanent magnet aligns with armature slot.
Embodiment three:
As shown in Figure 4, the feature of the present embodiment is: in magnetic pole 22, permanent magnet 221 is attached on pole core 222, places two pieces of permanent magnets, close-packed arrays under each armature tooth, and polarity is contrary, and magnetizing direction is perpendicular to the direction of motion, and adjacent permanent magnet magnetizing direction is contrary.
In the present embodiment, the operation principle of asymmetric double-flanged end permanent magnet linear synchronous motor is identical with embodiment one, and along with the change of rotor position, the positive and negative alternation of the magnetic linkage in armature winding is sinusoidal pattern substantially, is bipolarity magnetic linkage.
Embodiment four:
A kind of distressed structure of embodiment three shown in Fig. 5, be that the relative position of permanent magnet and armature is not identical with the difference of Fig. 4, in this enforcement structure, permanent magnet aligns with armature tooth (armature slot).
Embodiment five:
As shown in Figure 6, the present embodiment for be long stator structure, its main difference point is: the adjustable magnetic iron block in long stator adopts continuous structure, namely adjustable magnetic iron block is interconnected by ferromagnetic magnetic bridge, undertaken determining to fix by the stay bolt 13 in adjustable magnetic iron block again, advantage is simplified processing process, and shortcoming is reduction of pushing force density.
The foregoing is only the preferred embodiment of the present invention, protection scope of the present invention is not limited in above-mentioned execution mode, and every technical scheme belonging to the principle of the invention all belongs to protection scope of the present invention.For a person skilled in the art, some improvements and modifications of carrying out under the prerequisite not departing from principle of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. an asymmetric double-flanged end permanent magnet linear synchronous motor, comprises long stator and short mover; It is characterized in that:
Described short mover comprises to be located on mobile platform and to lay respectively at armature and the magnetic pole of long stator both sides, possesses certain air gap between both and long stator; Described armature be dentalation and armature teeth portion towards long stator, described magnetic pole is salient pole type structure or hidden pole type structure;
Described armature comprises armature core and is sheathed on the armature winding on armature tooth;
If described magnetic pole is salient pole type structure, then it is arranged alternately by some pole cores and some permanent magnets and forms, and the magnetizing direction of permanent magnet is consistent with the direction of motion of short mover;
If described magnetic pole is hidden pole type structure, then it is made up of the pole core and being attached on pole core and towards the some compact arranged permanent magnet of long stator of a long strip type, and the magnetizing direction of permanent magnet is vertical with the direction of motion of short mover;
Described long stator is arranged in a linear by multiple adjustable magnetic iron block and forms; The described armature number of teeth differs 1 ~ 2 with the number of adjustable magnetic iron block.
2. asymmetric double-flanged end permanent magnet linear synchronous motor according to claim 1, it is characterized in that: described magnetic pole is salient pole type structure, then the permanent magnet number of magnetic pole equals the armature number of teeth, and the center line of each permanent magnet aligns with the center line of corresponding armature tooth or armature slot.
3. asymmetric double-flanged end permanent magnet linear synchronous motor according to claim 1, it is characterized in that: described magnetic pole is hidden pole type structure, then the permanent magnet number of magnetic pole is the twice of the armature number of teeth, and the center line of each armature tooth and armature slot aligns with the center line of corresponding permanent magnet, or the center line between the center line of each armature tooth with corresponding two permanent magnets aligns.
4. asymmetric double-flanged end permanent magnet linear synchronous motor according to claim 1, is characterized in that: no matter magnetic pole is salient pole type structure or hidden pole type structure, and the permanent magnet in magnetic pole is N pole and S pole and is alternately arranged.
5. asymmetric double-flanged end permanent magnet linear synchronous motor according to claim 1, is characterized in that: described long stator adopts between isolating construction and adjacent two adjustable magnetic iron blocks and fills to realize fixing by injecting non-magnet material.
6. asymmetric double-flanged end permanent magnet linear synchronous motor according to claim 1, is characterized in that: described long stator adopts continuous structure, is namely interconnected by ferromagnetic magnetic bridge between adjustable magnetic iron block, then is fixed by stay bolt.
7. asymmetric double-flanged end permanent magnet linear synchronous motor according to claim 1, is characterized in that: the full-depth tooth winding construction that described armature winding adopts end non-overlapped or half tooth winding construction, namely the coil number of each armature slot is 1 ~ 2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410458966.XA CN104242596B (en) | 2014-09-11 | 2014-09-11 | A kind of asymmetric double-flanged end permanent magnet linear synchronous motor |
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| CN201410458966.XA CN104242596B (en) | 2014-09-11 | 2014-09-11 | A kind of asymmetric double-flanged end permanent magnet linear synchronous motor |
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| CN104578635A (en) * | 2015-01-09 | 2015-04-29 | 浙江大学 | Asymmetric double-stator cylindrical permanent magnet linear motor |
| CN105811809A (en) * | 2014-12-31 | 2016-07-27 | 上海微电子装备有限公司 | Maglev rotary motor |
| CN106230229A (en) * | 2016-09-14 | 2016-12-14 | 深圳德康威尔科技有限公司 | Compact bilateral flat board motor and the compact bilateral flat board motor of superimposed type |
| CN108155775A (en) * | 2018-01-19 | 2018-06-12 | 浙江大学 | A kind of double permanent magnetism mixing excitation switch magnetic linkage straight line motors of asymmetry double-flanged end |
| CN108512393A (en) * | 2018-05-17 | 2018-09-07 | 浙江大学 | A kind of novel four sides type linear motor |
| CN109842264A (en) * | 2017-11-24 | 2019-06-04 | 哈尔滨工业大学 | A kind of dual-side flat plate type permanent-magnetism linear motor |
| GB2576004A (en) * | 2018-07-31 | 2020-02-05 | Trw Ltd | An electromagnetic linear actuator |
| CN114614585A (en) * | 2022-03-24 | 2022-06-10 | 浙江大学 | Linear-rotary hybrid excitation low-speed generator |
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| CN1967980A (en) * | 2006-11-24 | 2007-05-23 | 沈阳工业大学 | Intersegmental dephasing asymmetric six-phase permanent-magnet linear servo-actuator |
| CN101552535B (en) * | 2009-05-19 | 2011-06-01 | 哈尔滨工业大学 | Cylinder type flux-reversal linear machine |
| CN201797432U (en) * | 2010-07-26 | 2011-04-13 | 东南大学 | Linear motor capable of increasing motor power density on application conditions of low speed and high thrust |
| CN101968025B (en) * | 2010-08-31 | 2012-09-19 | 东南大学 | Straight line wave power generator based on magnetic gear |
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| CN105811809A (en) * | 2014-12-31 | 2016-07-27 | 上海微电子装备有限公司 | Maglev rotary motor |
| CN105811809B (en) * | 2014-12-31 | 2018-03-02 | 上海微电子装备（集团）股份有限公司 | Magnetic floats electric rotating machine |
| CN104578635B (en) * | 2015-01-09 | 2017-04-12 | 浙江大学 | Asymmetric double-stator cylindrical permanent magnet linear motor |
| CN104578635A (en) * | 2015-01-09 | 2015-04-29 | 浙江大学 | Asymmetric double-stator cylindrical permanent magnet linear motor |
| CN106230229A (en) * | 2016-09-14 | 2016-12-14 | 深圳德康威尔科技有限公司 | Compact bilateral flat board motor and the compact bilateral flat board motor of superimposed type |
| CN109842264A (en) * | 2017-11-24 | 2019-06-04 | 哈尔滨工业大学 | A kind of dual-side flat plate type permanent-magnetism linear motor |
| CN108155775B (en) * | 2018-01-19 | 2020-05-08 | 浙江大学 | Asymmetric double-side double-permanent-magnet hybrid excitation switch flux linkage linear motor |
| CN108155775A (en) * | 2018-01-19 | 2018-06-12 | 浙江大学 | A kind of double permanent magnetism mixing excitation switch magnetic linkage straight line motors of asymmetry double-flanged end |
| CN108512393A (en) * | 2018-05-17 | 2018-09-07 | 浙江大学 | A kind of novel four sides type linear motor |
| GB2576004A (en) * | 2018-07-31 | 2020-02-05 | Trw Ltd | An electromagnetic linear actuator |
| US10910935B2 (en) | 2018-07-31 | 2021-02-02 | ZF Automotive UK Limited | Electromagnetic linear actuator |
| GB2576004B (en) * | 2018-07-31 | 2022-10-05 | Trw Ltd | An electromagnetic linear actuator |
| CN114614585A (en) * | 2022-03-24 | 2022-06-10 | 浙江大学 | Linear-rotary hybrid excitation low-speed generator |
| CN114614585B (en) * | 2022-03-24 | 2023-11-21 | 浙江大学 | Linear-rotary hybrid excitation low-speed generator |
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