CN104242596B - A kind of asymmetric double-flanged end permanent magnet linear synchronous motor - Google Patents
A kind of asymmetric double-flanged end permanent magnet linear synchronous motor Download PDFInfo
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Abstract
The invention discloses a kind of asymmetric double-flanged end permanent magnet linear synchronous motor, including long stator and short mover；Short mover includes armature and the magnetic pole being located on mobile platform and laying respectively at long stator both sides, and magnetic pole is salient pole type structure or hidden pole type structure, and armature includes armature core and the armature winding being sheathed on armature tooth；Magnetic pole is made up of pole core and permanent magnet, and long stator is arranged in a linear by multiple adjustable magnetic iron blocks and forms；The described armature number of teeth differs 1～2 with the number of adjustable magnetic iron block.Motor of the present invention respectively as the side of short mover, the advantage both having achieved magnetic flux suitching type structure, also effectively prevent magnetic pole heat radiation difficulty, the shortcoming that magnetic circuit and circuit are vied each other armature and magnetic pole；Not only substantially reduce the consumption of permanent magnet, improve flux control ability, also reduce system cost.
Description
Technical field
The invention belongs to synchronous motor technical field, be specifically related to a kind of asymmetric double-flanged end permanent-magnet linear and synchronize
Motor.
Background technology
Permanent magnet linear synchronous motor has the advantage of magneto and linear electric motors concurrently, is directly changed into by electric energy
Linear motion mechanical energy, it is not necessary to middle double-action part, not by centrifugal forces affect, has simple in construction, weight
The remarkable advantages such as amount is light, volume little, high-speed, high precision, high efficiency, high thrust, High Speed NC Machine Tools,
Semiconductor machining, vertical lift induction system, be used widely in the field such as high-speed ground transport system.Double
Limit type structure permanent magnet linear synchronous motor can regard two single side type structure permanent magnet linear synchronous motor back ofs the body as
Backrest forms, and its thrust is a times of single side type structure, and the volume weight permanent magnetism monolateral relative to two is straight
Line locking motor can obviously reduce, and is substantially not present Normal Force；A kind of typical double-flanged end permanent magnetism is straight
Line locking electric machine structure is as shown in Figure 1.
The operation principle of permanent magnet linear synchronous motor is as described below: when armature winding is passed through alternating current, just
Armature field is produced in air gap.Meanwhile, magnetic pole permanent magnet produces excitation field.Described armature field is with forever
The synthesis of magnet excitation magnetic field constitutes air-gap field.Magnetic pole or armature is dragged, armature travelling-magnetic-field and forever during starting
Magnet excitation magnetic field geo-stationary, thus the electric current in armature winding produces under the effect of described air-gap field
Electromagnetic push.If armature is fixed, then magnetic pole pulls under thrust and moves along a straight line；Otherwise,
Then armature pulls in and moves along a straight line.
The restriction of permanent magnet linear synchronous motor popularization and application is cost, because no matter being to use long armature,
Or the structure of long magnetic pole, holistic cost is the highest.In order to reduce cost, existing way is to use switch magnetic
Chain permanent magnet linear synchronous motor, is placed on permanent magnet on armature, and its permanent magnet consumption is less, armature length
The longest, cost is substantially reduced, but also brings new problem: is on the one hand that permanent magnet is surrounded by coil, dissipates
Heat condition is the poorest；On the other hand groove area conditions each other with permanent magnet, and pushing force density is restricted, armature
It 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 forever
Magnetic linear synchronous generator, can either make permanent magnet separate with armature, can reduce again permanent magnet consumption and
The length of armature.
A kind of asymmetric double-flanged end permanent magnet linear synchronous motor, including long stator and short mover；
Described short mover includes armature and the magnetic pole being located on mobile platform and laying respectively at long stator both sides,
Certain air gap is possessed between both and long stator；Described armature is that dentalation and armature teeth portion are towards length
Stator, described magnetic pole is salient pole type structure or hidden pole type structure；
Described armature includes armature core and the armature winding being sheathed on armature tooth；
If described magnetic pole is salient pole type structure, then it is arranged in replacing by some pole cores and some permanent magnets
Row composition, 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 by the pole core of a long strip type and is attached at magnetic pole
Forming on iron core and towards the some compact arranged permanent magnet of long stator, and the magnetizing direction of permanent magnet is with short
The direction of motion of mover is vertical；
Described long stator is arranged in a linear by multiple adjustable magnetic iron blocks and forms；The described armature number of teeth and adjustable magnetic ferrum
The number of block differs 1～2.
Described magnetic pole is salient pole type structure, then the permanent magnet number of magnetic pole be equal to the armature number of teeth, and each forever
The centrage of magnet aligns with the centrage of corresponding armature tooth or armature slot.
Described magnetic pole is hidden pole type structure, then the twice that permanent magnet number is the armature number of teeth of magnetic pole, and often
The centrage of individual armature tooth and armature slot aligns with the centrage of corresponding permanent magnet, or the center of each armature tooth
Centrage between line 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 hands over
For arrangement.
Described long stator is used and is filled out by injection non-magnet material between the most adjacent two the adjustable magnetic iron blocks of isolating construction
It is filled with realization fixing.
Preferably, described long stator uses and is interconnected mutually by ferromagnetic magnetic bridge between continuous structure, i.e. adjustable magnetic iron block
Connect, then fixed by stay bolt；The technique that processing is installed can be simplified.
Described armature winding uses the non-overlapped full tooth winding construction in end or Half-gear winding structure, the most each
The coil number of armature slot is 1～2.
The short mover of motor of the present invention is bilateral dissymmetrical structure, is armature, and another side is magnetic pole, two
Person is fixed on mobile platform, mobile platform can be driven to realize linear motion, but both are the most separate,
It is respectively at the different edge of mover, the advantage both having achieved magnetic flux suitching type structure, also effectively prevent magnetic pole
Heat radiation difficulty, the shortcoming that magnetic circuit and circuit are vied each other；Therefore the Advantageous of hinge structure of the present invention effect
Fruit is as follows:
(1) present invention asymmetric double-flanged end permanent magnet linear synchronous motor armature and magnetic pole respectively as short mover
Side, 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,
Distance handling and conveying line etc..
(2) long stator of the present invention is only made up of adjustable magnetic iron block, low cost, it is easy to accomplish modularity.
(3) armature of the present invention is identical with common permanent-magnetism linear motor with field structure, easy to process, low cost.
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 the 4th kind of enforcement structural representation of motor of the present invention.
Fig. 6 is the 5th kind of enforcement structural representation of motor of the present invention.
Detailed description of the invention
In order to more specifically describe the present invention, below in conjunction with the accompanying drawings and the detailed description of the invention skill to the present invention
Art scheme is described in detail.
Embodiment one:
As in figure 2 it is shown, the asymmetric double-flanged end permanent magnet linear synchronous motor of the present embodiment, including long stator 1
With short mover 2, short mover 2 includes armature 21, magnetic pole 22, mobile platform 23 and installs bolt 24, electricity
Pivot 21 includes armature winding 211 and armature core 212, and magnetic pole 22 includes permanent magnet 221 and pole core
222 alternately arranged compositions, adjacent permanent magnet magnetizing direction is contrary, and magnetizing direction is consistent with the direction of motion, armature
21 all fix on a mobile platform with magnetic pole 22, both geo-stationary, are all fixed on by installation bolt 24
Below mobile platform 23, and bilateral all keep certain gas length with long stator 1.Short mover armature slot number
Identical with the number of poles of permanent magnetism magnetic pole, on position, permanent magnet aligns with armature tooth, and long stator adjustable magnetic iron block number is with short
Mover armature slot number difference 1 or difference 2.
Long stator 1 is made up of the adjustable magnetic iron block 11 of multiple separation, is placed on whole stroke, in adjustable magnetic iron block
Between be partially filled with non-magnet_conductible material and be fixed.
The present embodiment uses the form of short mover, the permanent magnet flux linkage on short mover, after long stator, enters
Enter in armature, with armature winding intersecting chain, it is clear that when short mover and long stator are different relative to position, armature
In winding, the magnetic linkage of interlinkage is changing, and produces close to sinusoidal counter electromotive force, therefore in armature winding
After being passed through three phase sine voltage in armature winding, corresponding three phase sine electric current will be produced, thus produce
Electromagnetic push, thrust mover realizes linear motion.
The operation principle of asymmetric double-flanged end permanent magnet linear synchronous motor in the present embodiment: armature tooth in short mover
Aliging with permanent magnet, when armature tooth aligns with long stator adjustable magnetic iron block, permanent magnet magnetic chain warp adjustable magnetic iron block is short
Road, armature winding magnetic linkage is zero；Along with mover moves, its magnetic linkage increases, when armature tooth centre position and tune
During the alignment of magnet piece edge, permanent magnet flux linkage fully enters armature through adjustable magnetic iron block, interlinks with armature winding,
Reach maximum；Mover continues to move to, and magnetic linkage starts to reduce, when armature tooth is fully removed long stator adjustable magnetic ferrum
During block, armature tooth is exactly between two adjustable magnetic iron blocks, and permanent magnet flux linkage is short-circuit by these two pieces of adjustable magnetic iron blocks,
Armature interlinkage magnetic linkage minimizes value；Moving along with mover, magnetic linkage opposite direction increases again, when mobile again with electricity
During armature tooth alignment, the permanent magnet that exactly opposite magnetic is contrary, permanent magnet flux linkage minimizes value, it is clear that magnetic
Chain is positive and negative alternation, essentially sinusoidal pattern, is bipolarity magnetic linkage.
Embodiment two:
A kind of distressed structure of embodiment one shown in Fig. 3, is permanent magnet and electricity with the difference of Fig. 2
The relative position of pivot differs, and 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 to pole core 222
On, place two pieces of permanent magnets, close-packed arrays, opposite polarity under each armature tooth, magnetizing direction is perpendicular to fortune
Dynamic direction, adjacent permanent magnet magnetizing direction is contrary.
In the present embodiment the operation principle of asymmetric double-flanged end permanent magnet linear synchronous motor with embodiment one identical,
Along with the change of rotor position, the positive and negative alternation of magnetic linkage in armature winding, essentially sinusoidal pattern, is bipolarity
Magnetic linkage.
Embodiment four:
A kind of distressed structure of embodiment three shown in Fig. 5, is permanent magnet and electricity with the difference of Fig. 4
The relative position of pivot differs, and in this enforcement structure, permanent magnet aligns with armature tooth (armature slot).
Embodiment five:
As shown in Figure 6, the present embodiment is directed to long stator structure, and its main difference is: in long stator
Adjustable magnetic iron block use continuous structure, i.e. adjustable magnetic iron block to be connected with each other by ferromagnetic magnetic bridge, then by adjustable magnetic ferrum
Stay bolt 13 in block is determined fixing, and advantage is simplified processing process, and it is close that shortcoming is reduction of thrust
Degree.
The foregoing is only the preferred embodiment of the present invention, protection scope of the present invention is not limited in above-mentioned
Embodiment, every technical scheme belonging to the principle of the invention belongs to protection scope of the present invention.For this
For the technical staff in field, the some improvements and modifications carried out on the premise of without departing from the principle of the present invention,
These improvements and modifications also should be regarded as protection scope of the present invention.
Claims (6)
1. an asymmetric double-flanged end permanent magnet linear synchronous motor, including long stator and short mover；Its feature exists
In:
Described short mover includes armature and the magnetic pole being located on mobile platform and laying respectively at long stator both sides,
Certain air gap is possessed between both and long stator；Described armature is that dentalation and armature teeth portion are towards length
Stator, described magnetic pole is salient pole type structure or hidden pole type structure；
Described armature includes armature core and the armature winding being sheathed on armature tooth；
If described magnetic pole is salient pole type structure, then it is arranged in replacing by some pole cores and some permanent magnets
Row composition, 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 by the pole core of a long strip type and is attached at magnetic pole
Forming on iron core and towards the some compact arranged permanent magnet of long stator, and the magnetizing direction of permanent magnet is with short
The direction of motion of mover is vertical；
Described long stator is arranged in a linear by multiple adjustable magnetic iron blocks and forms；The described armature number of teeth and adjustable magnetic ferrum
The number of block differs 1～2；
Described magnetic pole is hidden pole type structure, then the twice that permanent magnet number is the armature number of teeth of magnetic pole, and often
The centrage of individual armature tooth and armature slot aligns with the centrage of corresponding permanent magnet, or the center of each armature tooth
Centrage between line with corresponding two permanent magnets aligns.
Asymmetric double-flanged end permanent magnet linear synchronous motor the most according to claim 1, it is characterised in that:
Described magnetic pole is salient pole type structure, then the permanent magnet number of magnetic pole is equal to the armature number of teeth, and each permanent magnet
Centrage align with the centrage of corresponding armature tooth or armature slot.
Asymmetric double-flanged end permanent magnet linear synchronous motor the most according to claim 1, it is characterised 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 alternately row
Row.
Asymmetric double-flanged end permanent magnet linear synchronous motor the most according to claim 1, it is characterised in that:
Described long stator use between the most adjacent two the adjustable magnetic iron blocks of isolating construction by inject non-magnet material fill with
Realize fixing.
Asymmetric double-flanged end permanent magnet linear synchronous motor the most according to claim 1, it is characterised in that:
Described long stator uses and is connected with each other by ferromagnetic magnetic bridge between continuous structure, i.e. adjustable magnetic iron block, then by long
Bolt is fixed.
Asymmetric double-flanged end permanent magnet linear synchronous motor the most according to claim 1, it is characterised in that:
Described armature winding uses the non-overlapped full tooth winding construction in end or Half-gear winding structure, the most each armature
The coil number of groove 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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| CN104242596B true CN104242596B (en) | 2016-08-17 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN109842264B (en) * | 2017-11-24 | 2020-09-01 | 哈尔滨工业大学 | Bilateral plate permanent magnet 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 |
| CN108512393B (en) * | 2018-05-17 | 2019-09-03 | 浙江大学 | A kind of novel four sides type linear motor |
| GB2576004B (en) * | 2018-07-31 | 2022-10-05 | Trw Ltd | An electromagnetic linear actuator |
| CN114614585B (en) * | 2022-03-24 | 2023-11-21 | 浙江大学 | Linear-rotary hybrid excitation low-speed generator |
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