CN101789676B - Fault-tolerance permanent magnet linear motor - Google Patents
Fault-tolerance permanent magnet linear motor Download PDFInfo
- Publication number
- CN101789676B CN101789676B CN2010101208475A CN201010120847A CN101789676B CN 101789676 B CN101789676 B CN 101789676B CN 2010101208475 A CN2010101208475 A CN 2010101208475A CN 201010120847 A CN201010120847 A CN 201010120847A CN 101789676 B CN101789676 B CN 101789676B
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- armature
- mover
- tooth
- motor
- permanent magnet
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- 238000004804 winding Methods 0.000 claims abstract description 36
- 210000000515 tooth Anatomy 0.000 claims description 51
- 238000002955 isolation Methods 0.000 abstract description 6
- 230000002349 favourable effect Effects 0.000 abstract 2
- 238000009413 insulation Methods 0.000 abstract 2
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 9
- 230000005389 magnetism Effects 0.000 description 4
- 238000004080 punching Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001095 motoneuron effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The invention discloses a fault-tolerance permanent magnet linear motor, which is applied to the field of linear driving with high reliability and high efficiency. The fault-tolerance permanent magnet linear motor comprises a stator, a mover and armature windings, wherein the length of the mover is smaller than that of the stator, a plurality of armature teeth are uniformly distributed on the stator at intervals, the armature windings are wound on the armature teeth, a set of armature windings is arranged in a tooth groove of each armature tooth, an insulation tooth is arranged between every two adjacent armature teeth, permanent magnets are pasted and arranged on the end parts of the armature teeth, the height of the insulation teeth is larger than that of the armature teeth pasted and provided with the permanent magnets, and the mover is in a projected electrode shape formed by a mover iron core and a plurality of mover teeth. The invention has the advantages of simple structure, high power density and high reliability, and is favorable for reducing the tooth groove force of the motor. Physical isolation, heat isolation and magnetic circuit decoupling exist between phases of the motor, the permanent magnets are favorable for heat dissipation, and the motor has strong fault operation and fault-tolerance performance.
Description
Technical field
The present invention relates to the permanent-magnetism linear motor of a kind of electrician, technical field of motors, be applied to highly reliable, high efficiency linear drives fields such as artificial heart, magnetic artillery.
Background technology
Linear electric motors are a kind ofly to realize direct transmission, need not to transfer to rotatablely moving straight-line attachment device; Can eliminate the various position errors that intermediate link is brought; Improve the positioning accuracy of whole system, the structure of simplified system, the weight and volume of minimizing system.
At present, linear electric motors commonly used have two types: one type is to be main electro-magnetic motor with the line inductance electromotor, and its defective is: power factor, power density and efficient are all not high; Another kind of is to be main magneto with the permanent magnet linear synchronous motor; Compare with line inductance electromotor, its energy index is high, volume is little, in light weight, and has the dynamic brake function; Have the two-fold advantage of magneto and linear electric motors concurrently; But its defective is: fault freedom is poor, can't satisfy high reliability and the occasion of moving high requirement continuously, for example artificial heart, magnetic artillery etc.
The rotary stator permanent magnetic type electric of biconvex electrode structure is simple in structure, reliability is high; Have doubly salient permanent magnet motor, flux switch permanent magnet motor and three kinds of structures of magnetic flux reverse motor, these three kinds of structures are: permanent magnet places between the stator yoke portion, stator tooth of motor respectively and adopts the stator salient poles surface mount.Wherein, doubly salient permanent magnet motor is because its permanent magnet places the stator yoke portion of motor, and therefore, its permanent magnetism magnetic linkage has unipolarity, and the power density of motor is lower than flux switch permanent magnet motor and magnetic flux reverse motor.Flux switch permanent magnet motor is because permanent magnet is surrounded by motor windings, and when motor generation short circuit in winding fault, the temperature rise meeting that short circuit current brings causes permanent magnet to produce permanent demagnetization, and this has just limited the fault freedom of this kind motor.Magnetic flux reverse motor with bipolarity permanent magnetism magnetic linkage has the advantage of high reliability concurrently when having high power density.
The primary permanent magnet type linear motor of biconvex electrode structure is a kind of novel permanent magnetic linear electric motors that occur in recent years, and such motor has been concentrated the plurality of advantages of rotary stator permanent magnetic type electric and linear electric motors, and simple in structure, low cost of manufacture, efficient are high; But then; What primary permanent magnet type linear motor adopted is the traditional structure of every groove 2 cover windings; Alternate short circuit in winding fault can take place, and its magnetic flux path constitutes the loop mutually via adjacent, cause alternate mutual inductance bigger; When wherein one when breaking down mutually, can influence the operate as normal of other non-fault phase of motor.
Summary of the invention
The objective of the invention is for overcoming the deficiency of prior art; Based on the structure of present rotary stator permanent magnetic type electric and primary permanent magnet type linear motor, proposed that a kind of reliability is high, motor independent, the permanent-magnetism linear motor of magnetic circuit between phase and phase with fault freedom.
The technical scheme that the present invention adopts is: comprise stator, mover and armature winding; The length of mover is less than the length of stator; A plurality of uniformly at intervals armature tooths on the stator; Armature winding is around on the armature tooth, and a cover armature winding is set in the teeth groove of each said armature tooth, is provided with one between every adjacent two said armature tooths and isolates tooth; Permanent magnet is mounted on the armature tooth end, isolates the height of the height of tooth greater than the armature tooth that is pasted with permanent magnet; Mover is the salient pole shape of being made up of mover iron core and a plurality of mover tooth.
The invention has the beneficial effects as follows:
1, the present invention is that extremely multiple tooth structure of biconvex and band are isolated tooth, and is simple in structure, power density is high, reliability is high; Help reducing the teeth groove power of motor, and then reduce the force oscillation of motor.
2, the armature winding on the motor stator is centralized winding, and it is convenient to make rule, and winding overhang is short, and resistance and copper loss are less.
3, winding adopts every groove to have only the form of a cover winding, and the stator tooth that does not have winding plays the motor effect of physical isolation, heat isolation and magnetic circuit decoupling zero between phase and phase as isolating tooth.
4, mover adopts simple salient-pole structure, and no winding, brushless, no permanent magnetism are easy to safeguard.
5, permanent magnet adopts the surface-pasted form of stator tooth, makes power of motor density height, permanent magnet be suitable for advantages such as heat radiation, and the back electromotive force that bipolarity permanent magnetism magnetic linkage can design motor according to actual needs is sine wave and trapezoidal wave.
6, motor adopts the segmented drive, has that the ability of operating with failure is strong, energy-saving advantages.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
Fig. 1 is a structural representation of the present invention.
Among the figure: 1. stator; 2. mover; 3. permanent magnet; 4. armature winding; 5. isolation tooth; 6. armature tooth; 7. mover iron core; 8. mover tooth.
Embodiment
As shown in Figure 1, the present invention is by stator 1, mover 2 and be fixed in permanent magnet 3 on the stator 1, armature winding 4,7 of the iron cores of isolating on tooth 5, armature tooth 6 and the mover 2 form.The length of mover 2 is less than the length of stator 1.A plurality of uniformly at intervals armature tooths 6 on stator 1; The punching that armature tooth 6 usefulness are enough laminates; Be provided with one between every adjacent two armature tooths 6 and isolate tooth 5; Relative two permanent magnets 3 of polarity adopt the surface mount form fix in the end of armature tooth 6, make the effective air gap length of armature tooth 6 ends increase.Isolate the height of the height of tooth 5 greater than the armature tooth that is pasted with permanent magnet 36.Armature winding 4 is on armature tooth 6, and what also be that stator 1 do not have winding is to isolate tooth 5, and armature winding 4 adopts the mode of concentrating winding; One cover armature winding 4 only is set in the teeth groove of each armature tooth 6; All armature winding 4 adopt the independently-powered mode of dividing into groups on the stator 1, are first group like winding A1, B1, the C1 of armature winding 4, and winding A2, B2, C2 are second group; The rest may be inferred, formed many group power supply areas of the present invention.
Mover 2 is salient pole shapes of being processed by permeability magnetic material, has not both had winding also not have permanent magnet on the mover 2, is made up of mover iron core 7 and a plurality of mover teeth 8, does linear running.The punching that mover iron core 7 usefulness are enough laminates, and the magnetic conduction of mover iron core 7 partly adopts D23 material punching commonly used to press folded forming.The number of teeth of the mover tooth 8 on the mover 2 makes mover 2 armature tooth 6 across two groups of power supply areas in traffic coverage at least, to guarantee that motor can operate with failure when a certain group of power supply area breaks down.
The magnetic flux path major part of armature winding 4 of the present invention is via isolating tooth 5 formation loops; Realize the space physics interval of armature winding 4; Make that each phase winding of motor is separate, magnetic circuit has independently obtained enhancing between each phase, has fundamentally avoided the generation of phase fault; Realize hot isolation, also made each phase mutual inductance of motor be approximately zero simultaneously.Isolate the height of tooth 5 and can guarantee to isolate the loop of tooth 5, play and improve alternate independence, promote the effect of motor fault freedom as the armature flux path greater than the height of the armature tooth that is pasted with permanent magnet 36.
Claims (1)
1. fault-tolerance permanent magnet linear motor; Comprise stator (1), mover (2) and armature winding (4), a plurality of uniformly at intervals armature tooths (6) on the stator (1), armature winding (4) are around on the armature tooth (6); One cover armature winding (4) is set in the teeth groove of each said armature tooth (6); Be provided with one between every adjacent two said armature tooths (6) and isolate tooth (5), mover (2) is the salient pole shape of being made up of mover iron core (7) and a plurality of mover tooth (8), it is characterized in that:
The length of mover (2) is less than the length of stator (1), and permanent magnet (3) is mounted on armature tooth (6) end, isolates the height of the height of tooth (5) greater than the armature tooth that is pasted with permanent magnet (3) (6); It is independently-powered that said armature winding (4) has many group power supply areas and every group, the number of teeth of the mover tooth (8) on the mover (2) make at least mover (2) when operation across two groups of said power supply areas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101208475A CN101789676B (en) | 2010-03-10 | 2010-03-10 | Fault-tolerance permanent magnet linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101208475A CN101789676B (en) | 2010-03-10 | 2010-03-10 | Fault-tolerance permanent magnet linear motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101789676A CN101789676A (en) | 2010-07-28 |
| CN101789676B true CN101789676B (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101208475A Expired - Fee Related CN101789676B (en) | 2010-03-10 | 2010-03-10 | Fault-tolerance permanent magnet linear motor |
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Families Citing this family (16)
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| CN102157310B (en) * | 2011-04-20 | 2013-04-03 | 东南大学 | Linear permanent magnet motor operating mechanism of high-voltage circuit breaker |
| CN102157309B (en) * | 2011-04-20 | 2013-03-20 | 东南大学 | Long-stroke linear permanent magnet motor operation mechanism of high-voltage breaker |
| CN103023269A (en) * | 2012-08-30 | 2013-04-03 | 江苏大学 | Single-pole flux reverse permanent magnet linear motor |
| CN102931802B (en) * | 2012-11-22 | 2015-08-05 | 江苏大学 | A kind of complementary-type fault-tolerant linear |
| CN102938602A (en) * | 2012-11-22 | 2013-02-20 | 江苏大学 | Fault-tolerant linear motor capable of reducing and saving permanent-magnet material |
| CN103248193B (en) * | 2013-05-27 | 2015-08-05 | 江苏大学 | Fault-tolerate primary permanent magnetic vernier linear motor |
| CN103633810B (en) * | 2013-11-19 | 2016-08-31 | 江苏大学 | A kind of flux-reversal hybrid excited linear motor of cutting orientation magnetizing |
| CN103647431B (en) * | 2013-12-16 | 2015-12-02 | 江苏大学 | The each extremely free-standing permanent-magnet linear fault-tolerant motor of second modular |
| CN104201858A (en) * | 2014-07-08 | 2014-12-10 | 哈尔滨工业大学 | Multiphase linear reluctance motor |
| CN104201859B (en) * | 2014-08-28 | 2016-08-17 | 浙江大学 | A kind of asymmetric double-flanged end composite excitation linear synchronized motor |
| US10840791B2 (en) * | 2015-04-21 | 2020-11-17 | Mitsubishi Electric Corporation | Linear motor |
| CN104779772A (en) * | 2015-04-29 | 2015-07-15 | 哈尔滨工业大学 | Modularization flat plate type multiphase permanent magnet linear motor based on single and double layer compound windings |
| CN105305671B (en) * | 2015-10-22 | 2018-06-26 | 南京航空航天大学 | A kind of cylinder type moving-iron type permanent magnet linear generator |
| CN105871171B (en) * | 2016-04-08 | 2018-06-01 | 浙江大学 | A kind of change flux linear synchronous motor |
| CN109167446B (en) * | 2018-09-12 | 2024-08-20 | 苏州直为精驱控制技术有限公司 | High-thrust linear motor |
| CN112688528B (en) * | 2020-12-25 | 2021-09-24 | 东南大学 | Multi-harmonic excitation type arc permanent magnet synchronous motor |
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| CN1937356A (en) * | 2006-09-15 | 2007-03-28 | 江苏大学 | Stator permanent-magnet double salient pole fault-tolerant motor |
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| CN201360210Y (en) * | 2009-02-23 | 2009-12-09 | 东南大学 | Long secondary permanent magnet linear motor |
| CN101610007A (en) * | 2009-07-15 | 2009-12-23 | 南京航空航天大学 | 3 phase 12/11 pole permanent-magnetic-switch flux linkage motor and method for inhibiting short circuit current thereof |
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2010
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Patent Citations (5)
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| CN1937356A (en) * | 2006-09-15 | 2007-03-28 | 江苏大学 | Stator permanent-magnet double salient pole fault-tolerant motor |
| CN200973056Y (en) * | 2006-11-24 | 2007-11-07 | 沈阳工业大学 | Magnetic conductance modulation permanent-magnet liner synchronous dynamo |
| CN201360210Y (en) * | 2009-02-23 | 2009-12-09 | 东南大学 | Long secondary permanent magnet linear motor |
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| CN101610007A (en) * | 2009-07-15 | 2009-12-23 | 南京航空航天大学 | 3 phase 12/11 pole permanent-magnetic-switch flux linkage motor and method for inhibiting short circuit current thereof |
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| CN101789676A (en) | 2010-07-28 |
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