CN203617874U - Magnetic flux reverse mixed excitation linear motor with tangential magnetizing - Google Patents
Magnetic flux reverse mixed excitation linear motor with tangential magnetizing Download PDFInfo
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- CN203617874U CN203617874U CN201320732668.6U CN201320732668U CN203617874U CN 203617874 U CN203617874 U CN 203617874U CN 201320732668 U CN201320732668 U CN 201320732668U CN 203617874 U CN203617874 U CN 203617874U
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- 230000005284 excitation Effects 0.000 title claims abstract description 41
- 230000004907 flux Effects 0.000 title claims abstract description 13
- 238000004804 winding Methods 0.000 claims abstract description 35
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000005415 magnetization Effects 0.000 claims 1
- 230000005347 demagnetization Effects 0.000 abstract description 6
- 230000002427 irreversible effect Effects 0.000 abstract description 5
- 229920006395 saturated elastomer Polymers 0.000 abstract description 5
- 210000000515 tooth Anatomy 0.000 description 34
- 238000005520 cutting process Methods 0.000 description 11
- 238000009826 distribution Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
本实用新型公开了一种切向充磁的磁通反向混合励磁直线电机，包括初级动子和次级定子，所述的初级动子由初级模块并列连接而成，所述的初级动子和次级定子均由导磁材料制成，所述的次级定子为等齿宽的凸极结构，所述的初级动子和次级定子之间为气隙，所述的初级模块两侧分别设有两个电枢齿，所述的两个电枢齿之间设有一个励磁齿，所述的每个电枢齿上绕有一套电枢绕组，所述的每个励磁齿上绕有一套励磁绕组，所述的电枢齿的端部贴装有两块极性相反的切向充磁的永磁体。降低了永磁体发生不可逆退磁的风险，提高了电机的可靠性。解决了狭小的导磁桥易于饱和的问题。提高了电机的容错性能。适合于需要大范围变速运行的应用场合。
The utility model discloses a tangentially magnetized magnetic flux reverse mixed excitation linear motor, which comprises a primary mover and a secondary stator. The primary mover is formed by connecting primary modules in parallel. The primary mover Both the primary mover and the secondary stator are made of magnetically permeable materials. The secondary stator is a salient pole structure with equal tooth width. There is an air gap between the primary mover and the secondary stator. The two sides of the primary module There are two armature teeth respectively, an excitation tooth is arranged between the two armature teeth, a set of armature winding is wound on each armature tooth, and a set of armature windings is wound on each excitation tooth. There is a set of excitation windings, and the ends of the armature teeth are mounted with two tangentially magnetized permanent magnets with opposite polarities. The risk of irreversible demagnetization of permanent magnets is reduced and the reliability of the motor is improved. It solves the problem that the narrow magnetic bridge is easy to be saturated. Improve the fault tolerance performance of the motor. Suitable for applications requiring a wide range of variable speed operation.
Description
Technical field
The utility model relates to the flux-reversal hybrid excited linear motor of a kind of magnetic flux reverse motor, particularly a kind of cutting orientation magnetizing.
Background technology
In needs Linear transmission occasion, linear electric motors have higher transmission efficiency than electric rotating machine, can promote the performance of whole system.Especially in wheel track traffic system, linear electric motors have that climbing capacity is strong, circuit applicability is strong, project cost is low and the advantage such as noise is low.Now, the linear electric motors of induction type are applied in various countries' urban track traffic.But induction machine excitation loss is large, power factor is low.Than induction machine, permanent-magnetism linear motor energy index is high, efficiency is high, power factor is high.Concerning traditional permanent-magnetism linear motor, be no matter by winding or permanent magnet along track laying, along with the increase of track length, the manufacturing cost of motor also will sharply increase.
Flux-reversal linear machine is different from traditional permanent-magnetism linear motor, its permanent magnet and winding be all positioned at short elementary on.Only be pressed into by cheap silicon steel sheet stack and length is secondary, be applicable to very much the laying along the long line of track.After but motor is made, air-gap field is difficult to regulate, and then brings Constant-power speed range little, and the problem of weak magnetic speed-up difficulty, is unfavorable for the speed governing of train.In addition, also cannot demagnetization in the time that motor is short-circuited fault, may cause fault to expand, be unfavorable for the safe operation of train.
Mixed excitation electric machine combines the advantage of magneto and electro-magnetic motor, on the basis of permanent magnet motor structure, adds excitation winding, can regulate air-gap field easily, thus the speed adjustable range of expansion motor.China authorizes utility model patent CN200910035497.X and CN201210083874.9 to disclose respectively a kind of composite excitation type magnetic flux reverse motor, on original permanent magnet flux reverse motor architecture basics, all do not make too large variation, retain the compact simple structure of permanent magnet flux reverse motor, excitation winding does not take slot space, do not need additionally to increase the volume of motor, still, because magnetic flux need to pass permanent magnet, therefore, regulate the efficiency in magnetic field not high.China authorizes utility model patent CN201320123623.9 and CN201110097982.7 to disclose a kind of rotor sectional type mixed excited magnetic pass reverse motor, all leaves magnetic conduction bridge on permanent magnet both sides, and therefore, motor adjustable magnetic performance is improved.The rotor structure of segmented has also improved the fault freedom of motor.But the width of magnetic conduction bridge is comparatively narrow and small, easily saturated, restrict the adjustable magnetic ability of motor.The rotor of segmented makes troubles also to manufacture processing and installation.In addition, in above electric machine structure, the magnetizing direction of permanent magnet is radially, and the magnetic potential that passes into electric current generation with armature, excitation winding is connected mutually, and irreversible demagnetization easily occurs permanent magnet, and motor is broken down.
Utility model content
For problems of the prior art, the purpose of this utility model is to provide a kind of flux-reversal hybrid excited linear motor of cutting orientation magnetizing, adopt the permanent magnet of cutting orientation magnetizing, its magnetizing direction and armature, excitation winding magnetic potential are in parallel, and are not easy, under curent change impacts, irreversible demagnetization occurs.The magnetic flux that excitation winding produces does not need the permanent magnet very large through magnetic resistance, has therefore improved the adjustable magnetic efficiency of motor.In fact armature tooth has served as the function of magnetic conduction bridge, has avoided narrow and small magnetic conduction bridge to be easy to saturated problem.Meanwhile, abandon complicated sectional type rotor structure, and adopt modular primary structure to make separately from, the fault freedom of lifting motor.
In order to achieve the above object, the utility model is by the following technical solutions: a kind of flux-reversal hybrid excited linear motor of cutting orientation magnetizing, comprise elementary mover and secondary stator, described elementary mover is formed by connecting side by side by primary module, described elementary mover and secondary stator are made by permeability magnetic material, the salient-pole structure of the facewidth such as described secondary stator is, between described elementary mover and secondary stator, it is air gap, described primary module both sides are respectively equipped with two armature tooths, between two described armature tooths, be provided with an excitation tooth, on described each armature tooth, be wound with a set of armature winding, on described each excitation tooth, be wound with a set of excitation winding, the end of described armature tooth is pasted with the permanent magnet of two opposite polarity cutting orientation magnetizings.
In described primary module, the tooth pitch of two armature tooths is λ
1=(j ± 0.5) τ
p, the relative displacement between adjacent primary module is τ
s=k τ
p± (1/m) τ
p, τ
pfor secondary pole span, k, j is positive integer, the number of phases that m is motor.
Armature winding differential concatenation in described primary module, the series connection of excitation winding forward.
Adopt after technique scheme, the utlity model has following beneficial effect:
1. the utility model adopts the permanent magnet of cutting orientation magnetizing, makes permanent magnet magnetic potential direction and armature, excitation winding electric current generation magnetic potential direction parallel with one another, has reduced the risk of permanent magnet generation irreversible demagnetization, has improved the reliability of motor.
2. the utility model makes full use of armature tooth, makes it have the function of magnetic conduction bridge, improves whereby adjustable magnetic efficiency.Do not have additionally to add narrow and small magnetic conduction bridge on the both sides of permanent magnet, fundamentally solved narrow and small magnetic conduction bridge and be easy to saturated problem.
3. the utility model adopts modular primary structure, not only makes winding back emf sinusoidal symmetrical, has improved the fault freedom of motor simultaneously.
4. the utility model can be easily to excitation, the armature winding number of turn, and size of current is coordinated to control, and motor is carried out to efficiency optimization, realizes optimum efficiency, is suitable for the application scenario of variable-speed operation on a large scale.
Accompanying drawing explanation
Fig. 1 is the structural representation of the flux-reversal hybrid excited linear motor embodiment of a kind of cutting orientation magnetizing of the utility model.
Fig. 2 is the A phase armature winding magnetic linkage oscillogram of the utility model embodiment under different exciting operating mode.
Fig. 3 is the A phase armature winding counter potential waveform figure of the utility model embodiment under different exciting operating mode.
Fig. 4 is the utility model embodiment flux distribution in the time of permanent magnet independent role.
Fig. 5 is the utility model embodiment flux distribution in the time of permanent magnet and excitation winding acting in conjunction.
In figure: 1, elementary mover, 10a, elementary a module, 10b, elementary b module, 10c, elementary c module, 11, armature tooth, 12, excitation tooth, 13, armature winding, 14, excitation winding, 15, permanent magnet, 2, secondary stator.
Embodiment
According to Figure of description and specific embodiment, the utility model is further explained below.
As shown in Figure 1, a kind of flux-reversal hybrid excited linear motor of cutting orientation magnetizing, comprise elementary mover 1 and secondary stator 2, described elementary mover 1 is by elementary a module 10a, elementary b module 10b and elementary c module 10c are formed by connecting side by side, described elementary mover 1 and secondary stator 2 are made by permeability magnetic material, the salient-pole structure of the facewidth such as described secondary stator 2 is, between described elementary mover 1 and secondary stator 2, it is air gap, described primary module both sides are respectively equipped with two armature tooths 11, between two described armature tooths 11, be provided with an excitation tooth 12, on described each armature tooth 11, be wound with a set of armature winding 13, on described each excitation tooth 12, be wound with a set of excitation winding, the end of described armature tooth 11 is pasted with the permanent magnet 15 of two opposite polarity cutting orientation magnetizings.
In described primary module, the tooth pitch of two armature tooths 11 is λ
1=(j ± 0.5) τ
p, the relative displacement between adjacent primary module is τ
s=k τ
p± (1/m) τ
p, τ
pfor secondary pole span, k, j is positive integer, the number of phases that m is motor.
Armature winding 13 differential concatenations in described primary module, the series connection of excitation winding forward.
Because the utility model embodiment motor is three phase electric machine, therefore m=3.Get again n=1, elementary by mn module composition, i.e. 3 module compositions; In each module, include 2i armature tooth 11, an i excitation tooth 12, i is positive integer, gets i=1, in each module, includes 11,1 excitation tooth 12 of 2 armature tooths.The present embodiment electric motor primary is made up of 3 primary module respectively, take elementary a module 10a as example, in elementary a module 10a, includes 2 armature tooth 11(A1, A2) and 1 excitation tooth 12(U).In same module, the tooth pitch of adjacent armature tooth 11 is λ
1=(j ± 0.5) τ
p, the relative displacement between adjacent block is τ
s=k τ
p± (1/m) τ
p, τ
pfor secondary pole span, k, j is positive integer.Getting respectively k, j is 7,4, and in same module, the tooth pitch of adjacent armature tooth 11 is λ
1=(4+0.5) τ
p=4.5 τ
p, the relative displacement between adjacent block is τ
s=7 τ
p+ (1/3) τ
p=22 τ
p/ 3.Take elementary a module 10a as example, adjacent armature tooth 11(A1, A2) tooth 4.5 τ apart
padhering to two covers of these two armature tooths 11 separately concentrates winding to differ 180 ° of electrical degree phase places, two covers concentrate winding to need differential concatenation (as shown in A phase winding in Fig. 1), make the magnetic circuit of A phase there is complementarity, in like manner B phase and C also have complementarity mutually, this just makes the first-harmonic of three opposite potential all obtain enhancing, and high order even-order harmonic part is cancelled out each other.Make the waveform of each opposite potential sinusoidal symmetrical.As shown in Figure 3, the A opposite potential oscillogram of the utility model embodiment linear electric motors under pure permanent magnet 15 excitations, as seen from the figure, counter potential waveform is sinusoidal symmetrical.
Fig. 4 and Fig. 5 are respectively pure permanent magnetism (pure permanent magnet 15 excitations) and increase the Distribution of Magnetic Field figure under two kinds of operating modes of magnetic (pass into and increase magnetic property direct current excitation and permanent magnet 15 excitation actings in conjunction).In Fig. 4, can see A phase, in elementary a module 10a, 15 of permanent magnets produce magnetic field in self module, seldom and other module linkages.In Fig. 5, can see A phase, in elementary a module 10a, permanent magnet 15 and direct current excitation also only produce magnetic field in self module, seldom and other module linkages.So the each Coupling Between Phases of the utility model is little, separate, have compared with high fault tolerance energy.
To sum up, the utility model adopts the permanent magnet 15 of cutting orientation magnetizing, make permanent magnet 15 magnetic potential directions and armature, excitation winding electric current generation magnetic potential direction parallel with one another, has reduced permanent magnet 15 and occur the risk of irreversible demagnetization, has improved the reliability of motor.The utility model makes full use of armature tooth 11, makes it have the function of magnetic conduction bridge, improves whereby adjustable magnetic efficiency.Do not have additionally to add narrow and small magnetic conduction bridge on the both sides of permanent magnet 15, fundamentally solved narrow and small magnetic conduction bridge and be easy to saturated problem.The utility model adopts modular primary structure, not only makes back-emf sinusoidal symmetrical, has improved the fault freedom of motor simultaneously.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320732668.6U CN203617874U (en) | 2013-11-19 | 2013-11-19 | Magnetic flux reverse mixed excitation linear motor with tangential magnetizing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320732668.6U CN203617874U (en) | 2013-11-19 | 2013-11-19 | Magnetic flux reverse mixed excitation linear motor with tangential magnetizing |
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| Publication Number | Publication Date |
|---|---|
| CN203617874U true CN203617874U (en) | 2014-05-28 |
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|---|---|---|---|
| CN201320732668.6U Expired - Lifetime CN203617874U (en) | 2013-11-19 | 2013-11-19 | Magnetic flux reverse mixed excitation linear motor with tangential magnetizing |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633810A (en) * | 2013-11-19 | 2014-03-12 | 江苏大学 | Tangential-magnetized magnetic flux reversed mixed excitation linear motor |
| CN104967274A (en) * | 2015-06-30 | 2015-10-07 | 奇瑞汽车股份有限公司 | Linear motor |
| CN105207446A (en) * | 2015-10-14 | 2015-12-30 | 江苏大学 | Embedded type mixing magnetic material fault-tolerant cylindrical linear motor |
| CN106787308A (en) * | 2017-03-20 | 2017-05-31 | 山东理工大学 | A kind of electrodynamic balance car magneto |
| CN106787286A (en) * | 2017-03-20 | 2017-05-31 | 山东理工大学 | A kind of bimodulus reluctance motor |
| CN107493002A (en) * | 2017-08-16 | 2017-12-19 | 中国石油大学(华东) | One kind easily opens up mutually primary high-temperature superconductor field excitation linear motor |
| CN111082548A (en) * | 2020-01-10 | 2020-04-28 | 南京航空航天大学 | A Stator Modular Hybrid Excitation Alternating Pole Flux Reverse Motor |
-
2013
- 2013-11-19 CN CN201320732668.6U patent/CN203617874U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633810A (en) * | 2013-11-19 | 2014-03-12 | 江苏大学 | Tangential-magnetized magnetic flux reversed mixed excitation 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 |
| CN104967274A (en) * | 2015-06-30 | 2015-10-07 | 奇瑞汽车股份有限公司 | Linear motor |
| CN105207446A (en) * | 2015-10-14 | 2015-12-30 | 江苏大学 | Embedded type mixing magnetic material fault-tolerant cylindrical linear motor |
| CN105207446B (en) * | 2015-10-14 | 2018-10-09 | 江苏大学 | A kind of fault-tolerant cylindrical linear motor of embedded mixing magnetic material |
| CN106787308A (en) * | 2017-03-20 | 2017-05-31 | 山东理工大学 | A kind of electrodynamic balance car magneto |
| CN106787286A (en) * | 2017-03-20 | 2017-05-31 | 山东理工大学 | A kind of bimodulus reluctance motor |
| CN106787308B (en) * | 2017-03-20 | 2019-01-22 | 山东理工大学 | A permanent magnet motor of an electric balance car |
| CN107493002A (en) * | 2017-08-16 | 2017-12-19 | 中国石油大学(华东) | One kind easily opens up mutually primary high-temperature superconductor field excitation linear motor |
| CN111082548A (en) * | 2020-01-10 | 2020-04-28 | 南京航空航天大学 | A Stator Modular Hybrid Excitation Alternating Pole Flux Reverse Motor |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140528 Effective date of abandoning: 20160831 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |