CN201478982U - Mixed-excitation type line motor with biconvex structure - Google Patents
Mixed-excitation type line motor with biconvex structure Download PDFInfo
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- CN201478982U CN201478982U CN2009202306783U CN200920230678U CN201478982U CN 201478982 U CN201478982 U CN 201478982U CN 2009202306783 U CN2009202306783 U CN 2009202306783U CN 200920230678 U CN200920230678 U CN 200920230678U CN 201478982 U CN201478982 U CN 201478982U
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Abstract
A mixed-excitation type line motor with a biconvex structure relates to the field of electrical engineering, electric motors and rail transportation, in particular to a novel mixed-excitation type line motor suitable for the urban railway system. The motor comprises a primary (1) and a secondary (2) which adopt salient structures, wherein the primary (1) includes a permanent magnet (3), an armature winding (4), an excitation winding (5) and a primary iron core (6), and the secondary (2) includes a secondary iron core (7); the permanent magnet (3) is arranged in the primary iron core (6) of the primary (1), the armature winding (4) is a concentrated winding and wound around teeth of the primary iron core (6), and the excitation winding (5) is wound around teeth of the primary iron core (6); and the primary (1) is placed on a train, and the secondary (2) is a magnetic-conduction steel rail and placed on a train rail. The line motor with the magnetic-field adjusting capacity and the extremely high theory and practical value can reduce the cost of the rail transportation, and improves the motor efficiency.
Description
Technical field
The utility model relates to electrician, motor, field of track traffic, refers in particular to a kind of new type composite excitation linear electric motors that are applicable to urban track traffic.
Background technology
Intensive along with quickening of urbanization process and City Building, the urban rapid railway vehicles such as subway, light rail rely on advantages such as its low energy consumption, of low pollution, punctuality, are bringing into play important effect in the sustainable development of city.And along with more and more higher to the requirement of track vehicle fail safe, rapidity and comfortableness, to also corresponding the having higher requirement of performance of the traction electric machine of drive track traffic train, the research in this field has also obtained relevant scholar concern more and more widely.
With regard to technological layer, electrified city rail traction electric machine mainly can adopt these two kinds of technological approaches of electric rotating machine and linear electric motors.Adopt the city rail electric car of linear electric motors, electric energy is directly changed into straight-line mechanical energy, and without any need for the transmission device of intermediate conversion mechanism, can avoid sliding variety of issue with idling products; In addition, linear electric motors are compared to electric rotating machine, have reduced bodywork height, can reduce the subway work amount, thereby reduce construction cost.Therefore, the linear electric motors that are used for city rail traffic are studied, had important in theory meaning and far-reaching economy and society value.
Current, electrical technology field mainly contains linear asynchronous (induction) motor and linear synchronous generator to city rail traffic with the research of linear electric motors, and the latter can be divided into electric excitation type linear synchronous generator and permanent-magnet linear synchronous machine.Wherein, the line inductance electromotor search time is morning, and range of application is also wider, but there is deficiency in it at aspects such as power factor, power density, efficient.In addition, in conjunction with the monopoly position of China on rare earth permanent-magnetic material, the track traffic permanent-magnetism linear motor that research has high power density has remarkable advantages more.Compare with the induction type linear electric motors, magneto structure efficiency height, power density is big, energy index is high, volume is little, in light weight.Structure at present commonly used has two big classes, and (1) is installed in elementary (mover) with permanent magnet, and promptly on the compartment, and that the armature winding of the generation actuating force that will interact with it is laid on is secondary, promptly on the track; (2) armature winding is placed on the elementary compartment, and permanent magnet is laid in orbit.No matter this shows, be above-mentioned arbitrary structure, all need lay winding conducting wire or permanent magnet in the rail side, greatly increased project cost, brought difficulty also for simultaneously track maintenance and management along the line.
Therefore, middle nineteen nineties in last century is proposed the rotary stator permanent magnetic type electric based on the biconvex electrode structure also developed and that use be applied to orthoscopic primary permanent magnet type motor, just above-mentioned shortcoming be can overcome, and good research and practical prospect presented.Such as, on its permanent magnet and armature winding all place elementary (mobile compartment), and secondary (track) only need be laid by the soft magnetic material with magnetic property.Still be the angle of safeguarding of track no matter, all have the meaning of the property changed from cost.Then, present three kinds of main primary permanent magnet type linear motor structures that occur, be unipolarity flux pulsation type, bipolarity Magneticflux-switching type, bipolarity flux-reversal type, all there is a major issue, be that magnetic field is to be produced by the single magnetic source of permanent magnet, can not carry out in time according to the train operation performance demands, regulate rapidly.At this shortcoming.
Summary of the invention
Technical problem: the purpose of this utility model be keep pure primary permanent magnet formula biconvex utmost point linear electric motors good characteristic the basis on, overcome the uncontrollable shortcoming in its magnetic field, propose a kind of composite excitation type biconvex electrode structure linear electric motors, be particularly suitable for the application in fields such as urban track traffic.
Technical scheme: the utility model is on the basis of primary permanent magnet formula biconvex utmost point linear electric motors, by the elementary space of reasonable arrangement, increase by a cover and regulate the electric excitation winding that magnetic field is used, excitation winding, armature winding and permanent magnet three are all placed elementary (on the promptly mobile compartment) of linear electric motors, and the common permeability magnetic material of secondary employing of these linear electric motors is layed in the rail of train.Therefore, the present invention does not increase the simplicity and the robustness of motor volume and change secondary structure when improving pure permanent-magnet linear motor performance controllability and flexibility.
This motor comprises and all adopts the elementary, secondary of salient-pole structure; Elementary permanent magnet, armature winding, excitation winding, the elementary iron core of comprising secondaryly comprises secondary iron core; Permanent magnet is arranged in the elementary iron core on elementary, and armature winding is around on the tooth of elementary iron core for concentrating winding, and excitation winding is around on the tooth of elementary iron core; Elementary being placed on the train; Secondary is the magnetic conductivity rail, is placed on the train rail.
Excitation winding is arranged on the tooth of elementary elementary iron core, and the air-gap field that permanent magnet produces is regulated.Permanent magnet is arranged on elementary yoke portion, between cog or the tooth surface of going up and being distributed in elementary iron core.
Beneficial effect: based on the controllable magnetic field type primary permanent magnet linear electric motors of biconvex electrode structure have simple in structure, power density is high, magnetic field scalable, efficient height, exert oneself big, low cost and other advantages, can be used for fields such as city rail traffic.
1, the simple salient-pole structure of secondary employing, no winding, brushless, no permanent magnetism are suitable for occasions such as track traffic, do not need to lay permanent magnet or lead winding on the track, can reduce the motor manufacturing cost, and are easy to construction;
2, the armature winding on elementary is centralized winding, and it is convenient to make rule, and resistance is little, and copper loss is low;
3, the excitation winding on elementary can increase magnetic or degaussing according to the needs of train operation performance, listing when being in an emergency, can realize complete degaussing, thereby guarantee train safe, has improved reliability;
4, permanent magnet places elementaryly, when having inherited magneto power density advantages of higher, helps heat radiation and suppresses temperature rise;
5, utilize armature winding or the excitation winding be in together on elementary to magnetize for permanent magnet is online or to demagnetize;
6, adopt the municipal rail train of this kind structure of the linear motion actuator, reduced construction cost;
7, permanent magnet can place elementary yoke portion, between cog and tooth table, can be according to actual needs, and flexible design motor permanent magnetism magnetic linkage is unipolarity or bipolarity, and the potential waveform of may command motor is sine wave or trapezoidal wave.
Description of drawings
Fig. 1 is the structural representation that composite excitation type biconvex electrode structure line motor permanent magnet places elementary yoke portion;
Fig. 2 is the structural representation that composite excitation type biconvex electrode structure line motor permanent magnet places elementary between cog;
Fig. 3 is the structural representation that composite excitation type biconvex electrode structure line motor permanent magnet places elementary tooth table;
Have among the above figure: elementary 1, secondary 2, permanent magnet 3, armature winding 4, excitation winding 5, elementary iron core 6 and secondary iron core 7.
Embodiment
The composite excitation type biconvex electrode structure linear electric motors that the utility model proposed, its elementary, secondary salient-pole structure that all adopts, Fig. 1-3 is depicted as the controllable magnetic field type primary permanent magnet linear electric motors of three kinds of biconvex electrode structures, its permanent magnet places yoke portion, between cog and the tooth table of elementary iron core respectively, according to its magnetic signature, difference called after controllable magnetic field type flux pulsation formula primary permanent magnet linear motor, controllable magnetic field type magnetic flux suitching type primary permanent magnet linear motor and controllable magnetic field type magnetic flux inverse type primary permanent magnet linear motor.The common feature of the type motor is elementaryly to be made up of iron core, armature winding, excitation winding and permanent magnet, and they are installed on the track train; Both do not had winding not have permanent magnet on secondary yet, made the salient pole shape, placed the rail side by permeability magnetic material.
Placing the controllable magnetic field type magnetic flux suitching type primary permanent magnet linear motor of elementary between cog with a permanent magnet is example, and its sectional view as shown in Figure 2.Linear permanent-magnet motor of the present invention by elementary 1, secondary 2 and the permanent magnet 3, armature winding 4, excitation winding 5, elementary iron core 6 and the secondary iron core 7 that are fixed on elementary 1 formed.Wherein, be furnished with salient pole on elementary 1, permanent magnet 3 is symmetrically distributed in the between cog of elementary 1 salient pole.Elementary 1 is combined by elementary iron core 5 of " U " type and permanent magnet 3.Armature winding 4 on elementary 1 is for concentrating winding, and each coil windings is across on two teeth, and the centre is embedded with a permanent magnet 3.Excitation winding 5 on elementary 1 is for concentrating winding, and each coil windings is across in the groove of being vacated at permanent magnet 3.Secondary 2 have a plurality of teeth, form secondary salient pole, and quantity is determined by track length.The soft permeability magnetic material core stamping of elementary iron core 5 usefulness is pressed folded forming.Secondary iron core 7 adopts permeability magnetic material as rail, places the train rail side.
Other composite excitation type biconvex electrode structure linear electric motors of two types can be taked similar execution mode.
Claims (3)
1. composite excitation type biconvex electrode structure linear electric motors is characterized in that this motor comprises elementary (1), secondary (2) of all adopting salient-pole structure; Elementary (1) comprises permanent magnet (3), armature winding (4), excitation winding (5), elementary iron core (6), and secondary (2) comprise secondary iron core (7); Permanent magnet (3) is arranged in the elementary iron core (6) on elementary (1), and armature winding (4) is around on the tooth of elementary iron core (6) for concentrating winding, and excitation winding (5) is around on the tooth of elementary iron core (6); Elementary (1) is placed on the train; Secondary (2) are the magnetic conductivity rail, are placed on the train rail.
2. according to the described composite excitation type biconvex of claim 1 electrode structure linear electric motors, it is characterized in that excitation winding (5) is arranged on the tooth of elementary iron core (6) of elementary (1), regulates the air-gap field that permanent magnet (3) produces.
3. according to the described composite excitation type biconvex of claim 1 electrode structure linear electric motors, it is characterized in that permanent magnet (3) is arranged on elementary iron core (6) was gone up and be distributed in elementary (1) yoke portion, between cog or tooth surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202306783U CN201478982U (en) | 2009-08-19 | 2009-08-19 | Mixed-excitation type line motor with biconvex structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202306783U CN201478982U (en) | 2009-08-19 | 2009-08-19 | Mixed-excitation type line motor with biconvex structure |
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| CN201478982U true CN201478982U (en) | 2010-05-19 |
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| CN2009202306783U Expired - Fee Related CN201478982U (en) | 2009-08-19 | 2009-08-19 | Mixed-excitation type line motor with biconvex structure |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834512A (en) * | 2010-05-24 | 2010-09-15 | 东南大学 | Complementary modular hybrid excited linear motor |
| CN102011828A (en) * | 2010-12-07 | 2011-04-13 | 哈尔滨工业大学 | Mixed excitation linear electromagnetic damper |
| CN102096042A (en) * | 2010-12-07 | 2011-06-15 | 哈尔滨工业大学 | System for testing linear motor characteristics |
| CN104600951A (en) * | 2015-01-30 | 2015-05-06 | 南京航空航天大学 | Primary electrically-excited series magnetic circuit double-side linear motor |
| CN104638796A (en) * | 2015-01-29 | 2015-05-20 | 南京航空航天大学 | Magnetic circuit compensating primary electro-magnetic linear motor |
| CN104716808A (en) * | 2015-03-12 | 2015-06-17 | 南京航空航天大学 | Multiphase electro-magnetic synchronous motor |
| CN105610262A (en) * | 2016-01-22 | 2016-05-25 | 山东理工大学 | Two-phase electro-magnetic doubly-salient power sunroof drive motor |
| CN106961203A (en) * | 2017-04-28 | 2017-07-18 | 鲁东大学 | A kind of transverse magnetic flux magnetic-field modulation-type linear electric motors |
-
2009
- 2009-08-19 CN CN2009202306783U patent/CN201478982U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834512A (en) * | 2010-05-24 | 2010-09-15 | 东南大学 | Complementary modular hybrid excited linear motor |
| CN102011828A (en) * | 2010-12-07 | 2011-04-13 | 哈尔滨工业大学 | Mixed excitation linear electromagnetic damper |
| CN102096042A (en) * | 2010-12-07 | 2011-06-15 | 哈尔滨工业大学 | System for testing linear motor characteristics |
| CN102096042B (en) * | 2010-12-07 | 2013-02-13 | 哈尔滨工业大学 | System for testing linear motor characteristics |
| CN102011828B (en) * | 2010-12-07 | 2014-04-09 | 哈尔滨工业大学 | Mixed excitation linear electromagnetic damper |
| CN104638796A (en) * | 2015-01-29 | 2015-05-20 | 南京航空航天大学 | Magnetic circuit compensating primary electro-magnetic linear motor |
| CN104600951A (en) * | 2015-01-30 | 2015-05-06 | 南京航空航天大学 | Primary electrically-excited series magnetic circuit double-side linear motor |
| CN104600951B (en) * | 2015-01-30 | 2018-02-09 | 南京航空航天大学 | Primary electrical excitation series circuit bilateral linear motor |
| CN104716808A (en) * | 2015-03-12 | 2015-06-17 | 南京航空航天大学 | Multiphase electro-magnetic synchronous motor |
| CN105610262A (en) * | 2016-01-22 | 2016-05-25 | 山东理工大学 | Two-phase electro-magnetic doubly-salient power sunroof drive motor |
| CN105610262B (en) * | 2016-01-22 | 2018-01-16 | 山东理工大学 | Two-phase electric excitation biconvex electrode power sunroof motor |
| CN106961203A (en) * | 2017-04-28 | 2017-07-18 | 鲁东大学 | A kind of transverse magnetic flux magnetic-field modulation-type linear electric motors |
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| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20120819 |