CN104052238A - Bilateral primary permanent magnetic vernier linear motor - Google Patents
Bilateral primary permanent magnetic vernier linear motor Download PDFInfo
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- CN104052238A CN104052238A CN201410259315.8A CN201410259315A CN104052238A CN 104052238 A CN104052238 A CN 104052238A CN 201410259315 A CN201410259315 A CN 201410259315A CN 104052238 A CN104052238 A CN 104052238A
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Abstract
The invention discloses a bilateral primary permanent magnetic vernier linear motor which comprises a primary motor part and a secondary motor part. The primary motor part comprises primary iron cores, an armature winding and permanent magnets. Semi-closed groove design is adopted in the primary iron cores, the permanent magnets are attached to the surfaces of armature teeth, the magnetizing directions of every two adjacent permanent magnets on the same primary iron core are opposite, and the armature winding is installed in a semi-closed groove. The secondary motor part comprises secondary iron cores and secondary salient poles. An air gap is formed between the primary motor part and the secondary motor part. The primary motor part does not need yoke iron cores, so that the weight of the primary motor part is reduced; the secondary motor part is formed only by stacking silicon steel stamped sheets with the salient poles, permanent magnets and windings are not arranged, and the mechanical strength is high; the system dynamic performance can be improved through a movable primary structure; the armature winding and the permanent magnets are all located in the primary motor part so that the motor can be cooled conveniently.
Description
Technical field
The present invention relates to a kind of double-flanged end primary permanent magnet vernier linear electric motors, can be used for reliable, the high efficiency rectilinear motion fields such as track traffic, elevator drive, low-speed high-thrust.
Background technology
Linear electric motors are a kind ofly electric energy to be directly changed into rectilinear motion mechanical energy and without any need for the transmission device of intermediate conversion mechanism, thereby more traditional kind of drive has obvious advantage, and as simple in structure, without wearing and tearing, precision is high, and efficiency is high.Therefore, linear electric motors obtain applying more and more widely.
Linear electric motors are of a great variety, and primary permanent magnet type linear motor is wherein a kind of, and its armature winding and permanent magnet are all positioned at elementary, and it is secondary only for being provided with the iron core of salient pole, therefore there is secondary structure simple, mechanical strength is high, be convenient to permanent magnet cooling, the advantage such as power density is large.It is unshakable in one's determination that traditional primary permanent magnet vernier linear electric motors comprise elementary yoke portion conventionally, this has increased the weight of electric motor primary virtually, especially for isometric secondary, the short primary application occasion of for example track traffic, the weight of whole moving component will be increased greatly, not only increase the project cost of system, and will affect the dynamic property of system.
And traditional bilateral linear motor is the simple superposition of two single-sided linear motors substantially, the integral performance parameter of its motor, such as power density etc., improves DeGrain.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of bilateral primary permanent magnet vernier linear electric motors are proposed, object is to reduce system manufacturing cost, improve dynamic performance, and in the situation that not affecting the performances such as unloaded back-emf, thrust output, reduce the size of inductance, thereby improve motor power factor.
In order to realize foregoing invention object, technical scheme provided by the invention is:
Bilateral primary permanent magnet vernier linear electric motors, this motor comprises electric motor primary and motor secondary.
Described electric motor primary comprises elementary iron core, armature winding and permanent magnet; The dispersed arrangement of elementary iron core, the tooth slot structure of formation primary part; Permanent magnet is mounted on armature tooth surface, and on same elementary iron core, the magnetizing direction of adjacent permanent magnet is contrary; Armature winding is installed in semi-enclosed slot; Described elementary iron core is " I " type, and the permanent magnet magnetizing direction of the same vertical direction of each elementary iron core is identical, and electric motor primary is unshakable in one's determination without yoke portion, has reduced the weight of electric motor primary, thereby has improved dynamic property.
Described motor secondary comprises secondary iron core and secondary salient pole, and upper and lower the secondary of both sides is axially symmetric structure, between electric motor primary and the motor secondary of upper and lower both sides, is equipped with air gap;
Magnetic field in motor forms closed-loop path by electric motor primary and motor secondary.
Magnetic field in motor, by the secondary yoke portion closure unshakable in one's determination of electric motor primary, permanent magnet, two-layer air gap and motor both sides, forms series field loop, to realize, reduces inductance, improves the object of power factor.
Motor carries out work based on magnetic gear effect, and its number of pole-pairs depends on permanent magnetic field number of pole-pairs and secondary teeth groove number, and meets:
Wherein
p fluxfor motor effective air gap magnetic flux number of pole-pairs,
n tfor the secondary salient pole number of teeth,
p pMfor permanent magnetic field number of pole-pairs,
v fluxfor the effective air gap magnetic flux speed of service,
v tfor the secondary speed of service,
g rfor magnetic gear no-load voltage ratio.Armature winding carries out coiling according to the number of pole-pairs of effective air gap magnetic flux.
The invention has the beneficial effects as follows:
1) armature winding and permanent magnet are all positioned at electric motor primary, are convenient to the cooling of motor;
2) elementary unshakable in one's determination " I " iron-core that adopts, the elementary yoke portion that has saved conventional motors is unshakable in one's determination, has effectively reduced electric motor primary weight, and has reduced manufacturing cost; For moving primary structure, can also effectively improve dynamic performance;
3) magnetic field in motor forms closed-loop path by the secondary yoke portion series connection unshakable in one's determination of electric motor primary, permanent magnet, two-layer air gap and motor both sides, to realize, reduces inductance, improves the object of power factor.
Accompanying drawing explanation
Fig. 1 is the structural representation of bilateral primary permanent magnet vernier linear electric motors.
Fig. 2 is the magnetic figure of bilateral primary permanent magnet vernier linear electric motors.
In figure: 1, elementary iron core, 2, armature winding, 3, permanent magnet, 4, secondary iron core, 5, secondary salient pole, 6, semi-enclosed slot, 7, air gap.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
Referring to Fig. 1, bilateral primary permanent magnet vernier linear electric motors provided by the invention are applicable to low-speed high-thrust operating mode, can be used as direct driving motor and run on electronic or generating state, and its structure comprises electric motor primary and motor secondary.
Described electric motor primary comprises elementary unshakable in one's determination 1, armature winding 2 and permanent magnet 3; Elementary 1 dispersed arrangement unshakable in one's determination, the tooth slot structure of formation primary part.
Elementary unshakable in one's determination 1 is " I " iron-core, and electric motor primary is unshakable in one's determination without yoke portion, has reduced the weight of electric motor primary, thereby has improved dynamic property.
Permanent magnet 3 is mounted on armature tooth surface, and the magnetizing direction of adjacent permanent magnet 3 is contrary on same elementary unshakable in one's determination 1, and permanent magnet 3 magnetizing directions of each elementary 1 same vertical direction unshakable in one's determination are identical.
Armature winding 2 is installed in semi-enclosed slot 6, and armature winding 2 carries out coiling according to the number of pole-pairs of effective air gap magnetic flux.
Described motor secondary comprises secondary unshakable in one's determination 4 and secondary salient pole 5, and the motor secondary of upper and lower both sides is axially symmetrical, by changing secondary salient pole 5 shapes, can play the effect of optimizing motor thrust ripple.
Between electric motor primary and upper and lower both sides motor secondary, be equipped with air gap 7.
Referring to Fig. 2, the magnetic field in motor, by the secondary tooth 5 of electric motor primary 1, permanent magnet 3, two-layer air gap 7 and motor both sides, secondary yoke portion 4 formation closed-loop paths unshakable in one's determination, reduces inductance to realize, and improves the object of power factor.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. bilateral primary permanent magnet vernier linear electric motors, is characterized in that: this motor comprises electric motor primary and motor secondary;
Described electric motor primary comprises elementary iron core (1), armature winding (2) and permanent magnet (3); Described elementary iron core (1) is " I " type structure, and dispersed arrangement, forms the tooth slot structure of primary part; Described permanent magnet (3) is mounted on armature tooth surface, and the magnetizing direction of the upper adjacent permanent magnet (3) of same elementary iron core (1) is contrary, and permanent magnet (3) magnetizing direction of the same vertical direction of each elementary iron core (1) is identical; Described armature winding (2) is installed in semi-enclosed slot (6);
Described motor secondary comprises secondary iron core (4) and secondary salient pole (5), and the motor secondary of upper and lower both sides is axially symmetric structure, between electric motor primary and the motor secondary of upper and lower both sides, is equipped with air gap (7); Magnetic field in motor forms closed-loop path by electric motor primary (1) and upper and lower two motor secondary (4).
2. bilateral primary permanent magnet vernier linear electric motors according to claim 1, is characterized in that: the magnetic field in motor forms series connection closed-loop path by the secondary iron core (4) of electric motor primary (1), permanent magnet (3), two-layer air gap (7) and motor both sides.
3. bilateral primary permanent magnet vernier linear electric motors according to claim 1, is characterized in that: this motor carries out work based on magnetic gear effect, and its number of pole-pairs depends on permanent magnetic field number of pole-pairs and secondary teeth groove number, and meet:
，
；
Wherein
p fluxfor motor effective air gap magnetic flux number of pole-pairs,
n tfor secondary salient pole (5) number of teeth,
p pMfor permanent magnetic field number of pole-pairs,
v fluxfor the effective air gap magnetic flux speed of service,
v tfor the secondary speed of service,
g rfor magnetic gear no-load voltage ratio;
Described armature winding (2) carries out coiling according to the number of pole-pairs of effective air gap magnetic flux.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410259315.8A CN104052238A (en) | 2014-06-12 | 2014-06-12 | Bilateral primary permanent magnetic vernier linear motor |
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| CN201410259315.8A CN104052238A (en) | 2014-06-12 | 2014-06-12 | Bilateral primary permanent magnetic vernier linear motor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105391260A (en) * | 2015-11-16 | 2016-03-09 | 江苏大学 | Double-stator permanent-magnetic cursor linear motor and design method for increasing magnetic field modulation effect |
| CN107093947A (en) * | 2017-05-27 | 2017-08-25 | 北京航空航天大学 | Switched relutance linear motor based on many Exciting Windings for Transverse Differential Protection |
| CN107482873A (en) * | 2017-09-27 | 2017-12-15 | 武汉华中数控股份有限公司 | A kind of low reluctance force permanent-magnetism linear motor |
| CN108110987A (en) * | 2017-12-21 | 2018-06-01 | 沈阳工业大学 | Bimorph transducer has grain-oriented Si steel sheet permanent-magnetism linear motor without mover yoke |
| CN110311533A (en) * | 2019-07-15 | 2019-10-08 | 华中科技大学 | A kind of modularization transverse magnetic flux vernier permanent-magnetism linear motor |
| CN110690809A (en) * | 2019-08-19 | 2020-01-14 | 中国矿业大学 | Double-side primary permanent magnet type transverse flux linear motor |
| CN110932521A (en) * | 2019-11-26 | 2020-03-27 | 江苏大学 | Primary permanent magnet bilateral linear magnetic field modulation motor and low magnetic resistance design method thereof |
| CN112688454A (en) * | 2020-12-15 | 2021-04-20 | 大连海事大学 | Permanent-magnet fault-tolerant vernier rim propulsion motor with optimized surface shape of alternating-pole rotor |
| CN113794350A (en) * | 2021-09-13 | 2021-12-14 | 浙江大学 | Asymmetric multi-harmonic excitation permanent magnet linear motor and optimal setting method thereof |
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| JP2005137140A (en) * | 2003-10-30 | 2005-05-26 | Okuma Corp | Linear motor |
| JP2006014391A (en) * | 2004-06-22 | 2006-01-12 | Yaskawa Electric Corp | Linear motor armature, linear motor and flat surface motor |
| US20060076839A1 (en) * | 2004-10-07 | 2006-04-13 | Yoichi Kawai | Linear motor |
| CN101404440A (en) * | 2008-11-17 | 2009-04-08 | 哈尔滨工业大学 | Large-torque non-contact permanent magnet gear transmission based on space magnetic conductance modulation |
| WO2012066868A1 (en) * | 2010-11-16 | 2012-05-24 | 株式会社安川電機 | Linear motor |
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2014
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Patent Citations (5)
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| JP2005137140A (en) * | 2003-10-30 | 2005-05-26 | Okuma Corp | Linear motor |
| JP2006014391A (en) * | 2004-06-22 | 2006-01-12 | Yaskawa Electric Corp | Linear motor armature, linear motor and flat surface motor |
| US20060076839A1 (en) * | 2004-10-07 | 2006-04-13 | Yoichi Kawai | Linear motor |
| CN101404440A (en) * | 2008-11-17 | 2009-04-08 | 哈尔滨工业大学 | Large-torque non-contact permanent magnet gear transmission based on space magnetic conductance modulation |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10541595B2 (en) * | 2015-11-16 | 2020-01-21 | Jiangsu University | Double stator permanent magnet linear motor and design method for increasing magnetic field modulation |
| CN105391260A (en) * | 2015-11-16 | 2016-03-09 | 江苏大学 | Double-stator permanent-magnetic cursor linear motor and design method for increasing magnetic field modulation effect |
| CN107093947A (en) * | 2017-05-27 | 2017-08-25 | 北京航空航天大学 | Switched relutance linear motor based on many Exciting Windings for Transverse Differential Protection |
| CN107482873A (en) * | 2017-09-27 | 2017-12-15 | 武汉华中数控股份有限公司 | A kind of low reluctance force permanent-magnetism linear motor |
| CN108110987A (en) * | 2017-12-21 | 2018-06-01 | 沈阳工业大学 | Bimorph transducer has grain-oriented Si steel sheet permanent-magnetism linear motor without mover yoke |
| CN108110987B (en) * | 2017-12-21 | 2024-01-19 | 沈阳工业大学 | Double-stator rotor-free yoke oriented silicon steel sheet permanent magnet linear motor |
| CN110311533A (en) * | 2019-07-15 | 2019-10-08 | 华中科技大学 | A kind of modularization transverse magnetic flux vernier permanent-magnetism linear motor |
| CN110311533B (en) * | 2019-07-15 | 2020-08-14 | 华中科技大学 | Modular transverse flux vernier permanent magnet linear motor |
| CN110690809A (en) * | 2019-08-19 | 2020-01-14 | 中国矿业大学 | Double-side primary permanent magnet type transverse flux linear motor |
| CN110690809B (en) * | 2019-08-19 | 2021-07-27 | 中国矿业大学 | Double-side primary permanent magnet type transverse flux linear motor |
| CN110932521A (en) * | 2019-11-26 | 2020-03-27 | 江苏大学 | Primary permanent magnet bilateral linear magnetic field modulation motor and low magnetic resistance design method thereof |
| WO2021103246A1 (en) * | 2019-11-26 | 2021-06-03 | 江苏大学 | Primary permanent magnet bilateral linear magnetic field modulation electric motor and low magnetic resistance design method therefor |
| CN110932521B (en) * | 2019-11-26 | 2022-02-15 | 江苏大学 | Primary permanent magnet bilateral linear magnetic field modulation motor and low magnetic resistance design method thereof |
| CN112688454A (en) * | 2020-12-15 | 2021-04-20 | 大连海事大学 | Permanent-magnet fault-tolerant vernier rim propulsion motor with optimized surface shape of alternating-pole rotor |
| CN113794350A (en) * | 2021-09-13 | 2021-12-14 | 浙江大学 | Asymmetric multi-harmonic excitation permanent magnet linear motor and optimal setting method thereof |
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Application publication date: 20140917 |