CN101179223B - Semi-magnetic barrier type dual-field excitation linear synchronous generator - Google Patents
Semi-magnetic barrier type dual-field excitation linear synchronous generator Download PDFInfo
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- CN101179223B CN101179223B CN2007101644167A CN200710164416A CN101179223B CN 101179223 B CN101179223 B CN 101179223B CN 2007101644167 A CN2007101644167 A CN 2007101644167A CN 200710164416 A CN200710164416 A CN 200710164416A CN 101179223 B CN101179223 B CN 101179223B
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- 230000005284 excitation Effects 0.000 title claims abstract description 67
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 13
- 230000004888 barrier function Effects 0.000 title claims description 8
- 238000004804 winding Methods 0.000 claims abstract description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000000725 suspension Substances 0.000 abstract description 4
- 238000003780 insertion Methods 0.000 abstract description 2
- 230000037431 insertion Effects 0.000 abstract description 2
- 230000004907 flux Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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Abstract
The invention discloses a half-separated magnetic linear synchronous motor with double excitation. The motor includes a primary iron core, a primary winding group, a secondary iron core, a secondary excitation winding group, a secondary wire chase for excitation magnetic winding group, permanent magnets, a generator and a gear socket, wherein, the secondary excitation winding group is winded on the gear and is positioned inside the secondary wire chase for the excitation winding group. The invention is characterized in that: each magnetic pole has two permanent magnets which are inclined opposite to each other and are fixed inside an insertion slot at the middle of a secondary yoke part beneath for excitation; the two permanent magnets are inclined for 120 degrees upwardly; nearby ends oneach pair of permanent magnets are provided with trapeziform separated magnetic atmosphere; the facing directions of the same polar on two permanent magnets under the same magnetic pole are the same;a N magnetic pole and an S magnetic pole are distributed with interval along the length direction of the secondary yoke part; the top end of the permanent magnet is near the secondary wire chase for the excitation winding group and is confected with a magnetic bridge of the secondary iron core. The secondary iron core has a good integrity and greatly increases the suspension force and pulling force of the motor under the same condition. The invention is mainly used in a plurality of fields for driving in magnetic suspension traffic systems and physical distribution lines.
Description
Technical field
The invention belongs to linear synchronized motor.The linear synchronous generator of specifically a kind of long stator (elementary) composite excitation.
Technical background
Traditional linear synchronous generator has two kinds of independent excitation modes, and a kind of is the electric excitation of utilizing the direct current winding to produce, and this excitation mode can be regulated the size of suspending power and thrust by the size of regulating exciting current; Another kind is to provide excitation field by permanent magnet, owing to there is not the excitation electrical piano power loss, the efficient of this excitation mode is higher, but shortcoming is the size that can't regulate excitation field, also just can't control the size of suspending power and thrust by regulating excitation.Therefore, the mode of composite excitation obtains extensive concern and begins to obtain using, and the application study in the linear electric motors field has also had remarkable progress.
Chinese patent 03129181.3 disclosed " long stator synchronous linear motor of permanent magnetism and electromagnetic hybrid excitation ".It comprises excitation winding, pole core, long stator iron core and armature winding.The winding coil of DC generator is embedded in the surperficial teeth groove of time utmost point iron core; And inferior utmost point iron core is embedded with permanent magnet, and permanent magnet is embedded at inferior utmost point tooth middle part and near yoke; The polarity of permanent magnet is consistent with excitation winding electricity excitation polar orientation, provides exciting current by linear electric generator.Thereby improving excitation magnetic potential reaches 11850 ampere-turns and suspension air gap height and reaches and be at least 0.15 centimetre (exciting current is under the 25 peace situations).Specifically, its permanent magnet is flat to be embedded in the secondary tooth near yoke, or sticks on the secondary tooth surface, and it is identical with the sectional area of tooth that the permanent magnet that is to say each utmost point provides the sectional area of magnetic flux, usually permanent magnet provides the sectional area of every utmost point magnetic flux to be restricted, and can influence the efficient performance.
Summary of the invention
The present invention is to provide a kind of linear synchronous generator that permanent magnet and the two excitations of direct current excitation winding are arranged.It can utilize the efficient field performance of permanent magnet, make motor under same volume, produce bigger suspending power and thrust, utilizing electric excitation winding adjusting excitation field size, when playing flexible control suspending power and thrust, make the permanent magnet of every utmost point can provide bigger magnetic flux cross section to amass, thereby obtain higher efficient.
Principle of the present invention is permanent magnet is tilted to be placed in the secondary yoke portion, and each extremely following two permanent magnets pairing is placed, and is provided with trapezoidally every the magnetic air groove between the two permanent magnet bottoms, and the upper end is the magnetic bridge syndeton.Though the magnetic bridge structure has caused the leakage field of permanent magnet in secondary yoke portion to increase, and has guaranteed the structural intergrity of secondary iron core.Smaller value is got in the design of magnetic bridge width as far as possible, makes that magnetic field herein is easier to be saturated, to reduce the leakage flux by magnetic bridge as far as possible; The magnetic bridge width is too small, influences mechanical strength again, should choose suitable value.The thickness of permanent magnet mounting groove is larger than the thickness of permanent magnet in the secondary yoke portion iron core, to make things convenient for the installation of permanent magnet.After permanent magnet is put in the groove, and between cell wall even need not to stick with glue and connect.
Semi-magnetic barrier type dual-field excitation linear synchronous generator of the present invention, comprise elementary iron core, elementary winding, secondary iron core, secondary excitation winding, permanent magnet, trapezoidal teeth groove every magnetic space, secondary iron core teeth surface, secondary excitation winding is around each secondary iron core teeth portion, it is characterized in that being equipped with under each magnetic pole two exciting permanent magnets, tilt to place, corresponding mutually, be fixed in the caulking groove in the middle of the secondary yoke portion, two permanent magnets be inclined to 120 ° angle upwards, the every pair of approaching corresponding end end of permanent magnet is provided with the airspace every magnetic; The face of the same polarity of two permanent magnets under the same magnetic pole is towards identical, and N, S magnetic pole are alternately distributed in secondary iron core; Upper end that permanent magnet separates and secondary excitation winding wire casing are close, are connected by the magnetic bridge of secondary iron core.
Semi-magnetic barrier type dual-field excitation linear synchronous generator of the present invention, because permanent magnet is tilted to be placed in the secondary yoke portion, and reduced the leakage field of permanent magnet in secondary yoke portion as far as possible, the magnetic flux that permanent magnet is produced is directed into as much as possible in the effective air gap between the linear electric motors primary and secondary and goes, and has reached the effect that increases suspending power and thrust.
Simultaneously owing to adopt permanent magnet and direct current excitation winding composite excitation structure, kept electric excitation regulation advantage and permanent magnet excitation advantage efficiently flexibly, make the adjusting of suspending power, thrust and efficient excitation obtain taking into account.
Compare with surperficial adhesive type structure, have bigger every utmost point permanent magnet to provide magnetic flux cross section long-pending, and better anti-degaussing ability is arranged, it is also stronger to lay permanent magnet position heat-sinking capability.In addition, motor is easier for installation, and structural integrity is good.
It is mainly used in multiple occasions such as maglev system driving, the driving of logistics line.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Wherein: 1, elementary iron core; 2, elementary winding; 3, secondary iron core; 4, secondary excitation winding; 5, secondary excitation winding wire casing; 6, permanent magnet; 7, trapezoidal every the magnetic air groove; 8, magnetic bridge connecting portion; 9, secondary lamination fixing hole; 10, teeth groove.
Embodiment
Below in conjunction with embodiment and accompanying drawing thereof technical solution of the present invention is further described:
Fig. 1 is the basic structure schematic diagram of semi-magnetic barrier type dual-field excitation linear synchronous generator of the present invention.It comprises the teeth groove 10 on elementary iron core 1, elementary winding 2, secondary iron core 3, secondary excitation winding 4, secondary excitation winding wire casing 5, permanent magnet 6, secondary iron core teeth surface, secondary excitation winding 4 is on each secondary tooth, it is characterized in that exciting permanent magnet 6 has two at each magnetic pole, tilt to place, corresponding mutually, be fixed in the caulking groove in the secondary yoke portion, become mutually 120 ° angle upwards, the every pair of permanent magnet 6 approaching corresponding end are provided with the trapezoidal air groove 7 every magnetic; The face of two permanent magnet 6 identical polars is towards unanimity under same magnetic pole, and N, S magnetic pole are alternately distributed along secondary yoke minister degree direction; The upper end of permanent magnet 6 and secondary excitation winding wire casing 5 are close, are connected by the magnetic bridge of secondary iron core.It has kept the globality of secondary iron core, and the magnetic bridge width is preferably 1-3mm.The winding coil of mobile generator is placed in the teeth groove 10 on secondary iron core teeth surface.
Though the magnetic bridge 8 of secondary iron core marginal portion can cause the leakage field of permanent magnet in secondary yoke portion to increase, it has guaranteed the mechanical integrity of secondary core structure.The magnetic bridge width will be got fractional value as far as possible, and it is saturated to make that secondary yoke portion magnetic field herein is easier to, and can reduce the magnetic leakage flux by magnetic bridge as far as possible.But too small magnetic bridge width will influence the mechanical strength of secondary iron core, is preferably 1-3mm.The thickness of permanent magnet caulking groove is more bigger than the thickness of permanent magnet in secondary, and convenient the installation gets final product.After permanent magnet was put into groove, the filling that just need do in case of necessity between cell wall was handled.
Secondary going up after twining electric excitation winding on each tooth constituted an electric field pole, decide according to required total exciting watts and every difference of the equivalent number of ampere turns of permanent magnet of extremely descending in its number of turn and line footpath, and guarantee that the magnetic direction of electric excitation generation is consistent with the magnetic direction that permanent magnet produces; Electricity under a pair of magnetic pole is encouraged the anti-phase series connection of winding, again each is encouraged the winding parallel connection to the electricity of the utmost point.Regulate the excitation field power according to actual needs, play the effect of regulating suspending power and thrust size.
During work, elementaryly fix (as the track of levitation train) in the guide rail mode as long stator, in primary winding coil logical on alternating current, will produce straightaway electromagnetic push with secondary excitation field acting in conjunction.
Secondary as mover, be short secondary structure.The permanent magnet of tilting installation produces permanent magnet excitation magnetic field in secondary, and it provides the constant part of required excitation field; Produce electricity excitation magnetic field pass to direct current in secondary DC excitation winding after, it provides the alternating compenent of required excitation field, because exciting current is adjustable, therefore, this part excitation field is adjustable.These two kinds of excitation fields synthesize total excitation field in air gap, in elementary winding, connect alternating current after, elementary will promote with secondary interaction secondary with the guide rail movement of load along stator formation.During the motor operation, only need to regulate the exciting current of secondary electrical excitation winding, can carry out real-time response, suspending power and load capacity are balanced each other the variation of load.Driving with the magnetic suspension test wire is example, is 256 circles by the electric excitation winding number of turn, electric current 15A estimation, and the purer electric field excitation linear motor of semi-magnetic barrier type dual-field excitation linear motor can improve suspending power and reach 25%.Suspending power is roughly suitable compared with the prior art.
Claims (2)
1. semi-magnetic barrier type dual-field excitation linear synchronous generator, comprise elementary iron core (1), elementary winding (2), secondary iron core (3), secondary excitation winding (4), secondary excitation winding wire casing (5), permanent magnet (6), the teeth groove (10) on secondary iron core teeth surface, secondary excitation winding (4) is on each secondary iron core teeth, it is characterized in that exciting permanent magnet (6) has two at each magnetic pole, tilt to place, corresponding mutually, be fixed on the caulking groove Inner in secondary iron core (3) the yoke portion, become 120 ° angle to make progress mutually, the every pair of approaching corresponding end of permanent magnet is provided with the trapezoidal air groove (7) every magnetic, the face of two permanent magnet identical polars is towards unanimity under same magnetic pole, N, the S magnetic pole is alternately distributed along secondary yoke minister degree direction; The upper end of permanent magnet and secondary excitation winding wire casing (5) are close, are connected by the magnetic bridge of secondary iron core.
2. according to the described semi-magnetic barrier type dual-field excitation linear synchronous generator of claim 1, the width that it is characterized in that described magnetic bridge (8) is 1-3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101644167A CN101179223B (en) | 2007-11-29 | 2007-11-29 | Semi-magnetic barrier type dual-field excitation linear synchronous generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101644167A CN101179223B (en) | 2007-11-29 | 2007-11-29 | Semi-magnetic barrier type dual-field excitation linear synchronous generator |
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| Publication Number | Publication Date |
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| CN101179223A CN101179223A (en) | 2008-05-14 |
| CN101179223B true CN101179223B (en) | 2010-06-09 |
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| CN2007101644167A Expired - Fee Related CN101179223B (en) | 2007-11-29 | 2007-11-29 | Semi-magnetic barrier type dual-field excitation linear synchronous generator |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101850523B (en) * | 2010-03-18 | 2011-12-07 | 沈阳工业大学 | Magnetic suspension feeding platform of liner synchronous motor of digital control machine tool |
| CN102350956B (en) * | 2011-07-19 | 2013-03-27 | 西南交通大学 | Magnetic suspension mechanism integrating suspension, guiding and hauling functions |
| CN109802549B (en) * | 2017-11-16 | 2020-07-31 | 中车株洲电力机车研究所有限公司 | Excitation magnetic pole of synchronous linear motor of high-speed magnetic suspension train |
| CN213125816U (en) * | 2020-09-03 | 2021-05-04 | 瑞声科技（南京）有限公司 | Linear motor |
| CN112671204B (en) * | 2021-01-18 | 2022-07-01 | 哈尔滨工业大学 | Multilayer winding magnetic suspension linear permanent magnet synchronous motor |
| CN114362472B (en) * | 2021-12-28 | 2023-04-25 | 中国人民解放军海军工程大学 | Segmented spliced modular linear motor with intersegmental magnetic field compensation windings and splicing compensation method thereof |
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- 2007-11-29 CN CN2007101644167A patent/CN101179223B/en not_active Expired - Fee Related
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