CN100547889C - Full-magnetic barrier type dual-field excitation linear synchronous generator - Google Patents
Full-magnetic barrier type dual-field excitation linear synchronous generator Download PDFInfo
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- CN100547889C CN100547889C CNB2007101644171A CN200710164417A CN100547889C CN 100547889 C CN100547889 C CN 100547889C CN B2007101644171 A CNB2007101644171 A CN B2007101644171A CN 200710164417 A CN200710164417 A CN 200710164417A CN 100547889 C CN100547889 C CN 100547889C
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- permanent magnet
- iron core
- excitation winding
- synchronous generator
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Abstract
The invention discloses a kind of full-magnetic barrier type dual-field excitation linear synchronous generator.It comprises elementary iron core, elementary winding, secondary yoke portion iron core, secondary tooth portion iron core, secondary excitation winding, secondary excitation winding wire casing, permanent magnet, generator and teeth groove, secondary excitation winding is on tooth, be placed in the excitation winding wire casing, 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, and are provided with every magnetic gap at this place.It is mainly used in the multiple occasion that maglev system drives, the logistics line drives.
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, inferior utmost point iron 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 stick on the secondary tooth surface, 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, therefore permanent magnet provides the sectional area of every utmost point magnetic flux to be restricted, and the performance of efficient should be also potential.
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 every permanent magnet that extremely descends provide bigger magnetic flux cross section to amass, to obtain higher efficient.
Principle of the present invention is permanent magnet is tilted to be placed in the secondary yoke portion, each extremely following two permanent magnets pairing is placed, and magnetic shielding structure is set at the two ends of permanent magnet, reduce the leakage field of permanent magnet in secondary yoke portion as far as possible, the magnetic flux that permanent magnet is produced is directed to greatest extent in the effective air gap between the linear electric motors primary and secondary and goes, and makes the suspending power of generation and thrust bigger.
Full-magnetic barrier type dual-field excitation linear synchronous generator of the present invention, comprise elementary iron core, elementary winding, secondary yoke portion iron core, secondary tooth portion iron core, secondary excitation winding, secondary excitation winding wire casing, permanent magnet, the teeth groove of generator and winding coil, secondary excitation winding is on the tooth of each secondary tooth portion iron core, and be placed in the excitation winding wire casing, 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, and are provided with every magnetic gap at this place.
Full-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 magnetic shielding structure is set at the two ends of permanent magnet, 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 to greatest extent in the effective air gap between the linear electric motors primary and secondary and goes the effect that obvious increase is arranged of its 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.Because secondary tooth separates with yoke, permanent magnet is installed also more convenient.
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.
Fig. 2 is two a structural representation every magnetic gap embodiment.
Fig. 3 is three a structural representation every magnetic gap embodiment.
Wherein: 1, elementary iron core; 2, elementary winding; 3, secondary yoke portion iron core; 4, secondary tooth portion iron core; 5, secondary excitation winding; 6, permanent magnet; 7, trapezoidal every the magnetic air groove; 8, (upper end) is every magnetic gap; 9, secondary excitation winding wire casing; 10, (secondary tooth lamination) fixing hole; 11, (secondary yoke lamination) fixing hole; 12, teeth groove; 13, charges.
Embodiment
Below in conjunction with embodiment and accompanying drawing thereof technical solution of the present invention is further described:
Fig. 1 is the embodiment of full-magnetic barrier type dual-field excitation linear synchronous generator of the present invention.It comprises the teeth groove 12 that elementary iron core 1, elementary winding 2, secondary yoke portion iron core 3, secondary tooth portion iron core 4, secondary excitation winding 5, permanent magnet 6, secondary excitation winding wire casing 9, generator and winding coil are used, and secondary excitation winding 5 is on the tooth of each secondary tooth portion iron core 4; It is characterized in that exciting permanent magnet 6 has two at each magnetic pole, tilt to place, corresponding mutually, be fixed in the mounting groove in the middle of the secondary yoke portion iron core 3, become mutually 120 ° angle upwards, the every pair of permanent magnet 6 approaching corresponding end are provided with trapezoidal every magnetic 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 9 are close, and are provided with every magnetic gap 8 at this place.Structure gap width every magnetic gap 8 is 1-3mm.Cross sectional shape is a rectangle every the structure slit of magnetic gap 8.Also can be made as arc or and skew lines shape.Charges 13 in magnetic gap 8 are epoxy resin, or select for use other existing bonding effect that the material of separated magnetic effect is arranged again.The winding coil of generator is placed in the teeth groove 12 on secondary iron core teeth surface.
The permanent magnet upper end has had every magnetic gap, has lacked the magnetic bridge connection, and secondary iron core is divided into yoke portion iron core and tooth portion iron core two parts.Be provided with every the structure slit of magnetic gap specially, in order that can reduce the leakage field of permanent magnet in secondary yoke portion as far as possible.
After twining electric excitation winding on secondary 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.
Figure 2 shows that another kind of cross sectional shape every magnetic gap.Be that the permanent magnet upper end is an arc every the structure slit of magnetic gap cross sectional shape.Other basic structure is identical with Fig. 1.Wherein 3 is secondary yoke portion iron cores, the 4th, and secondary tooth portion iron core, 6 is permanent magnet.What be arranged in the upper end is filled with charges 13 every magnetic gap (arc shaped slits).
Figure 3 shows that another cross sectional shape every magnetic gap.Be that the permanent magnet upper end is a skew lines every the structure slit of magnetic gap cross sectional shape, the incline direction of straight line is perpendicular to the permanent magnet magnetic pole-face.Other basic structure is identical with Fig. 1.
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 full-magnetic barrier type dual-field excitation linear motor can improve suspending power and reach 35%.Estimate that being better than prior art reaches one one-tenth.
Claims (5)
1, a kind of full-magnetic barrier type dual-field excitation linear synchronous generator, comprise elementary iron core (1), elementary winding (2), secondary yoke portion's iron core (3), secondary tooth portion's iron core (4), secondary excitation winding (5), permanent magnet (6), secondary excitation winding wire casing (9), the teeth groove (12) on the surface of secondary tooth portion's iron core (4), secondary excitation winding (5) is on the tooth of each secondary tooth portion's iron core (4), it is characterized in that exciting permanent magnet (6) has two at each magnetic pole, tilt to place, corresponding mutually, be fixed in the middle caulking groove of secondary yoke portion's iron core (3), 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 (9) are close, and are provided with every magnetic gap (8) at this place.
2,, it is characterized in that described cross section every magnetic gap (8) is a rectangle according to the described full-magnetic barrier type dual-field excitation linear synchronous generator of claim 1.
3,, it is characterized in that described cross section every magnetic gap (8) is an arc according to the described full-magnetic barrier type dual-field excitation linear synchronous generator of claim 1.
4,, it is characterized in that described cross section every magnetic gap (8) is a skew lines shape according to the described full-magnetic barrier type dual-field excitation linear synchronous generator of claim 1.
5,, it is characterized in that described width every magnetic gap (8) is 1-3mm according to the described full-magnetic barrier type dual-field excitation linear synchronous generator of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101644171A CN100547889C (en) | 2007-11-29 | 2007-11-29 | Full-magnetic barrier type dual-field excitation linear synchronous generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101644171A CN100547889C (en) | 2007-11-29 | 2007-11-29 | Full-magnetic barrier type dual-field excitation linear synchronous generator |
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| Publication Number | Publication Date |
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| CN101179224A CN101179224A (en) | 2008-05-14 |
| CN100547889C true CN100547889C (en) | 2009-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007101644171A Expired - Fee Related CN100547889C (en) | 2007-11-29 | 2007-11-29 | Full-magnetic barrier type dual-field excitation linear synchronous generator |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882856B (en) * | 2009-12-24 | 2012-06-27 | 哈尔滨工业大学 | Inter-phase electromagnetic decoupling flat permanent magnet synchronous straight line motor |
| CN105696829A (en) * | 2016-04-05 | 2016-06-22 | 江南大学 | Magnetic suspension circulating stereo garage integrated with building in residence community |
| CN108584445A (en) * | 2018-01-18 | 2018-09-28 | 佛山科学技术学院 | A kind of remote-controllable magnetic levitation transmission system |
| CN213661413U (en) * | 2020-09-03 | 2021-07-09 | 瑞声科技（南京）有限公司 | Linear motor |
| CN213125816U (en) * | 2020-09-03 | 2021-05-04 | 瑞声科技（南京）有限公司 | Linear motor |
| CN214177116U (en) * | 2020-09-29 | 2021-09-10 | 瑞声科技(新加坡)有限公司 | Linear motor |
| IT202100001292A1 (en) * | 2021-10-21 | 2023-04-21 | Vincenzo Franzitta | LINEAR GENERATOR WITH PERMANENT MAGNETS |
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2007
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| CN101179224A (en) | 2008-05-14 |
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