CN101299560B - Flux switching type axial magnetic field permanent magnet brushless motor - Google Patents
Flux switching type axial magnetic field permanent magnet brushless motor Download PDFInfo
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- CN101299560B CN101299560B CN2008100197832A CN200810019783A CN101299560B CN 101299560 B CN101299560 B CN 101299560B CN 2008100197832 A CN2008100197832 A CN 2008100197832A CN 200810019783 A CN200810019783 A CN 200810019783A CN 101299560 B CN101299560 B CN 101299560B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/64—Electric machine technologies in electromobility
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Abstract
A magnetic flux switch type axial magnetic field permanent magnet brushless machine relates to a double air gap permanent magnet machine composed of two stators (1) and a rotor (2), wherein the stators (1) and a rotor (2) are arranged axially; the rotor (2) is clamped between two stators (1); the air gap with certain thickness is arranged between the stator (1) and the rotor (2); each stator (1) is composed of 12 U-shaped stator cores (3), 12 sector permanent magnets (4) and 12 coil2 (5); the U-shaped stator cores (3) and the sector permanent magnets (4) are put alternately to constitute the disc; the U-shaped stator core (3) and the permanent magnet (4) are respectively corresponding on the two stators (1), but the magnetizing directions of the two corresponding permanent magnets are opposite. The simple structure advances the operation reliability and the dynamic performance of the motor, meanwhile the axial size is smaller, which is suitable for the place requiring the thin mount, such as the robot, the computer peripherals, the electric automobiles and the wind electric power generation and the like.
Description
Technical field
What the present invention relates to is a kind of flux switching type axial magnetic field permanent magnet brushless motor, is to the improvement of traditional axial magnetic field permanent magnet brushless electric machine, belongs to the magneto technical field.
Background technology
Traditional axial magnetic field permanent magnet brushless electric machine adopts its magnetic loading of slotless configuration little, has groove structure power density higher but make difficulty, needs to use special equipment.Though be single air gap or two air-gap shaft to magnetic field permanent magnet brushless motor, rotor all is to be bonded on solid steel or the silicon steel sheet by high performance permanent magnetic materials to constitute.Because this motor is placed on permanent magnet on the rotor, centrifugal force when running up for overcoming, need take special ancillary method to rotor, as the fixture made by stainless steel or non-metallic fibers material etc. is installed, this has increased the complexity of rotor structure undoubtedly, has also improved the manufacturing cost of motor.Simultaneously, permanent magnet is positioned at rotor, and cooling condition is poor, heat radiation difficulty, and higher temperature rise may finally cause permanent magnet generation irreversible demagnetization, and the restriction motor exerts oneself, reduces the power density of motor etc., restricted the further raising of motor performance.
Magneticflux-switching type magneto by French scholar E.Hoang proposition, this motor is placed on permanent magnet on the stator, like this, rotor simple in structure, not only do not have winding but also do not have permanent magnet on the rotor, avoided the problems referred to above, but this motor is the radial magnetic field motor, be not suitable for being strict with the occasion of slim installation, single gap structure makes power of motor density low.
Summary of the invention
Technical problem: the problem at traditional axial magnetic field permanent magnet brushless electric machine and the existence of Magneticflux-switching type magneto for improving the axial magnetic field permanent magnet motor performance, the present invention proposes a kind of flux switching type axial magnetic field permanent magnet brushless motor.
Technical scheme: magnetic flow switching type axial magnetic field magnetoelectric machine proposed by the invention is by two stators and the two air gap permanent magnet motors that rotor constitutes, and stator and rotor coaxial are installed, and rotor folds up between two stators, leaves air-gap between rotor and the stator." the basic motor " that stator unit/5 rotor pole that this motor is made up of 6 U-shaped stator cores and 6 permanent magnets is combined into carries out 2 multiples and expands and obtain, and basic motor carried out integral multiple expand, and can obtain the motor of 6a/5a structure, and wherein a is a positive integer.
The structure of two stators is just the same, and about the rotor symmetry; Typical structure is that each stator comprises 12 U-shaped stator cores, 12 fan-shaped permanent magnets and 12 concentrated windings that coil is formed, U-shaped stator core and fan-shaped permanent magnet are alternately placed and are constituted disk, and symmetrical two the permanent magnet excitation directions of two stators are opposite; 12 coils are divided into three-phase, and per four coils series connection constitutes a phase winding, and each coil is on the tooth of two U-shaped stator cores, and the centre embeds permanent magnet, and permanent magnet alternately magnetizes along circumferencial direction.Rotor has 10 teeth, is called 10 rotor poles, evenly is arranged on the excircle of the non-magnetic conduction annulus of rotor.The tooth of U-shaped stator core and rotor pole all are parallel teeth, or sector.
Beneficial effect: magnetic flow switching type axial magnetic field magnetoelectric machine proposed by the invention, concentrated the advantage of traditional axial magnetic field permanent magnet brushless electric machine and Magneticflux-switching type magneto.The power density height has simple rotor structure and short axial dimension, has overcome permanent magnet and has been placed on a series of problems that produce on the rotor, as described in the background art, has improved the motor stabilizing reliability of operation.Stator adopts " U " shape unit core, and is easily manufactured with respect to conventional axial magnetic field permanent magnet motor; Because rotor structure is simple, does not only have permanent magnet but also do not have winding, moment of inertia is very little, has good fast reaction performance, has improved the dynamic property of motor; Axial dimension is less simultaneously, is well suited for being strict with the occasion of slim installation.
Description of drawings
Fig. 1 is the axial deployed configuration schematic diagram of magnetic flow switching type axial magnetic field magnetoelectric machine,
Fig. 2 is the plane outspread drawing of magnetic flow switching type axial magnetic field magnetoelectric machine,
Have among the above figure: stator 1, rotor 2, rotor pole 17, non-magnetic conduction annulus 18, stator core 3, permanent magnet 4 is concentrated winding 5,6,7,8,9,10,11,12,13,14,15,16.
Embodiment
The stator 1 that this motor is made up of 6 U-shaped stator cores 3 and 6 permanent magnets 4 and 5 rotor poles 17 are combined into the basic motor of 6/5 structure, stator 1, the rotor pole 17 of basic motor are carried out the integral multiple expansion, can obtain the motor of 6a/5a structure, wherein a is a positive integer.
As shown in Figure 1, flux switching type axial magnetic field permanent magnet brushless motor is by two stators 1 and the two air gap permanent magnet motors that rotor 2 constitutes, stator 1 and rotor 2 coaxial installations, rotor 2 folds up between two stators 1, leaves certain thickness air-gap between rotor 2 and the stator 1.The structure of two stators 1 is just the same, and about rotor 2 symmetries; Each stator 1 all is made up of 3,12 fan-shaped permanent magnets 4 of 12 U-shaped stator cores and 12 concentrated windings 5, U-shaped stator core 3 and fan-shaped permanent magnet 4 are alternately placed and are constituted disk, U-shaped stator core 3 in two stators 1 and permanent magnet 4 all are corresponding respectively, but corresponding two permanent magnet 4 excitation direction are opposite; 12 concentrating coils 5 are divided into three-phase, and per four coils series connection constitutes a phase winding, and each coil is on the tooth of two U-shaped stator cores 3, and the middle permanent magnet 4 that embeds, permanent magnet 4 alternately magnetize along circumferencial direction.Rotor 2 has 10 teeth, is called 10 rotor poles 17, evenly is arranged on the excircle of rotor 2 non-magnetic conduction annulus 18.
Each coil is across on the tooth of two U-shaped stator cores 3, and permanent magnet 4 is embedded in the centre of two U-shaped stator core 3 teeth, and permanent magnet 4 alternately magnetizes along circumferencial direction.U-shaped stator core 3 is formed by punching silicon-steel.Rotor 2 is simple in structure, does not only have permanent magnet but also do not have coil, and rotor has 10 teeth, is called 10 utmost points.Rotor pole 2 also is made of towards folded the silicon steel sheet of high permeability.
As shown in Figure 2, the a certain utmost point of rotor faces stator tooth, if top stator is perpendicular to paper inwards over against the coil left side conductor current direction of rotor pole, the sense of current of another conductor of this coil (right conductor) is outside perpendicular to paper, the sense of current in the coil left and right sides conductor of the following stator that coil is relative is then opposite therewith, the sense of current that is left conductor is that the vertical paper of the sense of current of right conductor is outside perpendicular to paper inwards.According to Ampere's law, two stator electrical conductors all are subjected to level Ampere force left.Because coil stationary is on stator, can not rotate, according to the relation of active force and reaction force, rotor will be subjected to level Ampere force to the right, so rotor will move right, and so just realize the electric operation of motor.
Magneto of the present invention also can be used as generator operation.When external prime mover drags rotor when rotating continuously, the permanent magnetism magnetic linkage in the armature winding changes the three-phase induction electromotive force that will produce sine in winding, links with load, with regard to exportable alternating current, has promptly realized the generator operation of motor.
Claims (3)
1. flux switching type axial magnetic field permanent magnet brushless motor, it is characterized in that two air gap permanent magnet motors that this motor is made of two stators (1) and a rotor (2), stator (1) and the coaxial installation of rotor (2), rotor (2) folds up between two stators (1), leaves air-gap between rotor (2) and the stator (1); The structure of two stators (1) is just the same, and about rotor (2) symmetry; Each stator (1) comprises 12 U-shaped stator cores (3), 12 fan-shaped permanent magnets (4) and 12 concentrated windings (5) that coil is formed, U-shaped stator core (3) and fan-shaped permanent magnet (4) are alternately placed and are constituted disk, and symmetrical two permanent magnets (4) excitation direction of two stators (1) is opposite; 12 coils are divided into three-phase, and per four coils series connection constitutes a phase winding, and each coil is on the tooth of two U-shaped stator cores (3), and the centre embeds permanent magnet (4), and permanent magnet (4) alternately magnetizes along circumferencial direction; Rotor (2) has 10 teeth, is called 10 rotor poles (17).
2. flux switching type axial magnetic field permanent magnet brushless motor according to claim 1 is characterized in that 10 rotor poles (17) evenly are arranged on the excircle of the non-magnetic conduction annulus of rotor (2) (18).
3. flux switching type axial magnetic field permanent magnet brushless motor according to claim 1 is characterized in that the tooth of U-shaped stator core (3) and rotor pole (17) all are parallel teeth, or sector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100197832A CN101299560B (en) | 2008-03-14 | 2008-03-14 | Flux switching type axial magnetic field permanent magnet brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100197832A CN101299560B (en) | 2008-03-14 | 2008-03-14 | Flux switching type axial magnetic field permanent magnet brushless motor |
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| Publication Number | Publication Date |
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| CN101299560A CN101299560A (en) | 2008-11-05 |
| CN101299560B true CN101299560B (en) | 2010-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100197832A Expired - Fee Related CN101299560B (en) | 2008-03-14 | 2008-03-14 | Flux switching type axial magnetic field permanent magnet brushless motor |
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Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976898A (en) * | 2010-11-01 | 2011-02-16 | 深圳市轴心自控技术有限公司 | Novel motor |
| CN102223036B (en) * | 2011-06-16 | 2013-12-04 | 东南大学 | Hybrid excitation E-shaped iron core axial magnetic field permanent magnet brushless motor |
| CN103166393A (en) * | 2013-03-15 | 2013-06-19 | 常熟萌泰电气科技有限公司 | Axial magnetic field motor |
| JP6116298B2 (en) | 2013-03-15 | 2017-04-19 | 本田技研工業株式会社 | Arrangement structure of rotating electrical machine unit |
| CN103390978B (en) * | 2013-07-18 | 2016-03-16 | 东南大学 | A kind of bimorph transducer disc type mixed excitation electric machine |
| CN103715848B (en) * | 2013-09-30 | 2015-11-18 | 东南大学 | A kind of axial magnetic field stator partition type Magneticflux-switching type memory electrical machine |
| CN103647382B (en) * | 2013-12-27 | 2016-07-20 | 南京航空航天大学 | Bimorph transducer high power density magnetic flux switch permanent magnet motor |
| CN104505962B (en) * | 2015-01-16 | 2018-01-09 | 山东理工大学 | A kind of flux switch motor of axial excitation |
| CN104779754B (en) * | 2015-05-12 | 2018-02-06 | 南通大学 | Double winding axial magnetic field magnetic flux switches fault-tolerant motor |
| CN105245073B (en) * | 2015-11-16 | 2017-11-14 | 南京理工大学 | Stator permanent magnetic type double-salient-pole disc type electric machine |
| CN105429560B (en) * | 2015-12-10 | 2018-04-06 | 南通大学 | A kind of axial magnetic flux switch permanent magnet motor failure tolerant control method |
| CN105811674A (en) * | 2016-05-28 | 2016-07-27 | 杨永清 | Method for manufacturing permanent magnet power generators with equal-diameter stator and rotor combinations |
| CN110518766B (en) * | 2018-05-22 | 2021-02-12 | 南京理工大学 | Asymmetric double-stator mixed excitation type axial magnetic field flux switching motor |
| US11936246B2 (en) * | 2018-11-05 | 2024-03-19 | Carnegie Mellon University | Axial flux motor |
| CN112311181A (en) * | 2020-10-29 | 2021-02-02 | 东南大学 | Disk type motor with adjustable split stator magnetic field |
| CN113922614B (en) * | 2021-09-16 | 2022-09-30 | 西安理工大学 | Fifteen-phase stator hybrid permanent magnet axial flux permanent magnet motor |
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- 2008-03-14 CN CN2008100197832A patent/CN101299560B/en not_active Expired - Fee Related
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Assignee: Jiangsu China Aviation Power Control Co., Ltd. Assignor: Southeast University Contract record no.: 2012320000269 Denomination of invention: Flux switching type axial magnetic field permanent magnet brushless motor Granted publication date: 20101027 License type: Exclusive License Open date: 20081105 Record date: 20120321 |
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