CN201174647Y - Permanent magnetic brushless motor - Google Patents
Permanent magnetic brushless motor Download PDFInfo
- Publication number
- CN201174647Y CN201174647Y CNU2008200329678U CN200820032967U CN201174647Y CN 201174647 Y CN201174647 Y CN 201174647Y CN U2008200329678 U CNU2008200329678 U CN U2008200329678U CN 200820032967 U CN200820032967 U CN 200820032967U CN 201174647 Y CN201174647 Y CN 201174647Y
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Abstract
The utility model provides a r permanent-magnetic brushless motor, relating to a magnetic flux switching type axial magnetic field permanent-magnetic brushless motor, which is an improvement on the prior axial magnetic field permanent-magnetic brushless motor. The motor is a double-air-gap permanent-magnetic motor formed by two stators (1) and one rotor (2); the stators (1) and the rotor (2) are coaxially arranged; the rotor (2) is clamped between the two stators (1); and air gaps are reserved between the rotor (2) and the stators (1). The stators (1) consisting of six U-shaped stator cores (3) and six permanent magnets (4) is combined with five rotor poles (17) into a basic motor with a 6/5 structure, and then the stators (1) and the rotor poles (17) of the basic motor are extended by integral multiple, and then a motor with a 6a/5a structure is contained, wherein a is a positive integer. As the rotor is simple in structure, free from permanent magnets and windings, little in rotational inertia and excellent in quick response performance, and the dynamic performance of the motor is improved; meanwhile, the motor is small in axial size and very suitable for the occasions with strict requirements on thin-type installation.
Description
Technical field
The utility model relates to 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 utility model proposes a kind of permanent magnetic brushless.
Technical scheme: the magnetic flow switching type axial magnetic field magnetoelectric machine that the utility model proposed is by two stators and the two air gap permanent magnet motors that rotor constitutes, stator and rotor coaxial are installed, 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: the permanent magnetic brushless that the utility model proposed, 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 permanent magnetic brushless,
Fig. 2 is the plane outspread drawing of permanent magnetic brushless,
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, permanent magnetic brushless is by two stators 1 and the two air gap permanent magnet motors that rotor 2 constitutes, stator 1 and rotor 2 coaxial installations, and 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 utility model 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 (5)
1. permanent magnetic brushless, 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) folds up between two stators (1) with the coaxial installation of rotor (2), rotor (2), leaves air-gap between rotor (2) and the stator (1).
2. permanent magnetic brushless according to claim 1, it is characterized in that 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.
3. permanent magnetic brushless according to claim 1 is characterized in that 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.
4. permanent magnetic brushless according to claim 1 is characterized in that rotor (2) has 10 teeth, is called 10 rotor poles (17), evenly is arranged on the excircle of the non-magnetic conduction annulus of rotor (2) (18).
5. permanent magnetic brushless 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 |
|---|---|---|---|
| CNU2008200329678U CN201174647Y (en) | 2008-03-14 | 2008-03-14 | Permanent magnetic brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200329678U CN201174647Y (en) | 2008-03-14 | 2008-03-14 | Permanent magnetic brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201174647Y true CN201174647Y (en) | 2008-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200329678U Expired - Fee Related CN201174647Y (en) | 2008-03-14 | 2008-03-14 | Permanent magnetic brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201174647Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682641A (en) * | 2015-03-04 | 2015-06-03 | 广东威灵电机制造有限公司 | Double-stator axial magnetic field motor |
| CN105978270A (en) * | 2016-07-08 | 2016-09-28 | 江苏大学 | Stator partition type dual salient pole permanent magnetic brushless motor |
-
2008
- 2008-03-14 CN CNU2008200329678U patent/CN201174647Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682641A (en) * | 2015-03-04 | 2015-06-03 | 广东威灵电机制造有限公司 | Double-stator axial magnetic field motor |
| CN105978270A (en) * | 2016-07-08 | 2016-09-28 | 江苏大学 | Stator partition type dual salient pole permanent magnetic brushless motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081231 Termination date: 20110314 |