CN106067700A - Stator punching and motor - Google Patents
Stator punching and motor Download PDFInfo
- Publication number
- CN106067700A CN106067700A CN201610593820.5A CN201610593820A CN106067700A CN 106067700 A CN106067700 A CN 106067700A CN 201610593820 A CN201610593820 A CN 201610593820A CN 106067700 A CN106067700 A CN 106067700A
- Authority
- CN
- China
- Prior art keywords
- stator
- tooth
- boots portion
- motor
- tooth boots
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a kind of stator punching and motor.This stator punching includes: annular stator yoke and the multiple stator tooths being connected with annular stator yoke, multiple stator tooths are along the radial arrangement of annular stator yoke, stator tooth includes the first tooth boots portion and the second tooth boots portion, and the first tooth boots portion is asymmetricly arranged relative to the center line of stator tooth with the second tooth boots portion.Owing to the stator tooth boots portion of the present invention have employed unsymmetric structure, therefore in motor rotary course, improve magnetic flux during motor output torque minimum, the minimum of a value making motor electromagnetic torque increases, do not affect the maximum of motor electromagnetic torque simultaneously, and then achieve electromagnetic torque mean value and increase, and relative to symmetric teeth boots structure, torque pulsation reduces further.
Description
Technical field
The present invention relates to machine field, particularly to a kind of stator punching and motor.
Background technology
In prior art, generally use stator tooth trimming to weaken Gas-gap Magnetic Field Resonance Wave, reduce and concentrate volume structure motor
Torque pulsation, and then improve the vibration noise of motor.Fig. 1 shows the structural representation of stator tooth of the prior art, such as Fig. 1
Shown in, stator punching includes annular stator yoke 1 and the stator tooth 2 being connected with annular stator yoke 1, and wherein, stator tooth 2 is along stator yoke
Endoporus circumference is uniformly distributed, and the lower end (near diameter of stator bore side) of stator tooth 2 extends to circumferential direction and forms the first tooth boots
Portion 3 and the second tooth boots portion 4, and the two is relative to the center line 5 symmetrically mirror image distribution of stator tooth 2.But, use determining of Fig. 1
Sub-tooth edging techniques, although air gap flux density harmonic wave can be weakened, but also reduce the magnetic flux of motor simultaneously, cause motor to export
Torque capacity declines, and then have impact on the efficiency of motor.
Content of the invention
The invention provides a kind of stator punching and motor, during to solve the tooth boots using symmetry in prior art, although
Air gap flux density harmonic wave can be weakened, but also reduce the magnetic flux of motor simultaneously, cause motor output torque ability to decline, and then
The problem that have impact on the efficiency of motor.
For solving the problems referred to above, as one aspect of the present invention, provide a kind of stator punching, comprising: annular stator
Yoke and the multiple stator tooths being connected with annular stator yoke, multiple stator tooths include along the radial arrangement of annular stator yoke, stator tooth
First tooth boots portion and the second tooth boots portion, the first tooth boots portion asymmetricly sets relative to the center line of stator tooth with the second tooth boots portion
Put.
Preferably, stator tooth is only provided with trimming in the first tooth boots portion or the second tooth boots portion.
Preferably, the thickness in the first tooth boots portion is more than the thickness in the second tooth boots portion.
Preferably, stator tooth is positioned inside annular stator yoke, and the first tooth boots portion is provided with the first trimming, the second tooth boots portion
On be provided with the second trimming, the maximum radial distance of the first trimming and stator tooth internal diameter is less than the second trimming and stator tooth internal diameter
Maximum radial distance.
Preferably, the free end in the first tooth boots portion is more than the free end in the second tooth boots portion to center line to the arc length of center line
Arc length.
Present invention also offers a kind of motor, including stator, wherein, described stator includes above-mentioned stator punching.
Present invention also offers a kind of motor, including stator, wherein, described stator includes above-mentioned stator punching, motor
Rotor rotate to the side without trimming of stator tooth from the side of trimming of having of stator tooth.
Present invention also offers a kind of motor, including stator, wherein, described stator includes above-mentioned stator punching, motor
Rotor from direction from the second tooth boots portion to the first tooth boots portion rotate.
Present invention also offers a kind of motor, including stator, wherein, described stator includes above-mentioned stator punching, motor
Rotor from direction from the second tooth boots portion to the first tooth boots portion rotate.
Present invention also offers a kind of motor, including stator, wherein, described stator includes above-mentioned stator punching, motor
Rotor from direction from the second tooth boots portion to the first tooth boots portion rotate.
Owing to the stator tooth boots portion of the present invention have employed unsymmetric structure, therefore in motor rotary course, improve electricity
Magnetic flux when machine output torque is minimum so that the minimum of a value of motor electromagnetic torque increases, does not affect motor electromagnetic simultaneously
The maximum of torque, and then achieve electromagnetic torque mean value and increase, and relative to symmetric teeth boots structure, torque pulsation
Reduce further.
Brief description
Fig. 1 schematically shows the structural representation of stator punching of the prior art；
Fig. 2 schematically shows the structural representation of the stator punching in first embodiment of the invention；
Fig. 3 schematically shows the enlarged drawing of the stator tooth in first embodiment of the invention；
Fig. 4 schematically shows the structural representation of the stator punching in second embodiment of the invention；
Fig. 5 schematically shows the structural representation of the stator punching in third embodiment of the invention；
Fig. 6 schematically shows the structural representation of the stator punching in fourth embodiment of the invention；
Fig. 7 schematically shows the comparison diagram of the present invention and the electromagnetic torque waveform of prior art；
Fig. 8 schematically shows tooth boots without trimming, symmetrical trimming and electromagnetic torque shape comparison diagram during asymmetric trimming；
Fig. 9 schematically shows tooth boots without trimming, symmetrical trimming and technique effect comparison diagram during asymmetric trimming.
Reference in figure: the 1st, annular stator yoke；2nd, stator tooth；3rd, the first tooth boots portion；4th, the second tooth boots portion；5th, center
Line.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the present invention can be defined by the claims
Implement with the multitude of different ways covering.
In prior art, the tooth boots portion of each stator tooth in stator punching is symmetrical arranged with regard to stator tooth center line, i.e.
It is mirror with regard to center line, for reducing the torque pulsation of motor, generally use tooth boots portion's trimming structure to weaken air-gap field
Harmonic wave, but decrease the effective flux of motor simultaneously so that motor is exerted oneself and is diminished.Due to the existence of air gap flux density harmonic wave,
The electromagnetic torque of motor is in the pulsating wave containing crest and trough, and the difference of crest and trough illustrates the torque pulsation of motor,
If the valley value that can make torque increases, and crest value is constant, it is possible to decrease the torque pulsation of motor, increases average electromagnetism simultaneously and turns
Square value.
Through researching and analysing discovery, the tooth boots portion of stator tooth center line both sides have impact on peak value and the paddy of torque pulsation respectively
Value, when the tooth boots portion of both sides is set to dissymmetrical structure, it is possible to achieve improves torque valley value, ensures torque crest value simultaneously
Constant.
Refer to Fig. 2 to Fig. 6, the invention provides a kind of stator punching, including annular stator yoke 1 and multiple along ring-type fixed
The equally distributed stator tooth of circumference 2 of sub-yoke 1, wherein, stator tooth 2 along annular stator yoke 1 radial direction with in annular stator yoke 1
Side connects.Certainly, stator tooth 2 also can be connected along the outside of the radial direction of annular stator yoke 1 and annular stator yoke 1.As in figure 2 it is shown,
Each stator tooth 2 includes the first tooth boots portion 3 and the second tooth boots portion 4, and wherein, the first tooth boots portion 3 and the second tooth boots portion 4 are all along ring-type
Stator yoke 1 circumferentially extending, the first tooth boots portion 3 is positioned at the first side of the center line of stator tooth 2, and the second tooth boots portion 4 is positioned at this
Second side of center line.Especially, in the present invention the first tooth boots portion 3 and the second tooth boots portion 4 relative to the center line 5 of stator tooth 2
Asymmetricly arranging, the two has different shapes in other words.Stator punching can use neodymium iron boron or ferrite or other permanent magnetism
Material is made.
Fig. 7 shows the comparison diagram that have employed the present invention and electromagnetic torque during stator punching of the prior art.Such as Fig. 7
Shown in, owing to the stator tooth boots portion of the present invention have employed unsymmetric structure, therefore in motor rotary course, improve motor defeated
Go out magnetic flux during torque minimum so that the minimum of a value of motor electromagnetic torque increases, do not affect motor electromagnetic torque simultaneously
Maximum, and then achieve electromagnetic torque mean value and increase, and relative to symmetric teeth boots structure, torque pulsation enters one
Step reduces.In the embodiment of the present invention, it is achieved that electromagnetic torque exports increase by 5%, torque pulsation reduces by 12%.Visible, the present invention
Motor torque fan-out capability can be improved while reducing motor torque ripple.
In order to realize above-mentioned unsymmetric structure, the invention provides multiple embodiment.
In the first embodiment shown in Fig. 3, stator tooth 2 is only arranging trimming, and does not has limit to cut at another side, also
That is be only provided with trimming a in the first tooth boots portion 3 or the second tooth boots portion 4.
In the second embodiment shown in Fig. 4, by making the thickness more than the second tooth boots portion 4 for the thickness h 1 in the first tooth boots portion 3
Degree h2 realizes above-mentioned unsymmetric structure.By adjusting the ratio of h1 and h2, motor capacity can be increased further.
In the 3rd embodiment shown in Fig. 5, stator tooth 2 is positioned inside annular stator yoke 1, the first tooth boots portion 3 and second
Being provided with trimming in tooth boots portion 4, wherein, the trimming in the first tooth boots portion 3 is referred to as the first trimming, in the second tooth boots portion 4
Trimming is referred to as the second trimming.In order to realize unsymmetric structure, the first trimming is little with the maximum radial distance d1 of stator tooth internal diameter
Maximum radial distance d2 in the second trimming and stator tooth internal diameter..By adjusting the ratio of d1 and d2, electricity can be reduced further
The torque pulsation of machine.
In the 4th embodiment shown in Fig. 6, the arc length of the free end in the first tooth boots portion 3 to center line is L1, the second tooth
The free end in boots portion 4 is L2 to the arc length of center line, by making L1 > the L2 above-mentioned unsymmetric structure of construction.
Being enumerated above four kinds of concrete modes building unsymmetric structure, certainly, those skilled in the art also can use it
His mode builds this unsymmetric structure, is even combined above-mentioned different embodiment.For example, simultaneously from arc length, away from
Any at least two in, thickness is combined, to expect to obtain superior technique effect.
Present invention also offers a kind of motor, including stator, wherein, stator includes above-mentioned stator punching.For example, to figure
For embodiment shown in 3, the rotor of motor turns to the side without trimming of stator tooth from the side having trimming of stator tooth 2
Dynamic.For embodiment shown in Fig. 4, the rotor of motor rotates to the direction in the first tooth boots portion 3 from the second tooth boots portion 4.To Fig. 5
For shown embodiment, the rotor of motor rotates to the direction in the first tooth boots portion 3 from the second tooth boots portion 4.Reality shown in Fig. 6
For executing example, the rotor of motor rotates to the direction in the first tooth boots portion 3 from the second tooth boots portion 4.
Preferably, the motor stator core in the present invention is overrided to form by said stator punching, and rotor core can be routine
Built-in structure rotor, winding connection determines according to number of stator slots and rotor number of poles.
Fig. 8 is that tooth boots portion is without electromagnetic torque emulation knot when trimming, the symmetrical trimming in tooth boots portion, the asymmetric trimming in tooth boots portion
Really.With tooth boots portion without trimming compared with, when using the symmetrical trimming structure in tooth boots portion of prior art, the peak value of torque pulsation and valley
All having reduction, the amplitude that peak value reduces is relatively big, and therefore torque pulsation reduces 17%, but electromagnetic torque also reduces 5% simultaneously.Adopt
During by the asymmetric trimming structure in tooth boots portion of the present invention, the peak value of torque pulsation reduces, and valley is basically unchanged, and torque pulsation is further
Reduce and reach 24%.Further, since asymmetric tooth boots structure, the slope that torque pulsation is changed to minimum of a value by maximum slows down,
Electromagnetic torque mean value increases, and emulation electromagnetic torque is identical with without electromagnetic torque during trimming, namely more symmetrical trimming structure electricity
Machine is exerted oneself increase 5%.
Fig. 9 shows and uses tooth boots portion without electromagnetic torque when trimming, the symmetrical trimming in tooth boots portion, the asymmetric trimming in tooth boots portion
Simulation result with torque pulsation.As can be seen from Figure 9, when using the asymmetric trimming in the present invention, electromagnetic torque keeps original
100%, torque pulsation then drops to 76%.Visible, use the technology of the present invention without increasing permanent magnet consumption, both can ensure electricity
Machine torque output capability, also can reduce the torque pulsation of motor simultaneously, improves electric efficiency while not increasing cost.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a stator punching, it is characterised in that include: annular stator yoke (1) and be connected many with described annular stator yoke (1)
Individual stator tooth (2), the plurality of stator tooth (2) includes along the radial arrangement of described annular stator yoke (1), described stator tooth (2)
First tooth boots portion (3) and the second tooth boots portion (4), described first tooth boots portion (3) is fixed relative to described with described second tooth boots portion (4)
The center line of sub-tooth (2) is asymmetricly arranged.
2. stator punching according to claim 1, it is characterised in that described stator tooth (2) is only in described first tooth boots portion
(3) it is provided with trimming (a) in or the second tooth boots portion (4).
3. stator punching according to claim 1, it is characterised in that the thickness (h1) in described first tooth boots portion (3) is more than
The thickness (h2) in described second tooth boots portion (4).
4. stator punching according to claim 1, it is characterised in that described stator tooth (2) is positioned at annular stator yoke (1)
Side, described first tooth boots portion (3) is provided with the first trimming, and described second tooth boots portion (4) is provided with the second trimming, and described
The maximum radial distance (d1) of one trimming and stator tooth internal diameter less than described second trimming and stator tooth internal diameter maximum radial away from
From (d2).
5. stator punching according to claim 1, it is characterised in that the free end in described first tooth boots portion (3) is extremely described
The arc length (L1) of center line is more than the arc length (L2) of the free end extremely described center line in described second tooth boots portion (4).
6. a motor, including stator, it is characterised in that described stator includes the stator according to any one of claim 1 to 5
Punching.
7. a motor, including stator, it is characterised in that described stator includes the stator punching described in claim 2, described electricity
The rotor of machine rotates to the side without trimming of described stator tooth (2) from the side having trimming of described stator tooth (2).
8. a motor, including stator, it is characterised in that described stator includes the stator punching described in claim 3, described electricity
The rotor of machine rotates to the direction in described first tooth boots portion (3) from described second tooth boots portion (4).
9. a motor, including stator, it is characterised in that described stator includes the stator punching described in claim 4, described electricity
The rotor of machine rotates to the direction in described first tooth boots portion (3) from described second tooth boots portion (4).
10. a motor, including stator, it is characterised in that described stator includes the stator punching described in claim 5, described
The rotor of motor rotates to the direction in described first tooth boots portion (3) from described second tooth boots portion (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610593820.5A CN106067700A (en) | 2016-07-25 | 2016-07-25 | Stator punching and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610593820.5A CN106067700A (en) | 2016-07-25 | 2016-07-25 | Stator punching and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106067700A true CN106067700A (en) | 2016-11-02 |
Family
ID=57207222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610593820.5A Pending CN106067700A (en) | 2016-07-25 | 2016-07-25 | Stator punching and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106067700A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672312A (en) * | 2019-01-30 | 2019-04-23 | 浙江博阳压缩机有限公司 | Permanent magnet synchronous motor |
| CN110718974A (en) * | 2019-10-22 | 2020-01-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor stator, pole shoe machining method thereof and permanent magnet motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08317619A (en) * | 1995-05-12 | 1996-11-29 | Nippon Densan Corp | Permanent-magnet motor |
| JP2001061240A (en) * | 1999-08-23 | 2001-03-06 | Daido Steel Co Ltd | Motor that rotates in one direction |
| JP2005295736A (en) * | 2004-04-02 | 2005-10-20 | Japan Servo Co Ltd | Fan blower |
| CN1983776A (en) * | 2005-12-16 | 2007-06-20 | 信浓绢糸株式会社 | DC brush-free motor |
| CN205901457U (en) * | 2016-07-25 | 2017-01-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator is towards piece and motor |
-
2016
- 2016-07-25 CN CN201610593820.5A patent/CN106067700A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08317619A (en) * | 1995-05-12 | 1996-11-29 | Nippon Densan Corp | Permanent-magnet motor |
| JP2001061240A (en) * | 1999-08-23 | 2001-03-06 | Daido Steel Co Ltd | Motor that rotates in one direction |
| JP2005295736A (en) * | 2004-04-02 | 2005-10-20 | Japan Servo Co Ltd | Fan blower |
| CN1983776A (en) * | 2005-12-16 | 2007-06-20 | 信浓绢糸株式会社 | DC brush-free motor |
| CN205901457U (en) * | 2016-07-25 | 2017-01-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator is towards piece and motor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672312A (en) * | 2019-01-30 | 2019-04-23 | 浙江博阳压缩机有限公司 | Permanent magnet synchronous motor |
| CN110718974A (en) * | 2019-10-22 | 2020-01-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor stator, pole shoe machining method thereof and permanent magnet motor |
| CN110718974B (en) * | 2019-10-22 | 2021-03-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor stator, pole shoe machining method thereof and permanent magnet motor |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161102 |