CN204258459U - A kind of permanent magnet synchronous motor stator rabbet structure - Google Patents
A kind of permanent magnet synchronous motor stator rabbet structure Download PDFInfo
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- CN204258459U CN204258459U CN201420772300.7U CN201420772300U CN204258459U CN 204258459 U CN204258459 U CN 204258459U CN 201420772300 U CN201420772300 U CN 201420772300U CN 204258459 U CN204258459 U CN 204258459U
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- synchronous motor
- magnet synchronous
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Abstract
The utility model relates to a kind of permanent magnet synchronous motor stator rabbet structure, being included in profile is the stator slot that the circular first-class spacing of stator punching is offered, stator tooth is interposed between two adjacent stator slots, stator slot offers stator rabbet on the side of rotor punching, and the air gap shape between the opening part of described stator rabbet and rotor punching cylindrical is roughly in trapezoidal.Gap between the opening part of the stator rabbet in the utility model and rotor punching cylindrical is roughly in trapezoidal, trapezoidal breath contoured surface is compared with existing circular air gap contoured surface, make the waveform of air gap flux density close to sine wave, reduce each harmonic amplitude, reduce Cymbidium aloifolium, the cogging torque of motor can be reduced simultaneously, reduce torque ripple, the loss of electric machine, improve the overall performance of permanent magnet synchronous motor.
Description
Technical field
The utility model relates to permanent magnet synchronous motor technical field, especially a kind of permanent magnet synchronous motor stator rabbet structure.
Background technology
Permanent magnet synchronous motor is as the Power output of new-energy automobile, and the quality of its performance directly has influence on the dynamic property of car load, comfortableness and economy.Permanent magnet synchronous motor due to new-energy automobile has the features such as operational environment complexity, volume is little, reliability is high, power density is large, there is the advantages such as high torque density, high power density, high efficiency, high reliability simultaneously, be therefore widely used in new-energy automobile.
The air gap contoured surface of current permanent magnet synchronous motor is on the market the circle of a standard, this structure causes in permanent magnet synchronous motor air-gap field containing a large amount of harmonic waves, noise vibration is increased, no-load back electromotive force harmonic content increases, loss strengthens, run torque ripple, reduce the combination property of permanent magnet synchronous motor.
Utility model content
The purpose of this utility model is to provide a kind of waveform of air gap flux density that makes close to sine wave, reduces torque ripple, the loss of electric machine, improves the permanent magnet synchronous motor stator rabbet structure of motor overall performance.
For achieving the above object, the utility model have employed following technical scheme: a kind of permanent magnet synchronous motor stator rabbet structure, being included in profile is the stator slot that the circular first-class spacing of stator punching is offered, stator tooth is interposed between two adjacent stator slots, stator slot offers stator rabbet on the side of rotor punching, and the air gap shape between the opening part of described stator rabbet and rotor punching cylindrical is roughly in trapezoidal.
Described trapezoidal be isosceles trapezoid, the long A/F for stator rabbet opening part of its upper base, the outer side edges of described stator tooth is divided into three sections, and two sections of outer side edges on both sides are straight line, and respectively as two adjacent trapezoidal waists, middle one section of outer side edges is arc-shaped.
Described rotor punching body equidistantly offers multiple slot for inserting magnet steel along its circumference.
Described stator tooth is wound around stator winding.
Described stator punching and rotor punching coaxial cooperation.
As shown from the above technical solution, gap between the opening part of the stator rabbet in the utility model and rotor punching cylindrical is roughly in trapezoidal, trapezoidal breath contoured surface is compared with existing circular air gap contoured surface, make the waveform of air gap flux density close to sine wave, reduce each harmonic amplitude, reduce Cymbidium aloifolium, the cogging torque of motor can be reduced simultaneously, reduce torque ripple, the loss of electric machine, improve the overall performance of permanent magnet synchronous motor.
Accompanying drawing explanation
Fig. 1 is the structural representation of stator punching in the utility model;
Fig. 2,3 is the enlarged diagram of part A in Fig. 1;
Fig. 4 is the structural representation that in the utility model, stator punching coordinates with rotor punching.
Embodiment
A kind of permanent magnet synchronous motor stator rabbet structure, being included in profile is the stator slot 11 that the circular first-class spacing of stator punching 10 is offered, stator tooth 12 is interposed between two adjacent stator slots 11, stator slot 11 offers stator rabbet 13 on the side of rotor punching 40, air gap 50 shape between the opening part of described stator rabbet 13 and rotor punching 40 cylindrical is roughly in trapezoidal, as shown in Figure 1,2,3, 4, the utility model replaces circular arc at the air gap edge straight line of permanent magnet synchronous motor stator rabbet 13, increases the gas length at stator rabbet 13 place.
As shown in Figure 1, 2, 3, described trapezoidal be isosceles trapezoid, the long A/F for stator rabbet 13 opening part of its upper base, it goes to the bottom long is l, the outer side edges of described stator tooth 12 is divided into three sections, and two sections of outer side edges a on both sides are straight line, respectively as two adjacent trapezoidal waists, middle one section of outer side edges b is arc-shaped, and trapezoidal high h is the vertical range of stator rabbet 13 opening part to the long l that goes to the bottom.Replace the circular arc type of former slot-open-section with the ladder-type trough caved inward in DC permanent magnet stator notch 13 part, a stator rabbet 13 arranges a ladder-type trough.By offering ladder-type trough, the original even air gap of permanent magnet synchronous motor is made to become air gap heterogeneous, make air-gap reluctance everywhere not identical, air gap flux density is caused to produce corresponding change with magnetic resistance change rate thus, suitable ladder-type trough mouth structure can make air gap flux density close to sinusoidal wave, harmonic reduction content, reduce slot effect simultaneously, reduce cogging torque, the harmonic content of back electromotive force can be made like this to reduce, reduce Cymbidium aloifolium, the torque ripple of motor is reduced, promote the overall performance of permanent magnet synchronous motor.
As shown in Figure 4, described rotor punching 40 body equidistantly offers multiple slot for inserting magnet steel 30 along its circumference, described stator tooth 12 is wound around stator winding 20, described stator punching 10 and rotor punching 40 coaxial cooperation.
In sum, gap between the opening part of the stator rabbet 13 in the utility model and rotor punching 40 cylindrical is roughly in trapezoidal, trapezoidal breath contoured surface is compared with existing circular air gap contoured surface, make the waveform of air gap flux density close to sine wave, reduce each harmonic amplitude, reduce Cymbidium aloifolium, the cogging torque of motor can be reduced simultaneously, reduce torque ripple, the loss of electric machine, improve the overall performance of permanent magnet synchronous motor.
Claims (5)
1. a permanent magnet synchronous motor stator rabbet structure, being included in profile is the stator slot (11) that circular stator punching (10) first-class spacing is offered, stator tooth (12) is interposed between two adjacent stator slots (11), stator slot (11) offers stator rabbet (13) on the side of rotor punching (40), it is characterized in that: air gap (50) shape between the opening part of described stator rabbet (13) and rotor punching (40) cylindrical is roughly in trapezoidal.
2. permanent magnet synchronous motor stator rabbet structure according to claim 1, it is characterized in that: described trapezoidal for isosceles trapezoid, the long A/F for stator rabbet (13) opening part of its upper base, the outer side edges of described stator tooth (12) is divided into three sections, two sections of outer side edges on both sides are straight line, respectively as two adjacent trapezoidal waists, middle one section of outer side edges is arc-shaped.
3. permanent magnet synchronous motor stator rabbet structure according to claim 1, is characterized in that: described rotor punching (40) body equidistantly offers multiple slot for inserting magnet steel (30) along its circumference.
4. permanent magnet synchronous motor stator rabbet structure according to claim 1, is characterized in that: described stator tooth (12) is wound around stator winding (20).
5. permanent magnet synchronous motor stator rabbet structure according to claim 1, is characterized in that: described stator punching (10) and rotor punching (40) coaxial cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420772300.7U CN204258459U (en) | 2014-12-10 | 2014-12-10 | A kind of permanent magnet synchronous motor stator rabbet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420772300.7U CN204258459U (en) | 2014-12-10 | 2014-12-10 | A kind of permanent magnet synchronous motor stator rabbet structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204258459U true CN204258459U (en) | 2015-04-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420772300.7U Active CN204258459U (en) | 2014-12-10 | 2014-12-10 | A kind of permanent magnet synchronous motor stator rabbet structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204258459U (en) |
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2014
- 2014-12-10 CN CN201420772300.7U patent/CN204258459U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.5821, Fanfu Avenue, Baohe District, Hefei City, Anhui Province Patentee after: Anhui Juyi Technology Co., Ltd Address before: Baohe Industrial District of Hefei City, Anhui province 230051 Shanghai road Dalian Road Patentee before: ANHUI JEE AUTOMATION EQUIPMENT Co.,Ltd. |