CN204597746U - PMSM for Electric Vehicle Driving - Google Patents
PMSM for Electric Vehicle Driving Download PDFInfo
- Publication number
- CN204597746U CN204597746U CN201520363057.8U CN201520363057U CN204597746U CN 204597746 U CN204597746 U CN 204597746U CN 201520363057 U CN201520363057 U CN 201520363057U CN 204597746 U CN204597746 U CN 204597746U
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Abstract
The utility model relates to a kind of PMSM for Electric Vehicle Driving.It comprises stator and is rotatably supported on the rotor in stator, described stator comprises stator core, rotor comprises rotor core, stator core and rotor core are coaxially arranged, stator core is laminated by some stator punchings, the Internal periphery of stator punching is isocentric circular arc, rotor core is laminated by some rotor punchings, the outline of rotor punching is evenly distributed with some sections of isometric and non-concentric circular arcs that radius is identical and forms, the center of circle of described some sections of non-concentric circular arcs is positioned at circumferentially same, described circumference with the central point of rotor punching for the center of circle, the air gap such as is not formed between rotor outer wall and stator inner wall.It is the problem large for current electric automobile harmonic wave, noise is high, provides a kind of application and does not wait gap structure to be applied on motor in electric automobile, thus reach the PMSM for Electric Vehicle Driving weakening space harmonics effect.
Description
Technical field
The utility model relates to technical field of vehicle manufacture, specifically a kind of PMSM for Electric Vehicle Driving.
Background technology
Along with international community is to the continuous attention of environmental protection, electric automobile has welcome the inning of development, also achieves good achievement.The relationship between efficiency of drive motors is to the flying power of car load, so the higher permanent magnet synchronous motor of efficiency is widely used in drive system of electric automobile.
The noise of motor is the important sources of electric automobile noise, if noise of motor is high, after the amplification in compartment, the comfort level of driver and passenger can decline, and has a strong impact on car mass.Therefore the harmonic wave reducing motor be managed by motor when designing, thus reduces the noise of motor.So how to reduce the harmonic component of motor, the key subjects of driving motor for electric automobile are become.
The harmonic wave of motor itself is produced by the acting in conjunction of stator and rotor space harmonics, and due to short distance, the distribution effect of winding, stator mmf harmonics obtains certain suppression.To permanent magnet synchronous motor, rotor adopts permanent magnet excitation, air gap magnetic density waveform is trapezoidal wave distribution, and harmonic content is large, so certain measure will be taked to weaken these harmonic waves.
Summary of the invention
The utility model object is the problem large for current electric automobile harmonic wave, noise is high, provides a kind of application and does not wait gap structure to be applied on motor in electric automobile, thus reach the PMSM for Electric Vehicle Driving weakening space harmonics effect.
Above-mentioned technical purpose of the present utility model mainly solves by the following technical programs: it comprises stator and is rotatably supported on the rotor in stator, described stator comprises stator core, rotor comprises rotor core, stator core and rotor core are coaxially arranged, stator core is laminated by some stator punchings, the Internal periphery of stator punching is isocentric circular arc, rotor core is laminated by some rotor punchings, the outline of rotor punching is evenly distributed with some sections of isometric and non-concentric circular arcs that radius is identical and forms, the center of circle of described some sections of non-concentric circular arcs is positioned at circumferentially same, described circumference with the central point of rotor punching for the center of circle, the air gap such as is not formed between rotor outer wall and stator inner wall.The utility model arranges some isometric and non-concentric circular arcs that radius is identical at rotor punching outline, thus the distance at rotor punching outline distance rotor punching center is changed, present periodically-varied, and then make air gap circumferentially generating period change between rotor and stator, thus greatly can reduce the content of motor space harmonics, to reduce motor as the noise in electric automobile driving power running process.
As preferably, between two sections of non-concentric circular arcs that described some sections of non-concentric circular arcs are often adjacent, be all connected with one section of isocentric circular arc, connect all isocentric circular arc arc length of non-concentric circular arc and radius all equal and with the center of rotor punching for the center of circle; The arc length of every section of non-concentric circular arc is 15-35 times of every section of communication circular arc.Between non-concentric circular arc, connect isocentric circular arc, thus rotor punching outline formed non-concentric circular arc and isocentric circular arc alternately, can make in motor operation course more steady.
As preferably, two sections of non-concentric circular arcs that described some sections of non-concentric circular arcs are often adjacent are directly connected.
As preferably, the ultimate range at described rotor punching outline and rotor punching center is set to L1, the minimum range at described rotor punching outline and rotor punching center is set to L2, the Internal periphery radius of stator core is set to R, minimal air gap between rotor outer wall and stator inner wall is set to h1, and the maximum air gap between rotor outer wall and stator inner wall is set to h2, and the value of h1 equals (R-L1), the value of h2 equals (R-L2), and the ratio range of h1/h2 is 1/4-1/2.
As preferably, the quantity of described non-concentric circular arc is equal with the number of magnetic poles of motor rotor.
Therefore, the utility model has can weaken the effect of motor space harmonic wave, runs the features such as noise is less.
Accompanying drawing explanation
Fig. 1 is the structural representation of stator punching of the present utility model and rotor punching;
Fig. 2 is the structural representation of the utility model rotor punching;
Fig. 3 is the B place enlarged diagram of Fig. 1.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: PMSM for Electric Vehicle Driving, comprise stator and be rotatably supported on the rotor in stator, stator comprises stator core, rotor comprises rotor core, stator core and rotor core are coaxially arranged, as shown in Figure 1, stator core is laminated by stator punching 1, the Internal periphery of stator punching is isocentric circular arc, rotor core is laminated by rotor punching 2, the outline of rotor punching 2 is evenly distributed with eight sections of isometric and non-concentric circular arcs 3 that radius is identical and forms, one section of isocentric circular arc 4 is all connected with between two sections of often adjacent non-concentric circular arcs 3, the center of circle of 8 sections of non-concentric circular arcs is positioned on same circumference 5, circumference 5 with the central point O of rotor punching for the center of circle, connect all isocentric circular arc arc length of non-concentric circular arc and radius all equal and with the center O of rotor punching for the center of circle, the air gap such as is not formed between rotor outer wall and stator inner wall.The arc length M of every section of non-concentric circular arc is 24 times of every section of isocentric circular arc N.As shown in Figure 1, Figure 2 and Figure 3, the ultimate range at rotor punching outline and rotor punching center is set to L1, the minimum range at rotor punching outline and rotor punching center is set to L2, the Internal periphery radius of stator core is set to R, minimal air gap between rotor outer wall and stator inner wall is set to h1, and the maximum air gap between rotor outer wall and stator inner wall is set to h2, and the value of h1 equals (R-L1), the value of h2 equals (R-L2), and the ratio range of h1/h2 is 1/3.The quantity of non-concentric circular arc is equal with the number of magnetic poles of motor rotor.
Embodiment 2: be that two sections of non-concentric circular arcs that 8 sections of non-concentric circular arcs are often adjacent are directly connected with the difference part of embodiment 1.
The utility model still has numerous embodiments, all employing equivalents or equivalent transformation and the technical scheme formed, and all drops within protection range of the present utility model.
Claims (6)
1. a PMSM for Electric Vehicle Driving, comprise stator and be rotatably supported on the rotor in stator, it is characterized in that: described stator comprises stator core, rotor comprises rotor core, stator core and rotor core are coaxially arranged, stator core is laminated by some stator punchings, the Internal periphery of stator punching is isocentric circular arc, rotor core is laminated by some rotor punchings, the outline of rotor punching is evenly distributed with some sections of isometric and non-concentric circular arcs that radius is identical and forms, the center of circle of described some sections of non-concentric circular arcs is positioned at circumferentially same, described circumference with the central point of rotor punching for the center of circle, the air gap such as is not formed between rotor outer wall and stator inner wall.
2. PMSM for Electric Vehicle Driving according to claim 1, it is characterized in that all being connected with one section of isocentric circular arc between two sections of non-concentric circular arcs that described some sections of non-concentric circular arcs are often adjacent, connect all isocentric circular arc arc length of non-concentric circular arc and radius all equal and with the center of rotor punching for the center of circle.
3. PMSM for Electric Vehicle Driving according to claim 2, is characterized in that: the arc length of every section of non-concentric circular arc is 15-35 times of every section of communication circular arc.
4. PMSM for Electric Vehicle Driving according to claim 1, is characterized in that two sections of non-concentric circular arcs that described some sections of non-concentric circular arcs are often adjacent are directly connected.
5. PMSM for Electric Vehicle Driving according to claim 1 or 2 or 3 or 4, it is characterized in that the ultimate range at described rotor punching outline and rotor punching center is set to L1, the minimum range at described rotor punching outline and rotor punching center is set to L2, the Internal periphery radius of stator core is set to R, minimal air gap between rotor outer wall and stator inner wall is set to h1, maximum air gap between rotor outer wall and stator inner wall is set to h2, the value of h1 equals (R-L1), the value of h2 equals (R-L2), and the ratio range of h1/h2 is 1/4-1/2.
6. PMSM for Electric Vehicle Driving according to claim 1 or 2 or 3 or 4, is characterized in that the quantity of described non-concentric circular arc is equal with the number of magnetic poles of motor rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520363057.8U CN204597746U (en) | 2015-06-01 | 2015-06-01 | PMSM for Electric Vehicle Driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520363057.8U CN204597746U (en) | 2015-06-01 | 2015-06-01 | PMSM for Electric Vehicle Driving |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204597746U true CN204597746U (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520363057.8U Expired - Fee Related CN204597746U (en) | 2015-06-01 | 2015-06-01 | PMSM for Electric Vehicle Driving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204597746U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126607A (en) * | 2019-05-05 | 2019-08-16 | 台州市金宇机电有限公司 | A kind of hanging motor driver in the side of battery-operated motor cycle |
-
2015
- 2015-06-01 CN CN201520363057.8U patent/CN204597746U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126607A (en) * | 2019-05-05 | 2019-08-16 | 台州市金宇机电有限公司 | A kind of hanging motor driver in the side of battery-operated motor cycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |