CN103560634A - Built-in permanent magnet synchronous motor for electric automobile - Google Patents
Built-in permanent magnet synchronous motor for electric automobile Download PDFInfo
- Publication number
- CN103560634A CN103560634A CN201310572862.7A CN201310572862A CN103560634A CN 103560634 A CN103560634 A CN 103560634A CN 201310572862 A CN201310572862 A CN 201310572862A CN 103560634 A CN103560634 A CN 103560634A
- Authority
- CN
- China
- Prior art keywords
- tooth
- stator
- increment
- category
- cloth groove
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a built-in permanent magnet synchronous motor for an electric automobile, and relates to the technical field of motors. The built-in permanent magnet synchronous motor for the electric automobile solves the technical problem of reduction of motor torque fluctuation. The built-in permanent magnet synchronous motor comprises a stator and a rotor. The stator is annular, a plurality of stator teeth and a plurality of stator grooves are formed in the inner circle of the stator alternately, groove openings of the stator grooves face the rotor directly, the ends, facing the ring center of the stator, of the stator teeth are tooth ends of the stator teeth, the end faces of the tooth ends of the stator teeth are tooth faces of the stator teeth, the number of the stator teeth is a multiple of three, at least one tooth end groove is formed in the tooth face of each stator tooth, the tooth end grooves are semi-round in the radial cross sections of the stator teeth, groove openings of the tooth end grooves face to the ring center of the stator, and the numbers and/or the arrangement positions of the tooth end grooves on the adjacent stator teeth are mutually different. The built-in permanent magnet synchronous motor can reduce motor torque fluctuation and is simple in production technology.
Description
Technical field
Cogging torque also claims magnetic resistance moment, it is critical defect in the governing system of automation occasion, electromechanical integration occasion, the fluctuation of magnetic resistance moment and cogging torque is larger, can cause power of motor density low, and high speed constant power bracket is narrow, overload capacity is low and the defect such as poor reliability.
Fig. 5 is the d axle of used for electric vehicle internal permanent magnet synchronous motor, q axle schematic diagram, as shown in Figure 5, very little (magnetic resistance is very large through magnetic permeability for d axle (d-axis) magnetic flux of motor, approach air) permanent magnet 53, therefore d axle inductance L d is less, q axle (quadrature axis) magnetic flux of motor is through the magnetic permeability very rotor core 52 of large (magnetic resistance is very little), therefore q axle inductance L q is larger, internal permanent magnet synchronous motor rotor is typical salient-pole structure, saliency (salient pole rate) is remarkable, quadrature axis inductance is greater than d-axis inductance (Lq > Ld), make motor on the basis of permanent-magnet torque superposition reluctance torque, reluctance torque have a starting characteristic that helps improve motor, overload capacity and power density, be easy to weak-magnetic speed-regulating, expand permanent power bracket operation.
The torque of motor is:
In formula: T is torque, P is number of pole-pairs,
for magnetic linkage,
for d-axis inductance,
for quadrature axis inductance,
for direct-axis current,
for quadrature axis electric current,
for electromagnetic torque,
for reluctance torque;
Fig. 6 is the radial section schematic diagram of used for electric vehicle internal type V permagnetic synchronous motor, and Fig. 6 a is wherein the radial section schematic diagram of rotor, and Fig. 6 b is radial load schematic diagram, and Fig. 6 c is the radial load schematic diagram of d axle, and Fig. 6 d is the radial load schematic diagram of q axle;
As shown in Figure 6 a, V-type diametrical magnetization rectangular strip magnet steel 621 is evenly set in permanent magnetism groove, with pole shoe 622 magnetic poles;
As shown in Figure 6 b, magnet steel radial center angle is φ 1, and polar arc angle is 2 φ 2, and magnetic pole radial center line is d axle, and interpolar center line is q axle;
From Fig. 6 c and Fig. 6 d: d axle permanent magnet flux density is high, the radial load producing with the flank of tooth of stator tooth is large, q axle permanent magnet flux density is low, the radial load producing with the flank of tooth of stator tooth is little, due to radial load difference and the variation that d axle, q axle produce in the stator tooth flank of tooth, while making motor operation, produce larger mechanical oscillation, noise and torque fluctuations.
Reduce motor torque fluctuation and can improve motor performance, the method of existing reduction motor torque fluctuation mainly contains mark channel process, auxiliary channel process, auxiliary tooth method, skewed slot method, oblique utmost point method, the channel process of remaining silent and magnetization slot wedge method etc., these methods cut both ways, but are always difficult to effectively eliminate slot effect.Improve the first-harmonic number of times (frequency) of cogging torque fluctuation, just can effectively reduce teeth groove first-harmonic and high order harmonic component torque amplitude, reduce the torque fluctuations that teeth groove causes, for a long time, one of measure that reduces torque fluctuations is exactly to increase number of stator slots, improves the first-harmonic number of times (frequency) of cogging torque fluctuation, but such complex manufacturing, the stator slot difficulty that rolls off the production line increases, and efficiency also reduces; Two of the measure of reduction torque fluctuations is exactly skewed stator core slot (angle that stator core axial torsion is certain), but makes so equally complex manufacturing, and stator slot area is reduced, and reduction is exerted oneself, and loses more than gain.
Summary of the invention
For the defect existing in above-mentioned prior art, technical problem to be solved by this invention is to provide a kind of motor torque that can reduce and fluctuates, and the simple used for electric vehicle internal permanent magnet synchronous motor of production technology.
In order to solve the problems of the technologies described above, a kind of used for electric vehicle internal permanent magnet synchronous motor provided by the present invention, comprise stator and rotor, in the form of a ring, its inner ring is alternately formed with a plurality of stator tooths and a plurality of stator slot to described stator, and the notch of described stator slot is over against rotor, the increment that described stator tooth is stator tooth towards one end of the track ring heart, the flank of tooth that the increment end face of stator tooth is stator tooth, the quantity of stator tooth is three multiple, it is characterized in that:
The flank of tooth of each stator tooth all offers at least one increment groove, described increment groove semicircular in shape in the radial section of stator tooth, and the notch of increment groove is towards the track ring heart, and quantity and/or the installation position of the increment groove on adjacent stators tooth are different each other.
Further, each stator tooth is divided into three classes, is respectively category-A tooth, category-B tooth, C class tooth, and the arrangement mode of each stator tooth is: along stator circumferentially, repeat category-A tooth, category-B tooth, this order of C class tooth;
In the radial section of stator tooth, the flank of tooth of stator tooth has three cloth groove points, these three cloth groove points are respectively the first cloth groove point, the second cloth groove point, the 3rd cloth groove point, and these three cloth groove points circumferential equi-spaced apart along stator on the flank of tooth of stator tooth distributes, and the second cloth groove point is wherein positioned at the flank of tooth center of stator tooth;
Category-A tooth, C class tooth respectively have an increment groove, category-B tooth has two increment grooves, the increment groove of category-A tooth is laid in the second cloth groove point, and two increment grooves of category-B tooth are laid in respectively the first cloth groove point, the 3rd cloth groove point, and the increment groove of C class tooth is laid in the 3rd cloth groove point.
Further, the quantity of described stator slot has 12 or 18 or 24.
Further, the quantity of described stator tooth is four multiple;
Each stator tooth is divided into four classes, is respectively category-A tooth, category-B tooth, C class tooth, D class tooth, and the arrangement mode of each stator tooth is: along stator circumferentially, repeat category-A tooth, category-B tooth, D class tooth, this order of C class tooth;
In the radial section of stator tooth, the flank of tooth of stator tooth has three cloth groove points, these three cloth groove points are respectively the first cloth groove point, the second cloth groove point, the 3rd cloth groove point, and these three cloth groove points circumferential equi-spaced apart along stator on the flank of tooth of stator tooth distributes, and the second cloth groove point is wherein positioned at the flank of tooth center of stator tooth;
Category-A tooth, C class tooth, D class tooth respectively have an increment groove, category-B tooth has two increment grooves, the increment groove of category-A tooth is laid in the second cloth groove point, two increment grooves of category-B tooth are laid in respectively the first cloth groove point, the 3rd cloth groove point, the increment groove of C class tooth is laid in the 3rd cloth groove point, and the increment groove of D class tooth is laid in the first cloth groove point.
Further, the quantity of described stator slot has 24.
Further, the radial section of described stator slot has following feature: bottom land two bights of stator slot have chamfering, and stator slot has a center line, the axle center of this center line process rotor, and the radial section of stator slot is divided into symmetrical two halves.
Further, the fillet surface in bottom land two bights of described stator slot is intersected in the center line of stator slot.
Used for electric vehicle internal permanent magnet synchronous motor provided by the invention, at the flank of tooth of each stator tooth, offer semicircular increment groove, be equivalent to increase the stator slot quantity of motor, thereby in the situation that reality does not increase stator slot quantity, improved the first-harmonic number of times (frequency) of cogging torque fluctuation, teeth groove first-harmonic and high order harmonic component torque amplitude have been reduced, reduce the torque ripple that teeth groove causes, d axle and q axle radial load are tended to balance, can reduce mechanical oscillation, noise, vibration and back-emf harmonic wave, reduce core loss, realize motor efficient, high power density, high reliability, low noise, the features such as low fluctuation even running, and production technology is simple.In addition, bottom land two bights of stator slot have chamfering, tooth root end stress and the magnetic circuit that can reduce stator tooth are saturated, thereby suppress Static and dynamic armature reaction, noise in the time of significantly reducing rotor high-speed operation, mechanical oscillation and stator core distortion, particularly can significantly reduce back-emf harmonic component, makes effectively to reduce back-emf total harmonic distortion, be conducive to motor frequent starting, there is higher overload capacity and reliability.
Accompanying drawing explanation
Fig. 1 is the stator tooth arrangement mode schematic diagram of the used for electric vehicle internal permanent magnet synchronous motor of first embodiment of the invention;
Fig. 2 is the stator tooth arrangement mode schematic diagram of the used for electric vehicle internal permanent magnet synchronous motor of second embodiment of the invention;
Fig. 3 is the stator slot structural representation of the used for electric vehicle internal permanent magnet synchronous motor of third embodiment of the invention;
Fig. 4 is the stator slot structural representation of the used for electric vehicle internal permanent magnet synchronous motor of fourth embodiment of the invention;
Fig. 5 is d axle, the q axle schematic diagram of used for electric vehicle internal permanent magnet synchronous motor;
Fig. 6 is the radial section schematic diagram of used for electric vehicle internal type V permagnetic synchronous motor, and Fig. 6 a is wherein the radial section schematic diagram of rotor, and Fig. 6 b is radial load schematic diagram, and Fig. 6 c is the radial load schematic diagram of d axle, and Fig. 6 d is the radial load schematic diagram of q axle;
Fig. 7 is the cogging torque oscillogram of the used for electric vehicle internal permanent magnet synchronous motor of first embodiment of the invention;
Fig. 8 is the cogging torque oscillogram of existing permagnetic synchronous motor;
Fig. 9 is the characteristic working curve of existing used for electric vehicle internal permanent magnet synchronous motor;
Figure 10 is the characteristic working curve of the used for electric vehicle internal permanent magnet synchronous motor of third embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing explanation, embodiments of the invention are described in further detail, but the present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof, all should list protection scope of the present invention in.
As shown in Figure 1, a kind of used for electric vehicle internal permanent magnet synchronous motor that first embodiment of the invention provides, comprise stator and rotor, in the form of a ring, its inner ring is alternately formed with a plurality of stator tooths and a plurality of stator slot 16 to described stator, and the notch of described stator slot 16 is over against rotor, the increment that described stator tooth is stator tooth towards one end of the track ring heart, the flank of tooth that the increment end face of stator tooth is stator tooth, the quantity of stator tooth is three multiple, it is characterized in that:
The flank of tooth of each stator tooth all offers at least one increment groove 19, described increment groove 19 semicircular in shape in the radial section of stator tooth, and the notch of increment groove 19 is towards the track ring heart, and quantity and/or the installation position of the increment groove 19 on adjacent stators tooth are different each other;
Each stator tooth is divided into three classes, is respectively category-A tooth 11, category-B tooth 12, C class tooth 13, and the arrangement mode of each stator tooth is: along stator circumferentially, repeat category-A tooth 11, category-B tooth 12, C class tooth 13 these orders;
In the radial section of stator tooth, the flank of tooth of stator tooth has three cloth groove points, these three cloth groove points are respectively the first cloth groove point, the second cloth groove point, the 3rd cloth groove point, and these three cloth groove points circumferential equi-spaced apart along stator on the flank of tooth of stator tooth distributes, and the second cloth groove point is wherein positioned at the flank of tooth center of stator tooth;
Category-A tooth 11, C class tooth 13 respectively have an increment groove, category-B tooth 12 has two increment grooves, the increment groove 19 of category-A tooth 11 is laid in the second cloth groove point, two increment grooves 19 of category-B tooth 12 are laid in respectively the first cloth groove point, the 3rd cloth groove point, and the increment groove 19 of C class tooth 13 is laid in the 3rd cloth groove point.
In first embodiment of the invention, the quantity of described stator slot 16 has 12 or 18 or 24.
The used for electric vehicle internal permanent magnet synchronous motor of first embodiment of the invention, mechanical oscillation, noise, vibration and back-emf harmonic wave in the time of reducing motor operation, can reduce core loss, can realize that motor is efficient, high power density, high reliability, low noise, low fluctuation even running.
Fig. 7 is the cogging torque oscillogram of the used for electric vehicle internal permanent magnet synchronous motor of first embodiment of the invention, Tcog axle (vertical pivot) in figure is cogging torque number line, θ axle (transverse axis) is motor torque angle number line, the rated power of this motor is 12KW, rated moment is 57.3Nm, synchronous speed is 2000 revs/min, and actual cogging torque peak value while recording this machine operation is 0.58Nm, and cogging torque fluctuation is 1.01%.
Fig. 8 is the cogging torque oscillogram of existing permagnetic synchronous motor, Tcog axle (vertical pivot) in figure is cogging torque number line, θ axle (transverse axis) is motor torque angle number line, the rated power of this motor is 12KW, rated moment is 57.3Nm, synchronous speed is 2000 revs/min, and actual cogging torque peak value while recording this machine operation is 6Nm, and cogging torque fluctuation is 10.47%.
The data that recorded from Fig. 7, Fig. 8, the relatively existing permagnetic synchronous motor of first embodiment of the invention, cogging torque fluctuation reduces to 1.01% from 10.47%, the peak value cogging torque of motor performance is effectively suppressed, motor integrated quality is increased substantially, can effectively improve the combination property of motor, can realize high power density, low noise, low torque fluctuations, wide range speed control, fast-response, frequent starting and even running, can meet electronic, hybrid vehicle driving requirement.
As shown in Figure 2, a kind of used for electric vehicle internal permanent magnet synchronous motor that second embodiment of the invention provides, comprise stator and rotor, in the form of a ring, its inner ring is alternately formed with a plurality of stator tooths and a plurality of stator slot 26 to described stator, and the notch of described stator slot 26 is over against rotor, the increment that described stator tooth is stator tooth towards one end of the track ring heart, the flank of tooth that the increment end face of stator tooth is stator tooth, the quantity of stator tooth is that the quantity of three multiple and stator tooth is four multiple, it is characterized in that:
The flank of tooth of each stator tooth all offers at least one increment groove 29, described increment groove 29 semicircular in shape in the radial section of stator tooth, and the notch of increment groove 29 is towards the track ring heart, and quantity and/or the installation position of the increment groove 29 on adjacent stators tooth are different each other;
Each stator tooth is divided into four classes, is respectively category-A tooth 21, category-B tooth 22, C class tooth 23, D class tooth 24, and the arrangement mode of each stator tooth is: along stator circumferentially, repeat category-A tooth 21, category-B tooth 22, D class tooth 24, C class tooth 23 these orders;
In the radial section of stator tooth, the flank of tooth of stator tooth has three cloth groove points, these three cloth groove points are respectively the first cloth groove point, the second cloth groove point, the 3rd cloth groove point, and these three cloth groove points circumferential equi-spaced apart along stator on the flank of tooth of stator tooth distributes, and the second cloth groove point is wherein positioned at the flank of tooth center of stator tooth;
Category-A tooth 21, C class tooth 23, D class tooth 24 respectively have an increment groove, category-B tooth 22 has two increment grooves, the increment groove 29 of category-A tooth 21 is laid in the second cloth groove point, two increment grooves 29 of category-B tooth 22 are laid in respectively the first cloth groove point, the 3rd cloth groove point, the increment groove 29 of C class tooth 23 is laid in the 3rd cloth groove point, and the increment groove 29 of D class tooth 24 is laid in the first cloth groove point.
In second embodiment of the invention, the quantity of described stator slot 26 has 24.
The used for electric vehicle internal permanent magnet synchronous motor of second embodiment of the invention, mechanical oscillation, noise, vibration and back-emf harmonic wave in the time of reducing motor operation, can reduce core loss, can realize that motor is efficient, high power density, high reliability, low noise, low fluctuation even running.
As shown in Figure 3, a kind of used for electric vehicle internal permanent magnet synchronous motor that third embodiment of the invention provides, comprises stator and rotor, and in the form of a ring, its inner ring is alternately formed with a plurality of stator tooths 31 and a plurality of stator slot 32 to described stator.
The architectural feature of third embodiment of the invention is with similar with first embodiment of the invention, and third embodiment of the invention is from the distinguishing characteristics of first embodiment of the invention: the flute profile of stator slot 32 is different.
In third embodiment of the invention, the radial section of described stator slot 32 has following feature: bottom land two bights of stator slot 32 have chamfering 43, stator slot 32 has a center line X, the axle center of this center line X process rotor, and the radial section of stator slot 32 is divided into symmetrical two halves.
The used for electric vehicle internal permanent magnet synchronous motor of third embodiment of the invention, mechanical oscillation, noise, vibration and back-emf harmonic wave in the time of reducing motor operation, can reduce core loss, can realize that motor is efficient, high power density, high reliability, low noise, low fluctuation even running.
Take rated power as 12KW, and rated moment is 57.3Nm, and synchronous speed is that the motor of 2000 revs/min is example, through surveying:
Actual the recording of used for electric vehicle internal permanent magnet synchronous motor of third embodiment of the invention: cogging torque peak value during machine operation is 0.3Nm, cogging torque fluctuation is 0.52%;
Existing permagnetic synchronous motor is actual to be recorded: cogging torque peak value during machine operation is 6Nm, and cogging torque fluctuation is 10.47%.
From measured data, the relatively existing permagnetic synchronous motor of third embodiment of the invention, cogging torque fluctuation reduces to 0.52% from 10.47%, the peak value cogging torque of motor performance is effectively suppressed, motor integrated quality is increased substantially, can effectively improve the combination property of motor, can realize high power density, low noise, low torque fluctuations, wide range speed control, fast-response, frequent starting and even running, can meet electronic, hybrid vehicle driving requirement.
As shown in Figure 4, a kind of used for electric vehicle internal permanent magnet synchronous motor that fourth embodiment of the invention provides, comprises stator and rotor, and in the form of a ring, its inner ring is alternately formed with a plurality of stator tooths 41 and a plurality of stator slot 42 to described stator.
The architectural feature of fourth embodiment of the invention is with similar with first embodiment of the invention, and fourth embodiment of the invention is from the distinguishing characteristics of first embodiment of the invention: the flute profile of stator slot 42 is different.
In fourth embodiment of the invention, the radial section of described stator slot 42 has following feature: bottom land two bights of stator slot 32 have chamfering 43, stator slot 42 has a center line Y, this center line Y is through the axle center of rotor, and the radial section of stator slot 42 is divided into symmetrical two halves, the fillet surface in bottom land two bights of stator slot 42 is intersected in the center line of stator slot.
Each stator tooth in the present invention the 3rd, the 4th embodiment also can adopt stator tooth structure and the laying mode in second embodiment of the invention.
The used for electric vehicle internal permanent magnet synchronous motor of the present invention first, second, third, fourth embodiment, mechanical oscillation, noise, vibration and back-emf harmonic wave in the time of reducing motor operation, can reduce core loss, can realize that motor is efficient, high power density, high reliability, low noise, low fluctuation even running.
Fig. 9 is that existing rated power is the characteristic working curve of the used for electric vehicle internal permanent magnet synchronous motor of 11.5KW, and Figure 10 is the characteristic working curve of the rated power of the third embodiment of the invention used for electric vehicle internal permanent magnet synchronous motor that is 11.5KW;
In Fig. 9, Figure 10, vertical pivot P is output power of motor number line, and vertical pivot I is current values axle, and vertical pivot η is efficiency number line, transverse axis θ is angle of torsion number line, curve P is output power curve, and curve I is current curve, and curve η is efficiency curve, Pn is rated output power, In is rated current, and η n is rated efficiency value, and θ n is nominal torque angle;
From Fig. 9, Figure 10, existing rated power is that the rated point efficiency of the used for electric vehicle internal permanent magnet synchronous motor of 11.5KW is 92%, the rated point efficiency of the used for electric vehicle internal permanent magnet synchronous motor of third embodiment of the invention is 94.35%, third embodiment of the invention is compared the existing motor of same specification, and electric efficiency is obviously promoted.
Claims (7)
1. a used for electric vehicle internal permanent magnet synchronous motor, comprise stator and rotor, described stator in the form of a ring, its inner ring is alternately formed with a plurality of stator tooths and a plurality of stator slot, the notch of described stator slot is over against rotor, the increment that described stator tooth is stator tooth towards one end of the track ring heart, the flank of tooth that the increment end face of stator tooth is stator tooth, the quantity of stator tooth is three multiple, it is characterized in that:
The flank of tooth of each stator tooth all offers at least one increment groove, described increment groove semicircular in shape in the radial section of stator tooth, and the notch of increment groove is towards the track ring heart, and quantity and/or the installation position of the increment groove on adjacent stators tooth are different each other.
2. used for electric vehicle internal permanent magnet synchronous motor according to claim 1, it is characterized in that: each stator tooth is divided into three classes, be respectively category-A tooth, category-B tooth, C class tooth, the arrangement mode of each stator tooth is: along stator circumferentially, repeat category-A tooth, category-B tooth, this order of C class tooth;
In the radial section of stator tooth, the flank of tooth of stator tooth has three cloth groove points, these three cloth groove points are respectively the first cloth groove point, the second cloth groove point, the 3rd cloth groove point, and these three cloth groove points circumferential equi-spaced apart along stator on the flank of tooth of stator tooth distributes, and the second cloth groove point is wherein positioned at the flank of tooth center of stator tooth;
Category-A tooth, C class tooth respectively have an increment groove, category-B tooth has two increment grooves, the increment groove of category-A tooth is laid in the second cloth groove point, and two increment grooves of category-B tooth are laid in respectively the first cloth groove point, the 3rd cloth groove point, and the increment groove of C class tooth is laid in the 3rd cloth groove point.
3. used for electric vehicle internal permanent magnet synchronous motor according to claim 2, is characterized in that: the quantity of described stator slot has 12 or 18 or 24.
4. used for electric vehicle internal permanent magnet synchronous motor according to claim 1, is characterized in that: the quantity of described stator tooth is four multiple;
Each stator tooth is divided into four classes, is respectively category-A tooth, category-B tooth, C class tooth, D class tooth, and the arrangement mode of each stator tooth is: along stator circumferentially, repeat category-A tooth, category-B tooth, D class tooth, this order of C class tooth;
In the radial section of stator tooth, the flank of tooth of stator tooth has three cloth groove points, these three cloth groove points are respectively the first cloth groove point, the second cloth groove point, the 3rd cloth groove point, and these three cloth groove points circumferential equi-spaced apart along stator on the flank of tooth of stator tooth distributes, and the second cloth groove point is wherein positioned at the flank of tooth center of stator tooth;
Category-A tooth, C class tooth, D class tooth respectively have an increment groove, category-B tooth has two increment grooves, the increment groove of category-A tooth is laid in the second cloth groove point, two increment grooves of category-B tooth are laid in respectively the first cloth groove point, the 3rd cloth groove point, the increment groove of C class tooth is laid in the 3rd cloth groove point, and the increment groove of D class tooth is laid in the first cloth groove point.
5. used for electric vehicle internal permanent magnet synchronous motor according to claim 4, is characterized in that: the quantity of described stator slot has 24.
6. according to the used for electric vehicle internal permanent magnet synchronous motor described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that, the radial section of described stator slot has following feature: bottom land two bights of stator slot have chamfering, stator slot has a center line, the axle center of this center line process rotor, and the radial section of stator slot is divided into symmetrical two halves.
7. according to the used for electric vehicle internal permanent magnet synchronous motor described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that, the fillet surface in bottom land two bights of described stator slot is intersected in the center line of stator slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310572862.7A CN103560634B (en) | 2013-11-18 | 2013-11-18 | Internal permanent magnet synchronous motor used for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310572862.7A CN103560634B (en) | 2013-11-18 | 2013-11-18 | Internal permanent magnet synchronous motor used for electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103560634A true CN103560634A (en) | 2014-02-05 |
| CN103560634B CN103560634B (en) | 2015-11-18 |
Family
ID=50014825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310572862.7A Active CN103560634B (en) | 2013-11-18 | 2013-11-18 | Internal permanent magnet synchronous motor used for electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103560634B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018040365A1 (en) * | 2016-08-31 | 2018-03-08 | 徐州南普机电科技有限公司 | Method for machining permanent magnetic direct-current brushless motor |
| CN108551213A (en) * | 2018-04-04 | 2018-09-18 | 东南大学 | A method of inhibit interior permanent magnet machines to vibrate and improve torque performance |
| CN108964532A (en) * | 2018-05-31 | 2018-12-07 | 南京航空航天大学 | Three-level formula brushless synchronous machine sublevel segmentation start control system and method |
| CN110571998A (en) * | 2018-06-06 | 2019-12-13 | 舍弗勒技术股份两合公司 | Stator for permanent magnet motor and permanent magnet motor |
| GB2590677B (en) * | 2019-12-23 | 2023-09-27 | Dyson Technology Ltd | A motor core |
| CN118017788A (en) * | 2024-04-10 | 2024-05-10 | 华东交通大学 | Permanent magnet synchronous motor structure of electric driving system of electric automobile and optimization method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0841738A1 (en) * | 1996-05-24 | 1998-05-13 | Matsushita Electric Industrial Co., Ltd. | Motor |
| US20030230947A1 (en) * | 2002-06-14 | 2003-12-18 | Islam Mohammad S. | Fault tolerant motor actuator for steer by wire system |
| CN101001038A (en) * | 2006-01-13 | 2007-07-18 | 日本电产三协株式会社 | Permanent magnet type synchronous motor |
| CN101789663A (en) * | 2010-01-08 | 2010-07-28 | 李嘉琛 | Vehicle permanent magnetic synchronous motor and stator iron core capable of weakening magnetic resistance moment |
| CN202068306U (en) * | 2011-05-04 | 2011-12-07 | 浙江博望科技发展有限公司 | Three-phase permanent magnetic servo motor with void slot structure |
| CN203574518U (en) * | 2013-11-18 | 2014-04-30 | 上海特波电机有限公司 | Stator of permanent magnet synchronous motor |
-
2013
- 2013-11-18 CN CN201310572862.7A patent/CN103560634B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0841738A1 (en) * | 1996-05-24 | 1998-05-13 | Matsushita Electric Industrial Co., Ltd. | Motor |
| US20030230947A1 (en) * | 2002-06-14 | 2003-12-18 | Islam Mohammad S. | Fault tolerant motor actuator for steer by wire system |
| CN101001038A (en) * | 2006-01-13 | 2007-07-18 | 日本电产三协株式会社 | Permanent magnet type synchronous motor |
| CN101789663A (en) * | 2010-01-08 | 2010-07-28 | 李嘉琛 | Vehicle permanent magnetic synchronous motor and stator iron core capable of weakening magnetic resistance moment |
| CN202068306U (en) * | 2011-05-04 | 2011-12-07 | 浙江博望科技发展有限公司 | Three-phase permanent magnetic servo motor with void slot structure |
| CN203574518U (en) * | 2013-11-18 | 2014-04-30 | 上海特波电机有限公司 | Stator of permanent magnet synchronous motor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018040365A1 (en) * | 2016-08-31 | 2018-03-08 | 徐州南普机电科技有限公司 | Method for machining permanent magnetic direct-current brushless motor |
| CN108551213A (en) * | 2018-04-04 | 2018-09-18 | 东南大学 | A method of inhibit interior permanent magnet machines to vibrate and improve torque performance |
| CN108964532A (en) * | 2018-05-31 | 2018-12-07 | 南京航空航天大学 | Three-level formula brushless synchronous machine sublevel segmentation start control system and method |
| CN110571998A (en) * | 2018-06-06 | 2019-12-13 | 舍弗勒技术股份两合公司 | Stator for permanent magnet motor and permanent magnet motor |
| GB2590677B (en) * | 2019-12-23 | 2023-09-27 | Dyson Technology Ltd | A motor core |
| CN118017788A (en) * | 2024-04-10 | 2024-05-10 | 华东交通大学 | Permanent magnet synchronous motor structure of electric driving system of electric automobile and optimization method thereof |
| CN118017788B (en) * | 2024-04-10 | 2024-06-11 | 华东交通大学 | Permanent magnet synchronous motor structure of electric driving system of electric automobile and optimization method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103560634B (en) | 2015-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3136559B1 (en) | Permanent magnet synchronous motor and rotor thereof | |
| US8436504B2 (en) | Stator for an electric machine | |
| JP6231521B2 (en) | Three-phase motor with low detent torque | |
| CN103560634B (en) | Internal permanent magnet synchronous motor used for electric vehicle | |
| Xu et al. | Cogging torque reduction of a hybrid axial field flux-switching permanent-magnet machine with three methods | |
| US20140175932A1 (en) | Motor and rotor thereof | |
| CN104221261A (en) | Permanent magnet motor | |
| CN203251159U (en) | Double layer V type built-in permanent magnet motor rotor applied to electric car | |
| CN105186818A (en) | Permanent magnet synchronous motor with hybrid magnetic circuit arrangement | |
| CN104410234A (en) | Spindle synchronous motor with wide speed regulation range for lathe | |
| CN104638864A (en) | Permanent magnet motor and method for accelerating rotating speed of permanent magnet motor | |
| CN101924445B (en) | Permanent magnetic synchronous motor in wide weak-magnetic speed-regulating range | |
| CN101789663B (en) | Vehicle permanent magnetic synchronous motor | |
| CN102684342A (en) | Built-in permanent magnet motor rotor and permanent magnet motor with rotor | |
| CN104883019A (en) | Stator permanent magnet mixed excitation vernier motor | |
| CN103078464B (en) | Built-in permanent magnet synchronous motor | |
| CN107425629B (en) | Permanent magnet motor rotor | |
| CN102790502B (en) | Permanent magnet synchronous motor | |
| He et al. | Evaluation of fractional slot concentrated winding permanent magnet synchronous machine for electric vehicle application | |
| Sulaiman et al. | Skewing and notching configurations for torque pulsation minimization in spoke-type interior permanent magnet motors | |
| CN205725213U (en) | The low fluctuation slotted eye convolution p-m rotor of motor in electric automobile | |
| CN203574518U (en) | Stator of permanent magnet synchronous motor | |
| Wei et al. | Presentation of a double-stator axial-flux permanent-magnet disk motor with soft magnetic composite cores and its cogging torque reduction | |
| CN214756133U (en) | Irregular magnetic flux barrier synchronous reluctance motor | |
| Rallabandi et al. | Axial-flux PM synchronous machines with air-gap profiling and very high ratio of spoke rotor poles to stator concentrated coils |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |