CN208128106U - A kind of kart internal permanent magnet synchronous motor - Google Patents
A kind of kart internal permanent magnet synchronous motor Download PDFInfo
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- CN208128106U CN208128106U CN201820163688.9U CN201820163688U CN208128106U CN 208128106 U CN208128106 U CN 208128106U CN 201820163688 U CN201820163688 U CN 201820163688U CN 208128106 U CN208128106 U CN 208128106U
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Abstract
The utility model relates to a kind of kart internal permanent magnet synchronous motor, including stator core, rotor core and armature spindle, stator core is equipped with several stator tooths, forms stator slot between adjacent stator tooth, the increment of stator tooth offers arch void slot；It is circumferentially arranged several to the V-type magnetic pole towards rotor outer periphery face on rotor core；Each pair of V-type magnetic pole is arranged using the symmetrical middle line being located between each pair of V-type magnetic pole as axial symmetry；The extremely interior magnetic bridge of each V-type magnetic pole and the width of interpolar magnetic bridge are equal；The outer diameter of rotor core includes the eccentric arc being correspondingly arranged with V-type magnetic pole, eccentricity is arranged between the center of circle of eccentric arc and the center of circle of armature spindle, and the center of circle of each eccentric arc is identical relative to the eccentricity between the center of circle of armature spindle；Rotor core offers several ventilation holes being correspondingly arranged with each pair of V-type magnetic pole；Rotor core offers several between V-type magnetic pole and armature spindle, along the rivet hole of annular spread.
Description
Technical field
The utility model relates to permanent magnet synchronous motor fields, same more particularly, to a kind of kart built-in type permanent-magnet
Walk motor.
Background technique
Magneto has the characteristics that close high power, high efficiency, high reliability, in industrial production and home life field
It is widely used.Currently, permanent-magnet material occupies very big ratio in the cost of magneto, this causes Permanent Magnet and Electric
Machine competitiveness decline in low and middle-end application.To improve permanent magnetism utilization rate and magneto price competitiveness, to magneto
Structure optimizes, and improves its power and the torque density research topic important as domestic and international expert and scholars.
Interior permanent magnet machines are the synthesis of a kind of rotor embedded permanent-magnet torque and reluctance torque.Therefore, by rotor
The optimization design of magnetic structure and embedded permanent magnet trough realizes the reasonable disposition of permanent-magnet torque and reluctance torque, improves Permanent Magnet and Electric
Machine power density, torque density and efficiency have important theory significance and economic value.
Permanent magnetic synchronous motor structure is simple, loss is small, power factor is high, the series of advantages such as high-efficient, however permanent magnetism is same
Walking motor, there are some defects, such as torque ripple, will affect the control precision of system, cause vibration and noise, for workability
The demanding place of energy, torque ripple standard requirements are higher.For weaken motor torque ripple, in motor body design side
Face, existing surface-mounted permanent magnet machine rotor generally use not uniform thickness magnet steel or the oblique pole of disjunction or skewed slot；And for built-in turn
Minor structure keeps the utilization rate of magnet steel relatively low since the leakage field of magnetic circuit is larger, and rotor structure is unreasonable in addition, often results in
The overload capacity of motor is poor, power density is relatively low, stray loss and rotor eddy current loss are bigger than normal etc..How the leakage of magnet steel is reduced
Magnetic improves the utilization rate of magnet steel to improve the power density of motor and overload capacity and become internal permanent magnet synchronous motor design
One key point.
Utility model content
The technical issues of the utility model solves is to overcome the deficiencies of existing technologies, and provides a kind of magnetic field for making main magnetic circuit
Enhancing, the leakage field for reducing rotor core reduce no-load back electromotive force harmonic content, improve built in the kart use of motor performance
Formula permanent magnet synchronous motor.
The utility model aim is achieved through the following technical solutions：
Improve a kind of kart internal permanent magnet synchronous motor, including stator core, rotor core and armature spindle, institute
It states stator core to cover in the outside of rotor core, the rotor core covers in the outside of armature spindle, if the stator core is equipped with
A stator tooth is done, forms stator slot between the adjacent stator tooth, the increment of the stator tooth offers arch void slot；
It is circumferentially arranged several to the V-type magnetic pole towards rotor outer periphery face on the rotor core；It is each to the V type magnetic
Pole is arranged using the symmetrical middle line being located between each pair of V-type magnetic pole as axial symmetry；The width of the extremely interior magnetic bridge of each V-type magnetic pole
Degree is equal；The width of the interpolar magnetic bridge of each V-type magnetic pole is equal；
The outer diameter of the rotor core includes the eccentric arc being correspondingly arranged with V-type magnetic pole, the center of circle of the eccentric arc
Eccentricity is set between the center of circle of the armature spindle, and the center of circle of each eccentric arc is relative between the center of circle of armature spindle
Eccentricity it is identical；
The rotor core offers several ventilation holes being correspondingly arranged with each pair of V-type magnetic pole；
The rotor core offers several between V-type magnetic pole and armature spindle, along the rivet hole of annular spread.
Further, the center of circle angular region of the eccentric arc is 135-155 degree.
Further, the width range of the interpolar magnetic bridge is 0.6-1 millimeters.
Further, the length range of the eccentricity is 15-18 millimeters.
Further, the ventilation hole is regular polygon.
Further, the internal permanent magnet synchronous motor is specially 24 slot, 8 pole motor.
Further, the quantity of the ventilation hole is 8.
Further, the symmetry axis of each ventilation hole is overlapped with the symmetrical middle line of a pair of of V-type magnetic pole respectively.
Further, the rotor core further includes positioned at center for the axis hole with armature spindle Matching installation, institute
The side wall for stating axis hole is equipped with for the keyway fixed with armature spindle positioning.
Further, the rotor core is formed by silicon steel plate stacking.
Compared with prior art, the utility model has the advantages that：
1, the interior magnetic bridge by setting interpolar magnetic bridge and extremely, can effectively reduce in the case where not influencing main magnetic circuit
Interpolar and extremely interior leakage field, make the magnetic field-enhanced of main magnetic circuit, reduce the leakage field of rotor core, increase the power density of motor.
2) eccentric processing is carried out to rotor core, non-load air gap field harmonic content can be reduced, improve unloaded air gap magnetic
Close sine degree reduces no-load back electromotive force harmonic content, reduces unloaded flux density harmonic wave size, improves fundametal compoment, improves electronic
Machine performance.
3) rotor core adds ventilation hole, can not only optimize magnetic circuit, but also can mitigate rotor core weight.
4) by adding arch void slot in stator root portion, to make air gap magnetic density waveform close to sine wave, reach weakening
The purpose of cogging torque reduces the torque pulsation of motor, keeps motor work more steady, optimizes the working characteristics of motor.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of kart internal permanent magnet synchronous motor；
Fig. 2 is a kind of structural schematic diagram of the stator core of kart internal permanent magnet synchronous motor；
Fig. 3 is a kind of structural schematic diagram of the rotor core of kart internal permanent magnet synchronous motor.
Wherein, 1- stator core, 2- rotor core, 3- armature spindle, 4- axis hole, 5- keyway, 6- stator tooth, 7- stator slot,
8- void slot, 9- permanent magnet trough, 10- magnet isolation tank, the extremely interior magnetic bridge of 11-, 12- interpolar magnetic bridge, 13- eccentric arc, 14- ventilation
Hole, 15- rivet hole.
Specific embodiment
The present invention is further illustrated With reference to embodiment, wherein attached drawing only for illustration,
What is indicated is only schematic diagram, rather than pictorial diagram, should not be understood as the limitation to this patent；Reality in order to better illustrate the present invention
Example is applied, the certain components of attached drawing have omission, zoom in or out, and do not represent the size of actual product；To those skilled in the art
For, the omitting of some known structures and their instructions in the attached drawings are understandable.
Embodiment
A kind of kart internal permanent magnet synchronous motor as shown in Figures 1 to 3, including stator core, rotor core and
Armature spindle, stator core cover in the outside of rotor core, and rotor core covers in the outside of armature spindle, and stator core is folded by silicon steel sheet
It presses, rotor core is formed by silicon steel plate stacking；Rotor core includes the axis hole positioned at center, the side wall of axis hole be equipped with
The keyway of armature spindle flat key matching setting.Stator core is equipped with 24 stator tooths, forms stator slot between adjacent stator tooth, fixed
Sub- tooth and stator slot are in symmetrical structure in radial direction, and stator tooth is the increment of stator tooth towards one end of rotor, stator tooth
Increment centre offers arch void slot.The circumferentially arranged 4 pairs V-type magnetic poles towards rotor outer periphery face on rotor core, often
Two V-type magnetic poles are a pair, wherein the size of each pair of V-type magnetic pole, shape, size is identical, and each pair of V-type magnetic pole is each to be located at
It is axial symmetry setting to the symmetrical middle line between V-type magnetic pole, each V-type magnetic pole includes the identical permanent magnet trough of two shapes, often
The both ends of a permanent magnet trough are equipped with magnet isolation tank, and the connected position of two permanent magnet troughs is equipped with magnetic bridge in extremely, each V-type magnetic pole
Extremely interior magnetic bridge width is identical, and two permanent magnet troughs of each V-type magnetic pole are arranged using extremely interior magnetic bridge as axial symmetry；Two permanent magnetism
The disconnected one end of body slot is equipped with the equal interpolar magnetic bridge of width with rotor diameter respectively, and the interpolar of each V-type magnetic pole is every magnetic
The width of bridge is equal, and the width range of magnetic bridge is between 0.6-1 millimeters, and preferably 0.8 millimeter；The outer diameter packet of rotor core
The eccentric arc being correspondingly arranged with V-type magnetic pole is included, eccentricity is set between the center of circle of each eccentric arc and the center of circle of armature spindle,
And the center of circle of each eccentric arc is identical relative to the eccentricity between the center of circle of armature spindle, range between 15-18 millimeters,
It is preferred that 16.75 millimeters；Wherein the center of circle angular region of eccentric arc is between 135-155 degree, and preferably 150 degree.Rotor core is in V-type
Offer regular polygon ventilation hole identical with V-type number of magnetic poles between magnetic pole and armature spindle, regular pentagon as shown in Figure 2,
Each regular polygon ventilation hole is arranged by symmetry axis of the symmetrical middle line of two neighboring V-type magnetic pole.Rotor core is also provided with edge
Annular spread, between V-type magnetic pole and armature spindle, with the spaced rivet hole of ventilation hole.
The beneficial effects of the utility model：By the way that interpolar magnetic bridge and extremely interior magnetic bridge is arranged, main magnetic can not influenced
In the case where roads, interpolar and extremely interior leakage field are effectively reduced, makes the magnetic field-enhanced of main magnetic circuit, reduces the leakage field of rotor core,
Increase the power density of motor.Eccentric processing is carried out to rotor core, non-load air gap field harmonic content can be reduced, is improved empty
Air gap flux density sine degree is carried, no-load back electromotive force harmonic content is reduced, reduces unloaded flux density harmonic wave size, improves fundametal compoment,
Improve motor performance.Rotor core adds ventilation hole, can not only optimize magnetic circuit, but also can mitigate rotor core weight.
Arch void slot is added by the increment in stator tooth, to make air gap magnetic density waveform close to sine wave, reaches weakening cogging torque
Purpose, reduce the torque pulsation of motor, make motor work it is more steady, optimize the working characteristics of motor.
Obviously, above-described embodiment is only intended to clearly illustrate the technical solution of the utility model example, and simultaneously
Non- is limitations of the embodiments of the present invention.For those of ordinary skill in the art, above explained
On the basis of can also make other variations or changes in different ways.There is no need and unable to give thoroughly all embodiments
It lifts.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc. should be included in this
Within the protection scope of utility model claims.
Claims (10)
1. a kind of kart internal permanent magnet synchronous motor, including stator core, rotor core and armature spindle, the stator iron
Core retainer plate is covered in the outside of rotor core, the rotor core in the outside of armature spindle, which is characterized in that the stator core is equipped with
Several stator tooths form stator slot between the adjacent stator tooth, and the increment of the stator tooth offers arch void slot；
It is circumferentially arranged several to the V-type magnetic pole towards rotor outer periphery face on the rotor core；It is each to the V-type magnetic pole with position
Symmetrical middle line between each pair of V-type magnetic pole is axial symmetry setting；The width of the extremely interior magnetic bridge of each V-type magnetic pole is homogeneous
Deng；The width of the interpolar magnetic bridge of each V-type magnetic pole is equal；
The outer diameter of the rotor core includes the eccentric arc being correspondingly arranged with V-type magnetic pole, the center of circle of the eccentric arc and institute
It states and eccentricity is set between the center of circle of armature spindle, and the center of circle of each eccentric arc is relative to inclined between the center of circle of armature spindle
The heart is away from identical；
The rotor core offers several ventilation holes being correspondingly arranged with each pair of V-type magnetic pole；
The rotor core offers several between V-type magnetic pole and armature spindle, along the rivet hole of annular spread.
2. kart internal permanent magnet synchronous motor according to claim 1, which is characterized in that the eccentric arc
Center of circle angular region is 135-155 degree.
3. kart internal permanent magnet synchronous motor according to claim 1, which is characterized in that the interpolar magnetic bridge
Width range be 0.6-1 millimeters.
4. kart internal permanent magnet synchronous motor according to claim 1, which is characterized in that the length of the eccentricity
Spending range is 15-18 millimeters.
5. kart internal permanent magnet synchronous motor according to claim 1, which is characterized in that the ventilation hole is positive
Polygon.
6. kart internal permanent magnet synchronous motor according to claim 5, which is characterized in that the built-in type permanent-magnet
Synchronous motor is specially 24 slot, 8 pole motor.
7. kart internal permanent magnet synchronous motor according to claim 6, which is characterized in that the number of the ventilation hole
Amount is 8.
8. according to the described in any item kart internal permanent magnet synchronous motors of claim 5-7, which is characterized in that Ge Gesuo
The symmetry axis for stating ventilation hole is overlapped with the symmetrical middle line of a pair of of V-type magnetic pole respectively.
9. kart internal permanent magnet synchronous motor according to claim 1-7, which is characterized in that described turn
Sub- iron core further includes positioned at center for the axis hole with armature spindle Matching installation, the side wall of the axis hole be equipped with for turn
The fixed keyway of sub- axis positioning.
10. kart internal permanent magnet synchronous motor described in -7 any one according to claim 1, which is characterized in that institute
Rotor core is stated to be formed by silicon steel plate stacking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820163688.9U CN208128106U (en) | 2018-01-31 | 2018-01-31 | A kind of kart internal permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820163688.9U CN208128106U (en) | 2018-01-31 | 2018-01-31 | A kind of kart internal permanent magnet synchronous motor |
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| Publication Number | Publication Date |
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| CN208128106U true CN208128106U (en) | 2018-11-20 |
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| CN201820163688.9U Active CN208128106U (en) | 2018-01-31 | 2018-01-31 | A kind of kart internal permanent magnet synchronous motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108011487A (en) * | 2018-01-31 | 2018-05-08 | 株洲罗伯特电机有限公司 | A kind of kart internal permanent magnet synchronous motor |
| CN113162356A (en) * | 2021-03-04 | 2021-07-23 | 北京航空航天大学 | High power density driver for high-altitude unmanned aerial vehicle |
-
2018
- 2018-01-31 CN CN201820163688.9U patent/CN208128106U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108011487A (en) * | 2018-01-31 | 2018-05-08 | 株洲罗伯特电机有限公司 | A kind of kart internal permanent magnet synchronous motor |
| CN113162356A (en) * | 2021-03-04 | 2021-07-23 | 北京航空航天大学 | High power density driver for high-altitude unmanned aerial vehicle |
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