CN207124499U - Rotor and permagnetic synchronous motor - Google Patents
Rotor and permagnetic synchronous motor Download PDFInfo
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- CN207124499U CN207124499U CN201721034526.7U CN201721034526U CN207124499U CN 207124499 U CN207124499 U CN 207124499U CN 201721034526 U CN201721034526 U CN 201721034526U CN 207124499 U CN207124499 U CN 207124499U
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Abstract
The utility model provides a kind of rotor and permagnetic synchronous motor, and the rotor includes rotor core and rotating shaft；The rotor core includes multiple iron core units being axially distributed, and has the equally distributed magnetic pole of multiple circumferencial directions along the iron core unit in each iron core unit, it is characterised in that：There are multiple first Flux modulation groove groups, and every one first Flux modulation groove group corresponds to a magnetic pole on the iron core unit outer surface；Each first Flux modulation groove group includes two the first grooves being axially distributed on the surface of the iron core unit respectively.The utility model can optimize air gap magnetic density waveform, weaken the harmonic component in back-emf, reduce motor torque fluctuation, noise, vibration and the sound vibration roughness performance of lifting motor itself by opening up Flux modulation groove in the outer surface of rotor core.
Description
Technical field
Machine field is the utility model is related to, more specifically to a kind of rotor and permagnetic synchronous motor.
Background technology
With global warming and the continuous aggravation of energy crisis, new-energy automobile substitute existing fuel-engined vehicle into
For the trend of certainty.The features such as permagnetic synchronous motor is due to high torque density, high efficiency, high power density and turn into new energy vapour
The first choice of car motor.
Important component of the permagnetic synchronous motor as new-energy automobile power assembly, it, which needs to provide for vehicle, continues
Power, this not only needs main drive motor to have broad speed adjustable range, and requires that motor has unique torque characteristics.Mesh
SPM (IPM, Intelligent Power Module) motor of preceding in the market main flow mostly uses " yi word pattern "
The Magnetic circuit topologies structure of " V-type " arrangement, the back-emf index using the motor of this structure is high, is advantageous to meet motor low speed
The demand of big torque.
But when the permagnetic synchronous motor using said structure is in high-speed cruising, the limitation of controlled device terminal voltage, this is forever
Magnetic-synchro motor torque ripple in high-speed cruising is more serious.
Utility model content
The technical problems to be solved in the utility model is, for above-mentioned permagnetic synchronous motor in high-speed cruising torque ripple
The problem of dynamic more serious, there is provided a kind of rotor and permagnetic synchronous motor.
The technical scheme that the utility model solves above-mentioned technical problem is to provide a kind of rotor, including rotor core
And rotating shaft；The rotor core includes multiple iron core units being axially distributed, and has in each iron core unit multiple along described
The equally distributed magnetic pole of circumferencial direction of iron core unit, there are multiple first Flux modulation grooves on the iron core unit outer surface
Group, and every one first Flux modulation groove group corresponds to a magnetic pole；Each first Flux modulation groove group includes two difference
On the surface of the iron core unit and along the first groove being axially distributed of the iron core unit.
In rotor described in the utility model, each magnetic pole includes the first slot for being fitted with the first magnet steel
Portion, two be located at the first socket both sides and the first symmetrical auxiliary shield groove respectively；Described two first groove difference
Positioned at the inner side of the extended line of the first auxiliary shield groove.
In rotor described in the utility model, each magnetic pole includes the second slot for being fitted with the second magnet steel
Portion, two be located at the second socket both sides and the second symmetrical auxiliary shield groove respectively, second socket is located at institute
State the internal layer of the first socket and parallel to first socket；There are multiple second magnetic fluxs on the iron core unit outer surface
Preparation vessel group, and every one second Flux modulation groove group corresponds to a magnetic pole；Each second Flux modulation groove group includes two
Bar is respectively on the surface of the iron core unit and along the second groove being axially distributed of the iron core unit.
In rotor described in the utility model, described two second grooves are located at second auxiliary shield respectively
The inner side of the extended line of groove.
In rotor described in the utility model, each magnetic pole also includes the 3rd slot for being fitted with magnet steel
Portion, two be located at the 3rd socket both sides and the 3rd symmetrical auxiliary shield groove respectively, the 3rd socket is located at institute
State the internal layer of the second socket and parallel to second socket.
In rotor described in the utility model, described two second grooves are located at the 3rd auxiliary shield respectively
The inner side of the extended line of groove.
In rotor described in the utility model, described two second grooves are located at second auxiliary shield respectively
The inner side of the extended line of groove；There is multiple 3rd Flux modulation groove groups, and every one the 3rd magnetic flux on the iron core unit outer surface
Preparation vessel group corresponds to a magnetic pole；Each 3rd Flux modulation groove group includes two articles respectively in the table of the iron core unit
The 3rd groove that face is axially distributed；Described two 3rd grooves are located at the interior of the extended line of the 3rd auxiliary shield groove respectively
Side.
In rotor described in the utility model, first groove and the second groove are respectively that section is semicircle
Groove.
In rotor described in the utility model, the radius in the section of second groove is more than cutting for the first groove
The radius in face.
The utility model also provides a kind of permagnetic synchronous motor, including casing and the stator in casing, the permanent magnetism
Synchronous motor also includes rotor as described above.
Rotor and permagnetic synchronous motor of the present utility model, Flux modulation is opened up by the outer surface in rotor core
Groove, air gap magnetic density waveform can be optimized, weaken the harmonic component in back-emf, reduce motor torque fluctuation, lifting motor itself
NVH (Noise, Vibration, Harshness, noise, vibration and sound vibration roughness) performance.
Brief description of the drawings
Fig. 1 is the schematic diagram for the rotor embodiment that the utility model has one layer of magnet steel；
Fig. 2 is the schematic diagram for the rotor embodiment that the utility model has two layers of magnet steel；
Fig. 3 is the schematic diagram for the rotor embodiment that the utility model has three layers of magnet steel；
Fig. 4 is the schematic diagram of the utility model permagnetic synchronous motor embodiment.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
As shown in figure 1, it is the schematic diagram of the utility model rotor embodiment, it is same that the rotor can be applied to permanent magnetism
Walk motor.Rotor 1 in the present embodiment includes rotor core and rotating shaft, and rotor core is installed in rotating shaft.Above-mentioned turn
Sub- iron core includes multiple iron core units being axially distributed, and each iron core unit can be made up of the rotor punching of multiple superpositions.It is each
There is the equally distributed magnetic pole of multiple circumferencial directions along the iron core unit, and each magnetic pole is equiped with by one in iron core unit
The first socket 111 and two the first auxiliary shield grooves 112 of first magnet steel 113 are formed, and above-mentioned first socket 111 is in
Heart line is symmetrical, and the center line of first socket 111 is the radial direction of the iron core unit of the position of the first socket 111
Line, two the first auxiliary shield grooves 112 are respectively positioned at the both sides of the first socket 111 and symmetrical (symmetry axis is through the
The RADIAL at the center of one socket 111).
Also there is multiple first Flux modulation groove groups, and every one first Flux modulation groove on the outer surface of above-mentioned iron core unit
Group corresponds to a magnetic pole.Specifically, every one first Flux modulation groove group includes two respectively on the surface of iron core unit and edge
The first groove 114 being axially distributed of iron core unit.
The harmonic component that position, shape and the size of the first groove of above-mentioned two 114 can weaken as needed is adjusted.
Such as two the first grooves 114 can be respectively arranged to the inner side of the extended line of the first auxiliary shield groove 112, and ensureing structure
In the case of intensity, obtain as far as possible close to the first auxiliary shield groove 112.The section of above-mentioned first groove 114 can be semicircle, and
The semicircular radius can be the 20/1/1000th~thousand of rotor core diameter.
Above-mentioned rotor can be adjusted by opening up the first Flux modulation groove group in surface (i.e. the outer surface of iron core unit)
The air gap magnetic density waveform economized on electricity between machine rotor and stator, reduces motor torque fluctuation, optimization motor in itself NVH (Noise,
Vibration, Harshness, noise, vibration and sound vibration roughness) performance.
As shown in Fig. 2 in another embodiment of the present utility model, the magnetic pole of iron core unit is except including the first socket
111st, outside the first auxiliary shield groove 112 and the first magnet steel 113, in addition to it is fitted with the second socket 121 of the second magnet steel 123
And two the second auxiliary shield grooves 122, and two the second auxiliary shield grooves 122 are located at the both sides of the second socket 121 respectively
And symmetrical (symmetry axis is the RADIAL through the center of the first socket 111).Above-mentioned second socket 121 is inserted positioned at first
The internal layer (i.e. the first socket 111 closer to the outer surface of iron core unit) of groove portion 111 and parallel to the first socket 111, and
The width of second socket 121 be more than the second socket 121 width (i.e. along its position iron core unit circumferential chi
It is very little).
In the present embodiment, also there is multiple second Flux modulation groove groups, and every one second on the outer surface of iron core unit
Flux modulation groove group corresponds to a magnetic pole；Every one second Flux modulation groove group include two respectively on the surface of iron core unit simultaneously
Along the second groove 124 being axially distributed of iron core unit.
The harmonic component that position, shape and the size of the second groove of above-mentioned two 124 can weaken as needed is adjusted.
Such as two the second grooves 124 can be respectively arranged to the inner side of the extended line of the second auxiliary shield groove 122, and ensureing structure
In the case of intensity, obtain as far as possible close to the second auxiliary shield groove 122.The depth of above-mentioned second groove 124 is more than the first groove
114 depth, such as when the section of the second groove 124 is semicircle, the semicircular radius can be rotor core diameter
40/20/1000ths~thousand.
As shown in figure 3, in another embodiment of the present utility model, each magnetic pole, which may also include, is fitted with the 3rd magnet steel
133 the 3rd socket 131 and two the 3rd auxiliary shield grooves 132, two the 3rd auxiliary shield grooves 132 are located at the 3rd respectively
The both sides of socket 131 and it is symmetrical (symmetry axis be through the center of the first socket 111 RADIAL).Above-mentioned 3rd socket
131 are located at the internal layer of the second socket 121 and parallel to the second socket 121, and the width of the 3rd socket 131 is more than second
Socket 121 width (i.e. along its position iron core unit circumferencial direction size).
When each magnetic pole has three layers of magnet steel, (i.e. each magnetic pole includes the first socket 111 and two the first auxiliary shields
Groove 112, the second socket 121 and two the second auxiliary shield grooves 122, the 3rd socket 131 and two the 3rd auxiliary shield grooves
132), can be by the first auxiliary screen when, and the surface of iron core unit has the first auxiliary shield groove group and the second auxiliary shield groove group
Cover groove group two the first grooves 114 be arranged on the first auxiliary shield groove 112 extended line inner side；And the second auxiliary shield groove
Two the second grooves 124 can then be respectively arranged at the 3rd auxiliary shield groove 132 extended line inner side, and ensure structure it is strong
In the case of degree, obtain as far as possible close to the 3rd auxiliary shield groove 132 (i.e. the second auxiliary shield groove 122 and the 3rd auxiliary shield groove
The outer surface of the iron core unit of part between 132).
In addition, can also have multiple 3rd Flux modulation groove groups on the outer surface of iron core unit, and every one the 3rd magnetic flux is adjusted
Groove group processed corresponds to a magnetic pole；Every one the 3rd Flux modulation groove group includes two articles respectively on the surface of iron core unit and along iron core
The 3rd groove (depth of the 3rd groove is more than the depth of the second groove 124) being axially distributed of unit, now, can be by second
Two the second grooves 124 of auxiliary shield groove are arranged on the inner side of the extended line of the second auxiliary shield groove 122, and the 3rd auxiliary screen
Cover groove two the 3rd grooves be then respectively arranged at the 3rd auxiliary shield groove 132 extended line inner side.
As shown in figure 4, the present invention also provides a kind of permagnetic synchronous motor, including casing and stator 2 in casing with
And the rotor 1 (or rotor 1 shown in Fig. 1 or Fig. 2) shown in Fig. 3.The stator core of said stator 2 can be wound with
Three-phase symmetrical bilayer armature winding.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should
It is defined by scope of the claims.
Claims (10)
1. a kind of rotor, including rotor core and rotating shaft；The rotor core includes multiple iron core units being axially distributed,
And there is the equally distributed magnetic pole of multiple circumferencial directions along the iron core unit in each iron core unit, it is characterised in that：Institute
Stating has multiple first Flux modulation groove groups on iron core unit outer surface, and each first Flux modulation groove group corresponds to one
Individual magnetic pole；Each first Flux modulation groove group includes two respectively on the surface of the iron core unit and along the iron core list
The first groove being axially distributed of member.
2. rotor according to claim 1, it is characterised in that：Each magnetic pole includes being fitted with the first magnet steel
First socket, two be located at the first socket both sides and the first symmetrical auxiliary shield groove respectively；Described two first
Groove is located at the inner side of the extended line of the first auxiliary shield groove respectively.
3. rotor according to claim 2, it is characterised in that：Each magnetic pole includes being fitted with the second magnet steel
Second socket, two be located at the second socket both sides and the second symmetrical auxiliary shield groove respectively, described second
Socket is located at the internal layer of first socket and parallel to first socket；Have on the iron core unit outer surface
Multiple second Flux modulation groove groups, and every one second Flux modulation groove group corresponds to a magnetic pole；Each second magnetic flux is adjusted
Groove group processed includes two respectively on the surface of the iron core unit and along the second groove being axially distributed of the iron core unit.
4. rotor according to claim 3, it is characterised in that：Described two second grooves are located at described second respectively
The inner side of the extended line of auxiliary shield groove.
5. rotor according to claim 3, it is characterised in that：Each magnetic pole also includes being fitted with the of magnet steel
Three sockets, two be located at the 3rd socket both sides and the 3rd symmetrical auxiliary shield groove, the 3rd socket respectively
Positioned at second socket internal layer and parallel to second socket.
6. rotor according to claim 5, it is characterised in that：Described two second grooves are located at the described 3rd respectively
The inner side of the extended line of auxiliary shield groove.
7. rotor according to claim 5, it is characterised in that：Described two second grooves are located at described second respectively
The inner side of the extended line of auxiliary shield groove；There are multiple 3rd Flux modulation groove groups on the iron core unit outer surface, and it is each
3rd Flux modulation groove group corresponds to a magnetic pole；Each 3rd Flux modulation groove group includes two articles respectively in the iron core
The surface of unit and along the 3rd groove being axially distributed of the iron core unit；Described two 3rd grooves are respectively positioned at described the
The inner side of the extended line of three auxiliary shield grooves.
8. rotor according to claim 6, it is characterised in that：First groove and the second groove are respectively section
For semicircular groove.
9. rotor according to claim 8, it is characterised in that：The radius in the section of second groove is more than first
The radius in the section of groove.
10. a kind of permagnetic synchronous motor, including casing and the stator in casing, it is characterised in that：The permanent magnet synchronous electric
Machine also includes rotor as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721034526.7U CN207124499U (en) | 2017-08-17 | 2017-08-17 | Rotor and permagnetic synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721034526.7U CN207124499U (en) | 2017-08-17 | 2017-08-17 | Rotor and permagnetic synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207124499U true CN207124499U (en) | 2018-03-20 |
Family
ID=61602609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721034526.7U Active CN207124499U (en) | 2017-08-17 | 2017-08-17 | Rotor and permagnetic synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207124499U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110798039A (en) * | 2019-10-28 | 2020-02-14 | 上海大郡动力控制技术有限公司 | double-V-shaped motor rotor applied to permanent magnet synchronous motor of electric automobile |
| CN112087081A (en) * | 2020-08-25 | 2020-12-15 | 合肥巨一动力系统有限公司 | Permanent magnet motor rotor structure for new energy automobile |
-
2017
- 2017-08-17 CN CN201721034526.7U patent/CN207124499U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110798039A (en) * | 2019-10-28 | 2020-02-14 | 上海大郡动力控制技术有限公司 | double-V-shaped motor rotor applied to permanent magnet synchronous motor of electric automobile |
| CN112087081A (en) * | 2020-08-25 | 2020-12-15 | 合肥巨一动力系统有限公司 | Permanent magnet motor rotor structure for new energy automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou Huichuan United Power System Co.,Ltd. Address before: 215000 52 tianedang Road, Yuexi Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: SUZHOU HUICHUAN UNITED POWER SYSTEM Co.,Ltd. |