CN208241416U - A kind of EPS permanent magnet synchronous motor with Low gullet torque - Google Patents
A kind of EPS permanent magnet synchronous motor with Low gullet torque Download PDFInfo
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- CN208241416U CN208241416U CN201820833087.4U CN201820833087U CN208241416U CN 208241416 U CN208241416 U CN 208241416U CN 201820833087 U CN201820833087 U CN 201820833087U CN 208241416 U CN208241416 U CN 208241416U
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- permanent magnet
- synchronous motor
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Abstract
The utility model discloses a kind of EPS permanent magnet synchronous motor with Low gullet torque, including stator and rotor, stator includes stator core, stator core is equipped with the centre bore for installing rotor, several stator slots are distributed with around centre bore isogonism on stator core, the stator teeth with curved end is formed between two neighboring stator slot, it is symmetrical on curved end that there are two semicircle groove or be respectively equipped with boss, stator further includes corresponding to the respectively arranged stator coil of each stator teeth, stator coil is wound around on corresponding stator teeth and draws respectively to two sides, rotor includes rotor core, rotor core is arranged along the axial direction of between multistage magnetic pole unit and adjacent two sections of magnetic pole units the setting that is staggered, magnetic pole unit includes several rotor magnetic poles being uniformly distributed in rotor core peripheral surface, it is additionally provided between rotor and stator Eccentric air gap.The utility model reduces the cogging torque of EPS motor, promotes its reliability and stability by reasonably optimizing stator and rotor sructure and parameter.
Description
Technical field
The utility model relates to a kind of EPS permanent magnet synchronous motor with Low gullet torque.
Background technique
In the city that current road conditions are complicated, vehicle is crowded, the requirement for driver becomes higher and higher, how to help
The stable turning that driver completes automobile becomes one of the critical issue for needing to solve.With the development of technology, automobile helps
Power steering system is, in traditional power-assisted steering field, to mostly use hydraulic power steering system greatly provisioned in more and more automobiles
System (HPS) and electric hydraulic power-assisted steering system (EHPS), but both systems cannot all provide sufficiently stable power-assisted and turn
Square, the requirement of comfort level and stability when being unable to satisfy driver for car steering.
In the prior art, electric boosting steering system (EPS) can provide corresponding power-assisted when wanting help, very
The energy consumption for reducing system in big degree, also improves comfort to a certain extent, but with modern tradition automobile,
The demand of the development of new-energy automobile and Intelligent unattended driving, people propose electric boosting steering system more tight
The requirement of lattice, general electric boosting steering system motor, since cogging torque is larger, to steering wheel rotation comfort and
Stationarity has a certain impact, and then influences the handling of vehicle, it is therefore desirable to which the EPS motor of Low gullet torque is grasped to be promoted
The comfort and stationarity of work.
Summary of the invention
The technical issues of the utility model solves is to provide a kind of EPS permanent magnet synchronous motor with Low gullet torque.
The technical solution of the utility model is: a kind of EPS permanent magnet synchronous motor with Low gullet torque, including stator and
Rotor, the stator include stator core, and the stator core is equipped with centre bore and installs the rotor by the centre bore,
Several stator slots are distributed with around the centre bore isogonism on the stator core, form one between the two neighboring stator slot
A stator teeth with curved end, respectively symmetrically distribution there are two semicircle groove or is respectively equipped with direction on each curved end
The boss of the centre bore protrusion, the stator further includes corresponding to the respectively arranged stator coil of each stator teeth, described fixed
Subcoil is wound around on corresponding stator teeth and draws respectively to two sides, and the rotor includes rotor core, the rotor core
The setting that is staggered is arranged along the axial direction of between multistage magnetic pole unit and adjacent two sections of magnetic pole units, and the magnetic pole unit includes uniform
Several rotor magnetic poles being distributed in the rotor core peripheral surface, are additionally provided with eccentric air gap between the rotor and stator.
Further, the radius of semicircle groove described in the utility model is 0.3mm.
Further, the center of circle of two semicircle grooves on curved end described in the utility model and the centre bore
Line angle between midpoint is 10 °.
Further, boss described in the utility model is distributed in the middle part of corresponding curved end.
Further, the projection thickness of boss described in the utility model is 0.1mm.
Further, the width of boss described in the utility model is 2mm.
Further, magnetic pole unit described in the utility model has three sections and along axial equidistant point of the rotor core
Cloth.
Further, the angle that is staggered in the utility model between adjacent two sections of magnetic pole units is 5 °.
Further, rotor magnetic pole described in the utility model is tile-shaped magnet steel.
Further, the eccentricity of rotor described in the utility model is 11.5mm.
The utility model compared with prior art the advantages of be: the semicircle groove or boss of stator teeth particular design can
Change size of gaps in rotor magnetic pole movement, so that the cogging torque generated is substantially reduced, meanwhile, rotor is using axial type point
Segment structure, the dislocation design on rotor core between adjacent two sections of magnetic pole units can reach the mesh for further decreasing cogging torque
, and due to using eccentric structure between rotor, by the reasonably optimizing to stator and rotor sructure and parameter, so that EPS is electric
The initial gullet positioning torque of machine is effectively reduced, and greatly promotes the reliability and stability of EPS motor, passes especially suitable for the modern times
Servo steering system is used in system automobile, new-energy automobile and Intelligent unattended driving.
Detailed description of the invention
The utility model is further described with reference to the accompanying drawings and embodiments:
Fig. 1 is the top view of the utility model (wherein on stator teeth above and below the structure of curved end and rotor core
The magnetic pole unit that two sections of portion is not drawn into)；
Fig. 2 is the structural schematic diagram that the stator teeth of semicircle groove is equipped in the utility model；
Fig. 3 is the structural schematic diagram that the stator teeth of boss is equipped in the utility model；
Wherein: 1, stator core；11, stator teeth；2, stator coil；3, rotor core；4, rotor magnetic pole；5, eccentric gas
Gap.
Specific embodiment
Embodiment:
A kind of specific implementation of the EPS permanent magnet synchronous motor with Low gullet torque of the utility model is shown in conjunction with attached drawing
Mode, firstly, include stator and rotor, the stator includes stator core 1, the stator core 1 be equipped with centre bore and by
The centre bore installs the rotor, surrounds the centre bore isogonism on the stator core 1 and 12 stator slots, phase is distributed with
The stator teeth 11 with curved end is formed between adjacent two stator slots.
It is respectively symmetrically distributed on each curved end there are two semicircle groove or is respectively equipped with towards centre bore protrusion
Boss is illustrated in figure 2 the first stator teeth 11 set there are two semicircle groove, and the radius of the semicircle groove is 0.3mm,
And the line angle between the center of circle of two semicircle grooves and the midpoint of the centre bore on each curved end is
10°.It is illustrated in figure 3 second of stator teeth 11 equipped with boss, the boss is distributed in the middle part of corresponding curved end, and
And the projection thickness of the boss is 0.1mm, width 2mm.
The stator further includes corresponding to the respectively arranged stator coil 2 of each stator teeth 11,2 winding of stator coil
On corresponding stator teeth 11 and respectively to two sides extraction.
The rotor includes rotor core 3, and the rotor core 3 is equally spaced along its axial direction three sections of magnetic pole units, phase
It is staggered setting between adjacent two sections of magnetic pole units and the angle that is staggered is 5 °, every section of magnetic pole unit includes being uniformly distributed in institute
Eight rotor magnetic poles 4 in 3 peripheral surface of rotor core are stated, the rotor magnetic pole 4 is tile-shaped magnet steel.
In addition, being additionally provided with eccentric air gap 5 between the rotor and stator, and the eccentricity of the rotor is 11.5mm.
In the present embodiment, by the way that semicircle groove or boss are arranged on the curved end of stator teeth 11, so as to
Rotor magnetic pole 4 changes size of gaps when rotating, so that the cogging torque generated is substantially reduced, meanwhile, rotor is using axial type point
Segment structure, the dislocation design on rotor core 3 between adjacent two sections of magnetic pole units, which can reach, further decreases cogging torque
Purpose, and due to using eccentric structure between rotor, cooperate the reasonably optimizing to stator and rotor sructure and parameter, so that EPS
The initial gullet positioning torque of motor is effectively reduced, and the reliability and stability of EPS motor is greatly promoted, especially suitable for the modern times
Servo steering system is used in orthodox car, new-energy automobile and Intelligent unattended driving.
Certainly the above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with this
The people of technology can understand the content of the utility model and implement accordingly, and the protection model of the utility model can not be limited with this
It encloses.Any modifications made in accordance with the spirit of the main technical solutions of the utility model should all cover the guarantor in the utility model
Within the scope of shield.
Claims (10)
1. a kind of EPS permanent magnet synchronous motor with Low gullet torque, including stator and rotor, it is characterised in that: the stator
Including stator core (1), the stator core (1) is equipped with centre bore and installs the rotor by the centre bore, described fixed
Several stator slots are distributed with around the centre bore isogonism on sub- iron core (1), form one between the two neighboring stator slot
Stator teeth (11) with curved end, respectively symmetrically distribution there are two semicircle groove or is respectively equipped with court on each curved end
The boss protruded to the centre bore, the stator further include corresponding to each stator teeth (11) respectively arranged stator coil
(2), the stator coil (2) is wound around on corresponding stator teeth (11) and draws respectively to two sides, and the rotor includes rotor
Iron core (3), the rotor core (3) are arranged along the axial direction of to be staggered between multistage magnetic pole unit and adjacent two sections of magnetic pole units and set
It sets, the magnetic pole unit includes several rotor magnetic poles (4) being uniformly distributed in the rotor core (3) peripheral surface, described
Eccentric air gap (5) are additionally provided between rotor and stator.
2. a kind of EPS permanent magnet synchronous motor with Low gullet torque according to claim 1, it is characterised in that: described
The radius of semicircle groove is 0.3mm.
3. a kind of EPS permanent magnet synchronous motor with Low gullet torque according to claim 1, it is characterised in that: described
The line angle between the center of circle of two semicircle grooves and the midpoint of the centre bore on curved end is 10 °.
4. a kind of EPS permanent magnet synchronous motor with Low gullet torque according to claim 1, it is characterised in that: described
Boss is distributed in the middle part of corresponding curved end.
5. a kind of EPS permanent magnet synchronous motor with Low gullet torque according to claim 1, it is characterised in that: described
The projection thickness of boss is 0.1mm.
6. a kind of EPS permanent magnet synchronous motor with Low gullet torque according to claim 1, it is characterised in that: described
The width of boss is 2mm.
7. a kind of EPS permanent magnet synchronous motor with Low gullet torque according to claim 1, it is characterised in that: described
Magnetic pole unit has three sections and is equally spaced along the axial direction of the rotor core (3).
8. a kind of EPS permanent magnet synchronous motor with Low gullet torque according to claim 1, it is characterised in that: adjacent
The angle that is staggered between two sections of magnetic pole units is 5 °.
9. a kind of EPS permanent magnet synchronous motor with Low gullet torque according to claim 1, it is characterised in that: described
Rotor magnetic pole (4) is tile-shaped magnet steel.
10. a kind of EPS permanent magnet synchronous motor with Low gullet torque according to claim 1, it is characterised in that: described
The eccentricity of rotor is 11.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820833087.4U CN208241416U (en) | 2018-05-31 | 2018-05-31 | A kind of EPS permanent magnet synchronous motor with Low gullet torque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820833087.4U CN208241416U (en) | 2018-05-31 | 2018-05-31 | A kind of EPS permanent magnet synchronous motor with Low gullet torque |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208241416U true CN208241416U (en) | 2018-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820833087.4U Active CN208241416U (en) | 2018-05-31 | 2018-05-31 | A kind of EPS permanent magnet synchronous motor with Low gullet torque |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208241416U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111293799A (en) * | 2020-02-27 | 2020-06-16 | 南京奥特佳新能源科技有限公司 | Permanent magnet motor with optimized back electromotive force sine waveform and stator thereof |
-
2018
- 2018-05-31 CN CN201820833087.4U patent/CN208241416U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111293799A (en) * | 2020-02-27 | 2020-06-16 | 南京奥特佳新能源科技有限公司 | Permanent magnet motor with optimized back electromotive force sine waveform and stator thereof |
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