CN219477687U - Monopole motor with unequally-spaced auxiliary tooth structure - Google Patents
Monopole motor with unequally-spaced auxiliary tooth structure Download PDFInfo
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- CN219477687U CN219477687U CN202320292023.9U CN202320292023U CN219477687U CN 219477687 U CN219477687 U CN 219477687U CN 202320292023 U CN202320292023 U CN 202320292023U CN 219477687 U CN219477687 U CN 219477687U
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- stator
- tooth
- rotor core
- rotor
- teeth
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- 230000005404 monopole Effects 0.000 title claims abstract description 22
- 238000004804 winding Methods 0.000 claims abstract description 14
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 5
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 5
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 5
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000035699 permeability Effects 0.000 description 8
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model relates to a monopole motor with an unequally-spaced auxiliary tooth structure, which comprises a stator and a rotor, wherein an air gap exists between the stator and the rotor; the stator comprises a stator yoke and a plurality of stator tooth structures; adjacent stator tooth structures are distributed at intervals of a first distance; each stator tooth structure comprises a stator main tooth and two stator auxiliary teeth, wherein the stator main tooth is split into two stator auxiliary teeth at the air gap side; the distance between the two stator auxiliary teeth is a second distance; the second distance is different from the first distance; a stator slot is formed in a gap between two adjacent stator main teeth, and an armature winding is arranged in the stator slot; in the rotor structure, a monopole permanent magnet is arranged between a first rotor core and a second rotor core; the first rotor core and the second rotor core are of salient pole structures, each salient pole structure comprises a plurality of salient pole teeth, and the first rotor core and the second rotor core are staggered by half of a tooth pitch in the radial direction. The utility model can increase specific magnetic conduction harmonic wave in the air gap, so that back electromotive force and torque are improved.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a monopole motor with an unequally-spaced auxiliary tooth structure.
Background
The motor is used as an important electromagnetic device for electromechanical energy conversion, is widely applied to various fields of industry and agriculture, traffic, household appliances, national defense and the like, and plays an important role in the development of national economy and society. According to different use scenes, motors with different excitation modes and different topological structures are required to be selected.
In the prior art, a stator core of a permanent magnet synchronous motor usually adopts a half slot or an open slot, teeth are straight teeth with equal tooth widths, such as Chinese patent application number 201320732113.1, and a high-slot full-rate high-performance open slot straight tooth permanent magnet synchronous motor is disclosed.
Therefore, it is necessary to design a monopole motor with an unequally spaced auxiliary tooth structure, increase the work ratio flux guide harmonic in the air gap, and improve the counter potential and torque of the motor.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a monopole motor with an unequally spaced auxiliary tooth structure, so as to solve the technical problem that the counter electromotive force and torque cannot meet the use requirement in the prior art due to the fact that the air gap is smaller than the magnetic conduction harmonic wave.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
the utility model provides a monopole motor with an unequally-spaced auxiliary tooth structure, which comprises a stator and a rotor, wherein an air gap exists between the stator and the rotor;
the stator includes a stator yoke and a plurality of stator tooth structures; adjacent two stator tooth structures are distributed at intervals of a first distance; each stator tooth structure comprises a stator main tooth and two stator auxiliary teeth, wherein the stator main tooth is connected with the stator yoke and split into two stator auxiliary teeth at the air gap side; the distance between the two stator auxiliary teeth is a second distance; the second distance is different from the first distance; a stator slot is formed in a gap between two adjacent stator main teeth, and an armature winding is arranged in the stator slot;
the rotor comprises a first rotor core, a second rotor core and a monopole permanent magnet; the monopole permanent magnet is arranged between the first rotor core and the second rotor core; the first rotor core and the second rotor core are of salient pole structures, each salient pole structure comprises a plurality of salient pole teeth, and the first rotor core and the second rotor core are staggered by half of a tooth pitch in the radial direction.
Further, in the salient pole tooth structures of the first rotor core and the second rotor core, the salient pole teeth are uniformly and equidistantly distributed along the circumferential direction; the iron core can be effectively utilized, and specific harmonic waves can be reduced or eliminated.
Further, the stator rotation direction is the same as the rotor rotation direction.
Further, the armature winding is a double three-phase winding. The double three-phase windings have better magnetic field waveform, starting performance and lower stray loss, reduce the resistance of the stator, and reduce the temperature rise of the motor windings in the use process.
Further, the rotor is formed by laminating a plurality of silicon steel sheets. The resistance in the iron core can be increased through lamination of the silicon steel sheets, the eddy current in the iron core is reduced, and the magnetic permeability efficiency is improved.
Further, the monopole permanent magnet is made of neodymium-iron-boron or samarium-cobalt materials. The permanent magnet with single pole is made of neodymium-iron-boron or samarium-cobalt permanent magnet material, which can prolong the service life of the permanent magnet and has the characteristics of high temperature resistance and strong magnetism.
Further, the thickness of the salient pole teeth is greater than the thickness of the auxiliary teeth.
Further, the thickness of the main teeth is greater than the thickness of the auxiliary teeth.
Compared with the prior art, the utility model has the beneficial effects that: in the stator tooth structure, the stator main tooth is split into two stator auxiliary teeth at the air gap side, so that the magnetic field can be modulated, and the magnetic field coupling of the stator and the rotor is realized; the distance between the stator structures is different from the distance between the auxiliary teeth, the working specific magnetic permeability harmonic wave in the air gap can be increased, the counter electromotive force and the torque are greatly improved, and the technical problem that the counter electromotive force and the torque cannot meet the use requirement due to the fact that the specific magnetic permeability harmonic wave in the air gap is small in the prior art is solved.
Drawings
FIG. 1 is a schematic diagram of an overall structure of an embodiment of a monopole motor with non-equidistant auxiliary teeth structure according to the present utility model;
FIG. 2 is a cross-sectional view of an embodiment of a monopole motor with non-equidistant auxiliary tooth structure according to the present utility model;
fig. 3 is a schematic diagram showing the spacing between the main teeth and the auxiliary teeth of a stator in a monopole motor with an unequal-pitch auxiliary tooth structure according to an embodiment of the present utility model.
Detailed Description
Preferred embodiments of the present utility model will now be described in detail with reference to the accompanying drawings, which form a part hereof, and together with the description serve to explain the principles of the utility model, and are not intended to limit the scope of the utility model.
In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The utility model provides a monopole motor with an unequally-spaced auxiliary tooth structure, referring to fig. 1, fig. 1 is a structural cross-sectional view of the monopole motor with the unequally-spaced auxiliary tooth structure, which comprises a stator and a rotor, wherein an air gap exists between the stator and the rotor;
the stator comprises a stator yoke 1 and a plurality of stator tooth structures; adjacent two stator tooth structures are distributed at intervals of a first distance; each stator tooth structure comprises a stator main tooth 2 and two stator auxiliary teeth 3, wherein the stator main tooth 2 is connected with the stator yoke 1 and is split into two stator auxiliary teeth 3 at the air gap side, and the distance between the two stator auxiliary teeth 3 is a second distance; the second distance is different from the first distance; a stator slot 7 is formed in a gap between two adjacent stator main teeth 2, and an armature winding is arranged in the stator slot 7;
the rotor comprises a first rotor core 4, a second rotor core 5 and a unipolar permanent magnet 6; the monopole permanent magnet 6 is arranged between the first rotor core 4 and the second rotor core 5; the first rotor core 4 and the second rotor core 5 are of salient pole structures, each salient pole structure comprises a plurality of salient pole teeth 8, and the first rotor core 4 and the second rotor core 5 are staggered by half of a tooth pitch in the radial direction.
According to the monopole motor with the unequal-distance auxiliary tooth structure, in the stator tooth structure, the stator main tooth is split into two stator auxiliary teeth at the air gap side, so that a magnetic field can be modulated, and magnetic field coupling of a stator and a rotor is realized; the distance between the stator structures is different from the distance between the auxiliary teeth, the working specific magnetic permeability harmonic wave in the air gap can be increased, the counter electromotive force and the torque are greatly improved, and the technical problem that the counter electromotive force and the torque cannot meet the use requirement due to the fact that the specific magnetic permeability harmonic wave in the air gap is small in the prior art is solved.
As a specific example, as shown in FIG. 2, FIG. 2 showsThe distance relationship between the stator main teeth 2 and the stator auxiliary teeth 3 is schematically shown. The distance between the two auxiliary teeth 3 split by each stator main tooth 2 is a second distance W 1 The method comprises the steps of carrying out a first treatment on the surface of the The main teeth 2 and the auxiliary teeth 3 form stator tooth structures, and the distance between two adjacent stator tooth structures is a first distance W 2 Wherein W is 1 And W is 2 The working ratio flux guide harmonic wave in the air gap can be increased through the structure, and the counter potential and the torque are greatly improved.
In order to effectively utilize the iron core, as a preferred embodiment, the plurality of salient pole teeth 8 are uniformly and equidistantly distributed in the circumferential direction in the salient pole tooth structure of the first rotor iron core 4 and the second rotor iron core 5. And simultaneously, the purpose of reducing or eliminating specific harmonic waves is achieved. In the salient pole structure of the rotor, the first rotor core 4 and the second rotor core 5 are staggered by half a tooth pitch, so that rotor tooth modulation magnetic fields received at the left side and the right side are kept in phase.
As a preferred embodiment, the stator rotation direction is the same as the rotor rotation direction.
As a preferred embodiment, the armature winding is a double three-phase winding. The double three-phase windings have better magnetic field waveform, starting performance and lower stray loss, reduce the resistance of the stator, and reduce the temperature rise of the motor windings in the use process.
As a preferred embodiment, the rotor is laminated from a plurality of silicon steel sheets. The resistance in the iron core can be increased through lamination of the silicon steel sheets, the eddy current in the iron core is reduced, and the magnetic permeability efficiency is improved.
As a preferred embodiment, the monopole permanent magnet 6 is made of neodymium-iron-boron or samarium-cobalt material. The permanent magnet with single pole is made of neodymium-iron-boron or samarium-cobalt permanent magnet material, which can prolong the service life of the permanent magnet and has the characteristics of high temperature resistance and strong magnetism.
As a preferred embodiment, the thickness of the salient pole teeth 8 is greater than the thickness of the auxiliary teeth 3.
The thickness of the main teeth 2 is greater than the thickness of the auxiliary teeth 3 as a preferred embodiment.
The utility model provides a monopole motor with an unequally-spaced auxiliary tooth structure, in the stator tooth structure provided by the utility model, a stator main tooth is split into two stator auxiliary teeth at an air gap side, so that a magnetic field can be modulated, and the magnetic field coupling of a stator and a rotor is realized; the distance between the stator structures is different from the distance between the auxiliary teeth, the working specific magnetic permeability harmonic wave in the air gap can be increased, the counter electromotive force and the torque are greatly improved, and the technical problem that the counter electromotive force and the torque cannot meet the use requirement due to the fact that the specific magnetic permeability harmonic wave in the air gap is small in the prior art is solved.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.
Claims (8)
1. The monopole motor with the non-equidistant auxiliary tooth structure is characterized by comprising a stator and a rotor, wherein an air gap exists between the stator and the rotor;
the stator comprises a stator yoke (1) and a plurality of stator tooth structures; adjacent two stator tooth structures are distributed at intervals of a first distance; each stator tooth structure comprises a stator main tooth (2) and two stator auxiliary teeth (3), wherein the stator main tooth (2) is connected with the stator yoke (1) and is split into two stator auxiliary teeth (3) at the air gap side, and the distance between the two stator auxiliary teeth (3) is a second distance; the second distance is different from the first distance; a stator slot (7) is formed in a gap between two adjacent stator main teeth (2), and an armature winding is arranged in the stator slot (7);
the rotor comprises a first rotor core (4), a second rotor core (5) and a unipolar permanent magnet (6); the monopole permanent magnet (6) is arranged between the first rotor core (4) and the second rotor core (5); the first rotor core (4) and the second rotor core (5) are of salient pole structures, each salient pole structure comprises a plurality of salient pole teeth (8), and the first rotor core (4) and the second rotor core (5) are staggered by half of a tooth pitch in the radial direction.
2. The single-pole motor with non-equidistant auxiliary tooth structure as claimed in claim 1, wherein the plurality of salient pole teeth (8) are uniformly equidistantly distributed in the circumferential direction in the salient pole tooth structure of the first rotor core (4) and the second rotor core (5).
3. The monopolar motor with non-equidistant auxiliary tooth structure as defined in claim 1, wherein said stator rotation direction is the same as the rotor rotation direction.
4. The unipolar motor of claim 1, wherein the armature winding is a double three-phase winding.
5. The monopolar motor with non-equidistant auxiliary tooth structure of claim 1 wherein said rotor is laminated from a plurality of silicon steel sheets.
6. Monopolar motor with non-equidistant auxiliary tooth structure according to claim 1, characterized in that the monopolar permanent magnets (6) are made of neodymium-iron-boron or samarium-cobalt material.
7. Monopolar motor with non-equidistant auxiliary tooth structure according to claim 1, characterized in that the thickness of the salient pole teeth (8) is greater than the thickness of the auxiliary teeth (3).
8. Monopolar motor with non-equidistant auxiliary tooth structure according to claim 1, characterized in that the thickness of the main tooth (2) is greater than the thickness of the auxiliary tooth (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320292023.9U CN219477687U (en) | 2023-02-23 | 2023-02-23 | Monopole motor with unequally-spaced auxiliary tooth structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320292023.9U CN219477687U (en) | 2023-02-23 | 2023-02-23 | Monopole motor with unequally-spaced auxiliary tooth structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219477687U true CN219477687U (en) | 2023-08-04 |
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ID=87463246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320292023.9U Active CN219477687U (en) | 2023-02-23 | 2023-02-23 | Monopole motor with unequally-spaced auxiliary tooth structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219477687U (en) |
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2023
- 2023-02-23 CN CN202320292023.9U patent/CN219477687U/en active Active
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