CN115967200A - Magnetic circuit structure for reducing torque pulsation of permanent magnet motor - Google Patents
Magnetic circuit structure for reducing torque pulsation of permanent magnet motor Download PDFInfo
- Publication number
- CN115967200A CN115967200A CN202211654261.6A CN202211654261A CN115967200A CN 115967200 A CN115967200 A CN 115967200A CN 202211654261 A CN202211654261 A CN 202211654261A CN 115967200 A CN115967200 A CN 115967200A
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- Prior art keywords
- stator
- magnetic
- permanent magnet
- circuit structure
- motor
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- 230000010349 pulsation Effects 0.000 title claims abstract description 14
- 230000004888 barrier function Effects 0.000 claims abstract description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 6
- 238000010030 laminating Methods 0.000 abstract description 4
- 238000004080 punching Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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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 invention discloses a magnetic circuit structure for reducing torque pulsation of a permanent magnet motor, which belongs to the field of motors and comprises stator teeth and stator magnetic barriers; the stator magnetic barrier is arranged at the bottom of the stator tooth. The magnetic circuit structure for reducing the torque pulsation of the permanent magnet motor disclosed by the invention has the advantages that the arc-shaped magnetic barrier grooves are punched on the innermost part of each stator tooth part, the iron core laminating difficulty is reduced, the cost is reduced, meanwhile, the magnetic circuit structure of the motor stator is changed, uneven breath is formed, the magnetic tension between the stator and the rotor of the permanent magnet motor can be greatly reduced, the aim of reducing the torque pulsation of the motor is fulfilled through the eccentricity of the stator, the stability of the motor is improved, and the operation is simple.
Description
Technical Field
The invention relates to a motor, in particular to a magnetic circuit structure for reducing torque pulsation of a permanent magnet motor.
Background
The permanent magnet motor is developed rapidly in an energy-saving large environment, and with the development of the permanent magnet motor, the rotor of the permanent magnet motor is provided with a magnetic field generated by a permanent magnet and is coupled with a magnetic field generated by a stator, so that more harmonic waves exist.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to solve the technical problem of providing a magnetic circuit structure for reducing the torque pulsation of a permanent magnet motor, wherein an arc-shaped magnetic barrier groove is punched on the innermost part of each stator tooth part, so that the iron core laminating difficulty is reduced, the cost is reduced, meanwhile, the magnetic circuit structure of the motor stator is changed, uneven breath is formed, the magnetic tension between a stator and a rotor of the permanent magnet motor can be greatly reduced, the aim of reducing the torque pulsation of the motor is fulfilled through the eccentricity of the stator, the stability of the motor is improved, and the operation is simple.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a magnetic circuit structure for reducing torque pulsation of a permanent magnet motor, which comprises stator teeth and a stator magnetic barrier; and the stator magnetic barriers are arranged at the bottoms of the stator teeth.
The further technical scheme of the invention is that the stator magnetic barrier comprises a plurality of magnetic barrier grooves; the magnetic barrier grooves are arranged at the bottoms of the stator teeth.
The invention has the further technical scheme that the magnetic barrier grooves are all formed in a punching mode.
The further technical scheme of the invention is that the magnetic barrier grooves are all arc-shaped.
The beneficial effects of the invention are as follows:
according to the magnetic circuit structure for reducing the torque pulsation of the permanent magnet motor, the arc-shaped magnetic barrier groove is punched on the innermost part of each stator tooth part, so that the iron core laminating difficulty is reduced, the cost is reduced, meanwhile, the magnetic circuit structure of the motor stator is changed, uneven breath is formed, the magnetic tension between the stator and the rotor of the permanent magnet motor can be greatly reduced, the aim of reducing the torque pulsation of the motor is achieved through the eccentricity of the stator, the stability of the motor is improved, and the operation is simple.
Drawings
Fig. 1 is a schematic diagram of a magnetic circuit structure for reducing torque ripple of a permanent magnet motor according to the present invention.
In the figure:
stator teeth 1; a stator magnetic barrier 2; a plurality of magnetic barrier grooves 3.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and operate, and therefore the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and it is possible for one of ordinary skill in the art to understand the specific meaning of the above terms according to the specific situation.
The first embodiment is as follows:
the present invention is described with reference to fig. 1, and the present invention relates to a motor, and more specifically, to a magnetic circuit structure for reducing torque ripple of a permanent magnet motor, which includes stator teeth 1 and stator magnetic barriers 2; stator tooth 1 bottom is provided with stator magnetic barrier 2, through to curved magnetic barrier groove 3 of innermost portion stamping process of every stator tooth portion, has reduced the iron core and has folded the degree of difficulty, the cost is reduced, changes motor stator magnetic structure simultaneously, has formed inhomogeneous breath, but the magnetic pull force between greatly reduced permanent-magnet machine's stator and rotor through stator off-centre, reaches the purpose that makes the torque ripple of motor reduce, improves motor stability, easy operation.
The second embodiment is as follows:
the present embodiment is described below with reference to fig. 1, and the present embodiment further describes the first embodiment, in which the stator magnetic barrier 2 includes a plurality of magnetic barrier grooves 3; a plurality of magnetic barrier grooves 3 are formed in the bottom of the stator teeth 1, the iron core laminating difficulty is reduced, the cost is reduced, the purpose of reducing the torque pulsation of the motor is achieved through stator eccentricity, and the stability of the motor is improved.
The third concrete implementation mode:
in the first embodiment, the present embodiment will be described with reference to fig. 1, and the plurality of magnetic barrier grooves 3 are all formed by press forming, which makes the operation simple.
The fourth concrete implementation mode:
the present embodiment will be described below with reference to fig. 1, and the present embodiment further describes the first embodiment in which the plurality of magnetic barrier grooves 3 are all arc-shaped.
The working principle is as follows: stator tooth 1 bottom is provided with stator magnetic barrier 2, and through to curved magnetic barrier groove 3 of the punching press processing of the innermost portion of every stator tooth portion, reduced the iron core and folded the degree of difficulty, the cost is reduced changes motor stator magnetic structure simultaneously, has formed inhomogeneous breath, but the magnetic pulling force between the stator and the rotor of greatly reduced permanent-magnet machine, through stator off-centre, reaches the purpose that makes the torque pulsation of motor reduce, improves motor stability, and the operation is simple.
While the invention has been described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not intended to be limited to the specific embodiments disclosed herein, but other embodiments falling within the scope of the appended claims are intended to be within the scope of the present invention.
Claims (4)
1. A magnetic circuit structure for reducing torque pulsation of a permanent magnet motor is characterized by comprising stator teeth and stator magnetic barriers;
and the stator magnetic barriers are arranged at the bottoms of the stator teeth.
2. The magnetic circuit structure for reducing torque ripple of a permanent magnet motor according to claim 1, wherein:
the stator magnetic barrier comprises a plurality of magnetic barrier grooves;
the magnetic barrier grooves are arranged at the bottoms of the stator teeth.
3. The magnetic circuit structure for reducing torque ripple of a permanent magnet motor according to claim 2, wherein:
and the magnetic barrier grooves are all formed in a punch way.
4. A magnetic circuit structure for reducing torque ripple of a permanent magnet motor according to claim 2 or 3, wherein:
the magnetic barrier grooves are all arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211654261.6A CN115967200A (en) | 2022-12-22 | 2022-12-22 | Magnetic circuit structure for reducing torque pulsation of permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211654261.6A CN115967200A (en) | 2022-12-22 | 2022-12-22 | Magnetic circuit structure for reducing torque pulsation of permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115967200A true CN115967200A (en) | 2023-04-14 |
Family
ID=87354363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211654261.6A Pending CN115967200A (en) | 2022-12-22 | 2022-12-22 | Magnetic circuit structure for reducing torque pulsation of permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115967200A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330231A (en) * | 2007-06-19 | 2008-12-24 | 上海海立（集团）股份有限公司 | Permanent magnet motor stator and rotor for compressor |
| CN202206207U (en) * | 2011-08-30 | 2012-04-25 | 嘉善东菱电子科技有限公司 | Assembled eccentric stator punching sheet for permanent magnet servo motor |
| US20120139372A1 (en) * | 2009-11-24 | 2012-06-07 | Mitsubishi Electric Corporation | Permanent magnet rotating electrical machine and electric power steering apparatus using the same |
| CN215580572U (en) * | 2021-05-18 | 2022-01-18 | 南京森宇机电科技有限公司 | Low-noise high-strength permanent magnet motor stator structure |
-
2022
- 2022-12-22 CN CN202211654261.6A patent/CN115967200A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330231A (en) * | 2007-06-19 | 2008-12-24 | 上海海立（集团）股份有限公司 | Permanent magnet motor stator and rotor for compressor |
| US20120139372A1 (en) * | 2009-11-24 | 2012-06-07 | Mitsubishi Electric Corporation | Permanent magnet rotating electrical machine and electric power steering apparatus using the same |
| CN202206207U (en) * | 2011-08-30 | 2012-04-25 | 嘉善东菱电子科技有限公司 | Assembled eccentric stator punching sheet for permanent magnet servo motor |
| CN215580572U (en) * | 2021-05-18 | 2022-01-18 | 南京森宇机电科技有限公司 | Low-noise high-strength permanent magnet motor stator structure |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20230414 |
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| RJ01 | Rejection of invention patent application after publication |