CN202435162U - Permanent-magnet motor rotor - Google Patents
Permanent-magnet motor rotor Download PDFInfo
- Publication number
- CN202435162U CN202435162U CN2011203964458U CN201120396445U CN202435162U CN 202435162 U CN202435162 U CN 202435162U CN 2011203964458 U CN2011203964458 U CN 2011203964458U CN 201120396445 U CN201120396445 U CN 201120396445U CN 202435162 U CN202435162 U CN 202435162U
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- Prior art keywords
- permanent magnet
- permanent
- iron core
- magnets
- magnet motor
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model relates to a permanent-magnet motor rotor and especially to a rotor that is suitable for a high-power permanent-magnet motor. The permanent-magnet motor rotor includes an iron core. Permanent magnet grooves are arranged in magnets of the iron core. Permanent magnets are embedded in the permanent magnet grooves. An external profile of each of the magnets in the iron core is in an arc shape and grooves are arranged between neighboring magnets. According to the utility model, by designing the external profile of each of the magnets in the iron core in the arc shape, an air gap magnetic field having comparatively good wave shapes is obtained. At the same time, a tooth socket torque is reduced, thereby simplifying techniques and improving the reliability of the motor.
Description
Technical field
The utility model relates to a kind of permanent magnet machine rotor, especially a kind of rotor of suitable high-power permanent magnet generator.
Background technology
Adopt the magneto of open slot stator, because of width of rebate is big, slot effect is stronger; Can produce bigger cogging torque, the magneto cogging torque is an important indicator of weighing the magneto performance, theoretically; Cogging torque is more little, and the motor operation is stable more, and vibration noise is more little.In high-power permanent magnet motor; The motor cogging torque is very big, the permanent-magnetic wind driven generator of MW class especially, and its cogging torque can reach more than the 1000N; Perhaps even higher; This stability during to the starting performance of motor and load running is very unfavorable, and therefore, reducing cogging torque is one of key technology of Design of PM Motor.
Adopt methods such as skewed slot, fractional-slot also to reduce cogging torque at present mostly; But adopt these methods to bring very big difficulty to manufacturing process; The reliability of motor is reduced, and especially for the permanent-magnetic wind driven generator of MW class, technological problems is especially remarkable.
Simultaneously, the harmonic component in the magneto air-gap field can make the iron loss of motor increase, and back-emf percent harmonic distortion (THD) increases, thereby causes that the magneto temperature rise is too high, efficient reduces, power generation performance descends.
Summary of the invention
The purpose of the utility model is to provide a kind of rotor of magneto, effectively reduces cogging torque, the air-gap field harmonic component of magneto, improves motor properties simplified manufacturing technique simultaneously, improves the reliability of motor.
The technical scheme of the utility model is that a kind of permanent magnet machine rotor comprises iron core; In each magnetic pole unshakable in one's determination permanent magnet trough is arranged; Setting-in permanent magnet in the permanent magnet trough is characterized in that the exterior contour of each magnetic pole is to be provided with groove between arc and the adjacent pole in the iron core.
Said permanent magnet trough is a linear pattern.
Be provided with at a distance from magnetic bridge between each permanent magnet and the outline unshakable in one's determination in the said iron core near groove.
Be provided with reinforcement in the said permanent magnet trough.
Under each magnetic pole; The rotor core exterior contour is designed to arcuation; Groove of iron core design between the adjacent pole makes the air gap between rotor and the stator become non-homogeneous type, and is as shown in Figure 2; Thereby improve the waveform of air-gap field, reach the purpose that reduces cogging torque and air-gap field harmonic component.
Know that by above the utility model is designed to the air-gap field that arcuation obtains to have better waveform as a kind of permanent magnet machine rotor through the exterior contour unshakable in one's determination with each magnetic pole, reduces cogging torque simultaneously, thereby simplify technology, improve the motor reliability.
Description of drawings
Fig. 1 is the structure chart of a kind of embodiment of the utility model;
Fig. 2 is rotor and the magnetic structure figure of stator among Fig. 1;
In the drawings:
The 1-stator, the 2-rotor, the 3-magnetic line of force,
The 4-reinforcement, the 5-permanent magnet, the 6-iron-core lamination,
7-cylindrical unshakable in one's determination, the 8-groove, 9-is at a distance from magnetic bridge.
Embodiment
As shown in Figure 1, a kind of permanent magnet machine rotor comprises iron core, in each magnetic pole unshakable in one's determination permanent magnet trough is arranged, setting-in permanent magnet 5 in the permanent magnet trough, and the exterior contour 7 of each magnetic pole is for being provided with groove 8 between arc and the adjacent pole in the iron core.
Permanent magnet trough is a linear pattern, is provided with at a distance from magnetic bridge 9 between interior each permanent magnet 5 unshakable in one's determination and the outline unshakable in one's determination 7 near groove 8, is provided with reinforcement 4 in the permanent magnet trough.
Claims (4)
1. a permanent magnet machine rotor comprises iron core, in each magnetic pole unshakable in one's determination permanent magnet trough is arranged, and setting-in permanent magnet (5) in the permanent magnet trough is characterized in that, the exterior contour of each magnetic pole (7) is for being provided with groove (8) between arc and the adjacent pole in the iron core.
2. according to the said a kind of permanent magnet machine rotor of claim 1, it is characterized in that said permanent magnet trough is a linear pattern.
3. according to the said a kind of permanent magnet machine rotor of claim 1, it is characterized in that, be provided with at a distance from magnetic bridge (9) between each permanent magnet (5) and the outline unshakable in one's determination (7) in the said iron core near groove (8).
4. according to the said a kind of permanent magnet machine rotor of claim 1, it is characterized in that, be provided with reinforcement (4) in the said permanent magnet trough.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203964458U CN202435162U (en) | 2011-10-18 | 2011-10-18 | Permanent-magnet motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203964458U CN202435162U (en) | 2011-10-18 | 2011-10-18 | Permanent-magnet motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202435162U true CN202435162U (en) | 2012-09-12 |
Family
ID=46784571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203964458U Expired - Fee Related CN202435162U (en) | 2011-10-18 | 2011-10-18 | Permanent-magnet motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202435162U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467333A (en) * | 2014-12-01 | 2015-03-25 | 哈尔滨工业大学 | Rotor excitation multi-phase reluctance motor and control method thereof |
| WO2016015289A1 (en) * | 2014-07-31 | 2016-02-04 | 广东威灵电机制造有限公司 | Motor rotor and motor having same |
| CN108141072A (en) * | 2015-09-30 | 2018-06-08 | 法拉第未来公司 | For the interior permanent magnets machine of motor-driven electric vehicle |
-
2011
- 2011-10-18 CN CN2011203964458U patent/CN202435162U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016015289A1 (en) * | 2014-07-31 | 2016-02-04 | 广东威灵电机制造有限公司 | Motor rotor and motor having same |
| US10411536B2 (en) | 2014-07-31 | 2019-09-10 | Guangdong Meizhi Compressor Co., Ltd. | Motor rotor and motor having same |
| CN104467333A (en) * | 2014-12-01 | 2015-03-25 | 哈尔滨工业大学 | Rotor excitation multi-phase reluctance motor and control method thereof |
| CN104467333B (en) * | 2014-12-01 | 2017-04-12 | 哈尔滨工业大学 | Rotor excitation multi-phase reluctance motor and control method thereof |
| CN108141072A (en) * | 2015-09-30 | 2018-06-08 | 法拉第未来公司 | For the interior permanent magnets machine of motor-driven electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20201018 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |