CN203014513U - Permanent magnet generator stator capable of reducing cogging torque - Google Patents
Permanent magnet generator stator capable of reducing cogging torque Download PDFInfo
- Publication number
- CN203014513U CN203014513U CN 201220525135 CN201220525135U CN203014513U CN 203014513 U CN203014513 U CN 203014513U CN 201220525135 CN201220525135 CN 201220525135 CN 201220525135 U CN201220525135 U CN 201220525135U CN 203014513 U CN203014513 U CN 203014513U
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- CN
- China
- Prior art keywords
- generator
- permanent magnet
- stator
- cogging torque
- magnet generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a permanent magnet generator stator capable of reducing a cogging torque, belongs to the generator technology field, and particularly relates to a permanent magnet generator stator capable of reducing the cogging torque. The purpose of the utility model is to provide a novel stator piece capable of reducing a cogging torque of a permanent magnet generator and improving generator operation stability and mechanical loss. Tooth parts of the generator stator are provided with grooves which are not embedded with lines. Each tooth part of the stator is provided with a groove. Each stator tooth part is provided with a groove, the cogging torque frequency of the generator can be increased to two times, the torque amplitude of the generator is reduced by 50% at the same time, thus the torque ripple, vibration and noise of the generator are greatly reduced, and at the same time the permanent magnet generator stator has the advantages of simple process, low cost and suitability for wide application.
Description
Technical field
This practicality belongs to technical field of generators, is specifically related to a kind of permanent magnet generator stator sheet that reduces cogging torque.
Background technology
Permanent magnet generator has been widely used in the frontiers such as wind-powered electricity generation, water power, body-building equipment power generation as a kind of emerging generator, cogging torque is as one of of paramount importance parameter of permanent magnet generator, and the application in these fields is producing important impact on the permanent magnet generator product.Cogging torque is because the physical structure of permanent magnet generator itself is caused, a side of dress permanent magnet and a side of fluting in rotor, there is interactional tangential force, the torque that this active force produces, have and make teeth groove and permanent magnet pole keep the trend of alignment, even there is no electric current in stator winding, this torque still exists.Cogging torque is crossed conference makes generator produce torque ripple, vibration and noise, affects the normal use of generator.
The method that tradition reduces cogging torque has a lot, modes such as skewed-rotor, rotor eccentricity, but mostly there are difficulty in these modes or higher cost are arranged on technique, and this makes these methods to be widely used.
The utility model content
The purpose of this utility model is can reduce the permanent magnet generator cogging torque in order to provide a kind of, improves the Novel stator sheet of generator operation stability and mechanical loss.
The technical solution of the utility model is as follows:
Described stator piece of generator tooth section is provided with groove.
Described groove is rule groove not.
Described stator piece tooth section is provided with a groove.
Beneficial effect:
The utility model is introduced a kind of novel stator piece structure, position in stator piece tooth section arranges some not auxiliary tanks of rule, ignore because the conversion of magnetostatic energy in the iron core of permanent magnet can be similar to respect to air gap, most energy changing occur in the inter-air space of pole change in out-of-date stator slot.Stator piece tooth section groove can make generator increase some additional inter-air spaces, makes the magnetostatic energy of generator play a little variation when rotor.Each stator tooth is opened a groove, can make the cogging torque frequency of generator increase to 2 times, make simultaneously the torque amplitude of generator reduce 50%, thereby significantly reduce torque ripple, vibration and the noise of generator, this technique as a result is simple simultaneously, and cost is lower, is fit to extensive use.
Description of drawings
Fig. 1 is the cross section schematic diagram of stator piece
Fig. 2 is the local enlarged diagram of stator piece tooth section
Wherein, 1 stator piece tooth section, 2-groove.
Concrete execution mode
1,2 describe by reference to the accompanying drawings.
Permanent magnet generator stator sheet tooth section of the present utility model 1 position is provided with the not groove 2 of rule.Each stator piece tooth section is provided with a groove 2, can make the cogging torque frequency of generator increase to 2 times, makes simultaneously the torque amplitude of generator reduce 50%, thereby significantly reduces torque ripple, vibration and the noise of generator.
Claims (1)
1. the permanent magnet generator stator sheet that can reduce cogging torque, is characterized in that, described stator piece each tooth section position all arranges a groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220525135 CN203014513U (en) | 2012-10-15 | 2012-10-15 | Permanent magnet generator stator capable of reducing cogging torque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220525135 CN203014513U (en) | 2012-10-15 | 2012-10-15 | Permanent magnet generator stator capable of reducing cogging torque |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203014513U true CN203014513U (en) | 2013-06-19 |
Family
ID=48606070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220525135 Expired - Fee Related CN203014513U (en) | 2012-10-15 | 2012-10-15 | Permanent magnet generator stator capable of reducing cogging torque |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203014513U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904793A (en) * | 2014-03-28 | 2014-07-02 | 湖北立锐机电有限公司 | Integrated motor stator punching sheet, motor stator and rotating motor using integrated motor stator punching sheet |
| CN107659006A (en) * | 2017-10-31 | 2018-02-02 | 哈尔滨电机厂有限责任公司 | V-shaped groove generator stator core structure |
-
2012
- 2012-10-15 CN CN 201220525135 patent/CN203014513U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904793A (en) * | 2014-03-28 | 2014-07-02 | 湖北立锐机电有限公司 | Integrated motor stator punching sheet, motor stator and rotating motor using integrated motor stator punching sheet |
| CN107659006A (en) * | 2017-10-31 | 2018-02-02 | 哈尔滨电机厂有限责任公司 | V-shaped groove generator stator core structure |
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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: 20130619 Termination date: 20151015 |
|
| EXPY | Termination of patent right or utility model |