CN203014512U - Permanent magnet generator with stator skewed slot - Google Patents
Permanent magnet generator with stator skewed slot Download PDFInfo
- Publication number
- CN203014512U CN203014512U CN 201320011997 CN201320011997U CN203014512U CN 203014512 U CN203014512 U CN 203014512U CN 201320011997 CN201320011997 CN 201320011997 CN 201320011997 U CN201320011997 U CN 201320011997U CN 203014512 U CN203014512 U CN 203014512U
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- CN
- China
- Prior art keywords
- stator
- permanent magnet
- magnet generator
- stator core
- raised item
- 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 - Lifetime
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Abstract
The utility model discloses a permanent magnet generator with a stator skewed slot, which comprises a generator stator. The stator comprises a stator shell and stator core punching plates, and further comprises a plurality of protruding bars, wherein the protruding bars are installed on the inner wall of the stator shell according to a certain inclination degree, the reverse sides of yoke parts of the stator core punching plates are provided with clamping slots used for being engaged with the protruding bars, the stator core punching plates are laminated and engaged with the protruding bars through the clamping slots, and the inclination degree of the stator skewed slot is the same as the mounting inclination degree of the protruding bars after the clamping slots are laminated. According to the utility model, the stator skewed slot of the permanent magnet generator can be realized, the cogging torque is reduced effectively, and harmonic waves are reduced at the same time. In addition, the method of realizing the stator skewed slot requires fewer tools, the cost is low, and the process is simple.
Description
Technical field
The utility model relates to a kind of permanent magnet generator, particularly relates to a kind of permanent magnet generator with skewed stator slot.
Background technology
The permanent magnet direct-drive generator is because reliability is high, and maintenance is few and become one of mainstream technology of wind power generation.But powerful permanent magnet direct-drive generator is because size is large, and weight is large, and cogging torque is also large.The cogging torque of magneto improves along with the raising of permanent magnet material performance, permanent magnet and unshakable in one's determination the interaction, inevitably produce cogging torque, cause the fluctuation of torque, cause detent torque large, cause vibration and noise, they directly have influence on startup and the generating of low wind speed of permanent magnet generator.Cogging torque is the distinctive problem of permanent magnet generator, is one of high-performance permanent magnet generator designs and the necessary key issue considered of manufacturing.Adopt skewed slot can effectively reduce cogging torque, but large-scale permanent magnet generator adopt skewed slot, more difficult realization on technique.
The utility model content
The purpose of this utility model is to provide a kind of permanent magnet generator with skewed stator slot, effectively realizes the skewed slot scheme of permanent magnet generator.
For achieving the above object, the utility model adopts following technical scheme:
A kind of permanent magnet generator with skewed stator slot, comprise generator unit stator, described stator comprises stator case and stator core stamping sheet, described stator also comprises many raised items, described raised item is arranged on the stator case inwall by constant slope, the described stator core stamping sheet yoke section back side has the draw-in groove that engages for described raised item, described stator core stamping sheet is fastened on described raised item by draw-in groove is stacked, and the stacked gradient rear and skewed stator slot of described draw-in groove is consistent with the installation gradient of raised item.
Further, described raised item is fixedly mounted in stator case by screw.
Further, described raised item is coattail strip, fit with the stator case inwall for narrow of described coattail strip, and the draw-in groove on described stator core stamping sheet is dovetail groove.
Further, described stator core stamping sheet is fanning strip.
Further, described permanent magnet generator is large directly driven permanent magnet wind generating.
Owing to adopting technique scheme, the utility model has the following advantages at least:
1, because the angle of bevel of needs can be regulated by the angle of inclination of raised item, simultaneously, the stator core stamping sheet yoke section back side has the draw-in groove that engages for raised item, and the gradient after draw-in groove is stacked and the gradient of skewed stator slot are consistent with the installation gradient of raised item, by being equipped with of said structure, adopt raised item to locate, the utility model can conveniently be realized skewed stator slot, effectively reduce cogging torque, reduced simultaneously harmonic wave.
2, due to the stator core stamping sheet that has adopted coattail strip and coordinated with it, the frock quantity that needs is few, simple in structure, and cost is low, and technique is simple.
Description of drawings
Above-mentioned is only the general introduction of technical solutions of the utility model, and for can clearer understanding technological means of the present utility model, the utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is raised item scheme of installation (front view).
Fig. 2 is the stator core stamping sheet scheme of installation.
Fig. 3 is the coattail strip structural representation.
Fig. 4 is the stator core stamping sheet structural representation.
Embodiment
as Fig. 1, 2, 3, shown in 4, a kind of permanent magnet generator with skewed stator slot of the present utility model, take large directly driven permanent magnet wind generating as example, comprise generator unit stator, described stator comprises stator case 1 and stator core stamping sheet 2, described stator also comprises many raised items 3, described raised item 3 is arranged on stator case 1 inwall by constant slope, the described stator core stamping sheet 2 yoke section back sides have the draw-in groove 21 that engages for described raised item 3, described stator core stamping sheet 2 is fastened on described raised item 3 by draw-in groove 21 is stacked, and the stacked gradient rear and skewed stator slot of described draw-in groove 21 is consistent with the installation gradient of raised item 3.Described raised item 3 can be fixedly mounted in stator case 1 by screw 4, and the quantity of screw 4 is decided according to the length of the stator core that is comprised of stator core stamping sheet 2.
Preferably, described raised item 3 can be coattail strip (Fig. 3), fit with stator case 1 inwall for narrow of described coattail strip, and the dovetail groove of the draw-in groove on described stator core stamping sheet 2 21 for coordinating.In addition, described stator core stamping sheet 2 can be fanning strip (Fig. 4).
The skewed slot implementation method of above-mentioned permanent magnet generator comprises the following steps: A. as required fixing described raised item 3 of angle of bevel on stator case 1 inwall; B. laminate successively described stator core stamping sheet 2 along raised item; C. laminate at stator core stamping sheet 2 and compress stator core stamping sheet 2 when reaching a certain height, and the raised item 3 of tension pressing section; D. laminate at stator core stamping sheet 2 and compress all stator core stamping sheets 2 when highly meeting the requirements, and strain all raised items 3.
In described steps A, raised item 3 can be arranged on stator case 1 inwall by screw 4, and trip bolt 4; In described step C, strain the raised item 3 of pressing section by trip bolt 4; In described step D, strain all raised items 3 by trip bolt 4.
Specifically adopt coattail strip with raised item 3, it is example that stator core stamping sheet 2 adopts fanning strip, at first, vertically be positioned over generator unit stator housing 1 on workbench, on stator case 1 inwall, coattail strip is installed, the installation gradient of coattail strip on stator case is the gradient of skewed stator slot, fits with stator case 1 inwall for narrow of coattail strip, and trip bolt 4; Secondly, the mode that press-fits in the inner employing of stator case 1 laminates stator core stamping sheet 2, makes both identical inlay cards by the dovetail groove that coordinates with coattail strip on stator core stamping sheet 2, can use the groove lining bar to make lamination neat; When carrying out lamination, can be that several workmans laminate fanning strip simultaneously in stator interior, in this example, each fanning strip be 22.5 °, and every 16 fanning strips consist of a whole circle.Carry out next circle after often having folded a circle.Compress when being laminated to approximately 1/3rd height and 2/3rds height, the coattail strip of the lamination part after compression is strained with screw 4; After record stacking height meets the requirements, fastening all screws 4 after the compression operation is completed, and make it reach regulation moment.
The above; it is only preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection range of the present utility model.
Claims (5)
1. permanent magnet generator with skewed stator slot, comprise generator unit stator, described stator comprises stator case and stator core stamping sheet, it is characterized in that, described stator also comprises many raised items, described raised item is arranged on the stator case inwall by constant slope, the described stator core stamping sheet yoke section back side has the draw-in groove that engages for described raised item, described stator core stamping sheet is fastened on described raised item by draw-in groove is stacked, and the stacked gradient rear and skewed stator slot of described draw-in groove is consistent with the installation gradient of raised item.
2. a kind of permanent magnet generator with skewed stator slot according to claim 1, is characterized in that, described raised item is fixedly mounted in stator case by screw.
3. a kind of permanent magnet generator with skewed stator slot according to claim 1, is characterized in that, described raised item is coattail strip, fit with the stator case inwall for narrow of described coattail strip, and the draw-in groove on described stator core stamping sheet is dovetail groove.
4. a kind of permanent magnet generator with skewed stator slot according to claim 1, is characterized in that, described stator core stamping sheet is fanning strip.
5. the described a kind of permanent magnet generator with skewed stator slot of according to claim 1-4 any one, is characterized in that, described permanent magnet generator is large directly driven permanent magnet wind generating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320011997 CN203014512U (en) | 2013-01-09 | 2013-01-09 | Permanent magnet generator with stator skewed slot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320011997 CN203014512U (en) | 2013-01-09 | 2013-01-09 | Permanent magnet generator with stator skewed slot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203014512U true CN203014512U (en) | 2013-06-19 |
Family
ID=48606069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320011997 Expired - Lifetime CN203014512U (en) | 2013-01-09 | 2013-01-09 | Permanent magnet generator with stator skewed slot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203014512U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051077A (en) * | 2013-01-09 | 2013-04-17 | 国电联合动力技术有限公司 | Permanent magnet generator with stator inclined grooves and inclined groove realization method of permanent magnet generator |
-
2013
- 2013-01-09 CN CN 201320011997 patent/CN203014512U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051077A (en) * | 2013-01-09 | 2013-04-17 | 国电联合动力技术有限公司 | Permanent magnet generator with stator inclined grooves and inclined groove realization method of permanent magnet generator |
| CN103051077B (en) * | 2013-01-09 | 2015-02-04 | 国电联合动力技术有限公司 | Permanent magnet generator with stator inclined grooves and inclined groove realization method of permanent magnet generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |