CN202268751U - Magnetic pole structure of power generator - Google Patents
Magnetic pole structure of power generator Download PDFInfo
- Publication number
- CN202268751U CN202268751U CN2011203736305U CN201120373630U CN202268751U CN 202268751 U CN202268751 U CN 202268751U CN 2011203736305 U CN2011203736305 U CN 2011203736305U CN 201120373630 U CN201120373630 U CN 201120373630U CN 202268751 U CN202268751 U CN 202268751U
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- pole
- magnetic poles
- damping
- magnetic
- magnetic pole
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Abstract
The utility model provides a magnetic pole structure of a power generator. Even magnetic poles are uniformly distributed in the circumferential direction of an air gap of the power generator, the polarities of adjacent magnetic poles are opposite, a plurality of pairs of magnetic poles are formed, the magnetic poles have pole bodies and pole shoes in integral structures, exciting windings are wound on the pole bodies, the pole shoes are provided with a plurality of damping strips which are uniformly distributed in the circumferential direction of the pole shoes, the damping strips penetrate through the pole shoes, two ends of the damping strips extend out of two end surfaces of the pole shoes, damping rings are respectively arranged on two end surfaces of the magnetic poles, two ends of the damping strips of the magnetic poles are respectively welded on the two damping rings for forming a cage-shaped damping winding, the pole shoe center lines and the pole body center lines of the magnetic poles are not positioned on the same straight line, the two pole shoe center lines of each pair of magnetic poles deviate a certain radian at equal intervals in counter directions or opposite direction relative to interpole center lines, and special magnetic poles in nonuniform distribution in the circumferential direction of the air gaps are formed. The magnetic pole structure has the advantages that the electric energy quality of the power generator can be improved, the design, process and manufacture difficulty level is low, the structure is easy to realize on engineering, the cost is low, the applicability is high, and a good popularization value is realized.
Description
Technical field
The utility model relates to generator, the field structure of concrete a kind of generator.
Background technology
In the generator designs, for fear of noise and vibration that fractional slot winding possibly occur, some generator has adopted the integer groove.But the integer groove can make and induce in the stator winding with the slot ripples is main high order harmonic component electromotive force, causes that the distortion of stator electromotive force increases, and can not meet the demands the quality of power supply.Usually the means of head it off are to use stator iron core chute instead, select bigger q value (every extremely every phase groove number) etc.But in the engineering design of high-rating generator, the stator iron core chute structure has increased design, technology and manufacture difficulty; Select bigger q value that the groove number is significantly increased, difficulty of processing is big, and cost is high.Especially, under the situation that unit head and diameter are restricted, that gives electromagnetic scheme preferably brings difficulty.
Summary of the invention
The purpose of the utility model is the deficiency to the routine techniques means, proposes a kind of special field structure of generator, this structure can weaken the slot ripples that integer groove winding brings significantly, and has guaranteed the preferred of electromagnetic scheme under the specific condition.
The utility model is realized through following technical scheme:
A kind of field structure of generator, even number of poles circumferentially evenly distributes along power generator air gap, and adjacent pole polarity is opposite; Form somely to magnetic pole, said magnetic pole has integrally-built pole body and pole shoe, and said pole body is wound with excitation winding; Said pole shoe is provided with some amortisseur bars, circumferentially is uniformly distributed with along pole shoe, and amortisseur bar runs through pole shoe; Two end faces of pole shoe are stretched out at two ends; Two end faces at magnetic pole are respectively equipped with damping ring, and the two ends of the amortisseur bar of all magnetic poles are welded on respectively on two damping rings, constitute a cage shape damping winding; The pole shoe center line of said magnetic pole and pole body center line be not on same straight line, and the bipolar shoe center line of every pair of magnetic pole is formed on the air gap week special magnetic pole of uneven distribution upwards with respect to the interpolar center line in opposite directions or reverse pair-wise offset certain radian.
Said magnetic pole pole shoe center line is 0.25 stator tooth distance with respect to the skew radian of interpolar center line.
Said damping ring is a segmental structure, is constituted by several segmental arcs, and segmental arc quantity equals number of magnetic poles, and adjacent segmental arc adopts metal connecting piece to connect.
The material of said metal connecting piece is identical with the material of damping ring.
The advantage of the utility model is:
The field structure of the generator of the utility model can effectively improve the slot ripples that exists in motor gas-gap magnetic field and the no-load emf, improves the generator quality of power supply; Design, technology and manufacture difficulty are low, and it is preferred to be convenient to electromagnetic scheme, are easy on the engineering realize; Cost is low, and applicability is strong, can be used for conventional stacked hydraulic generator, is specially adapted to the strict tubular-turbine generator of dimensional requirement is had excellent popularization and is worth.
Description of drawings
Fig. 1 is the profile (rotor local, a pair of magnetic pole) of this magnetic pole
Fig. 2 is the radial view (rotor local, a pair of magnetic pole) of this magnetic pole
Label is represented among the figure: 1-pole body, 2-pole shoe, 3-amortisseur bar, 4-damping ring, 5-excitation winding, a-pole shoe center line, b-pole body center line, c-interpolar center line.
Embodiment
Like Fig. 1, shown in Figure 2: the utility model provides the field structure of a kind of generator, and even number of poles circumferentially evenly distributes along power generator air gap, and adjacent pole polarity is opposite, forms some to magnetic pole.This magnetic pole has integrally-built pole body 1 and pole shoe 2, and said pole body 1 is wound with excitation winding 5, and said pole shoe 2 is provided with some amortisseur bars 3; Circumferentially be uniformly distributed with along pole shoe 2; Amortisseur bar 3 runs through pole shoe 2, and two end faces of pole shoe 2 are stretched out at two ends, is respectively equipped with damping ring 4 at two end faces of magnetic pole; The two ends of the amortisseur bar 3 of all magnetic poles are welded on respectively on two damping rings 4, constitute a cage shape damping winding.
The characteristic point of the utility model is: the pole shoe center line a of magnetic pole and pole body center line b be not on same straight line; Two pole shoe center line a of every pair of magnetic pole are formed on the air gap week special magnetic pole of uneven distribution upwards with respect to interpolar center line c in opposite directions or reverse pair-wise offset certain radian.That is to say that the pole body 1 of this magnetic pole is circumferentially equally distributed, and pole shoe 2 is circumferential uneven distributions.
Damping ring 4 is segmental structures, is constituted by several segmental arcs, and segmental arc quantity equals number of magnetic poles, the corresponding magnetic pole of each segmental arc, and adjacent segmental arc adopts metal connecting piece 5 to connect; The material of said metal connecting piece 5 is identical with the material of damping ring 4.It more than is the conventional structure of generator magnetic pole.
Calculate and experiment shows through theoretical, pole shoe center line a with respect to the offset distance of interpolar center line c be 0.25 stator tooth apart from the time, effect is best, can significantly weaken the slot ripples composition in the air-gap field, improves the quality of power supply.
Claims (4)
1. the field structure of a generator, even number of poles circumferentially evenly distributes along power generator air gap, and adjacent pole polarity is opposite; Form somely to magnetic pole, said magnetic pole has integrally-built pole body and pole shoe, and said pole body is wound with excitation winding; Said pole shoe is provided with some amortisseur bars, circumferentially is uniformly distributed with along pole shoe, and amortisseur bar runs through pole shoe; Two end faces of pole shoe are stretched out at two ends; Two end faces at magnetic pole are respectively equipped with damping ring, and the two ends of the amortisseur bar of all magnetic poles are welded on respectively on two damping rings, constitute a cage shape damping winding; It is characterized in that: the pole shoe center line of said magnetic pole and pole body center line be not on same straight line; The bipolar shoe center line of every pair of magnetic pole is formed on the air gap week special magnetic pole of uneven distribution upwards with respect to the interpolar center line in opposite directions or reverse pair-wise offset certain radian.
2. the field structure of generator according to claim 1, it is characterized in that: said magnetic pole pole shoe center line is 0.25 stator tooth distance with respect to the skew radian of interpolar center line.
3. the field structure of generator according to claim 1, it is characterized in that: said damping ring is a segmental structure, is constituted by several segmental arcs, and segmental arc quantity equals number of magnetic poles, and adjacent segmental arc adopts metal connecting piece to connect.
4. the field structure of generator according to claim 1, it is characterized in that: the material of said metal connecting piece is identical with the material of damping ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203736305U CN202268751U (en) | 2011-09-30 | 2011-09-30 | Magnetic pole structure of power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203736305U CN202268751U (en) | 2011-09-30 | 2011-09-30 | Magnetic pole structure of power generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202268751U true CN202268751U (en) | 2012-06-06 |
Family
ID=46159535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203736305U Withdrawn - After Issue CN202268751U (en) | 2011-09-30 | 2011-09-30 | Magnetic pole structure of power generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202268751U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354970A (en) * | 2011-09-30 | 2012-02-15 | 东方电气集团东方电机有限公司 | Magnetic pole structure of power generator |
| CN109586429A (en) * | 2018-11-28 | 2019-04-05 | 南京航空航天大学 | Based on every tooth winding and equal stator tooths away from fault tolerant permanent magnet machine |
-
2011
- 2011-09-30 CN CN2011203736305U patent/CN202268751U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354970A (en) * | 2011-09-30 | 2012-02-15 | 东方电气集团东方电机有限公司 | Magnetic pole structure of power generator |
| CN102354970B (en) * | 2011-09-30 | 2014-07-02 | 东方电气集团东方电机有限公司 | Magnetic pole structure of power generator |
| CN109586429A (en) * | 2018-11-28 | 2019-04-05 | 南京航空航天大学 | Based on every tooth winding and equal stator tooths away from fault tolerant permanent magnet machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120606 Effective date of abandoning: 20140702 |
|
| RGAV | Abandon patent right to avoid regrant |