CN202940646U - 900KW electric excitation wind mill generator magnetic pole - Google Patents
900KW electric excitation wind mill generator magnetic pole Download PDFInfo
- Publication number
- CN202940646U CN202940646U CN2012205309592U CN201220530959U CN202940646U CN 202940646 U CN202940646 U CN 202940646U CN 2012205309592 U CN2012205309592 U CN 2012205309592U CN 201220530959 U CN201220530959 U CN 201220530959U CN 202940646 U CN202940646 U CN 202940646U
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- China
- Prior art keywords
- generator
- magnetic pole
- pole core
- excitation wind
- electric excitation
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- 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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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Wind Motors (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a 900KW electric excitation wind mill generator magnetic pole which comprises a magnetic pole iron core with a T shaped longitudinal section and an arc-shaped top surface. A side wall of an upper part of the magnetic pole iron core is perpendicular to the horizontal plane. The 900KW electric excitation wind mill generator magnetic pole has the advantages that the shape of the magnetic pole iron core is changed, thus maximum and minimum air gap ratios of a generator stator and a generator rotor are changed, a potential waveform is close to a sine waveform, a harmonic content is decreased, an additional loss of a generator is reduced, the temperature rise of the generator is improved, the stable operation of the generator is facilitated, at the same time, a cogging torque of the generator is reduced, when the generator is started, a wind speed is low, the running is stable, and the noise is low.
Description
Technical field
The utility model relates to generator magnetic pole, specifically, relates to 900KW electricity excitation wind-driven generator magnetic pole.
Background technology
The current residing state of 900KW electricity excitation wind-driven generator magnetic pole as shown in Figure 1, comprise stator core 5 and pole core 1, the radius 2450mm of stator core patio, pole core 1 longitudinal section is T shape, end face 2 is circular arc radius 2444mm, and chord length is 138mm, and the sidewall 3 on top slopes inwardly from the bottom to top, the excessive angle that radius 15mm is arranged between top and sidewall, the pole core bottom is fixedly connected with other elements.The counter potential waveform of the pole core generator of this structure is approximately flat-topped waveform, 5,7 subharmonic content are large, so the crest voltage of generator is high, poor with the matching of the full power convertor of wind powered generator system, long peak value surge voltage, insulation system is harmful to, greatly shortens the useful life of generator; Because harmonic content is large, the supplementary load loss of generator just, cause the temperature rise of generator to strengthen, and are unfavorable for the operation of generator.
The utility model content
The purpose of this utility model is to provide 900KW electricity excitation wind-driven generator magnetic pole, can effectively solve the problem that existing 900KW electricity excitation wind-driven generator crest voltage is high, the stator winding life-span is short.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions: 900KW electricity excitation wind-driven generator magnetic pole, comprise pole core, the longitudinal section of described pole core is T shape, the end face of described pole core is circular arc, and the sidewall on described pole core top is perpendicular to horizontal plane.
Preferably, the radius of described pole core end face circular arc is 325.8 ~ 326.2mm, and described pole core end face chord length is 136.8 ~ 137.2mm; Best pole core parameter, controlled stator and rotor maximum and minimum air void ratio effectively.
Preferably, be provided with circular arc chamfering between described pole core end face and upper portion side wall; Be convenient to the manufacture of pole core, eliminate stress simultaneously.
Preferably, described circular arc chamfering radius is 5mm; Best circular arc chamfering radius.
Compared with prior art, the utility model has the advantages that: the shape that has changed pole core, thereby generator stator and rotor maximum and minimum air void ratio are changed, make potential waveform more approach sinusoidal wave pattern, reduced harmonic content, the supplementary load loss of generator reduce, the temperature rise of generator also improves, and is conducive to the stable operation of generator, and the cogging torque of generator reduces simultaneously, wind speed when generator starts is low, operates steadily, noise is little.
The accompanying drawing explanation
Fig. 1 is the structural representation of 900KW electricity excitation wind-driven generator magnetic pole before improving;
The structural representation that Fig. 2 is the utility model 900KW electricity excitation wind-driven generator magnetic pole;
The structural representation that Fig. 3 is pole core in the utility model.
Embodiment
Consulting Fig. 2, Fig. 3 is the embodiment of the utility model 900KW electricity excitation wind-driven generator magnetic pole, 900KW electricity excitation wind-driven generator magnetic pole, comprise pole core 1, the longitudinal section of described pole core 1 is T shape, the end face 2 of described pole core 1 is circular arc, the sidewall 3 on described pole core 1 top is perpendicular to horizontal plane, the radius of described pole core 1 end face 2 circular arcs is 326mm, described pole core 1 end face 2 chord lengths are 137mm, be provided with circular arc chamfering 4 between described pole core 1 end face 2 and upper portion side wall 3, described circular arc chamfering 4 radiuses are 5mm.
The shape and size of stator core 5 are constant, minimum air void between stator core 5 and pole core 1 keeps 5.5mm simultaneously, utilize the Ansoft software optimization to analyze, make maximum and the minimum air gap ratio delta max of generator: δ min=2.15 is in a zone of reasonableness, thereby improve the performance of generator, make potential waveform more approach sinusoidal wave pattern, reduced harmonic content, the supplementary load loss of generator reduce, the temperature rise of generator also improves, be conducive to the stable operation of generator, the cogging torque of generator reduces simultaneously, wind speed when generator starts is low, operate steadily, noise is little.
The foregoing is only specific embodiment of the utility model, but technical characterictic of the present utility model is not limited to this, any those skilled in the art is in field of the present utility model, and the variation of doing or modification all are encompassed among the scope of the claims of the present utility model.
Claims (4)
1.900KW electric excitation wind-driven generator magnetic pole, comprise pole core (1), it is characterized in that: the longitudinal section of described pole core (1) is T shape, and the end face (2) of described pole core (1) is circular arc, and the sidewall (3) on described pole core (1) top is perpendicular to horizontal plane.
2. 900KW as claimed in claim 1 electricity excitation wind-driven generator magnetic pole, it is characterized in that: the radius of described pole core (1) end face (2) circular arc is 325.8 ~ 326.2mm, described pole core (1) end face (2) chord length is 136.8 ~ 137.2mm.
3. 900KW electricity excitation wind-driven generator magnetic pole as claimed in claim 1 or 2, is characterized in that: between described pole core (1) end face (2) and upper portion side wall (3), be provided with circular arc chamfering (4).
4. 900KW as claimed in claim 3 electricity excitation wind-driven generator magnetic pole, it is characterized in that: described circular arc chamfering (4) radius is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205309592U CN202940646U (en) | 2012-10-17 | 2012-10-17 | 900KW electric excitation wind mill generator magnetic pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205309592U CN202940646U (en) | 2012-10-17 | 2012-10-17 | 900KW electric excitation wind mill generator magnetic pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202940646U true CN202940646U (en) | 2013-05-15 |
Family
ID=48324869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205309592U Expired - Lifetime CN202940646U (en) | 2012-10-17 | 2012-10-17 | 900KW electric excitation wind mill generator magnetic pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202940646U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016165886A1 (en) * | 2015-04-13 | 2016-10-20 | Wobben Properties Gmbh | Wind energy installation and pole stack for a synchronous generator of a wind energy installation and synchronous generator |
| US10483814B2 (en) | 2013-04-08 | 2019-11-19 | Wobben Properties Gmbh | Synchronous-generator pole stack |
-
2012
- 2012-10-17 CN CN2012205309592U patent/CN202940646U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10483814B2 (en) | 2013-04-08 | 2019-11-19 | Wobben Properties Gmbh | Synchronous-generator pole stack |
| WO2016165886A1 (en) * | 2015-04-13 | 2016-10-20 | Wobben Properties Gmbh | Wind energy installation and pole stack for a synchronous generator of a wind energy installation and synchronous generator |
| KR20170136607A (en) * | 2015-04-13 | 2017-12-11 | 보벤 프로퍼티즈 게엠베하 | Pole stack and synchronous generators for synchronous generators in wind farms and wind farms |
| CN107534333A (en) * | 2015-04-13 | 2018-01-02 | 乌本产权有限公司 | The pole group and synchronous generator of wind energy plant and synchronous generator for wind energy plant |
| JP2018512039A (en) * | 2015-04-13 | 2018-04-26 | ヴォッベン プロパティーズ ゲーエムベーハーＷｏｂｂｅｎ Ｐｒｏｐｅｒｔｉｅｓ Ｇｍｂｈ | Wind power generator, magnetic pole laminate for synchronous generator of wind power generator, and synchronous generator |
| EP3557732A1 (en) * | 2015-04-13 | 2019-10-23 | Wobben Properties GmbH | Wind energy installation and pole stack for a synchronous generator of a wind energy installation and synchronous generator |
| CN107534333B (en) * | 2015-04-13 | 2020-08-14 | 乌本产权有限公司 | Wind power plant and pole group of synchronous generator for wind power plant and synchronous 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 |
Granted publication date: 20130515 |
|
| CX01 | Expiry of patent term |