CN103001450A - Wind generating set - Google Patents
Wind generating set Download PDFInfo
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- CN103001450A CN103001450A CN2011102813332A CN201110281333A CN103001450A CN 103001450 A CN103001450 A CN 103001450A CN 2011102813332 A CN2011102813332 A CN 2011102813332A CN 201110281333 A CN201110281333 A CN 201110281333A CN 103001450 A CN103001450 A CN 103001450A
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- magnet
- coil
- wind turbine
- turbine generator
- insulation layer
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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
Abstract
The invention discloses a wind generating set which comprises a magnet and a coil. The magnet is installed on one of a stator component and a rotor component, the coil is installed on the other of the stator component and the rotor component, and accordingly the magnet faces to the coil and a preset gap is formed between the magnet and the coil. Therefore, when the stator component and the rotor component move relatively, the coil cuts lines of magnetic force of the magnet to generate power. The surface of the magnet, facing to the coil, is coated with a thermal insulation layer. The magnet of the wind generating set is guaranteed to operate at the safe designed temperature, and the risk of loss of exaction of the magnet caused by temperature rise is reduced.
Description
Technical field
The present invention relates to a kind of wind turbine generator, more particularly, relate to and a kind of magnet has been carried out improved wind turbine generator.
Background technology
The direct wind-driven generator group can directly link to each other with wind wheel, saved the higher gearbox parts of failure rate in traditional wind generator system, reduced the maintenance work of wind turbine generator, and reduced noise, had efficient height, good reliability, the low advantage of maintenance cost and be widely used.
Fig. 1 shows the structural representation of the generator of traditional permanent magnet direct-driving aerogenerator group.With reference to Fig. 1, the generator of traditional permanent magnet direct-driving aerogenerator group comprises: stator 1, and cylindrical, coil brace 7 is installed on the outer surface of stator 1 regularly, at coil brace 7 iron core 4 is installed, at iron core 4 coil 5 is installed; Rotor 3, be installed on the stator 1 by bearing 2, magnet carrier 8 is installed on the outer surface of rotor 3 regularly, inner surface at magnet carrier 8 is equipped with magnet 6, wherein, magnet 6 faces with each other with coil 5, and is formed with predetermined gap (for example, 10mm) between magnet 6 and coil 5.
With reference to Fig. 1, the wind power generation process is exactly rotor 3 rotations that drive generator by blade rotation, rotor 3 drive magnet carriers 8 and the magnet 6 that is installed on the magnet carrier 8 rotate together, and coil 5 is static with respect to rotor 3 and magnet 6, thereby so that coil 5 cuts the magnetic line of force of magnets 6 to generate electricity.In power generation process, the large calorimetric of coil 5 meeting generations of generator, because the gap between magnet 6 and the coil 5 is very little, therefore can be owing to the heat transmission between coil 5 and the magnet 6 so that the rising of the temperature of the magnet 6 on the rotor 3 of generator.The result can cause the degradation of magnet, and magnetic field intensity weakens, and is final so that the Efficiency Decreasing of generator.
On the one hand, can solve the problems of the technologies described above by the performance that improves magnet 6, the material of the performance of magnet 6 and magnet 6 itself has close relationship, and selection higher grade of magnet material magnet 6 can use under higher safe working temperature.But, select the magnet 6 of higher material rate to mean higher cost, and along with the rising of the material rate of magnet 6, higher to the requirement of rare earth material, selectable scope is less.In addition, along with the continuous maximization of wind turbine generator, the size of generator also is being on the increase the use amount of magnet 6 also in continuous increase, causes cost constantly to increase.
On the other hand, by special additional cooling system for magnet 6 is set in generator, magnet 6 is cooled off in good time and can solve the problems of the technologies described above.But, arrange for the additional cooling system meeting of magnet 6 so that the complex structure of wind turbine generator, and can increase the manufacturing cost of wind turbine generator.
Summary of the invention
In order to solve the problems of the technologies described above, a kind of like this wind turbine generator is proposed, described wind-force wind turbine can solve the magnet temperature rising that prior art exists, and performance reduces, and the loss of excitation problem.In addition, described wind turbine generator can also solve the complex structure that causes for the additional cooling system of magnet specialized designs, the problem that manufacturing cost increases.
One aspect of the present invention provides a kind of wind turbine generator, and described wind turbine generator comprises: magnet is installed in stator module and the rotor assembly; Coil, be installed in stator module and the rotor assembly another, so that magnet and coil face with each other, and between magnet and coil, be formed with predetermined gap, thereby when stator module and rotor assembly generation relative motion, the magnetic line of force of coil cutting magnet wherein, is coated with heat insulation layer on the surface in the face of coil of magnet to generate electricity.
According to the present invention, the stator in the described stator module can be cylindrical, and coil brace is installed on the outer surface of described stator regularly, and described coil is installed on the coil brace; Rotor in the described rotor assembly is installed on the described stator by bearing, and magnet carrier is installed on the outer surface of described rotor regularly, and described magnet is installed on the inner surface of magnet carrier.
According to the present invention, can magnet except with surface that magnet carrier contacts all surface be coated with heat insulation layer.
According to the present invention, the thickness of described heat insulation layer can be determined according to the material property of the power of described wind turbine generator, described predetermined gap and heat insulation layer.
According to the present invention, described heat insulation layer can form by spraying or plating.
According to the present invention, described heat insulation layer can be ceramic layer.
According to the present invention, described ceramic layer can be comprised of at least a material of selecting the group that forms from silicon nitride, silica, aluminium oxide, aluminium nitride, zirconia.
According to the present invention, the thickness of described heat insulation layer can be 2-8mm.
According to the present invention, described coil brace can comprise: annular slab, and described stator passes the centre bore of described annular slab; The coil brace cylinder is fixed on the external peripheral surface of annular slab, and described coil is installed on the outer surface of coil brace cylinder; Ribs is installed between the inner surface of stator and coil brace cylinder, is used for the intensity of line feeder coil support.
According to the present invention, can between coil brace cylinder and coil, be provided with iron core.
The magnet that can ensure wind turbine generator according to wind turbine generator of the present invention is worked under the design temperature of safety, reduces the loss of excitation risk that magnet raises and produces owing to temperature.
Description of drawings
In conjunction with the drawings, from the description of the following examples, the present invention these and/or other side and advantage will become clear, and are easier to understand, wherein:
Fig. 1 shows the structural representation of the generator of traditional permanent magnet direct-driving aerogenerator group;
Fig. 2 shows the structural representation according to the generator of the wind turbine generator of the first exemplary embodiment of the present invention;
Fig. 3 shows the enlarged drawing according to the A part of the generator of the wind turbine generator of the first exemplary embodiment of the present invention;
Fig. 4 shows the structural representation according to the generator of the wind turbine generator of the second exemplary embodiment of the present invention;
Fig. 5 shows the enlarged drawing according to the A ' part of the generator of the wind turbine generator of the second exemplary embodiment of the present invention.
Embodiment
Now embodiments of the invention are described in detail, its example shown in the accompanying drawings, wherein, identical label represents identical element all the time.Below with reference to the accompanying drawings embodiment is described to explain the present invention.
Fig. 2 shows the structural representation according to the generator of the wind turbine generator of the first exemplary embodiment of the present invention.
With reference to Fig. 2, comprise according to the wind-driven generator of the first embodiment of the present invention: stator 1, cylindrical, coil brace 7 is installed on the outer surface of stator 1 regularly, at coil brace 7 coil 5 is installed; Rotor 3, be installed on the stator 1 by bearing 2, barrel-shaped magnet carrier 8 is installed on the outer surface of rotor 3 regularly, inner surface at magnet carrier 8 is equipped with magnet 6, magnet 6 faces with each other with coil 5, and between magnet 6 and coil 5, be formed with predetermined gap, wherein, be coated with heat insulation layer on the surface in the face of coil 5 of magnet 6.Wherein, stator 1 and coil brace 7 form stator module, and rotor 3 and magnet carrier 8 form rotor assembly.
Although in the present invention, showing coil 5 is installed on the stator 1 by coil brace 7, but do not invent and be not limited to this, coil 5 also can be installed on the stator 1 by other fixtures, as long as so that coil 5 can cut the magnetic line of force of magnet 6 to generate electricity.
Barrel-shaped magnet carrier 8 comprises: base plate 81, and rounded, be formed with centre bore in the central authorities of base plate 81, rotor 3 passes the centre bore of described base plate 81; Side surface 82 extends to a side with the excircle of cylindrical shape from base plate 81, and magnet 6 is installed on the interior perimeter surface of side surface 82.
Although in the present invention, showing magnet 6 is installed on the rotor 3 by magnet carrier 8, but do not invent and be not limited to this, magnet 6 also can be installed on the rotor 3 by other fixtures, as long as so that coil 5 can cut the magnetic line of force of magnet 6 to generate electricity.
In addition, can iron core 4 be installed at coil 5 and coil brace cylinder 72, to improve generating efficiency.
Fig. 3 shows the enlarged drawing according to the A part of the generator of the wind turbine generator of the first exemplary embodiment of the present invention.Below with reference to the magnet that be formed with heat insulation layer 6 of Fig. 3 detailed description according to the generator of wind turbine generator of the present invention.With reference to Fig. 3, in order to guarantee stability and the reliability in high-temperature condition lower magnet 6 performances, be formed with heat insulation layer at the lower surface of magnet 6, that is, be formed with heat insulation layer on the surface of facing with coil 5 of magnet 6 or on the surface of the most close coil 5 of magnet 6.
Specifically, before on the interior perimeter surface that magnet 6 is installed in side surface 82, at first magnet is carried out coating and process, for example, can form described heat insulation layer by spraying or plating.
Alternatively, described heat insulation layer can be ceramic layer, and described ceramic layer can be comprised of at least a material of selecting the group that forms from silicon nitride, silica, aluminium oxide, aluminium nitride, zirconia.
Alternatively, the thickness of described heat insulation layer can be determined according to the whole ventilation cooling structure of the predetermined gap (for example, 5mm to 15mm) between power (heating situation), magnet 6 and the coil 5 of described wind-driven generator, wind turbine generator and the material property of heat insulation layer.
Alternatively, the thickness of heat insulation layer is 2-8mm.
Although in the present invention, heat insulation layer forms by spraying or plating technic, the invention is not restricted to this, and heat insulation layer can form by other suitable techniques, if can so that heat insulation layer at high temperature still maintenance be securely fixed on the magnet 6.
Although in the present invention, show ceramic layer in the mode of example and can be used as heat insulation layer, the invention is not restricted to this, heat insulation layer also can be other suitable cover layers, only with can so that magnet 6 carry out good thermal insulation and get final product with extraneous.
Fig. 4 shows the structural representation according to the generator of the wind turbine generator of the second exemplary embodiment of the present invention, the coating surface difference of the heat insulation layer on being coated in magnet 6, identical with other structures according to the generator of the wind turbine generator of the first exemplary embodiment of the present invention according to other structures of the generator of the wind turbine generator of the second exemplary embodiment of the present invention.
Fig. 5 shows the enlarged drawing according to the A ' part of the generator of the wind turbine generator of the second exemplary embodiment of the present invention.As shown in Figure 5, can magnet 6 except with surface that the interior perimeter surface of the side surface 82 of magnet carrier 8 contacts all surface (that is, magnet 6 be exposed to outer surface) on be coated with heat insulation layer, thereby so that magnet 6 by adiabatic better.
Although in an embodiment according to the present invention, show the magnet that directly drives in the generator at external rotor permanent magnet and apply heat insulation layer, but general plotting of the present invention (for example can be applicable to other motors, magnet is installed on the stator module and coil is installed in motor on the rotor assembly) in, thereby solve magnet in the high situation of temperature, the problems such as performance reduction, loss of excitation.
According to wind turbine generator of the present invention, the thickness of the heat insulation layer of magnet regulates according to the pore size between power (heating situation), magnet and the coil of generator, the cooling of ventilating and the factors such as material of the heat insulation layer that adopts are determined.Wherein, the material property of described heat insulation layer is better, and the thickness of described heat insulation layer is less.
According to wind turbine generator of the present invention, owing to apply heat insulation layer on the surface of the close coil of magnet at least, therefore, in the constant situation of the coil heating amount of wind turbine generator, so that the temperature of magnet keeps lowlyer, thereby the magnet that can make same grade satisfies the requirement of higher wind turbine generator heating operational environment, perhaps can reduce the material rate of magnet, thereby satisfy its original safe working temperature requirement.
According to wind turbine generator of the present invention, be formed with heat insulation layer on the surface of magnet, thereby can improve the safe working temperature scope of magnet under extreme operational environment.
According to wind turbine generator of the present invention, can ensure that the magnet of wind turbine generator is worked under the design temperature of safety, reduce the loss of excitation risk that magnet raises and produces owing to temperature.
Although the present invention is specifically described with reference to its exemplary embodiment and is shown, but will be understood by those skilled in the art that, in the situation that does not break away from the spirit and scope of the present invention that are defined by the claims, can carry out to it various changes of form and details.
Claims (10)
1. wind turbine generator comprises:
Magnet is installed in stator module and the rotor assembly;
Coil is installed in stator module and the rotor assembly another, so that magnet and coil face with each other, and between magnet and coil, be formed with predetermined gap, thereby when stator module and rotor assembly generation relative motion, the magnetic line of force of coil cutting magnet is to generate electricity
Wherein, be coated with heat insulation layer on the surface in the face of coil of magnet.
2. wind turbine generator as claimed in claim 1, wherein, the stator in the described stator module is cylindrical, and coil brace is installed on the outer surface of described stator regularly, and described coil is installed on the coil brace; Rotor in the described rotor assembly is installed on the described stator by bearing, and magnet carrier is installed on the outer surface of described rotor regularly, and described magnet is installed on the inner surface of magnet carrier.
3. wind turbine generator as claimed in claim 2, wherein, magnet except with surface that magnet carrier contacts all surface be coated with heat insulation layer.
4. such as each described wind turbine generator in the claims 1 to 3, wherein, the thickness of described heat insulation layer is determined according to the material property of the power of described wind turbine generator, described predetermined gap and heat insulation layer.
5. such as each described wind turbine generator in the claims 1 to 3, wherein, described heat insulation layer forms by spraying or plating.
6. such as each described wind turbine generator in the claims 1 to 3, wherein, described heat insulation layer is ceramic layer.
7. wind turbine generator as claimed in claim 6, wherein, described ceramic layer is comprised of at least a material of selecting the group that forms from silicon nitride, silica, aluminium oxide, aluminium nitride, zirconia.
8. wind turbine generator as claimed in claim 4, wherein, the thickness of described heat insulation layer is 2-8mm.
9. wind turbine generator as claimed in claim 2, wherein, described coil brace comprises: annular slab, described stator passes the centre bore of described annular slab; The coil brace cylinder is fixed on the external peripheral surface of annular slab, and described coil is installed on the outer surface of coil brace cylinder; Ribs is installed between the inner surface of stator and coil brace cylinder, is used for the intensity of line feeder coil support.
10. wind turbine generator as claimed in claim 9 wherein, is provided with iron core between coil brace cylinder and coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102813332A CN103001450A (en) | 2011-09-14 | 2011-09-14 | Wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102813332A CN103001450A (en) | 2011-09-14 | 2011-09-14 | Wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103001450A true CN103001450A (en) | 2013-03-27 |
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ID=47929695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102813332A Pending CN103001450A (en) | 2011-09-14 | 2011-09-14 | Wind generating set |
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| Country | Link |
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| CN (1) | CN103001450A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108604850A (en) * | 2016-02-03 | 2018-09-28 | 三菱电机株式会社 | Electric rotating machine |
| CN108757351A (en) * | 2018-03-29 | 2018-11-06 | 北京金风科创风电设备有限公司 | Direct-drive wind generating set |
| CN109167500A (en) * | 2018-09-19 | 2019-01-08 | 北京金风科创风电设备有限公司 | Generator assembly, generator, wind generating set and power generation method |
| CN109510331A (en) * | 2018-12-11 | 2019-03-22 | 新疆金风科技股份有限公司 | A kind of stator and its manufacturing method, generator and wind power generating set |
| CN111622901A (en) * | 2019-02-28 | 2020-09-04 | 西门子歌美飒可再生能源公司 | Direct drive wind turbine |
| CN111692273A (en) * | 2020-06-29 | 2020-09-22 | 北京金风科创风电设备有限公司 | Hybrid damping module, vibration suppression device, vibration suppression method and wind generating set |
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| CN201584875U (en) * | 2010-01-27 | 2010-09-15 | 哈尔滨理工大学 | Megawatt high-voltage permanent magnet synchronous wind power generator |
| CN101951063A (en) * | 2010-08-05 | 2011-01-19 | 三一电气有限责任公司 | Direct driven wind generator |
| EP2333934A1 (en) * | 2009-12-08 | 2011-06-15 | Siemens Aktiengesellschaft | Arrangement to ensure an air gap in an electric machine |
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2011
- 2011-09-14 CN CN2011102813332A patent/CN103001450A/en active Pending
Patent Citations (3)
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| EP2333934A1 (en) * | 2009-12-08 | 2011-06-15 | Siemens Aktiengesellschaft | Arrangement to ensure an air gap in an electric machine |
| CN201584875U (en) * | 2010-01-27 | 2010-09-15 | 哈尔滨理工大学 | Megawatt high-voltage permanent magnet synchronous wind power generator |
| CN101951063A (en) * | 2010-08-05 | 2011-01-19 | 三一电气有限责任公司 | Direct driven wind generator |
Non-Patent Citations (1)
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| 王昆林: "《材料工程基础》", 30 September 2003, 清华大学出版社 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108604850A (en) * | 2016-02-03 | 2018-09-28 | 三菱电机株式会社 | Electric rotating machine |
| CN108757351A (en) * | 2018-03-29 | 2018-11-06 | 北京金风科创风电设备有限公司 | Direct-drive wind generating set |
| CN109167500A (en) * | 2018-09-19 | 2019-01-08 | 北京金风科创风电设备有限公司 | Generator assembly, generator, wind generating set and power generation method |
| CN109510331A (en) * | 2018-12-11 | 2019-03-22 | 新疆金风科技股份有限公司 | A kind of stator and its manufacturing method, generator and wind power generating set |
| CN109510331B (en) * | 2018-12-11 | 2019-11-01 | 新疆金风科技股份有限公司 | A kind of stator and its manufacturing method, generator and wind power generating set |
| CN111622901A (en) * | 2019-02-28 | 2020-09-04 | 西门子歌美飒可再生能源公司 | Direct drive wind turbine |
| CN111692273A (en) * | 2020-06-29 | 2020-09-22 | 北京金风科创风电设备有限公司 | Hybrid damping module, vibration suppression device, vibration suppression method and wind generating set |
| CN111692273B (en) * | 2020-06-29 | 2022-02-01 | 北京金风科创风电设备有限公司 | Hybrid damping module, vibration suppression device, vibration suppression method and wind generating set |
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Application publication date: 20130327 |