CN201513295U - Direct-drive wind generator set - Google Patents
Direct-drive wind generator set Download PDFInfo
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- CN201513295U CN201513295U CN2009202037575U CN200920203757U CN201513295U CN 201513295 U CN201513295 U CN 201513295U CN 2009202037575 U CN2009202037575 U CN 2009202037575U CN 200920203757 U CN200920203757 U CN 200920203757U CN 201513295 U CN201513295 U CN 201513295U
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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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Abstract
A direct-drive wind generator set belongs to the technical field of wind power generation and comprises a wind wheel unit, a motor unit and a cabin unit which are arranged in a tower drum; a rotor shaft end of the motor unit, which extends out of a front end casing, is connected with a hub of the wind wheel unit; a main shaft end extending out of the rear end casing is fixed on a cabin of the cabin unit; and a stator of the motor unit is connected with a power network through a current transformer. In the utility model, the motor stator is connected with the current transformer, so that electrical energy generated by the generator set can be converted into alternate current with the frequency of 50 Hz and then connected to the power network without the limitation of the rotational speed of a generator. Both a p-m rotor and the stator of the generator are multistaged, so that a motor can reach the predetermined power at low rotational speed. The generator is directly connected with a wind wheel hub, but not accelerated via a gearbox, so that a gearbox is omitted; the volume and the weight of a blower are reduced, the cost and the maintenance program of the gearbox are dispensed with, and the service life and the conversion efficiency of the blower are improved; and meanwhile, the noise and the failure rate of the whole blower are reduced.
Description
Technical field
The utility model belongs to technical field of wind power generation, and particularly relating to a kind of being easier to wind energy transformation is the direct-drive aerogenerator group of electric energy.
Background technique
At occurring in nature, wind is a kind of renewable, pollution-free and energy that reserves are huge, and the kinetic energy that we keep watch is transformed into mechanical energy, again mechanical energy is converted into electric energy, Here it is wind-power electricity generation.Along with global warming and energy crisis, each state is all in the development and utilization that steps up wind-force, and wind generating technology arises at the historic moment under this historical background and be fast-developing.
Utilize wind-power electricity generation, the '30s as far back as the beginning of this century has just begun in fact, has just successfully developed some small wind-driven generators abroad, and the needed device of these wind-power electricity generations is exactly our today of said wind power generating set.Early stage unit comprises that wind wheel, transmission device, generator and pylon structure and accessory etc. partly form.Wherein, wind wheel is the key component that the kinetic energy of keeping watch changes mechanical energy into, and it generally is fixed on the impeller and is formed by two (or three) propeller cavitations.When wind during to the paddle face, the pressure reduction at the blade working surface and the back side just can produce a load, and the one-component of this load forms a torsional moment around hub axis, and the wind wheel that just can drive blower fan rotates.Transmission device except transmitting torque, also will be converted into the high speed rotating that generator needs to the low speed rotation of impeller, so transmission device also has gear-box to form except bearing and coupling.And pylon must satisfy intensity, rigidity and stability requirement as the physical support of whole blower fan.Certain altitude is arranged simultaneously, and this highly is by the decision of the wind regime of this area's different heights.Accessory mainly is in order to be implemented in wind direction, when wind speed changes, the regulatory function of whole angle of impeller and impeller blade angle to be existed.Wherein gear-box is rate of fault and all higher parts of spoilage in present MW grade wind driven generator unit, and that develops a kind of science directly drives the wind power generating set of generator by wind wheel, has become a trend of wind power technology development.
The model utility content
At the technical problem of above-mentioned existence, the utility model provides a kind of direct-drive aerogenerator group.It is directly to drive generator by wind wheel, makes the equipment of generator for electricity generation.
The purpose of this utility model is achieved through the following technical solutions:
The utility model comprises wind wheel unit, electric motor units and the cabin unit that is arranged at the tower tube, the rotor axle head that stretches out preceding end housing of described electric motor units is connected with the wheel hub of wind wheel unit, the spindle end that stretches out the back end housing is fixed on the cabin of cabin unit, and the stator of electric motor units is connected with electrical network by current transformer.
Described electric motor units comprises main shaft, p-m rotor, stator, shell and break, shell comprises preceding end housing, back end housing and the rotational shell that is connected respectively with both, main shaft places in the shell, and end housing and back end housing before stretch out at two ends, be provided with rotor shaft in the described p-m rotor, rotor shaft is by first, on second Bearing Installation main shaft in the enclosure, and an end stretches out preceding end housing, stator places the shell internal fixation on rotational shell, the brake block of break is fixed on the end housing of back, its brake disc is fixed on the rotor shaft, during work, the rotor shaft of end housing is connected with the wind wheel wheel hub before stretching out, and break is connected with the cabin control cabinet by oil hydraulic pump.Described rotor is a multiple permanent magnet body rotor.Described clutch shaft bearing is a cylindrical roller thrust bearing, and second bearing is the cylindrical hole selfaligning roller bearing.On the end housing of back, also be provided with at least one cooling fan.Be equipped with temperature transducer on electric machine main shaft and first, second bearing, each temperature transducer is connected with the cabin control cabinet respectively.
Described wind wheel unit comprises wheel hub, blade and blade controlling and driving mechanism, wherein each piece blade all has independently controlling and driving mechanism, and be installed on the circumference of hub by its controlling and driving mechanism, described controlling and driving mechanism comprises and becomes the slurry bearing, becomes the slurry motor and become the slurry control cabinet, each piece blade all connects by becoming the slurry bearing change slurry motor corresponding with it, become the slurry motor and link to each other with external power supply by becoming the slurry control cabinet, the signal input part that becomes the slurry control cabinet is connected with far-end network.
Described cabin unit comprises the cabin, the cabin control cabinet, yaw motor, the driftage bearing, driftage brake and be arranged on wind vane and anemoscope on the cabin, four yaw motors evenly place around the cabin, the outer ring gear of yaw motor output shaft end gear and driftage bearing is meshed, the driftage brake disc is fixed on the interior ring of driftage bearing, the cabin is fixed on the driftage brake disc, the cabin control cabinet is fixed in the cabin, be connected with external power grid, temperature transducer in the cabin, wind vane is connected with the signal input part of cabin control cabinet respectively with anemoscope, its signal output part is connected with four yaw motors respectively, and the driftage outer race is fixedlyed connected with the tower tube.Described driftage outer race matches to be connected with and turns round the cable angle transducer, turns round the cable angle transducer and is connected with the cabin control cabinet.
The beneficial effects of the utility model are:
1. the p-m rotor progression of generator is fewer in traditional wind power plant, and it only could be approaching under certain rotating speed, reach rated power.And the generator amature in the utility model partly adopts the multiple permanent magnet rotor, and the progression of its p-m rotor and stator is identical, and the utility model is all selected 78 grades for use, so this motor can reach predetermined power under the slow-speed of revolution.So raise speed without gear-box, directly link to each other with the wind wheel wheel hub, omitted gear-box, not only can alleviate blower fan volume and weight, the cost of removing gear-box from and maintenance program, the life-span and the transformation efficiency of blower fan can also be improved, the rate of fault of noise, minimizing blower fan integral body can also be reduced simultaneously.Make simple in structure.
2. in order to solve the too high problem of temperature in the machine operation process, be equipped with temperature transducer on electric machine main shaft and first, second bearing, with the state in the real-time detection motor rotation, and motor be provided with at least one cooling fan in the back on the end housing, to reach the cooling requirement.
3. each piece blade of wind wheel unit all has independently controlling and driving mechanism, when the blade control system goes wrong, breaks down simultaneously so long as not three, just can have at least a blade to put away the oars, thereby makes wind wheel realize aerodynamic brake.
4. the anemoscope that is connected with the cabin control cabinet is set, to adjust the blade lift angle on the cabin.
5. conventional rack is connected with current transformer by rotor, the electric energy that unit sends directly is connected to the grid after by current transformer, wind speed round is bigger to traditional double-fed generator connecting in parallel with system influence, the rotor of double-fed generator links to each other with current transformer, when wind speed round is low, the power consumption of double-fed generator does not allow than big and current transformer yet, so only just can generate electricity by way of merging two or more grid systems when the parameters such as frequency of the Ac that sends conform to the electrical network specified value, generator speed is had certain requirement.And the stator that directly drives generator in the utility model links to each other with current transformer, and making electric energy that unit sends be converted into frequency through current transformer is that the Ac of 50Hz is connected to the grid, and is not subjected to the restriction of generator speed, less demanding to wind speed round when being incorporated into the power networks.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the local enlarged diagram of Fig. 1.
Fig. 3 is the structural representation of electric motor units among Fig. 1.
Embodiment
The utility model is described in further detail below by embodiment and accompanying drawing.
Embodiment 1: as shown in Figure 1, the utility model comprises tower tube 5, wind wheel unit 4, electric motor units 3 and cabin unit 2, rotor shaft 410 ends that stretch out preceding end housing 409 of described electric motor units 3 are connected with the wheel hub 402 of wind wheel unit 4, main shaft 403 ends that stretch out back end housing 405 are fixed on the cabin 204 of cabin unit 2, and the stator of electric motor units 3 is connected with electrical network by current transformer.
Described wind wheel unit 4 comprises wheel hub 402, blade 401 and blade controlling and driving mechanism, wherein each piece blade 401 all has independently controlling and driving mechanism, and be installed on wheel hub 402 circumference by its controlling and driving mechanism, described controlling and driving mechanism comprises and becomes slurry bearing 403, become slurry motor 405 and become slurry control cabinet 404, each piece blade 401 all connects by becoming the slurry bearing 403 change slurry motor 405 corresponding with it, that is: each piece blade 401 all connects by becoming the slurry bearing 403 change slurry motor 405 corresponding with it, blade 4001 and change slurry motor 405 evenly are installed on wheel hub 402 circumference, become slurry motor 405 and link to each other with external power supply by becoming slurry control cabinet 404, the signal input part that becomes slurry control cabinet 404 is connected with far-end network.
This routine blade 401 is three pieces, change slurry bearing 403 corresponding with it and change slurry motor 405 are 3, three outer shrouds that become slurry bearing 403 evenly are fixed on the wheel hub 402 along circumference, the root of three pieces of blades 401 is separately fixed at three and becomes on the interior ring of starching bearing 2, correspondingly with three blade 401 positions install three respectively and become slurry control cabinets 404 in that wheel hub 402 is inner, the shaft end gear that becomes slurry motor 405 with become the slurry bearing 403 interior gears that encircle and be meshed.Become slurry motor 405 and become the lift angle that slurry bearing 403 interior rings change blade mounted thereto 401 by reversing, wherein become slurry control cabinet 404 and anemoscope 205 communications, its power supply is provided by external power grid, become slurry control cabinet 404 and adjust blade angle, realize the peak output output of generator according to the signal of anemoscope.
As shown in Figure 3, described electric motor units comprises main shaft 303, rotor shaft 310, p-m rotor 308, stator 307, shell and break 304, shell comprises preceding end housing 309, back end housing 305 and the rotational shell 306 that is connected respectively with both, main shaft 303 places in the shell, and end housing 309 and back end housing 305 before stretch out at two ends, its rotor shaft 310 is by first, on second Bearing Installation main shaft 303 in the enclosure, and an end stretches out preceding end housing 309, stator 307 places the shell internal fixation on rotational shell 306, p-m rotor 308 is installed on the rotor shaft 310 in the stator 307, the brake block of break 304 is fixed on the end housing 305 of back, its brake disc is fixed on the rotor shaft 310, during work, the rotor shaft 310 of end housing 309 is connected with the wind wheel wheel hub before stretching out, and break 304 is connected with cabin control cabinet 207 by oil hydraulic pump.
Wherein p-m rotor 308 is a multiple permanent magnet body rotor, and p-m rotor 308 is identical with stator 307 progression, and this example all adopts 78 grades.Clutch shaft bearing 302 is a cylindrical roller thrust bearing, second bearing 311 is the cylindrical hole selfaligning roller bearing, on the end housing 305 of back, also be provided with cooling fan 301, determine the quantity of cooling fan 301 according to working environment and job requirement, be at least 1, this example evenly is provided with 3 cooling fans 301 along back end housing 305 circumference.Electric machine main shaft 303 is a hollow shaft, is equipped with the temperature transducer that is connected with peripheral control unit on electric machine main shaft 303 and first, second bearing, and temperature transducer passes the signal to external sensor, to detect bearing temperature.
As shown in Figure 3, becoming slurry control cabinet 404 required signal cable and power cables in the wheel hub 402 all passes through in electric machine main shaft 303, electric machine main shaft 303 1 ends are fixed on the cabin 203, one end is connected with wheel hub 402, wind wheel wheel hub 402 drives rotor shaft 310 runnings, thereby drive p-m rotor 308 rotations, each root lead in stator 307 coils all also directly produces the sinusoid AC electromotive force at cutting magnetic line, cable on stator 307 is sent to cabin control cabinet 207 with this electric energy again, exports in the electrical network.
Described cabin unit 2 comprises cabin 204, cabin control cabinet 207, four 203,1 driftage bearing 201 of yaw motor, driftage brakes 202 and is arranged on wind vane 205 and anemoscope 206 on the cabin 204.Four yaw motors 203 evenly place cabin 204 around, the outer ring gear of yaw motor 203 output shaft end gears and driftage bearing 201 is meshed, the brake disc of driftage brake 202 is fixed on the interior ring of driftage bearing 201, cabin 204 is fixed on the brake disc of driftage brake 202, cabin control cabinet 207 is fixed in the cabin 204, be connected with external power grid from the input of tower tube 5 bottoms, temperature transducer in the cabin 204, wind vane 205 is connected with the signal input part of cabin control cabinet 207 respectively with anemoscope 206, its signal output part is connected with four yaw motors 203 respectively, and driftage bearing 201 outer shrouds are fixedlyed connected with tower tube 5.
Described driftage bearing 201 outer shrouds match to be connected with and turn round the cable angle transducer, itself and 207 communications of cabin control cabinet, turn round the signal that the cable angle transducer records and be transferred to cabin control cabinet 207, export electrical signal respectively through cabin control cabinet 207 and give yaw motor 203, drive its running.
Working principle of the present utility model:
Before blade 401 starts, when anemoscope 206 records wind speed mean value more than or equal to the incision air speed value and less than the cut-out wind speed value in a period of time, become slurry control cabinet 404 and send signal, change slurry motor 405 will be starched elongation and adjust to maximum lift angle, when the torque that produces in wheel hub 402 axle center when the blast load on the blade 401 exceeds the moment of torsion that wind wheel stiction produces, just entry into service of wheel hub 402.
Within the rated wind speed scope, become slurry control cabinet 404 and will keep blade 401 lift angle maximum values constant.Unit moves under rated power.
The mean wind velocity that records in a period of time when anemoscope 206 is during more than or equal to rated wind speed and less than cut-out wind speed, become that slurry control cabinet 404 will adjust that blade 401 lift angles reduce and and wind speed keep certain corresponding relation, thereby the maintenance unit moves at rated power (1.5MW).
The mean wind velocity that records in a period of time when anemoscope 206 becomes slurry control cabinet 404 and will send signal during more than or equal to cut-out wind speed, and blade 401 lift angles are reduced to minimum value, and unit is out of service, and unit enters guard mode.
Before unit starting or normally in service, when the angle of the wind angle that records when wind vane 205 and wind wheel unit 4 blades, 401 postive directions of unit keeps exceeding setting value within a certain period of time, cabin control cabinet 404 sends signal, unclamp the 203 beginning run-in synchronisms of 202, four yaw motors of driftage brake and adjust wind wheel postive direction aligning wind direction.
When cabin 204 reaches 720 when spending in the rotation of direction continuously, cabin control cabinet 207 sends signal, blade 401 lift angles reduce to minimum value, unclamp driftage brake 202, yaw motor 203 is adjusted blower fan and is rotated 720 degree in the opposite direction continuously, cabin control cabinet 404 will recording signal according to wind vane 205 redefines the wind wheel direction again, becomes slurry control cabinet 404 and also will adjust blade 401 lift angles to respective value according to anemoscope 206 again, and unit begins normal operation.
Claims (9)
1. direct-drive aerogenerator group, comprise the wind wheel unit, electric motor units and the cabin unit that are arranged at the tower tube, it is characterized in that: the rotor axle head that stretches out preceding end housing of described electric motor units is connected with the wheel hub of wind wheel unit, the spindle end that stretches out the back end housing is fixed on the cabin of cabin unit, and the stator of electric motor units is connected with electrical network by current transformer.
2. direct-drive aerogenerator group according to claim 1, described electric motor units comprises main shaft, p-m rotor, stator, shell and break, shell comprises preceding end housing, back end housing and the rotational shell that is connected respectively with both, main shaft places in the shell, and end housing and back end housing before stretch out at two ends, it is characterized in that: be provided with rotor shaft in the described p-m rotor, rotor shaft is by first, on second Bearing Installation main shaft in the enclosure, and an end stretches out preceding end housing, stator places the shell internal fixation on rotational shell, the brake block of break is fixed on the end housing of back, its brake disc is fixed on the rotor shaft, during work, the rotor shaft of end housing is connected with the wind wheel wheel hub before stretching out, and break is connected with the cabin control cabinet by oil hydraulic pump.
3. direct-drive aerogenerator group according to claim 2 is characterized in that: described rotor is a multiple permanent magnet body rotor.
4. direct-drive aerogenerator group according to claim 2 is characterized in that: described clutch shaft bearing is a cylindrical roller thrust bearing, and second bearing is the cylindrical hole selfaligning roller bearing.
5. direct-drive aerogenerator group according to claim 2 is characterized in that: also be provided with at least one cooling fan on the end housing of described back.
6. direct-drive aerogenerator group according to claim 2 is characterized in that: be equipped with temperature transducer on described electric machine main shaft and first, second bearing, each temperature transducer is connected with the cabin control cabinet respectively.
7. direct-drive aerogenerator group according to claim 1, it is characterized in that: described wind wheel unit comprises wheel hub, blade and blade controlling and driving mechanism, wherein each piece blade all has independently controlling and driving mechanism, and be installed on the circumference of hub by its controlling and driving mechanism, described controlling and driving mechanism comprises and becomes the slurry bearing, become the slurry motor and become the slurry control cabinet, each piece blade all connects by becoming the slurry bearing change slurry motor corresponding with it, become the slurry motor and link to each other with external power supply by becoming the slurry control cabinet, the signal input part that becomes the slurry control cabinet is connected with far-end network.
8. direct-drive aerogenerator group according to claim 1, it is characterized in that: described cabin unit comprises the cabin, the cabin control cabinet, yaw motor, the driftage bearing, driftage brake and be arranged on wind vane and anemoscope on the cabin, four yaw motors evenly place around the cabin, the outer ring gear of yaw motor output shaft end gear and driftage bearing is meshed, the driftage brake disc is fixed on the interior ring of driftage bearing, the cabin is fixed on the driftage brake disc, the cabin control cabinet is fixed in the cabin, be connected with external power grid, temperature transducer in the cabin, wind vane is connected with the signal input part of cabin control cabinet respectively with anemoscope, its signal output part is connected with four yaw motors respectively, and the driftage outer race is fixedlyed connected with the tower tube.
9. direct-drive aerogenerator group according to claim 8 is characterized in that: described driftage outer race matches to be connected with and turns round the cable angle transducer, turns round the cable angle transducer and is connected with the cabin control cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202037575U CN201513295U (en) | 2009-09-29 | 2009-09-29 | Direct-drive wind generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202037575U CN201513295U (en) | 2009-09-29 | 2009-09-29 | Direct-drive wind generator set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201513295U true CN201513295U (en) | 2010-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202037575U Expired - Fee Related CN201513295U (en) | 2009-09-29 | 2009-09-29 | Direct-drive wind generator set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201513295U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951063A (en) * | 2010-08-05 | 2011-01-19 | 三一电气有限责任公司 | Direct driven wind generator |
| CN101839218B (en) * | 2009-09-29 | 2013-06-26 | 沈阳华创风能有限公司 | Direct-drive wind generating set |
| CN104047805A (en) * | 2013-03-13 | 2014-09-17 | 李�杰 | Horizontal axis and vertical axis universal wind turbine device |
-
2009
- 2009-09-29 CN CN2009202037575U patent/CN201513295U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839218B (en) * | 2009-09-29 | 2013-06-26 | 沈阳华创风能有限公司 | Direct-drive wind generating set |
| CN101951063A (en) * | 2010-08-05 | 2011-01-19 | 三一电气有限责任公司 | Direct driven wind generator |
| CN104047805A (en) * | 2013-03-13 | 2014-09-17 | 李�杰 | Horizontal axis and vertical axis universal wind turbine device |
| CN104047805B (en) * | 2013-03-13 | 2017-06-30 | 李�杰 | A kind of trunnion axis and the general wind generator device of vertical axis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IP01 | Partial invalidation of patent right |
Commission number: 5W101587 Conclusion of examination: On the basis of the claim 1-8 submitted by the patent holder in April 30, 2011, the claim 1 is invalid and the patent right of the claim 2-8 is valid. Decision date of declaring invalidation: 20110819 Decision number of declaring invalidation: 17096 Denomination of utility model: Direct drive type wind turbine generator system Granted publication date: 20100623 Patentee: Shenyang China Creative Wind Energy Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20180929 |