CN105971822A - Pneumatic balance regulating method, pneumatic balance regulating system and wind driven generator - Google Patents
Pneumatic balance regulating method, pneumatic balance regulating system and wind driven generator Download PDFInfo
- Publication number
- CN105971822A CN105971822A CN201610387159.2A CN201610387159A CN105971822A CN 105971822 A CN105971822 A CN 105971822A CN 201610387159 A CN201610387159 A CN 201610387159A CN 105971822 A CN105971822 A CN 105971822A
- Authority
- CN
- China
- Prior art keywords
- blade
- stress
- equivalent stress
- foil gauge
- predetermined value
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 45
- 230000001105 regulatory effect Effects 0.000 title claims abstract 6
- 239000011888 foil Substances 0.000 claims description 57
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/04—Automatic control; Regulation
- F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/329—Azimuth or yaw angle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/40—Type of control system
- F05B2270/404—Type of control system active, predictive, or anticipative
-
- 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 pneumatic balance regulating system comprising a first strain gauge, a second strain gauge, a third strain gauge, a data processing unit and a control unit. The data processing unit is electrically connected with the first strain gauge, the second strain gauge, the third strain gauge and the control unit; the first strain gauge is used for detecting strain of a first blade; the second strain gauge is used for detecting strain of a second blade; the third strain gauge is used for detecting strain of a third blade; the data processing unit is used for processing and comparing data fed back by the first strain gauge, the second strain gauge, the third strain gauge; and the control unit controls a variable-pitch mechanism to act according to a comparison result. By means of the pneumatic balance regulating system, a wind driven generator can regulate the variable-pitch angles of the blades in real time according to the stress condition, and therefore the three blades can achieve the pneumatic balance state. Besides, the invention further discloses a pneumatic balance regulating method and the wind driven generator.
Description
Technical field
The present invention relates to wind generating technology, be specifically related to a kind of air-balance control method, air-balance tune
Joint system and wind-driven generator.
Background technology
The most harsh along with the day by day exhausted of tradition fossil energy and environmental protection, wind-power electricity generation becomes the energy
One of the important channel in source.Wind-driven generator is the capital equipment of wind-power electricity generation, and it generally includes tower, machine
Cabin (also referred to as tower head) and three piths of wind wheel, cabin is arranged at atop a tower, is provided with biography in cabin
The parts such as dynamic component, electromotor and control element, wind wheel includes wheel hub, blade pitch device, kuppe and three
Blade, blade pitch device is arranged in wheel hub, and the root of blade is connected with blade pitch device, wheel hub and drive disk assembly
Connecting, drive disk assembly is connected with the power shaft of electromotor；During operation, wind-force orders about hub rotation, driving section
The rotary motion that wheel hub is inputted by part carries out passing to electromotor after speedup fall is turned round, and electromotor converts kinetic energy into
Electric energy is also exported to electrical network by circuit.
Owing to being difficult to determine that the position of three blades is the most all installed correctly in the fabrication process, cause easily going out
The problem of the discontinuity equalization of existing three blades, finally improves the maintenance cost of wind-driven generator.
Summary of the invention
In view of this, the present invention proposes a kind of air-balance for wind-driven generator and regulates system, utilizes gas
Dynamic balancing regulation system according to the angle of practical situation regulation blade, and then can ensure three vane stress phases
To equilibrium.On this basis, the present invention also proposes a kind of wind-power electricity generation with this air-balance regulation system
Machine.It addition, the present invention also proposes a kind of air-balance control method for wind-driven generator.
As first aspect, the present invention proposes a kind of air-balance for wind-driven generator and regulates system；Should
Air-balance regulation system includes the first foil gauge, the second foil gauge, the 3rd foil gauge, data processing unit
And control unit, described data processing unit respectively with the first foil gauge, the second foil gauge, the 3rd foil gauge,
Control unit electrically connects；Described first foil gauge is arranged in the root of the first blade, for detection the first blade
Stress；Described second foil gauge is arranged in the root of the second blade, for the stress of detection the second blade；
Described 3rd foil gauge is arranged in the root of third blade, for detecting the stress of third blade；Described data
Processing unit is for carrying out processing also by the data that the first foil gauge, the second foil gauge and the 3rd foil gauge feed back
Comparison, described control unit controls blade pitch device action according to comparison result.
Preferably, the data handling procedure of described data processing unit includes: gathered by the first foil gauge should
Power is converted into the first equivalent stress, is the second equivalent stress by the stress conversion of the second foil gauge collection, by
The stress conversion of three foil gauge collections is third equivalent stress, and calculates the first equivalent stress, the second equivalence
Stress and the meansigma methods of third equivalent stress.
Preferably, the first equivalent stress, the second equivalent stress, third equivalent are answered by described data processing unit
Power is compared with meansigma methods respectively, and when certain equivalent stress is more than the first predetermined value, described blade pitch device drives
Make the blade corresponding with this equivalent stress reduce and become vane angle；When certain equivalent stress is less than the second predetermined value, institute
Stating blade pitch device and order about the blade increase change vane angle corresponding with this equivalent stress, wherein, the second predetermined value ＜ is put down
Average ＜ the first predetermined value.
Preferably, described first predetermined value is 1.1 times of meansigma methods, and described second predetermined value is meansigma methods
0.9 times.
As second aspect, the present invention proposes a kind of wind-driven generator；This wind-driven generator includes tower, machine
The air-balance regulation system of cabin, wind wheel and above-mentioned any one.
The air-balance regulation system that the present invention proposes includes the first foil gauge, the second foil gauge, the 3rd strain
Sheet, data processing unit and control unit, described data processing unit respectively with the first foil gauge, second should
Become sheet, the 3rd foil gauge, control unit electrical connection；Described first foil gauge is arranged in the root of the first blade,
For detecting the stress of the first blade；Described second foil gauge is arranged in the root of the second blade, is used for detecting
The stress of the second blade；Described 3rd foil gauge is arranged in the root of third blade, is used for detecting third blade
Stress；Described data processing unit is for feeding back the first foil gauge, the second foil gauge and the 3rd foil gauge
Data carry out process and comparison, described control unit according to comparison result control blade pitch device action.Work
Time, three foil gauges can press predetermined period with the stress of each root of blade of Real-time Collection, data processing unit
The stress data that foil gauge feeds back is converted to equivalent stress, then that three equivalent stress are average with theirs
Value contrasts, if the equivalent stress of three blades is all in the range of reasonably, then and three blade bases of explanation
The state of air-balance has been reached in basis；If certain equivalent stress exceeds rational scope, then illustrate to exist
Pneumatic unbalanced problem, now, control unit controls blade pitch device action, and blade pitch device will be with this equivalence
The change vane angle of the blade that stress is corresponding is turned down or is tuned up so that within the scope of this equivalent stress reaches reasonably.
By above-mentioned air-balance regulation system, wind-driven generator can be adjusted in real time according to actual loading situation
The change vane angle of completeblade, and then make three blades reach the state of air-balance；Finally, wind-power electricity generation is improved
The force-bearing situation of machine, reduces the maintenance cost of wind-driven generator and increases the service life.
As the third aspect, the present invention proposes a kind of air-balance control method for wind-driven generator, should
Air-balance control method comprises the following steps:
S1: detect the stress of the root of each blade；
S2: be equivalent stress by the stress conversion of each root of blade, and calculate the flat of all equivalent stress
Average；
S3: each equivalent stress is compared with meansigma methods；
S4: when certain equivalent stress is more than the first predetermined value, makes the blade corresponding with this equivalent stress reduce and becomes
Vane angle；When certain equivalent stress is less than the second predetermined value, makes the blade corresponding with this equivalent stress increase and become oar
Angle, wherein, second predetermined value ＜ meansigma methods ＜ the first predetermined value.
Preferably, described first predetermined value is 1.1 times of meansigma methods, and described second predetermined value is meansigma methods
0.9 times.
Similar to above-mentioned air-balance regulation system, this air-balance control method can be according to actual loading
Situation adjusts the change vane angle of blade in real time, and then makes three blades reach the state of air-balance；Finally, change
The force-bearing situation of kind wind-driven generator, reduces the maintenance cost of wind-driven generator and increases the service life.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, and the present invention shows
Meaning property embodiment and explanation thereof are used for explaining the present invention, are not intended that inappropriate limitation of the present invention.At accompanying drawing
In:
The structure diagram of the wind wheel of the wind-driven generator that Fig. 1 provides for the specific embodiment of the invention；
The partial structurtes view of the blade that Fig. 2 provides for the specific embodiment of the invention；
The workflow diagram of the air-balance regulation system that Fig. 3 provides for the specific embodiment of the invention.
Description of reference numerals:
1 wheel hub 2 first blade 3 second blade 4 third blade
5 first detection lug 6 second detection lugs
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment
Can be mutually combined.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Generally, wind-driven generator includes tower, cabin and three piths of wind wheel, and cabin is arranged at tower
Top, is provided with drive disk assembly, electromotor and controls the parts such as element in cabin, wind wheel include wheel hub 1,
Blade pitch device, kuppe and three blades, blade pitch device is arranged in wheel hub 1, the root of blade and change oar
Mechanism connects, and wheel hub 1 is connected with drive disk assembly, and drive disk assembly is connected with the power shaft of electromotor；During operation,
Wind-force orders about wheel hub 1 and rotates, and the rotary motion that wheel hub 1 is inputted by drive disk assembly carries out transmitting after speedup fall is turned round
To electromotor, electromotor is converted kinetic energy into electric energy and is exported to electrical network by circuit.
In order to solve the air-balance problem of blade, the specific embodiment of the invention proposes a kind of air-balance and adjusts
Joint system, this air-balance regulation system includes the first foil gauge, the second foil gauge, the 3rd foil gauge, number
According to processing unit and control unit, data processing unit respectively with the first foil gauge, the second foil gauge, the 3rd
Foil gauge, control unit electrically connect；As it is shown in figure 1, the first blade the 2, second blade 3 and third blade 4
It is evenly arranged centered by wheel hub 1, in order to detect the stress of blade, as in figure 2 it is shown, at each blade
The position that root is i.e. connected with wheel hub 1 near blade is disposed with foil gauge, and each foil gauge includes circumferentially
The first detection lug 5 and the second axial arranged detection lug 6, concrete arrangement is: the first foil gauge cloth
Put the root at the first blade 2, for the stress of detection the first blade 2；Second foil gauge is arranged in second
The root of blade 3, for the stress of detection the second blade 3；3rd foil gauge is arranged in third blade 4
Root, for detecting the stress of third blade 4；Data processing unit for by the first foil gauge, second should
The data becoming sheet and the 3rd foil gauge feedback carry out processing and comparison, and control unit controls to become according to comparison result
Paddle mechanism action.
As it is shown on figure 3, during operation, blade orders about lower rotation at wind-force, each foil gauge should by detect
Force feedback is to data processing unit, and the stress conversion of the first foil gauge collection is first etc. by data processing unit
Efficacy, is the second equivalent stress by the stress conversion of the second foil gauge collection, is gathered by the 3rd foil gauge
Stress conversion is third equivalent stress, and calculates the first equivalent stress, the second equivalent stress and third equivalent
The meansigma methods of stress；Then, data processing unit is by the first equivalent stress, the second equivalent stress, third
Efficacy is compared with meansigma methods respectively.
If the equivalent stress of three blades is all in the range of reasonably, then three blades of explanation substantially achieve
The state of air-balance.If certain equivalent stress exceeds rational scope, then there is pneumatic injustice in explanation
The problem of weighing apparatus, now, control unit controls blade pitch device action, and blade pitch device will be relative with this equivalent stress
The change vane angle of the blade answered is turned down or is tuned up so that within the scope of this equivalent stress reaches reasonably；Specifically,
When certain equivalent stress is more than the first predetermined value, blade pitch device orders about the blade corresponding with this equivalent stress and reduces
Become vane angle；When certain equivalent stress is less than the second predetermined value, blade pitch device orders about corresponding with this equivalent stress
Blade increases and becomes vane angle, wherein, second predetermined value ＜ meansigma methods ＜ the first predetermined value.During actual application, the
One predetermined value and the second predetermined value can be adjusted according to meansigma methods, such as: the first predetermined value is meansigma methods
1.1 times, the second predetermined value is 0.9 times of meansigma methods, i.e. equivalent stress value 0.9 times of meansigma methods to 1.1
Being rational between Bei, super going beyond the scope can be regarded as there is pneumatic imbalance problem.
On this basis, the specific embodiment of the invention also proposes a kind of wind-driven generator；This wind-driven generator bag
Include tower, cabin, wind wheel and above-mentioned air-balance regulation system.By above-mentioned air-balance regulation it is
System, wind-driven generator can adjust the change vane angle of blade in real time, and then make three leaves according to actual loading situation
Sheet reaches the state of air-balance；Finally, improve the force-bearing situation of wind-driven generator, reduce wind-driven generator
Maintenance cost and increase the service life.
It addition, the specific embodiment of the invention also proposes a kind of air-balance control method for wind-driven generator,
This air-balance control method comprises the following steps:
S1: detect the stress of the root of each blade；
S2: be equivalent stress by the stress conversion of each root of blade, and calculate the flat of all equivalent stress
Average；
S3: each equivalent stress is compared with meansigma methods；
S4: when certain equivalent stress is more than the first predetermined value, makes the blade corresponding with this equivalent stress reduce and becomes
Vane angle；When certain equivalent stress is less than the second predetermined value, makes the blade corresponding with this equivalent stress increase and become oar
Angle, and 1.1 times that the first predetermined value is meansigma methods, the second predetermined value is 0.9 times of meansigma methods.
This air-balance control method can adjust the change vane angle of blade in real time according to actual loading situation, and then
Three blades are made to reach the state of air-balance；Finally, improve the force-bearing situation of wind-driven generator, reduce wind
The maintenance cost of power generator also increases the service life.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in this
Within bright protection domain.
Claims (7)
1. the air-balance regulation system for wind-driven generator, it is characterised in that include the first strain
Sheet, the second foil gauge, the 3rd foil gauge, data processing unit and control unit, described data processing unit
Electrically connect with the first foil gauge, the second foil gauge, the 3rd foil gauge, control unit respectively；Described first should
Become sheet and be arranged in the root of the first blade (2), for the stress of detection the first blade (2)；Described second
Foil gauge is arranged in the root of the second blade (3), for the stress of detection the second blade (3)；Described
Three foil gauges are arranged in the root of third blade (4), are used for detecting the stress of third blade (4)；Described
Data processing unit is at the data the first foil gauge, the second foil gauge and the 3rd foil gauge fed back
Reason comparison, described control unit controls blade pitch device action according to comparison result.
Air-balance the most according to claim 1 regulation system, it is characterised in that described data process
The data handling procedure of unit includes: be the first equivalent stress by the stress conversion of the first foil gauge collection, will
The stress conversion of the second foil gauge collection is the second equivalent stress, by the stress conversion of the 3rd foil gauge collection is
Third equivalent stress, and calculate the average of the first equivalent stress, the second equivalent stress and third equivalent stress
Value.
Air-balance the most according to claim 2 regulation system, it is characterised in that described data process
First equivalent stress, the second equivalent stress, third equivalent stress are compared by unit respectively with meansigma methods,
When certain equivalent stress is more than the first predetermined value, described blade pitch device orders about the blade corresponding with this equivalent stress
Reduce and become vane angle；When certain equivalent stress is less than the second predetermined value, described blade pitch device orders about and such effect
The blade increase change vane angle that power is corresponding, wherein, second predetermined value ＜ meansigma methods ＜ the first predetermined value.
Air-balance the most according to claim 3 regulation system, it is characterised in that described first makes a reservation for
Value is 1.1 times of meansigma methods, and described second predetermined value is 0.9 times of meansigma methods.
5. a wind-driven generator, it is characterised in that include tower, cabin, wind wheel and claim 1
System is regulated to the air-balance described in 4 any one.
6. the air-balance control method for wind-driven generator, it is characterised in that comprise the following steps:
S1: detect the stress of the root of each blade；
S2: be equivalent stress by the stress conversion of each root of blade, and calculate the flat of all equivalent stress
Average；
S3: each equivalent stress is compared with meansigma methods；
S4: when certain equivalent stress is more than the first predetermined value, makes the blade corresponding with this equivalent stress reduce and becomes
Vane angle；When certain equivalent stress is less than the second predetermined value, makes the blade corresponding with this equivalent stress increase and become oar
Angle, wherein, second predetermined value ＜ meansigma methods ＜ the first predetermined value.
Air-balance control method the most according to claim 6, it is characterised in that described first makes a reservation for
Value is 1.1 times of meansigma methods, and described second predetermined value is 0.9 times of meansigma methods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610387159.2A CN105971822B (en) | 2016-06-02 | 2016-06-02 | Air-balance adjusting method, air-balance regulating system and wind-driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610387159.2A CN105971822B (en) | 2016-06-02 | 2016-06-02 | Air-balance adjusting method, air-balance regulating system and wind-driven generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105971822A true CN105971822A (en) | 2016-09-28 |
| CN105971822B CN105971822B (en) | 2018-08-17 |
Family
ID=57010370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610387159.2A Active CN105971822B (en) | 2016-06-02 | 2016-06-02 | Air-balance adjusting method, air-balance regulating system and wind-driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105971822B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575346A (en) * | 2017-09-07 | 2018-01-12 | 许继集团有限公司 | A kind of pneumatic unbalance detection of wind-driven generator group wind-wheel and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4161658A (en) * | 1978-06-15 | 1979-07-17 | United Technologies Corporation | Wind turbine generator having integrator tracking |
| US4297076A (en) * | 1979-06-08 | 1981-10-27 | Lockheed Corporation | Wind turbine |
| US20090246019A1 (en) * | 2007-05-04 | 2009-10-01 | Mark Volanthen | Wind turbine monitoring |
| CN202117846U (en) * | 2011-06-07 | 2012-01-18 | 浙江运达风电股份有限公司 | Independent variable-pitch control device for large wind turbines |
-
2016
- 2016-06-02 CN CN201610387159.2A patent/CN105971822B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4161658A (en) * | 1978-06-15 | 1979-07-17 | United Technologies Corporation | Wind turbine generator having integrator tracking |
| US4297076A (en) * | 1979-06-08 | 1981-10-27 | Lockheed Corporation | Wind turbine |
| US20090246019A1 (en) * | 2007-05-04 | 2009-10-01 | Mark Volanthen | Wind turbine monitoring |
| CN202117846U (en) * | 2011-06-07 | 2012-01-18 | 浙江运达风电股份有限公司 | Independent variable-pitch control device for large wind turbines |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575346A (en) * | 2017-09-07 | 2018-01-12 | 许继集团有限公司 | A kind of pneumatic unbalance detection of wind-driven generator group wind-wheel and device |
| CN107575346B (en) * | 2017-09-07 | 2019-08-13 | 许继集团有限公司 | A kind of pneumatic unbalance detection of wind-driven generator group wind-wheel and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105971822B (en) | 2018-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1120297C (en) | Variable speed wind turbine generator | |
| DK1788237T3 (en) | Method and apparatus for wind turbine braking | |
| US7352075B2 (en) | Methods and apparatus for controlling rotational speed of a rotor | |
| EP2108825B1 (en) | System and method for reducing rotor loads in a wind turbine upon detection of blade-pitch failure and loss of counter-torque | |
| EP2644888A2 (en) | Control system and method for avoiding overspeed of a wind turbine | |
| US9726147B2 (en) | System and method for stopping the operation of wind turbine | |
| US9093928B2 (en) | Methods and systems for controlling a power converter | |
| CN103023062B (en) | For operating the method and system of generating and transmission system | |
| EP2079927A1 (en) | Wind turbine with blade pitch control to compensate for wind shear and wind misalignment | |
| EP3189231A1 (en) | Improvements relating to the determination of rotor imbalances in a wind turbine | |
| WO2010061255A2 (en) | Active blade pitch control for reduction of wind turbine noise or loads | |
| CN102926930A (en) | Independent variable pitch control method of wind power generation system | |
| EP2743501B1 (en) | Control device for wind power plant and control method for wind power plant | |
| CN107630785B (en) | Wind turbines Protection control system under one kind of multiple operating conditions | |
| DK201470481A1 (en) | Improvements relating to wind turbine operation | |
| CN103835881B (en) | Independent pitch system based on electronic effective damping and change oar method | |
| CN103257315A (en) | Wind generating set master control system and motor-driven pitch changing system testing device | |
| EP2963286A1 (en) | Windturbine and method for stopping the same | |
| EP2957767B1 (en) | Methods and systems to operate a wind turbine | |
| CN105971822A (en) | Pneumatic balance regulating method, pneumatic balance regulating system and wind driven generator | |
| EP3892850A1 (en) | System and method for mitigating loads acting on a rotor blade of a wind turbine | |
| US8038395B2 (en) | Pulsed torque control of wind turbine pitch systems | |
| CN105736247B (en) | Wind turbines | |
| CN202853913U (en) | Wind generating set electric variable pitch system loading test bench | |
| KR101606141B1 (en) | Automatic pitch control apparatus for wind power generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 102206 31 Industrial Park, North Qing Road, Beijing, Changping District Patentee after: Sany Heavy Energy Co.,Ltd. Address before: 102206 31 Industrial Park, North Qing Road, Beijing, Changping District Patentee before: SANY HEAVY ENERGY Co.,Ltd. Address after: 102206 31 Industrial Park, North Qing Road, Beijing, Changping District Patentee after: SANY HEAVY ENERGY Co.,Ltd. Address before: 102206 31 Industrial Park, North Qing Road, Beijing, Changping District Patentee before: SANY HEAVY ENERGY EQUIPMENT Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |