CN106224161A - Independent pitch system and change oar method with controller strategy - Google Patents
Independent pitch system and change oar method with controller strategy Download PDFInfo
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- CN106224161A CN106224161A CN201610574747.7A CN201610574747A CN106224161A CN 106224161 A CN106224161 A CN 106224161A CN 201610574747 A CN201610574747 A CN 201610574747A CN 106224161 A CN106224161 A CN 106224161A
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000004891 communication Methods 0.000 claims abstract description 14
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims description 8
- 238000004146 energy storage Methods 0.000 claims description 7
- 210000003746 feather Anatomy 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000000452 restraining effect Effects 0.000 claims description 3
- 238000012795 verification Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 241001075561 Fioria Species 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 8
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000010248 power generation Methods 0.000 description 1
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Classifications
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- 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
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- 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
- F05B2270/10—Purpose of the control system
- F05B2270/17—Purpose of the control system to avoid excessive deflection of the blades
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- 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
- F05B2270/304—Spool rotational speed
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- 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
- F05B2270/335—Output power or torque
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- 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
- F05B2270/60—Control system actuates through
- F05B2270/602—Control system actuates through electrical actuators
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- 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
- F05B2270/70—Type of control algorithm
- F05B2270/707—Type of control algorithm fuzzy logic
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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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
A kind of independent pitch system with controller strategy and change oar method, belong to wind-powered electricity generation industry technology field.Including wind power generating set master controller, Variable-pitch Controller and three groups of servo-drivers, stand-by power supply, pitch motor, encoder and the limit switch of corresponding blade, Variable-pitch Controller respectively with wind power generating set master controller and three servo-driver communications, each servo-driver connects pitch motor, motor encoder, stand-by power supply and limit switch respectively, motor encoder is arranged on the tail end of pitch motor, and angular encoder engages linkage by prototype gear with blade bearing internal tooth.The present invention can realize independent pitch function by Variable-pitch Controller; error diagnosis, status monitoring, lightning protection, battery management are realized safeguard protection; the fatigue load of reduction fan blade that can not only be suitable; extend the service life of unit; and control simple and reliable; need not the too much hardware of additional, cost is relatively low, and safety is higher.
Description
Technical field
The invention belongs to wind-powered electricity generation industry technology field, be specifically related to a kind of independent pitch system with controller strategy
And become oar method.
Background technology
Wind-power electricity generation develops into, the 1980s, and seldom, technology is the most not mature enough in wind-driven generator installation,
To middle nineteen nineties, Global Wind Power Industry technology achieves the development advanced by leaps and bounds, design, and manufacturing technology reaches its maturity, and produces
Product enter commercialization stage, and power grade, from tens kilowatts to hundreds of kilowatt, gradually develops into million grades.
External wind-driven generator the earliest mainly uses electronic fixed pitch system.For electronic fixed pitch wind-driven generator
Group, high at the power coefficient of low wind speed section, and when wind speed is close to rated point, power coefficient starts people's amplitude and declines,
At this moment along with the rising of wind speed, power rise oneself ease up, and after having crossed rated point, blade has started to stall, and wind speed raises, power
Decline.So electronic fixed pitch wind power generating set is the highest to wind energy utilization efficiency.
Along with the most ripe of wind power generation industry technology and development, the superiority of electric pitch-changing wind-driven generator more comes
The most prominent: wind energy conversion system reliability of operation has had and is greatly improved；At present, single-machine capacity is increasing, the other unit of MW class
Occupying main force position, independent pitch has had become as the development trend of wind-powered electricity generation away from technology, the mode of independent pitch speed governing for
Capture wind energy efficiency, it is thus achieved that optimum capacity output propose higher requirement, the most just can occupy wind-driven generator leadingly
Position.
Summary of the invention
For the technical problem of above-mentioned existence, the present invention provides a kind of independent pitch system with controller strategy and change
Oar method.It uses pitch control device to control the variable pitch driver of three blades, and variable pitch driver regulates propeller pitch angle according to wind speed,
Ensure that impeller captures maximal wind-energy, each blade is self contained function, it is ensured that the safety of blade.
The technical solution used in the present invention is as follows:
A kind of independent pitch system with controller strategy, including wind power generating set master controller, feather control
Device processed and three groups of servo-drivers, stand-by power supply, pitch motor, encoder and stopping means, the variable pitch control of corresponding blade
Device respectively with wind power generating set master controller and three servo-driver communications, each servo-driver connects change oar respectively
Motor, motor encoder, stand-by power supply and stopping means, motor encoder is arranged on the tail end of pitch motor, angular encoder
It is connected with blade bearing.
Further, described stopping means is three groups of limit switches, and often group limit switch is respectively arranged at each blade and turns
91 degree of axle and 94 degree of positions, control blade and forward 91 degree of restraining position to, when 91 degree when pitch-controlled system performs emergency feathering order
When limit switch lost efficacy, 94 degree of limit switches cut off battery power supply, it is ensured that the safe stall of blade.
Further, described stand-by power supply is made up of energy-storage travelling wave tube and charger, when main power source generation power-off fault is
System power supply, makes the feather position that blade is driven into 90 ° by pitch-controlled system from 0 °.
Further, described energy-storage travelling wave tube is accumulator or super capacitor.
Further, described angular encoder engages linkage by prototype gear with blade bearing internal tooth.
Further, described pitch motor is brushless motor, sensing asynchronous machine, brshless DC motor or permanent-magnet synchronous
Motor.
The present invention is with the change oar method of the independent pitch system of controller strategy, and master controller is according to generator operation
Realtime power and rotation speed of fan, pitch position with become oar speed and be sent to Variable-pitch Controller, pitch control device receives main
Position command that control control chamber sends and speed command, and position and speed are sent respectively to three servo driver drives hold
Row mechanism carries out becoming oar action, and regulation becomes oar propeller pitch angle, and the position of motor encoder real time record electric machine rotation sends to servo
Driver, is sent to pitch control device by servo-driver, angular encoder record fan blade turned position, and by this position
Being sent to pitch control device, pitch control device carries out verification by logical judgment and compares, to the motor encoder position gathered, angle
Degree encoder position carries out record in real time, and records the input/output signal of each sharf, and each record value exceeds original start
During fault value, pitch control device is sent to master controller fault message, ensures that becoming oar propeller pitch angle exists by master controller
0 °～90 ° of scopes rotations, Variable-pitch Controller and master controller real-time communication, monitoring becomes oar oneself state, pitch control device handle
Operation conditions feeds back to blower fan master control control chamber, execution emergency feathering action of breaking down.
Further, described Variable-pitch Controller and the real-time communication of master controller, be communication based on Canopen association
View.
The invention has the beneficial effects as follows:
The present invention can realize independent pitch function by Variable-pitch Controller, protects error diagnosis, status monitoring, lightning protection
Protect, battery management realizes safeguard protection, the fatigue load of reduction fan blade that can not only be suitable, extends the use longevity of unit
Life, and control simple and reliable, it is not necessary to the too much hardware of additional, cost is relatively low, and safety is higher.
Accompanying drawing explanation
Fig. 1 is present configuration block diagram.
Fig. 2 is control flow chart of the present invention.
In figure: 1 is master control control chamber, and 2 is slip ring, and 3 is Variable-pitch Controller, 4,5,6 for becoming oar servo-driver, and 7,8,
9 is super capacitor module, and 10,11,12 is pitch motor, and 13,16,19 is 91 degree of limit switches, 14,17,20 be 94 degree spacing
Switch, 15,18,21 is angular encoder, and 22,23,24 is motor encoder.
Detailed description of the invention:
Describe the present invention with embodiment below in conjunction with the accompanying drawings.
Embodiment: as it is shown in figure 1, a kind of independent pitch system with controller strategy of the present invention, including wind-power electricity generation
Unit master controller, Variable-pitch Controller and three groups of servo-drivers, stand-by power supply, pitch motor, codings of corresponding blade
Device and stopping means, Variable-pitch Controller respectively with wind power generating set master controller and three servo-driver communications, often
Individual servo-driver connects pitch motor, motor encoder, stand-by power supply and stopping means respectively, and motor encoder is arranged on change
The tail end of oar motor, angular encoder is connected with blade bearing.
Variable-pitch Controller is the maincenter of pitch-controlled system, is responsible for and wind power generating set master controller and servo-driver
Communication, and the function such as temperature inspection and control, distribution management, monitoring protection, theft-resistant link chain and man-machine interaction.Externally by sliding
Ring is communicatively coupled with blower fan master control control chamber, internally controls 3 servo-drivers (Pitch Master) and then controls leaf
The rotation of sheet.From security consideration, Variable-pitch Controller logically ensures safeguarding or be only capable of a leaf under repairing state
Sheet leaves feather position.
As in figure 2 it is shown, the instruction that servo-driver sends according to pitch control device (PLC), drive motor to rotate, pass through
After reductor, band moving vane rotates, and completes the servo antrol to blade angle.Pitch-controlled system generally use position ring, speed ring,
The Three-loop control mode of electric current loop.According to the difference of position ring closed loop location, servo-driver function can be divided into position servo
Control and Speed servo control two class.
Stand-by power supply is made up of energy-storage travelling wave tube and charger.Stand-by power supply need to be system when main power source generation power-off fault
Power supply, makes the feather position that blade is driven into 90 ° by pitch-controlled system from 0 °.For the consideration to working environment, energy-storage travelling wave tube must
Must non-maintaining, can be inverted, when rotating with blade without leakage, and must be fulfilled for pitch-controlled system to the aspect such as temperature range, life-span
Requirement, generally uses accumulator or super capacitor as energy-storage travelling wave tube.
Pitch motor is to become the final executive component of oar action, its characteristic performance important to pitch-controlled system.
In pitch-controlled system, adoptable motor mainly has 4 kinds: brushed DC motor, sensing asynchronous machine, brshless DC motor and forever
Magnetic-synchro motor.
Motor encoder is arranged on the tail end of pitch motor, and described angular encoder is positioned at by blade bearing internal tooth, passes through
Prototype gear engages linkage with blade bearing internal tooth, all for recording pitch position data.
Described stopping means is three groups of limit switches, often group limit switch be respectively arranged at 91 the degree of each blade rotor with
94 degree of positions, control blade and forward 91 degree of restraining position to, when 91 degree of limit switches lose when pitch-controlled system performs emergency feathering order
During effect, 94 degree of limit switches (redundancy limit switch) cut off battery power supply, it is ensured that the safe stall of blade.
The control method of the described independent pitch system with controller strategy, comprises the steps:
Master control control chamber is according to the realtime power of generator operation and rotation speed of fan, pitch position with become oar speed and send
To Variable-pitch Controller, pitch control device receives position command and the speed command that master control control chamber sends, and by position and speed
Degree is sent respectively to three servo driver drives actuators and carries out becoming oar action, and regulation becomes oar propeller pitch angle, motor encoder
The position of real time record electric machine rotation sends to servo-driver, servo-driver be sent to pitch control device, angular coding
Device record fan blade turned position, and this position is sent to pitch control device, pitch control device is carried out by logical judgment
Verification is compared, and carries out the motor encoder position gathered, angular encoder position in real time record, and records each sharf
Input/output signal, such as main electric switch, charger switch, thunder-prevention switch feedback, in-cabinet temperature etc., each record value in sharf cabinet
During beyond original start fault value, it may be assumed that the motor encoder of pitch control device record, angular encoder not initial range 0 °～
90 ° of operations, when axle cabinet switch feedback is not initial value, axle cabinet temperature occurs higher than setting the fault messages such as alarming value, becomes oar control
Device processed is sent to master controller fault message, ensures that becoming oar propeller pitch angle rotates at 0 °～90 ° of scopes by master controller,
Variable-pitch Controller and master controller real-time communication, monitoring becomes oar oneself state, and pitch control device feeds back to wind operation conditions
Machine master controller, execution emergency feathering action of breaking down.
Variable-pitch Controller and the real-time communication of master controller, be that it is in change oar based on a kind of Canopen communications protocol
Such as motor encoder position, some status informations of angular encoder position and each axle cabinet are sent to blower fan master control control chamber, main
Control control chamber issues startup, operation, halt command to pitch control device, if broken down in becoming oar, such as motor position is wrong
By mistake, pitch control device will be transmitted back to Main Control Tank fault message, and master control control chamber sends halt instruction can to pitch control device,
Pitch control device will send halt command, servo driver drives electricity after receiving halt instruction to each axle cabinet servo-driver
Machine, by blade feathering to home, performs emergency feathering action.
Actuator is made up of pitch motor, reductor, driving gear, fan blade, and servo driver drives performs machine
Structure regulation becomes oar propeller pitch angle, reaches to realize becoming oar purpose.
Claims (8)
1. the independent pitch system with controller strategy, it is characterised in that: include wind power generating set master controller,
Variable-pitch Controller and three groups of servo-drivers, stand-by power supply, pitch motor, encoder and the stopping means of corresponding blade, become
Pitch controller respectively with wind power generating set master controller and three servo-driver communications, each servo-driver is respectively
Connecting pitch motor, motor encoder, stand-by power supply and stopping means, motor encoder is arranged on the tail end of pitch motor, angle
Degree encoder is connected with blade bearing.
The most according to claim 1 with the independent pitch system of controller strategy, it is characterised in that: described stopping means is
Three groups of limit switches, often group limit switch is respectively arranged at 91 degree and 94 degree of positions of each blade rotor, and pitch-controlled system performs
Controlling blade during emergency feathering order and forward 91 degree of restraining position to, when 91 degree of limit switches lost efficacy, 94 degree of limit switches cut off
Battery power supply, it is ensured that the safe stall of blade.
The most according to claim 1 with the independent pitch system of controller strategy, it is characterised in that: described stand-by power supply by
Energy-storage travelling wave tube and charger composition, be system power supply when main power source generation power-off fault, make pitch-controlled system be driven from 0 ° by blade
Move the feather position of 90 °.
The most according to claim 1 with the independent pitch system of controller strategy, it is characterised in that: described energy-storage travelling wave tube is
Accumulator or super capacitor.
The most according to claim 1 with the independent pitch system of controller strategy, it is characterised in that: described angular encoder
Linkage is engaged with blade bearing internal tooth by prototype gear.
The most according to claim 1 with the independent pitch system of controller strategy, it is characterised in that: described pitch motor is
Brushless motor, sensing asynchronous machine, brshless DC motor or permagnetic synchronous motor.
7. the change oar method of the independent pitch system with controller strategy as claimed in claim 1, it is characterised in that: master control control
Device processed is according to the realtime power of generator operation and rotation speed of fan, pitch position with become oar speed and be sent to variable pitch control
Device, pitch control device receives position command and the speed command that master control control chamber sends, and is sent respectively in position and speed
Three servo driver drives actuators carry out becoming oar action, and regulation becomes oar propeller pitch angle, motor encoder real time record motor
The position rotated sends to servo-driver, servo-driver be sent to pitch control device, angular encoder record blower fan leaf
Sheet turned position, and this position is sent to pitch control device, pitch control device carries out verification by logical judgment and compares, to adopting
The motor encoder position of collection, angular encoder position carry out record in real time, and record the input/output signal of each sharf,
When each record value is beyond original start fault value, pitch control device is sent to master controller fault message, by master control control
Device processed ensures that change oar propeller pitch angle rotates at 0 °～90 ° of scopes, Variable-pitch Controller and master controller real-time communication, and monitoring becomes oar certainly
Body state, pitch control device feeds back to blower fan master control control chamber operation conditions, execution emergency feathering action of breaking down.
8. the change oar method of the independent pitch system with controller strategy as claimed in claim 7, it is characterised in that: described change
Pitch controller and the real-time communication of master controller, be communications protocol based on Canopen.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610574747.7A CN106224161A (en) | 2016-07-19 | 2016-07-19 | Independent pitch system and change oar method with controller strategy |
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| CN201610574747.7A CN106224161A (en) | 2016-07-19 | 2016-07-19 | Independent pitch system and change oar method with controller strategy |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070360A (en) * | 2017-05-02 | 2017-08-18 | 湖南拓天节能控制技术股份有限公司 | Wind-power electricity generation exchange becomes oar servo-driver output torque smooth control method |
| CN108092355A (en) * | 2017-12-14 | 2018-05-29 | 北京金风科创风电设备有限公司 | Charging control device and method of variable pitch system and wind generating set |
| CN108590958A (en) * | 2018-06-04 | 2018-09-28 | 包头市北工机械有限公司 | A kind of drive unit with variable airscrew pitch of wind driven generator |
| CN108869144A (en) * | 2018-06-27 | 2018-11-23 | 固安华电天仁控制设备有限公司 | A kind of variable blade control system for marine tidal-current energy generator group |
| CN109611272A (en) * | 2018-12-29 | 2019-04-12 | 固安华电天仁控制设备有限公司 | It is a kind of easily to replace without box variable blade control system |
| CN109707564A (en) * | 2018-12-29 | 2019-05-03 | 固安华电天仁控制设备有限公司 | A kind of driving motor all-in-one machine for wind turbine pitch system |
| CN111472929A (en) * | 2020-04-24 | 2020-07-31 | 内蒙古京能科右中风力发电有限责任公司 | Feathering method and device of wind driven generator and wind driven generator set |
| CN112083646A (en) * | 2020-08-21 | 2020-12-15 | 珠海格力电器股份有限公司 | Redundancy control method, device and control system |
| CN113446156A (en) * | 2020-03-27 | 2021-09-28 | 新疆金风科技股份有限公司 | State monitoring method, device, equipment and medium of variable pitch system |
| CN113623147A (en) * | 2021-09-16 | 2021-11-09 | 中国船舶重工集团海装风电股份有限公司 | Method for judging triggering fault of proximity switch of pitch system of wind turbine generator |
| CN113931792A (en) * | 2020-06-29 | 2022-01-14 | 新疆金风科技股份有限公司 | Variable pitch control method and device for wind generating set, controller and medium |
| CN114645819A (en) * | 2022-05-19 | 2022-06-21 | 东方电气风电股份有限公司 | Wind power variable pitch control method, device and system and storage medium |
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Cited By (17)
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|---|---|---|---|---|
| CN107070360B (en) * | 2017-05-02 | 2019-08-13 | 湖南拓天节能控制技术股份有限公司 | Wind-power electricity generation exchanges variable pitch servo-driver output torque smooth control method |
| CN107070360A (en) * | 2017-05-02 | 2017-08-18 | 湖南拓天节能控制技术股份有限公司 | Wind-power electricity generation exchange becomes oar servo-driver output torque smooth control method |
| CN108092355A (en) * | 2017-12-14 | 2018-05-29 | 北京金风科创风电设备有限公司 | Charging control device and method of variable pitch system and wind generating set |
| CN108590958A (en) * | 2018-06-04 | 2018-09-28 | 包头市北工机械有限公司 | A kind of drive unit with variable airscrew pitch of wind driven generator |
| CN108869144A (en) * | 2018-06-27 | 2018-11-23 | 固安华电天仁控制设备有限公司 | A kind of variable blade control system for marine tidal-current energy generator group |
| CN109611272A (en) * | 2018-12-29 | 2019-04-12 | 固安华电天仁控制设备有限公司 | It is a kind of easily to replace without box variable blade control system |
| CN109707564A (en) * | 2018-12-29 | 2019-05-03 | 固安华电天仁控制设备有限公司 | A kind of driving motor all-in-one machine for wind turbine pitch system |
| CN113446156A (en) * | 2020-03-27 | 2021-09-28 | 新疆金风科技股份有限公司 | State monitoring method, device, equipment and medium of variable pitch system |
| CN113446156B (en) * | 2020-03-27 | 2023-07-11 | 新疆金风科技股份有限公司 | State monitoring method, device, equipment and medium of pitch system |
| CN111472929A (en) * | 2020-04-24 | 2020-07-31 | 内蒙古京能科右中风力发电有限责任公司 | Feathering method and device of wind driven generator and wind driven generator set |
| CN113931792B (en) * | 2020-06-29 | 2022-11-29 | 新疆金风科技股份有限公司 | Variable pitch control method and device for wind generating set, controller and medium |
| CN113931792A (en) * | 2020-06-29 | 2022-01-14 | 新疆金风科技股份有限公司 | Variable pitch control method and device for wind generating set, controller and medium |
| CN112083646A (en) * | 2020-08-21 | 2020-12-15 | 珠海格力电器股份有限公司 | Redundancy control method, device and control system |
| CN113623147B (en) * | 2021-09-16 | 2022-09-30 | 中国船舶重工集团海装风电股份有限公司 | Method for judging triggering fault of proximity switch of pitch system of wind turbine generator |
| CN113623147A (en) * | 2021-09-16 | 2021-11-09 | 中国船舶重工集团海装风电股份有限公司 | Method for judging triggering fault of proximity switch of pitch system of wind turbine generator |
| CN114645819B (en) * | 2022-05-19 | 2022-09-13 | 东方电气风电股份有限公司 | Wind power pitch control method, device and system and storage medium |
| CN114645819A (en) * | 2022-05-19 | 2022-06-21 | 东方电气风电股份有限公司 | Wind power variable pitch control method, device and system and storage medium |
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