CN110296046A - A kind of wind-driven generator pitching control method - Google Patents
A kind of wind-driven generator pitching control method Download PDFInfo
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- CN110296046A CN110296046A CN201910577228.XA CN201910577228A CN110296046A CN 110296046 A CN110296046 A CN 110296046A CN 201910577228 A CN201910577228 A CN 201910577228A CN 110296046 A CN110296046 A CN 110296046A
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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
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
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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
- 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
- F03D7/043—Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic
-
- 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
- F03D7/047—Automatic control; Regulation by means of an electrical or electronic controller characterised by the controller architecture, e.g. multiple processors or data communications
-
- 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
- F03D7/06—Controlling wind motors the wind motors having rotation axis substantially perpendicular to the air flow entering the rotor
-
- 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
- F05B2270/32—Wind speeds
-
- 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
- F05B2270/327—Rotor or generator speeds
-
- 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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the 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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a kind of wind-driven generator pitching control methods, comprising the following steps: 1) judges whether unit external difference variable pitch occurs and exit demand, be to enter step 2), otherwise enter step 3)；2) judge whether Wind turbines difference pitch control function opens, be then otherwise to be entered step 3) using pure collaboration pitch control；3) judge whether that generator speed is greater than difference variable pitch incision revolving speed and propeller pitch angle is less than difference variable pitch and cuts out propeller pitch angle, be that then difference pitch control device keeps full amplitude output；Otherwise realize that difference pitch control device is exited by gain scheduling ring；The target pitch angle of each blade is exported to pitch-controlled system, executes variable pitch movement, it is 0 that the enabled closing of last difference variable pitch and difference pitch control device, which export,.The present invention carries out cooperative scheduling control between pure collaboration variable pitch and difference variable pitch strategy, and the graceful shutdown difference variable pitch ring under inessential operating condition and stopping process realizes that entire handoff procedure does not increase unbalanced load.
Description
Technical field
The present invention relates to wind-powered electricity generation field, in particular to a kind of wind-driven generator pitching control method.
Background technique
With the increase of Wind turbines single-machine capacity and the maturation of wind technology, large-scale wind electricity unit research emphasis is at present
Reduce manufacture and operating cost.By reducing the load of each critical component of Wind turbines, to mitigate the weight of these critical components,
And improve the reliability of equipment and prolong the service life, the factors such as wind turbulent flow, wind shear, tower shadow effect, yaw deviation can be to big
The impeller of type Wind turbines generates unbalanced load, and rotor diameter is also bigger, and the unbalanced degree of entire wind wheel face stress is got over
By force, unbalanced load is also just more obvious on impeller.In the wind power generating set operational process of complicated landform especially mountain wind field,
It will be influenced by external environments such as wind shear and strong turbulences, more imbalance suffered by the Wind turbines of large impeller is bigger.
The design of difference pitch control device is the control method based on collaboration variable pitch, for the unbalanced load detected,
By feedback control, unbalanced load is converted into award setting, on the basis of Collaborative Control, in addition independent difference becomes
Paddle controls signaling mechanism, to make each propeller pitch angle that can be controlled at different angles in case of unbalanced load depositing
System compensates unbalanced load.
When Wind turbines are using collaboration pitch control, if demand is exited in appearance shutdown in the process of running, wind-powered electricity generation
The each blade of unit can obtain being identical pitch control due to each blade always to fix pitch rate feathering to stop position
Instruction, therefore the position of each blade of entire stopping process is identical always (as shown in Figure 1).
But after Wind turbines are using technologies such as difference pitch controls, each blade, which obtains pitch control instruction, to be existed respectively
Isolated component, in the case, the position of each blade will be different during running of wind generating set.
If shutdown demand occurs under difference variable pitch working condition in unit, normal shutdown control method uses and association
Identical shutdown mode when with pitch control, each blade with stationary phase same rate feathering to shut down angle, due to each blade
The propeller pitch angle carved at the beginning is in different location, therefore each blade position deposits deviation (such as Fig. 2 institute in stopping process always
Show), this traditional control method can cause larger unbalanced load to Wind turbines.
In addition to above situation, Wind turbines are not required in all times of running using control technologies such as difference variable pitches.
The transmission parts such as system and pitch variable bearings will be executed to the variable pitch of Wind turbines using technologies such as difference variable pitches bring very high load capacity,
It is a kind of necessary balanced protection measure to wind power generating set significant components that collaboration variable pitch state is maintained in inessential situation.
Therefore, the feelings not only in emergency circumstances still switched in the variant variable pitch component state of normal operation in shutdown etc.
Under condition, the fast and reliable cooperative control method of one kind is required to guarantee that Wind turbines will not generate larger injustice in handoff procedure
Weigh load, to protect fan safe.
Summary of the invention
A kind of in order to solve the above technical problem, the present invention provides algorithms simple, safe and reliable wind-driven generator pitching
Control method.
Technical proposal that the invention solves the above-mentioned problems is: a kind of wind-driven generator pitching control method, is based on variable pitch
What control device was realized, pitch control device includes collaboration pitch control device, difference pitch control device, variable pitch scheduling controller,
Gain scheduling ring is equipped in difference pitch control device, wind power generating set connects with pitch control device, difference pitch control device is cooperateed with
It connects, collaboration pitch control device, difference pitch control device are connect with variable pitch scheduling controller, variable pitch scheduling controller and wind-power electricity generation
Unit connection；
Pitch control method the following steps are included:
1) judge whether unit external difference variable pitch occurs and exit demand, if it is, enter step 2), if it is not, then
It enters step 3)；
2) judge whether that current wind speed is less than default wind speed threshold value or current rotating speed is lower than default difference variable pitch and starts revolving speed
Threshold value, if it is, Wind turbines difference pitch control function is not opened, collaboration pitch control device does not need to take any at this time
Movement, using pure collaboration pitch control；If it is not, then Wind turbines difference pitch control function has turned on, enter step 3)；
3) variable pitch scheduling controller judges control model, variable pitch scheduling according to Wind turbines generator speed and propeller pitch angle
Controller judges whether that generator speed is greater than difference variable pitch incision revolving speed and propeller pitch angle is less than independent pitch and cuts out propeller pitch angle, such as
Fruit is then to enter step 4)；If it is not, then entering step 5)；
4) difference pitch control device keeps full amplitude output, i.e. the yield value g=g0 of holding gain scheduling link is constant, g0
For constant；
5) record collaboration pitch control device output initial time propeller pitch angle θ c0, while by gain scheduling link come
Realize that difference pitch control device exits；Variable pitch scheduling controller calculates the independent pitch error no-load speed of each blade, difference
Each blade target pitch angle of variable pitch link is gradually zeroed under the action of gain scheduling ring；The target pitch angle of each blade is defeated
Out to pitch-controlled system, variable pitch movement, the enabled closing of last difference variable pitch and the output of difference pitch control device are executed by pitch-controlled system
It is 0.
Above-mentioned wind-driven generator pitching control method, in the step 3), Wind turbines generator speed is as follows
Calculating is converted to；
Wr=wg/n
In formula: wr is hub rotation speed；Wg is generator speed；N is transmission chain no-load voltage ratio.
Above-mentioned wind-driven generator pitching control method, in the step 5), the propeller pitch angle θ c of collaboration pitch control device output
It is determined by following formula；
θ c=θ c0+a × t1
In formula: t1 is design synchronization time；A is target pitch rate.
Above-mentioned wind-driven generator pitching control method, in the step 5), the yield value g of gain scheduling ring, by following public affairs
Formula is calculated；
G=g0- (g0/t1) × t；(t1≥t≥0)
G=0；(t>t1)
In formula: t is the cumulative time that this enters the state that exits.
Above-mentioned wind-driven generator pitching control method, in the step 5), the target pitch of variable pitch scheduling controller output
Angle calculation are as follows:
θ synci=bi × t1
In formula: θ synci is the target pitch angle of the piece blade i of variable pitch scheduling controller output, and bi is the variable pitch of blade i
Error no-load speed, bi are determined by following formula:
Bi=(θ c-θ ci) × Kp
In formula: θ ci is the actual blade pitch angle of current blade i；Kp is proportionality coefficient.
Above-mentioned wind-driven generator pitching control method, in the step 5), the propeller pitch angle target value of blade are as follows: θ i=θ ci+
θdi+θsynci
It is final:
θ i=θ c
In formula, θ i is the target pitch angle of blade i；θ di is the target pitch of the blade i of difference pitch control device output
Angle；θ synci is the target pitch angle of the blade i of variable pitch scheduling controller output.
Above-mentioned wind-driven generator pitching control method, in the step 5), for the propeller pitch angle of three-vane wind generator
Target value are as follows:
θ 1=θ c1+ θ d1+ θ sync1, θ 2=θ c2+ θ d2+ θ sync2, θ 3=θ c3+ θ d3+ θ sync3
It is final:
θ 1=θ 2=θ 3=θ c
In formula, θ 1, θ 2, θ 3 are respectively the target pitch angle of blade 1, blade 2, blade 3；θ d1, θ d2, θ d3 are respectively poor
The target pitch angle of blade 1, blade 2, blade 3 that different pitch control device exports；θ sync1, θ sync2, θ sync3 are respectively to become
The target pitch angle of blade 1, blade 2, blade 3 that paddle scheduling controller exports.
The beneficial effects of the present invention are:
1, the present invention carries out cooperative scheduling control between pure collaboration variable pitch and difference variable pitch strategy, in inessential operating condition and stops
Graceful shutdown difference variable pitch ring under machine process realizes that entire handoff procedure does not increase unbalanced load, thus protect blower and
Blower important component.
2, for stopping process, difference variable pitch open state downtime and conventional target control stop under mechanism of the present invention
The machine time is identical, and compressor emergency shutdown speed is guaranteed.
3, control method of the invention not will increase Wind turbines unbalanced load in stopping process, improve the unit longevity
Life.
4, for the handoff procedure of other operating conditions, the present invention not will increase Wind turbines unbalanced load in handoff procedure,
Set pitch control component and lifetime of system are improved, unit safety is improved.
Detailed description of the invention
Fig. 1 is that Wind turbines use pure collaboration pitch control, stopping process award setting trajectory diagram.
Fig. 2 is that Wind turbines use difference pitch control, normal shutdown process award setting trajectory diagram.
Fig. 3 is the structural principle block diagram of pitch control device of the present invention.
Fig. 4 is the flow chart of pitch control method of the present invention.-
Fig. 5 is to utilize normal power generation process award setting track after pitch control method of the invention.
Fig. 6 is to utilize stopping process award setting track after pitch control method of the invention.
Fig. 7 is to utilize stopping process load control effect schematic diagram after pitch control method of the invention.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown in figure 3, pitch control device includes collaboration pitch control device, difference pitch control device, variable pitch scheduling controlling
Device, is equipped with gain scheduling ring in difference pitch control device, wind power generating set with cooperate with pitch control device, difference pitch control device
Connection, collaboration pitch control device, difference pitch control device are connect with variable pitch scheduling controller, and variable pitch scheduling controller and wind-force are sent out
The connection of motor group.
It cooperates with pitch control device by receiving RotorSpeed tach signal, realizes traditional Wind turbines speed-changing oar-changing control
Function is controlled each blade and is near best propeller pitch angle always by target pitch control when being lower than rated wind speed, with
Realize maximum energy capture；It is being higher than rated wind speed, by target pitch control, generated output power is being made to keep stablizing.
Difference pitch control device is by receiving its required ExtSignals signal group (according to the difference of difference controller
Signal group may include multi-signal, such as load cell signal, blade azimuth angle etc.), reduce on impeller and blower other component
Unbalanced load, to reduce the fatigue load of each critical component of Wind turbines.
As shown in figure 4, a kind of wind-driven generator pitching control method, comprising the following steps:
1) judge whether unit external difference variable pitch occurs and exit demand, if it is, enter step 2), if it is not, then
It enters step 3).
2) judge whether that current wind speed is less than default wind speed threshold value or current rotating speed is lower than default difference variable pitch and starts revolving speed
Threshold value, if it is, Wind turbines difference pitch control function is not opened, i.e. difference variable pitch enabled state c=0 is cooperateed at this time
Pitch control device does not need to take any movement, using pure collaboration pitch control；If it is not, then Wind turbines difference pitch control
Function has turned on, and enters step 3).
3) variable pitch scheduling controller judges control model, variable pitch scheduling according to Wind turbines generator speed and propeller pitch angle
Controller judges whether that generator speed is greater than difference variable pitch incision revolving speed and propeller pitch angle is less than difference variable pitch and cuts out propeller pitch angle, such as
Fruit is then to enter step 4)；If it is not, then entering step 5)；
Wind turbines generator speed can be calculated as follows and is converted to；
Wr=wg/n
In formula: wr is hub rotation speed；Wg is generator speed；N is transmission chain no-load voltage ratio.
4) difference pitch control device keeps full amplitude output, i.e. the yield value g=g0 of holding gain scheduling link is constant, g0
For constant.
5) the initial time propeller pitch angle θ c0 of collaboration pitch control device output, the paddle of collaboration pitch control device output are recorded
Elongation θ c is determined by following formula；
θ c=θ c0+a × t1
In formula: t1 is design synchronization time；A is target pitch rate.
Realize that difference pitch control device is exited by gain scheduling ring simultaneously；The yield value g of gain scheduling ring, by following
Formula is calculated；
G=g0- (g0/t1) × t；(t1≥t≥0)
G=0；(t>t1)
In formula: t is the cumulative time that this enters the state that exits.
Variable pitch scheduling controller calculates 3 independent variable pitch error no-load speeds, difference using design t1 synchronization time
The blade 1 of variable pitch link, blade 2,3 target pitch angle of blade are gradually zeroed under the action of gain scheduling ring；Variable pitch scheduling control
The target pitch angle calculation of device output processed are as follows:
θ synci=bi × t1
In formula: i 1,2,3；θ synci is the target pitch angle of the piece blade i of variable pitch scheduling controller output, and bi is paddle
The variable pitch error no-load speed of leaf i, bi are determined by following formula:
Bi=(θ c-θ ci) × Kp
In formula: θ ci is the actual blade pitch angle of current blade i；Kp is proportionality coefficient.
The propeller pitch angle target value of blade are as follows:
θ i=θ ci+ θ di+ θ synci
It is final:
θ i=θ c
In formula, θ i is the target pitch angle of blade i；θ di is the target pitch of the blade i of difference pitch control device output
Angle；θ synci is the target pitch angle of the blade i of variable pitch scheduling controller output.
Particularly have for 3 blade wind power generation machines,
θ 1=θ c1+ θ d1+ θ sync1, θ 2=θ c2+ θ d2+ θ sync2, θ 3=θ c3+ θ d3+ θ sync3
It is final:
θ 1=θ 2=θ 3=θ c
In formula, θ 1, θ 2, θ 3 are respectively the target pitch angle of blade 1, blade 2, blade 3；θ d1, θ d2, θ d3 are respectively poor
The target pitch angle of blade 1, blade 2, blade 3 that different pitch control device exports；θ sync1, θ sync2, θ sync3 are respectively to become
The target pitch angle of blade 1, blade 2, blade 3 that paddle scheduling controller exports.The target pitch angle of three blades is exported to change
Oar system executes variable pitch movement by pitch-controlled system, and it is 0 that the enabled closing of last difference variable pitch and difference pitch control device, which export, and
The controller of difference variable pitch is reset simultaneously, this scheduling is completed.
As shown in figure 5, difference pitch control is gradually moved back in stateful switchover process after using pitch control method of the invention
Out, while each different propeller pitch angles of variable pitch scheduling controller Fast synchronization.
As shown in fig. 6, entire stopping process difference pitch control is gradually moved back after using pitch control method of the invention
Out, each different propeller pitch angles of variable pitch scheduling controller Fast synchronization maintain impeller air-balance, realize entire stopping process
Symmetrical load (as shown in Figure 7) invariably.
Claims (7)
1. a kind of wind-driven generator pitching control method is realized based on pitch control device, pitch control device includes association
Same pitch control device, difference pitch control device, variable pitch scheduling controller are equipped with gain scheduling ring, wind in difference pitch control device
Power generator group with cooperate with pitch control device, difference pitch control device connect, collaboration pitch control device, difference pitch control device with
The connection of variable pitch scheduling controller, variable pitch scheduling controller are connect with wind power generating set；
Pitch control method the following steps are included:
1) judge whether unit external difference variable pitch occurs and exit demand, if it is, enter step 2), if it is not, then into
Step 3)；
2) judge whether that current wind speed is less than default wind speed threshold value or current rotating speed is lower than default difference variable pitch and starts rotary speed threshold value,
If it is, Wind turbines difference pitch control function is not opened, pitch control device is cooperateed with not need to take any movement at this time,
Using pure collaboration pitch control；If it is not, then Wind turbines difference pitch control function has turned on, enter step 3)；
3) variable pitch scheduling controller judges control model, variable pitch scheduling controlling according to Wind turbines generator speed and propeller pitch angle
Device judges whether that generator speed is greater than difference variable pitch incision revolving speed and propeller pitch angle is less than independent pitch and cuts out propeller pitch angle, if
It is then to enter step 4)；If it is not, then entering step 5)；
4) difference pitch control device keeps full amplitude output, i.e. the yield value g=g0 of holding gain scheduling link is constant, and g0 is normal
Number；
5) the initial time propeller pitch angle θ c0 of collaboration pitch control device output is recorded, while being realized by gain scheduling link
Difference pitch control device exits；Variable pitch scheduling controller calculates the independent pitch error no-load speed of each blade, difference variable pitch
Each blade target pitch angle of link is gradually zeroed under the action of gain scheduling ring；The target pitch angle of each blade export to
Pitch-controlled system executes variable pitch movement by pitch-controlled system, and it is 0 that the enabled closing of last difference variable pitch and difference pitch control device, which export,.
2. wind-driven generator pitching control method according to claim 1, it is characterised in that: in the step 3), wind-powered electricity generation
Set generator revolving speed calculates be converted to as follows；
Wr=wg/n
In formula: wr is hub rotation speed；Wg is generator speed；N is transmission chain no-load voltage ratio.
3. wind-driven generator pitching control method according to claim 1, it is characterised in that: in the step 5), collaboration
The propeller pitch angle θ c of pitch control device output is determined by following formula；
θ c=θ c0+a × t1
In formula: t1 is design synchronization time；A is target pitch rate.
4. wind-driven generator pitching control method according to claim 3, it is characterised in that: in the step 5), gain
The yield value g of grooming ring, is calculated as follows；
G=g0- (g0/t1) × t；(t1≥t≥0)
G=0；(t>t1)
In formula: t is the cumulative time that this enters the state that exits.
5. wind-driven generator pitching control method according to claim 4, it is characterised in that: in the step 5), variable pitch
The target pitch angle calculation of scheduling controller output are as follows:
θ synci=bi × t1
In formula: θ synci is the target pitch angle of the piece blade i of variable pitch scheduling controller output, and bi is the variable pitch error of blade i
No-load speed, bi are determined by following formula:
Bi=(θ c-θ ci) × Kp
In formula: θ ci is the actual blade pitch angle of current blade i；Kp is proportionality coefficient.
6. wind-driven generator pitching control method according to claim 4, it is characterised in that: in the step 5), blade
Propeller pitch angle target value are as follows:
θ i=θ ci+ θ di+ θ synci
It is final:
θ i=θ c
In formula, θ i is the target pitch angle of blade i；θ di is the target pitch angle of the blade i of difference pitch control device output；θ
Synci is the target pitch angle of the blade i of variable pitch scheduling controller output.
7. wind-driven generator pitching control method according to claim 6, it is characterised in that: in the step 5), for
The propeller pitch angle target value of three-vane wind generator are as follows:
θ 1=θ c1+ θ d1+ θ sync1, θ 2=θ c2+ θ d2+ θ sync2, θ 3=θ c3+ θ d3+ θ sync3
It is final:
θ 1=θ 2=θ 3=θ c
In formula, θ 1, θ 2, θ 3 are respectively the target pitch angle of blade 1, blade 2, blade 3；θ d1, θ d2, θ d3 are respectively that difference becomes
The target pitch angle of blade 1, blade 2, blade 3 that paddle controller exports；θ sync1, θ sync2, θ sync3 are respectively variable pitch tune
Spend the blade 1 of controller output, the target pitch angle of blade 2, blade 3.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894800A (en) * | 2020-07-16 | 2020-11-06 | 湘电风能有限公司 | Wind driven generator rotating speed control method for improving environmental adaptability |
| CN112196732A (en) * | 2020-08-31 | 2021-01-08 | 中国东方电气集团有限公司 | Fan master control pitch and torque instruction processing system |
| WO2021098925A1 (en) * | 2019-11-21 | 2021-05-27 | Vestas Wind Systems A/S | Stopping a wind turbine rotor based on stored pitch angle signal |
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