CN105569920B - A kind of control method and control system of wind-driven generator - Google Patents
A kind of control method and control system of wind-driven generator Download PDFInfo
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- CN105569920B CN105569920B CN201610131561.4A CN201610131561A CN105569920B CN 105569920 B CN105569920 B CN 105569920B CN 201610131561 A CN201610131561 A CN 201610131561A CN 105569920 B CN105569920 B CN 105569920B
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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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- 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
The invention discloses a kind of control method of wind-driven generator and control system, control method includes：Obtain current wind speed and the blade angle in current wind speed leeward power generator；According to current air rate adjustment blade angle to target angle, blade is enable to absorb wind energy to greatest extent.Control system includes anemometry, Angle Measuring Equipment and pitch control device, pitch control device is connect with the multi-disc blade of anemometry, Angle Measuring Equipment and wind-driven generator, rotating speed for controlling wind-driven generator by controlling the angle of blade, and blade is set to absorb wind energy to greatest extent to target angle according to current air rate adjustment blade angle.It through the invention can be in wind-driven generator before reaching rated power not yet, according to air rate adjustment blade angle, to improve its Wind energy extraction ability in certain wind speed section, to improve the generated energy of wind-driven generator under conditions of not increasing extra cost.
Description
Technical field
The present invention relates to the control methods and control system of technical field of wind power generation more particularly to a kind of wind-driven generator
System.
Background technology
Recently as the fast development of wind-powered electricity generation industry, the generated energy for how improving unit has become wind power generating set
Core control technology, especially improves the generated energy of unit in the case where not increasing extra cost, therefore how to control unit
More effectively capture wind energy is extremely important to improve generated energy.
Pitch-controlled system is the important component of wind-driven generator, and traditional unit allocation pattern is to be in specified in unit
The angle value of blade is in a fixed angle when below power, this angle is calculated according to the characteristic of blade itself
It arrives, only just starts to adjust blade angle after unit is more than rated power, the power output for keeping unit constant.But it is this
Unit allocation pattern is there are one drawback, by calculate obtained blade angle value can have when less than rated wind speed than
The all broader maximal wind-energy capture ability of other any angular ranges, but be not institute in certain some specific wind speed interval
There is maximal wind-energy capture ability under obtained blade angle value, but under other blade angle values there is better wind energy to catch
Capacitation power.
Based on above-mentioned it is found that existing unit allocation pattern can not reach most strong wind in certain some specific wind speed interval
It can capture ability.
Invention content
For problems of the prior art, the purpose of the present invention be provide a kind of wind-driven generator control method and
Control system can not reach optimal wind energy capture energy to solve unit allocation pattern in the prior art in certain some specific sections
The technical issues of power.
To achieve the above object, on the one hand,
The present invention provides a kind of control methods of wind-driven generator, including：
Obtain current wind speed and the blade angle in current wind speed leeward power generator；
Blade is set to absorb wind to greatest extent to target angle according to blade angle described in the current air rate adjustment
Energy.
According to another embodiment of the invention, according to blade angle described in the current air rate adjustment to target angle
Step includes：
Specific blade angle is set according to the correspondence of the current wind speed and wind speed and wind power efficiency to make
For the target angle；
Judge whether the blade angle reaches the target angle, if the blade angle does not reach the target
Angle then executes variable pitch instruction, wherein variable pitch instruction refers to obtaining current wind speed in real time and being sent out in current wind speed apparatus for lower wind
The blade angle of motor, while the current wind speed and the blade angle are updated, and according to the updated current wind speed
And the blade angle adjusts the blade angle, until the blade angle reaches the target angle；
The wherein described wind power efficiency is that the wind-driven generator is in the specific blade angle under current wind speed
Degree obtains absorbs wind energy to greatest extent.
According to another embodiment of the invention, the control method further includes：
Preset the correspondence of wind speed and wind power efficiency, and the corresponding wind work(in different wind speed intervals
Rate usage factor is different, and corresponding target angle is also different.
According to another embodiment of the invention, further include if the blade angle reaches the target angle：
Obtain the current operation power and rotating speed of the wind-driven generator；
Torque power controller controls the operation of the wind-driven generator according to the current operation power and the rotating speed.
According to another embodiment of the invention, the control method further includes：
Judge whether the current operation power of the wind-driven generator reaches volume in the wind-driven generator operational process
Determine power, when the current operation power of the wind-driven generator does not reach the rated power, judges the blade angle
Whether the target angle is reached；When the current operation power of the wind-driven generator reaches the rated power, change is executed
Paddle is operated to keep the wind-driven generator to be run under firm power, wherein the value of the firm power is equal to the specified work(
The value of rate.
In order to solve the above technical problems, on the other hand,
The present invention also provides a kind of control system of wind-driven generator, for controlling wind-driven generator, including：
Anemometry, current wind speed when for measuring the wind-driven generator work；
Angle Measuring Equipment, for measuring blade angle；
Pitch control device is more with the anemometry, the Angle Measuring Equipment and the wind-driven generator
Piece blade connects, the rotating speed for controlling the wind-driven generator by controlling the angle of the blade, and according to described current
Blade angle described in air rate adjustment enables blade to absorb wind energy to greatest extent to target angle.
According to one embodiment of present invention, further include：
Presetting module, the correspondence for presetting wind speed and wind power efficiency, wherein the wind power is sharp
With coefficient be under current wind speed the wind-driven generator be in specific blade angle obtain absorb wind energy to greatest extent；
First judgment module, for judging whether the blade angle reaches the target angle, if the blade angle
Degree, which does not reach the target angle and then sends variable pitch, to be instructed to the pitch control device, wherein variable pitch instruction refers to real-time
Current wind speed and the blade angle in current wind speed leeward power generator are obtained, while updating the current wind speed and the paddle
Leaf angle, and the blade angle is adjusted according to the updated current wind speed and the blade angle, until the paddle
Leaf angle reaches the target angle.
According to another embodiment of the invention, the presetting module is presetting wind speed and wind power efficiency
When correspondence, corresponding wind power efficiency is different in different wind speed intervals, and corresponding target angle is also different.
According to another embodiment of the invention, further include：
Power-measuring device, the current operation power for measuring the wind-driven generator；
Tachometric survey equipment, the rotating speed for measuring the wind-driven generator；
Torque power controller, for controlling the wind-driven generator according to the current operation power and the rotating speed
Operation.
According to another embodiment of the invention, further include：
Second judgment module, the current fortune for judging the wind-driven generator in the wind-driven generator operational process
Whether row power reaches rated power, when the current operation power of the wind-driven generator does not reach the rated power,
It goes to and judges whether the blade angle reaches the target angle；When the current operation power of the wind-driven generator reaches institute
When stating rated power, variable pitch operation is executed to keep the wind-driven generator to be run under firm power, wherein the constant work(
The value of rate is equal to the value of the rated power.
Based on the above-mentioned technical proposal it is found that the beneficial effects of the present invention are：It can not yet reached in wind-driven generator
To before rated power, according to air rate adjustment blade angle, to improve its Wind energy extraction ability in certain wind speed section, to
The generated energy of wind-driven generator is improved under conditions of not increasing extra cost.
Description of the drawings
Fig. 1 is a kind of step flow chart of the control method for wind-driven generator that the embodiment of the present invention one provides.
Fig. 2 is the step flow chart of step S20 in the embodiment of the present invention one.
Fig. 3 is the relation schematic diagram in different wind speed interval wind speed-wind power efficiencies in the embodiment of the present invention one.
Fig. 4 be Fig. 3 in wind speed the sections 2.5m/s~12.5m/s wind speed-wind power efficiency relation schematic diagram.
Fig. 5 is the overall flow figure for the method for wind-driven generator pitching control that the embodiment of the present invention one provides.
Fig. 6 is a kind of composition schematic diagram of the control system of the wind-driven generator provided in the embodiment of the present invention two.
Specific implementation mode
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be real in a variety of forms
It applies, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the disclosure will be comprehensively and complete
It is whole, and the design of example embodiment is comprehensively communicated to those skilled in the art.Identical reference numeral indicates in figure
Same or similar part, thus repetition thereof will be omitted.
In addition, described feature, structure or characteristic can be incorporated in one or more implementations in any suitable manner
In example.In the following description, many details are provided to fully understand embodiment of the disclosure to provide.However,
It will be appreciated by persons skilled in the art that can be with technical solution of the disclosure without one in the specific detail or more
It is more, or other methods, constituent element, material, device, step may be used etc..In other cases, it is not shown in detail or describes
Known features, method, apparatus, realization, material or operation are to avoid fuzzy all aspects of this disclosure.
Block diagram shown in attached drawing is only functional entity, not necessarily must be corresponding with physically separate entity.
I.e., it is possible to realize these functional entitys using software form, or this is realized in one or more hardware devices or integrated circuit
A little functional entitys, or these functional entitys are realized in heterogeneous networks and/or processor device and/or microcontroller device.
Embodiment one
To solve the above problems, a kind of control method of wind-driven generator is present embodiments provided, steps flow chart such as Fig. 1 institutes
Show, includes the following steps：
Step S10：Obtain current wind speed and the blade angle in current wind speed leeward power generator.
Step S20：According to current air rate adjustment blade angle to target angle, blade is enable to absorb wind to greatest extent
Energy.
Method provided in this embodiment adjusts blade angle extremely at any time by obtaining current wind speed and blade angle in real time
Target angle, in traditional mode merely with fixed blade angle compared with, the present embodiment can be according to air rate adjustment blade angle
Degree enables blade to absorb wind energy to greatest extent, improves power generation to improve it in the Wind energy extraction ability in certain wind speed section
Amount.
According to the step flow of current air rate adjustment blade angle to target angle as shown in Fig. 2, specific packet in step S20
It includes：
Step S21：Specific blade angle is set according to the correspondence of current wind speed and wind speed and wind power efficiency
It is to be in specific blade angle in current wind speed leeward power generator to obtain that degree, which is used as target angle, apoplexy power efficiency,
Wind energy is absorbed to greatest extent.
Step S22：Judge whether blade angle reaches target angle, is held if blade angle does not reach target angle
Row variable pitch instructs, and wherein variable pitch instruction refers to obtaining current wind speed and the blade angle in current wind speed leeward power generator in real time
Degree, while current wind speed and blade angle are updated, and blade angle is adjusted according to updated current wind speed and blade angle,
Until blade angle reaches target angle.
Referring to Fig. 2, further include before step S21：
Step S21 '：The correspondence of wind speed and wind power efficiency is preset, and in different wind speed intervals
Corresponding best wind power efficiency is different, and corresponding target angle is also different.
The range of wind speed is from 0 to 25m/s, the correspondence of wind speed-wind power efficiency in different wind speed intervals
As shown in Figure 3 and Figure 4, figure includes 5 curves, and 4 sections are roughly divided on the abscissa where wind speed, by that can be seen in figure
Maximum wind power efficiency homologous thread 2, that is, predefined paddle on homologous thread 2 can be reached in section 1 by going out
Leaf angle is target angle；And maximum wind power efficiency homologous thread 3 can be reached in section 2, that is, it is corresponding
Predefined blade angle is target angle on curve 3；And maximum wind power efficiency can be reached in section 3 and corresponded to
Predefined blade angle is target angle on curve 5, that is, homologous thread 5；And maximum wind can be reached in section 4
Predefined blade angle is target angle on power efficiency homologous thread 2, that is, homologous thread 2.It is being actually needed
In can also set the curve of the wind speed and wind power efficiency more crossed, in wind power coefficient maximum (namely best wind work(
Rate coefficient) curve on set corresponding target angle.
It can also find out from Fig. 3 and Fig. 4, only be selected according to wind speed-wind power correspondence in certain wind speed intervals opposite
The target angle answered substantially is in the sections 2.5m/s~12.5m/s wind power coefficient difference in wind speed, such as in section
In 1, the wind power efficiency of curve 2 is maximum, and the wind power efficiency of curve 1 takes second place, the wind power efficiency of curve 3
Third, the wind power efficiency of curve 4 more takes second place, and the wind power efficiency of curve 5 is minimum.In section 2, section 3
It similarly can no longer be repeated one by one as seen from the figure with section 4.
Referring to Fig. 3, it is more than 12.5m/s in wind speed, until wind speed reaches wind power coefficient in the section of 25m/s and is not
Continue rising, and there is no significant difference, it is one that five curves, which have overlapped, in figure.Therefore control provided in this embodiment
When method processed is when wind speed is less than certain value (namely the power of wind-driven generator is less than certain value, such as rated power),
It can be made come corresponding blade angle when selecting wind power efficiency maximum in the wind speed interval according to the difference of wind speed
For target angle, to set blade angle as target angle, to improve according to the wind speed obtained in real time in subsequent step
Blade enables blade to absorb wind energy to greatest extent, improves generated energy in the Wind energy extraction ability in certain wind speed section.And work as
Wind speed just not necessarily will also set blade when being more than certain value (or wind-driven generator is more than rated power) according to wind speed
Angle is to obtain maximum generated energy, but with constant power operation, that is, corresponds to fixed blade angle, can carry out hereinafter
It is discussed in detail, details are not described herein again.
Referring to Fig. 2, further include later if blade angle reaches target angle in step S22：
Step S23：Obtain the current operation power and rotating speed of wind-driven generator.
Step S24：Torque power controller controls the operation of wind-driven generator according to current operation power and rotating speed, to
Subsequent step judges whether wind-driven generator reaches rated power.
Step S25：Judge whether the current operation power of wind-driven generator reaches volume in wind-driven generator operational process
Determine power, when the current operation power of wind-driven generator does not reach rated power, judges whether blade angle reaches target
Angle；When the current operation power of wind-driven generator reaches rated power, variable pitch operation is executed to keep wind-driven generator to exist
It is run under firm power, wherein the value of firm power is equal to the value of rated power.
Referring to Fig. 3, when the operation power of wind-driven generator is when up to or over rated power, wind speed-wind power
There is no difference for usage factor, and wind power efficiency also no longer rises but declining, therefore in order to still can
Enough as possible reach wind-driven generator to absorb wind energy to greatest extent, research and analyse and test many times number by technical staff
According to verification, keeps constant Power operation and can obtain as far as possible and absorb wind energy to greatest extent.
Based on above-mentioned, the flow of method entirety provided in this embodiment is as shown in figure 5, comprise the following processes：
First, it is determined that whether wind power generating set (abbreviation unit) is grid-connected, if it is continue to walk in next step, if not
It then waits for always until unit enters grid-connected just continuation next step.It should be noted that generally in more large-scale power generation system
More than one wind-driven generator, but multiple wind-driven generators are affirmed in system, therefore referred to as wind power generating set is more particularly suitable.
The step for be exactly to judge whether wind-driven generator enters stage for generating electricity by way of merging two or more grid systems, enter to generate electricity by way of merging two or more grid systems later and just subsequently walked
Suddenly.
Secondly, according to the correspondence of the wind speed of acquisition and wind speed-wind power efficiency in each wind speed stage by wind
The maximum blade angle of power efficiency is set as target angle.Certainly, further include the steps that necessarily obtaining wind speed, typically
Wind speed is obtained using airborne anemometry.
Then, judge whether current blade angle reaches target angle, wind is if it is controlled by torque/power controller
The operation of power generator, if otherwise returning to execute variable pitch instruction, so-called variable pitch instruction is exactly to measure current blade angle, root
Select corresponding blade angle as target angle according to the correspondence of wind speed and wind speed-wind power efficiency.This is one
A process constantly adjusted, needs to repeat, until blade angle reaches target angle.
Torque/power controller simultaneously also need to the unit obtained according to power-measuring device current operation power and
The rotating speed for the unit that tachometric survey equipment obtains can will be inhaled so that unit can be correspondingly improved rotating speed when wind speed increases
The wind energy of receipts is converted into electric energy to greatest extent.Also further to judge whether unit reaches whether unit reaches in subsequent step
To rated power, start to execute variable pitch operation if having reached rated power, and keep constant Power operation, if do not had also
Have reach rated power then continue adjust blade angle, until reaching target angle.
In conclusion the advantageous effect of the present embodiment is：In wind-driven generator before reaching rated power not yet,
In real time obtain wind speed, and according to air rate adjustment blade angle when reaching wind power efficiency maximum corresponding target angle
Degree, to improve its Wind energy extraction ability in certain wind speed section, to improve wind-force under conditions of not increasing extra cost
The generated energy of generator.
Embodiment two
In order to solve the above technical problems, be based on above-described embodiment, a kind of wind-driven generator is additionally provided in the present embodiment
Control system 200, for controlling wind-driven generator 10, composition schematic diagram is as shown in fig. 6, include：Anemometry
20, Angle Measuring Equipment 30 and pitch control device 40.
Wind-driven generator 10 is for converting wind energy into electric energy.There is multi-disc blade, for catching wherein on wind-driven generator
Obtain wind energy.Also there is an angle between blade top and Plane of rotation, normally referred to as propeller pitch angle, and (example under the same conditions
Such as identical wind speed), if propeller pitch angle is different, the wind energy absorbed is also different.Traditional wind-driven generator is not having
It is to be worked with fixed propeller pitch angle before reaching rated power, just with constant power operation after reaching rated power, and this
The control system offer that application provides controls wind-driven generator, changes its propeller pitch angle according to wind speed, makes wind-driven generator
The ability for absorbing wind energy to greatest extent can be reached.
Anemometry 20 is used to measure current wind speed when wind-driven generator 10 works, and usually measures wind speed, makes
With airborne anemometry.
Angle Measuring Equipment 30 is for measuring blade angle, that is, above-mentioned propeller pitch angle.It is tangible referring to Fig. 3 and Fig. 4
Different wind speed intervals is different the absorbability of wind energy, and specified work(is not up in wind-driven generator in traditional technology
Before rate, using fixed propeller pitch angle, and the target angle of blade is adjusted in the present embodiment in real time according to wind speed, to reach
Maximum wind energy absorbability.
Pitch control device 40 is connect with anemometry 20, Angle Measuring Equipment 30 and multi-disc blade, for passing through
The rotating speed of the angle control wind-driven generator 10 of blade is controlled, and is made to target angle according to current air rate adjustment blade angle
Blade can absorb wind energy to greatest extent.The rotating speed that wherein pitch control device 40 controls wind-driven generator 10 is particularly control
The rotating speed of wind wheel on wind-driven generator 10.
In addition to above structure, further include in the control system：Presetting module 50 and the first judgment module 60.
Presetting module 50 is used to preset the correspondence of wind speed and wind power efficiency.Its apoplexy power utilization system
Number absorbs wind energy to greatest extent to be in the acquisition of specific blade angle in current wind speed leeward power generator 10.Wherein presetting module
50 when presetting correspondence of the wind speed with wind power efficiency, the corresponding wind power profit in different wind speed intervals
With coefficient difference, corresponding target angle is also different, and 4 sections are divided into when wind speed is in 2.5m/s~12.5m/s, selects not
With the maximum blade angle of curve windward power efficiency as target angle.
First judgment module 60 is for judging whether blade angle reaches target angle, if blade angle does not reach mesh
Mark angle then sends variable pitch and instructs to pitch control device, and wherein variable pitch instruction refers to obtaining current wind speed in real time and in current wind
The blade angle of fast leeward power generator 10, while current wind speed and blade angle are updated, and according to updated current wind speed
And blade angle adjusts blade angle, until blade angle reaches target angle.
Further include in the control system power-measuring device 70, tachometric survey equipment 80, torque power controller 90 and
Second judgment module 100.
Power-measuring device 70 is used to measure the current operation power of wind-driven generator 10, and tachometric survey equipment 80 is for surveying
The rotating speed of wind-driven generator 10 is measured, torque power controller 90 is used to control wind-driven generator according to current operation power and rotating speed
10 operation.Torque power controller 90 can increase according to the torque of current air rate adjustment wind-driven generator, such as in wind speed
The torque for needing increase wind-driven generator accordingly afterwards, to enable wind-driven generator to turn the wind energy of absorption to greatest extent
Electric energy is turned to, generating capacity is improved.
Second judgment module 100 is used to judge during wind-driven generator transports 10 row the current operation work(of wind-driven generator
Whether rate reaches rated power, when the current operation power of wind-driven generator 10 does not reach rated power, goes to judgement paddle
Whether leaf angle reaches target angle；When the current operation power of wind-driven generator 10 reaches rated power, variable pitch behaviour is executed
Make to keep wind-driven generator to be run under firm power, wherein the value of firm power is equal to the value of rated power.
The specific of control system judges that flow is shown in Figure 5.
The present embodiment has with one identical technique effect of above-described embodiment, and details are not described herein again.
Artisan will appreciate that not departing from appended claims of the invention present invention disclosed
It changes and retouches made by the case of scope and spirit, within the scope of the claims for belonging to the present invention.
Claims (7)
1. a kind of control method of wind-driven generator, which is characterized in that including：
Obtain current wind speed and the blade angle in current wind speed leeward power generator；
Blade is set to absorb wind energy to greatest extent to target angle according to blade angle described in the current air rate adjustment；
Include according to blade angle to the step of target angle described in the current air rate adjustment：
Specific blade angle is set as institute according to the correspondence of the current wind speed and wind speed and wind power efficiency
State target angle；
Judge whether the blade angle reaches the target angle, if the blade angle does not reach the target angle
Variable pitch instruction is then executed, wherein variable pitch instruction refers to obtaining current wind speed in real time and in current wind speed leeward power generator
Blade angle, while updating the current wind speed and the blade angle, and according to the updated current wind speed and
The blade angle adjusts the blade angle, until the blade angle reaches the target angle；
If the blade angle reaches the target angle, obtains the current operation power of the wind-driven generator and turn
Speed, torque power controller control the operation of the wind-driven generator according to the current operation power and the rotating speed；
The wherein described wind power efficiency is that the wind-driven generator is in the specific blade angle and obtains under current wind speed
It obtains and absorbs wind energy to greatest extent.
2. control method as described in claim 1, which is characterized in that the control method further includes：
Preset the correspondence of wind speed and wind power efficiency, and the corresponding best wind work(in different wind speed intervals
Rate usage factor is different, and corresponding target angle is also different.
3. control method as described in claim 1, which is characterized in that the control method further includes：
Judge whether the current operation power of the wind-driven generator reaches specified work(in the wind-driven generator operational process
Whether rate judges the blade angle when the current operation power of the wind-driven generator does not reach the rated power
Reach the target angle；When the current operation power of the wind-driven generator reaches the rated power, variable pitch behaviour is executed
Make to keep the wind-driven generator to be run under firm power, wherein the value of the firm power is equal to the rated power
Value.
4. a kind of control system of wind-driven generator, for controlling wind-driven generator, which is characterized in that including：
Anemometry, for measuring the current wind speed when wind-driven generator work；
Angle Measuring Equipment, for measuring blade angle；
Multi-disc in pitch control device, with the anemometry, the Angle Measuring Equipment and the wind-driven generator
Blade connects, the rotating speed for controlling the wind-driven generator by controlling the angle of the blade, and according to the current wind
The whole blade angle of velocity modulation enables blade to absorb wind energy to greatest extent to target angle；
Power-measuring device, the current operation power for measuring the wind-driven generator；
Tachometric survey equipment, the rotating speed for measuring the wind-driven generator；
Torque power controller, the fortune for controlling the wind-driven generator according to the current operation power and the rotating speed
Row；
First judgment module, for judging whether the blade angle reaches the target angle, if the blade angle does not have
Have to reach the target angle and then send variable pitch and instruct to the pitch control device, wherein variable pitch instruction refers to obtaining in real time
Current wind speed and the blade angle in current wind speed leeward power generator, while updating the current wind speed and the blade angle
Degree, and the blade angle is adjusted according to the updated current wind speed and the blade angle, until the blade angle
Degree reaches the target angle；If the blade angle reaches the target angle, the torque power controller according to
The current operation power and the rotating speed control the operation of the wind-driven generator.
5. control system as claimed in claim 4, which is characterized in that further include：
Presetting module, the correspondence for presetting wind speed and wind power efficiency, wherein wind power utilization system
Number under current wind speed the wind-driven generator be in specific blade angle obtain absorb wind energy to greatest extent.
6. control system as claimed in claim 5, which is characterized in that the presetting module is presetting wind speed and wind power
When the correspondence of usage factor, corresponding wind power efficiency is different in different wind speed intervals, corresponding target angle
Degree is also different.
7. control system as claimed in claim 4, which is characterized in that further include：
Second judgment module, the current operation work(for judging the wind-driven generator in the wind-driven generator operational process
Whether rate reaches rated power, when the current operation power of the wind-driven generator does not reach the rated power, goes to
Judge whether the blade angle reaches the target angle；When the current operation power of the wind-driven generator reaches the volume
When determining power, variable pitch operation is executed to keep the wind-driven generator to be run under firm power, wherein the firm power
Value of the value equal to the rated power.
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| CN201610131561.4A CN105569920B (en) | 2016-03-08 | 2016-03-08 | A kind of control method and control system of wind-driven generator |
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| CN201610131561.4A CN105569920B (en) | 2016-03-08 | 2016-03-08 | A kind of control method and control system of wind-driven generator |
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| CN105569920B true CN105569920B (en) | 2018-09-04 |
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