CN204239155U - A kind of direct-driving permanent-magnetic wind-driven group variable Rate pitch-controlled system - Google Patents
A kind of direct-driving permanent-magnetic wind-driven group variable Rate pitch-controlled system Download PDFInfo
- Publication number
- CN204239155U CN204239155U CN201420677760.1U CN201420677760U CN204239155U CN 204239155 U CN204239155 U CN 204239155U CN 201420677760 U CN201420677760 U CN 201420677760U CN 204239155 U CN204239155 U CN 204239155U
- Authority
- CN
- China
- Prior art keywords
- input
- variable rate
- direct
- input end
- subtractor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
Landscapes
- Wind Motors (AREA)
Abstract
The utility model provides a kind of direct-driving permanent-magnetic wind-driven group variable Rate pitch-controlled system, comprise LDV technique, first two-input subtractor, second two-input subtractor, derivative unit, master controller, Bian Jiang actuator, wind wheel and direct-drive permanent-magnetism generator, master controller comprises award setting module and variable Rate control module, LDV technique is connected with the first two-input subtractor, first two-input subtractor, award setting module, Bian Jiang actuator is connected successively, Bian Jiang actuator is connected with direct-drive permanent-magnetism generator by wind wheel, direct-drive permanent-magnetism generator is connected with the second two-input subtractor, second two-input subtractor respectively with award setting module, derivative unit, variable Rate control module is connected, derivative unit is connected with variable Rate control module, variable Rate control module is connected with Bian Jiang actuator.The utility model is under different wind regime, and Bian Jiang actuator can both make response fast, extends the working life of Bian Jiang actuator.
Description
Technical field
The utility model relates to wind power generating set control field, particularly a kind of direct-driving permanent-magnetic wind-driven group variable Rate pitch-controlled system.
Background technique
Day by day serious along with the multiple city haze in the whole nation, environmental pollution also more and more receives the concern of people, China generates electricity still now based on thermal power generation, thermal power generation uses coal not only to bring serious burden to environment in a large number, and coal is non-renewable energy resources, be unfavorable for the demand of sustainable development.
Wind energy is more and more subject to people's attention as a kind of clean energy resource, along with the innovation of technology, the cost of wind-power electricity generation is also in continuous reduction, wind-driven power generation control system is as the core of wind power generating set, how to improve wind energy utilization, ensure wind power generating set safe and reliable operation, extending Wind turbines working life is the emphasis that researcher pays close attention to.
At present, Wind turbines output-constant operation during in order to ensure that extraneous wind speed is more than rated wind speed, the control system of Wind turbines adopts variable pitch control, due to the complexity of actual wind regime, easily cause the fluctuation of generated output power, therefore require that variable-pitch control system has capability of fast response, blower fan master controller is once send the order of change propeller pitch angle, become oar controller and must control three servo drivers, make pitch motor arrive specified position with prestissimo.Present stage, have researcher to become oar to variable Rate to control to have carried out Primary Study, power Real-time Feedback is adopted in document " the wind power generating set speed-changing oar-changing distance based on changed power and fuzzy control controls ", using the input of the variance ratio of power deviation and power deviation as FUZZY ALGORITHMS FOR CONTROL, export as becoming oar speed command, but when when emergent power deviation is comparatively large, power deviation rate is lower, export change oar speed too low, variable blade control system cannot make quick response.Document " research and implementation of megawatt-level wind unit electric pitch-changing control system " limits the size of power deviation signal, reduce the fluctuation of Wind turbines output power, when power changes, blade pitch device can respond fast, but below rated wind speed, when blower fan output power is less than rated power, variable Rate change oar is adopted to control to add the complexity of algorithm.
Summary of the invention
In order to solve the problems of the technologies described above, the direct-driving permanent-magnetic wind-driven group variable Rate pitch-controlled system that the utility model provides a kind of structure simple, safe and reliable.
The technological scheme that the utility model solves the problem is: a kind of direct-driving permanent-magnetic wind-driven group variable Rate pitch-controlled system, comprise LDV technique, first two-input subtractor, second two-input subtractor, derivative unit, master controller, Bian Jiang actuator, wind wheel and direct-drive permanent-magnetism generator, described master controller comprises award setting module and variable Rate control module, the output terminal of LDV technique is connected with the first input end of the first two-input subtractor, second input end input rated wind speed of the first two-input subtractor, the output terminal of the first two-input subtractor is connected with the input end of award setting module, the output terminal of award setting module is connected with the input end of Bian Jiang actuator, Bian Jiang actuator is connected with direct-drive permanent-magnetism generator by wind wheel, the output terminal of direct-drive permanent-magnetism generator is connected with the first input end of the second two-input subtractor, the rated power of the second input end input Wind turbines of the second two-input subtractor, the output terminal of the second two-input subtractor respectively with the input end of award setting module, the input end of derivative unit, the input end of variable Rate control module is connected, the output terminal of derivative unit is connected with the input end of variable Rate control module, the output terminal of variable Rate control module is connected with the input end of Bian Jiang actuator.
The beneficial effects of the utility model are: the utility model adopts award setting module and the collaborative work of variable Rate control module, export propeller pitch angle position signal respectively and become oar speed to Bian Jiang actuator and perform change oar, under different wind regime, Bian Jiang actuator can both make response fast, time below rated wind speed, Bian Jiang actuator minimally propeller pitch angle is constant, makes blower fan absorb actual wind power and reaches maximum, keeps optimum tip-speed ratio; Time more than rated wind speed, accelerate according to power deviation and power deviation variance ratio Shi Bian oar actuator, at the uniform velocity or run slowly, decrease the generation of the frequent clockwise and anticlockwise phenomenon of pitch motor caused due to power deviation fuctuation within a narrow range, also reduce the degree of fatigue of Bian Jiang actuator simultaneously, extend the working life of Bian Jiang actuator.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the utility model pitch-controlled system.
Fig. 2 is the load model figure of Tu1Zhong Bian oar actuator.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 1, the utility model comprises LDV technique, first two-input subtractor, second two-input subtractor, derivative unit, master controller 1, Bian Jiang actuator, wind wheel and direct-drive permanent-magnetism generator, described master controller 1 comprises award setting module and variable Rate control module, LDV technique detects wind speed in real time, its output terminal is connected with the first input end of the first two-input subtractor, second input end input rated wind speed of the first two-input subtractor, the output terminal of the first two-input subtractor is connected with the input end of award setting module, the output terminal of award setting module is connected with the input end of Bian Jiang actuator, export propeller pitch angle position signal to Bian Jiang actuator, Bian Jiang actuator is connected with direct-drive permanent-magnetism generator by wind wheel, the output terminal of direct-drive permanent-magnetism generator is connected with the first input end of the second two-input subtractor, the rated power of the second input end input Wind turbines of the second two-input subtractor, the output terminal of the second two-input subtractor respectively with the input end of award setting module, the input end of derivative unit, the input end of variable Rate control module is connected, the output terminal of derivative unit is connected with the input end of variable Rate control module, the output terminal of variable Rate control module is connected with the input end of Bian Jiang actuator, export and become oar rate signal to Bian Jiang actuator.
Need to distinguish speed-changing oar-changing apart from the concept controlled at this, variable Rate of the present utility model becomes oar and is different from generator speed adjustment, and refers to the adjustment of pitch motor speed.
Fig. 2 becomes oar actuator load model in the utility model pitch-controlled system, the load of blower fan mainly contains the tilting moment M of hub centre
topwith yawing moment M
yaw, and tilting moment and yawing moment wave moment M by propeller shank
x1and M
y1cause.Adopt variable Rate change oar to control to reduce the fluctuation of root of blade load, realize the object reducing Wind turbines Bian Jiang actuator fatigue load.
Above-mentioned direct-driving permanent-magnetic wind-driven group variable Rate pitch-controlled system carries out the method becoming oar, comprises the following steps:
1) LDV technique detects actual wind speed V
w.
2) actual wind speed V LDV technique detected
wwith rated wind speed V
wNcarry out difference operation and obtain wind speed deviate Δ V, Δ V=V
w?V
wN, wind speed deviate Δ V inputs in award setting module; Detection computations goes out Wind turbines output power P
e, by output power P
ewith rated power P
wcarry out difference operation and obtain power offset value Δ P, Δ P=P
e?P
w, power offset value Δ P inputs in award setting module;
Wherein: P
e=T
eω
e, wherein ω
efor electric angle frequency, ω
e=n
pω
g, n
pfor power generator electrode logarithm, ω
gfor generator speed; T
e=1.5n
pi
qλ, i
qfor the electric current of generator q axle, λ is the magnetic linkage of permanent magnet; P
w=T
wω
g, P
wbe the rated power of Wind turbines
wherein T
wfor the mechanical input torque of wind energy conversion system, ω
gfor direct-driving permanent magnetic generator speed;
wherein: ρ is air density; R is wind mill rotor radius; θ is propeller pitch angle; Tip speed ratio γ=ω
gr/V
w, C
pfor power coefficient, its representation is C
p(θ, γ)=0.22 [116/ β-0.4 θ-5] exp (-12.5/ β), in formula
3) award setting module judges the size of wind speed deviate Δ V, if Δ V<0, award setting module exports propeller pitch angle position signal θ to Bian Jiang actuator, and Bian Jiang actuator is to become oar speed V=V
maxbecome oar to maximum angle windward, if Δ V>=0, perform next step;
Wherein the formula of propeller pitch angle is:
In formula, V
wNfor rated wind speed, K
p1for scaling factor,
for integration item, K
p, K
ibe respectively ratio and the integral coefficient of PI controller in award setting module.
4) differential process is done to power offset value Δ P and the value of d Δ P/dt after process is sent in variable Rate control module together with power offset value Δ P, award setting module and the collaborative work of variable Rate control module, award setting module exports propeller pitch angle position signal θ to Bian Jiang actuator, variable Rate control module exports and becomes oar speed V to Bian Jiang actuator, variable Rate control module judges the size of d Δ P/dt value, if d Δ P/dt=0, the propeller pitch angle that Bian Jiang actuator keeps present speed change oar to specify to award setting module; If d Δ P/dt>0, Bian Jiang actuator accelerates the propeller pitch angle that change oar is specified to award setting module; If d Δ P/dt<0, the deceleration of Bian Jiang actuator becomes the propeller pitch angle that oar is specified to award setting module.
Wherein: the defining method becoming oar speed V is as follows: be divided into little by power offset value Δ P, in, large three parts, power offset value variance ratio d Δ P/dt is divided into negative large, in negative, negative little, zero, just little, center, honest seven parts, as shown in table 1, power deviation and change oar speed size corresponding to power offset value variance ratio are made form, power offset value Δ P and power offset value variance ratio d Δ P/dt interval range are represented with perunit value, power offset value variance ratio Δ P with the rated power of generator for reference value, power offset value variance ratio d Δ P/dt take 1MW/s as reference value, wherein, the interval range that power offset value Δ P is little is [0, 0.1], in interval range be [0.1, 0.2], large interval range is [0.2, 0.3], the negative large interval range of power deviation variance ratio d Δ P/dt be [?0.1, ?0.05], interval range [in negative ?0.05, ?0.005], negative little interval range be [?0.005, ?0.0005], the interval range of zero is [0.0005, 0.0005], just little interval range is [0.0005, 0.005], the interval range of center is [0.005, 0.05], honest interval range is [0.05, 0.1].When power deviation changing value Δ P is hour, if power offset value variance ratio d Δ P/dt be negative large, negative in, negative little, one in zero, then becoming oar speed is V=V
minif power offset value variance ratio d Δ P/dt is just little, center, just big-and-middle one, then becoming oar speed is V=V
mid; When power deviation changing value Δ P is middle, if power offset value variance ratio d Δ P/dt be negative large, negative in one, then becoming oar speed is V=V
minif power offset value variance ratio d Δ P/dt is negative little, one in zero, then becoming oar speed is V=V
midif power offset value variance ratio d Δ P/dt is just little, center, just big-and-middle one, then becoming oar speed is V=V
max; When power deviation changing value Δ P is large, no matter power deviation variance ratio d Δ P/dt is much, becomes oar speed and be V=V
max.
Table 1
Claims (1)
1. a direct-driving permanent-magnetic wind-driven group variable Rate pitch-controlled system, it is characterized in that: comprise LDV technique, first two-input subtractor, second two-input subtractor, derivative unit, master controller, Bian Jiang actuator, wind wheel and direct-drive permanent-magnetism generator, described master controller comprises award setting module and variable Rate control module, the output terminal of LDV technique is connected with the first input end of the first two-input subtractor, second input end input rated wind speed of the first two-input subtractor, the output terminal of the first two-input subtractor is connected with the input end of award setting module, the output terminal of award setting module is connected with the input end of Bian Jiang actuator, Bian Jiang actuator is connected with direct-drive permanent-magnetism generator by wind wheel, the output terminal of direct-drive permanent-magnetism generator is connected with the first input end of the second two-input subtractor, the rated power of the second input end input Wind turbines of the second two-input subtractor, the output terminal of the second two-input subtractor respectively with the input end of award setting module, the input end of derivative unit, the input end of variable Rate control module is connected, the output terminal of derivative unit is connected with the input end of variable Rate control module, the output terminal of variable Rate control module is connected with the input end of Bian Jiang actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420677760.1U CN204239155U (en) | 2014-11-13 | 2014-11-13 | A kind of direct-driving permanent-magnetic wind-driven group variable Rate pitch-controlled system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420677760.1U CN204239155U (en) | 2014-11-13 | 2014-11-13 | A kind of direct-driving permanent-magnetic wind-driven group variable Rate pitch-controlled system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204239155U true CN204239155U (en) | 2015-04-01 |
Family
ID=52768663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420677760.1U Expired - Fee Related CN204239155U (en) | 2014-11-13 | 2014-11-13 | A kind of direct-driving permanent-magnetic wind-driven group variable Rate pitch-controlled system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204239155U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329224B (en) * | 2014-11-13 | 2017-02-15 | 湖南世优电气股份有限公司 | Variable-rate pitching system and variable-rate pitching method for direct-drive permanent magnet wind generating set |
| CN109737007A (en) * | 2018-12-21 | 2019-05-10 | 明阳智慧能源集团股份公司 | A kind of wind generating set yaw transfinites IPC variable Rate closing method |
| CN112412697A (en) * | 2019-08-23 | 2021-02-26 | 新疆金风科技股份有限公司 | Variable pitch demand rate correction method and device and wind generating set |
-
2014
- 2014-11-13 CN CN201420677760.1U patent/CN204239155U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329224B (en) * | 2014-11-13 | 2017-02-15 | 湖南世优电气股份有限公司 | Variable-rate pitching system and variable-rate pitching method for direct-drive permanent magnet wind generating set |
| CN109737007A (en) * | 2018-12-21 | 2019-05-10 | 明阳智慧能源集团股份公司 | A kind of wind generating set yaw transfinites IPC variable Rate closing method |
| CN112412697A (en) * | 2019-08-23 | 2021-02-26 | 新疆金风科技股份有限公司 | Variable pitch demand rate correction method and device and wind generating set |
| CN112412697B (en) * | 2019-08-23 | 2023-04-07 | 新疆金风科技股份有限公司 | Variable pitch demand rate correction method and device and wind generating set |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104329224A (en) | Variable-rate pitching system and variable-rate pitching method for direct-drive permanent magnet wind generating set | |
| Matayoshi et al. | Control strategy of PMSG based wind energy conversion system under strong wind conditions | |
| CN105986961A (en) | Power optimal control method for variable-speed and variable-pitch wind turbine | |
| CN104612898B (en) | A kind of wind electricity change paddle is away from Multivariable Fuzzy NN-PID Control Method | |
| CN104074679B (en) | All-wind-speed limited-power optimal control method for variable-speed and variable-pitch wind generation set | |
| CN105673325A (en) | Individual pitch control method of wind driven generator set based on RBF neural network PID | |
| Bystryk et al. | Small wind turbine power control in intermittent wind gusts | |
| Taoussi et al. | Low-speed sensorless control for wind turbine system | |
| CN204239155U (en) | A kind of direct-driving permanent-magnetic wind-driven group variable Rate pitch-controlled system | |
| Cho et al. | Development and experimental verification of counter-rotating dual rotor/dual generator wind turbine: Generating, yawing and furling | |
| Ayadi et al. | Sliding mode approach for blade pitch angle control wind turbine using PMSG under DTC | |
| CN202157900U (en) | Wind turbine generator paddle changing control system based on internal model proportion integration differentiation (PID) | |
| CN102900603B (en) | Variable pitch controller design method based on finite time non-crisp/guaranteed-cost stable wind turbine generator set | |
| Dou et al. | An adjustable pitch control system in a large wind turbine based on a fuzzy-PID controller | |
| Qi et al. | PID control in adjustable-pitch wind turbine system based on fuzzy control | |
| Pindoriya et al. | PMSG based wind energy generation system: Energy maximization and its control | |
| Barambones et al. | Adaptive robust control to maximizing the power generation of a variable speed wind turbine | |
| Yao et al. | RBF neural network based self-tuning PID pitch control strategy for wind power generation system | |
| Li et al. | A fuzzy logical MPPT control strategy for PMSG wind generation systems | |
| Bansal et al. | Blade pitch angle and tip speed ratio control schemes for constant power generation of WECS | |
| Xia et al. | A new pitch control method for large scale wind turbine based on ADRC | |
| Le-peng et al. | Simulation for strategy of maximal wind energy capture of doubly fed induction generators | |
| CN204961156U (en) | Feather wind -force motor regulation and control system | |
| Zhang et al. | A new pitch control strategy for wind turbines base on quasi-sliding mode control | |
| Fard et al. | Fuzzy logic based pitch angle controller for variable speed wind turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20161113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |