CN102889177B - Variable pitch angle structure of H-shaped perpendicular shaft wind power generation system and control method for variable pitch angle structure - Google Patents

Variable pitch angle structure of H-shaped perpendicular shaft wind power generation system and control method for variable pitch angle structure Download PDF

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CN102889177B
CN102889177B CN201210323899.1A CN201210323899A CN102889177B CN 102889177 B CN102889177 B CN 102889177B CN 201210323899 A CN201210323899 A CN 201210323899A CN 102889177 B CN102889177 B CN 102889177B
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wind
blade
pitch angle
executing
area maximum
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CN102889177A (en
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刘立群
刘春霞
孔屹刚
郑旭阳
杨国韬
王静思
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Taiyuan University of Science and Technology
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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
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

Abstract

The invention discloses a variable pitch angle structure of an H-shaped perpendicular shaft wind power generation system and a control method for the variable pitch angle structure, and belongs to the technical field of wind power generation. Blades of a fan are rotatable; a position sensor is arranged on the blades of the fan; and a wind direction and wind speed sensor is arranged at the upper end of a central vertical column. The control method comprises the following steps of: (1) setting a preliminary value; (2) regularly acquiring a signal; (3) judging whether acquired wind speed is greater than cut-out wind speed, if so, stopping a system, otherwise, executing a step (4); (4) judging whether a position angle theta is smaller than 30 degrees, if so, converting a pitch angle alpha into 3 degrees, and executing a step (10), otherwise, executing a step (5); (5) judging whether theta is less than 150 degrees, if so, making alpha be constant, and executing the step (10), otherwise, executing a step (6); (6) judging whether theta is less than 180 degrees, if so, converting alpha into 0 degree, and executing the step (10), otherwise, executing a step (7); judging whether theta is less than 210 degrees, if so, converting alpha into -6 degrees, and executing the step (10), otherwise, executing a step (8); (8) judging whether theta is less than 330 degrees, if so, making alpha be constant, and executing the step (10), otherwise, executing a step (9); judging whether theta is less than 360 degrees, if so, converting alpha into 0 degrees, and executing the step (10), otherwise, subtracting 360 degrees from theta, and returning to the step (2); (10) calculating the angle theta of each blade, determining alpha, and executing a step (11); and (11) judging whether the wind speed is greater than cut-in wind speed, if so, returning to the step (2), otherwise, stopping the program.

Description

H type vertical axis wind power generation system feather corner structure and controlling method
Technical field
The invention belongs to technical field of wind power generation, be specifically related to a kind of H type vertical axis wind power generation system feather corner structure and controlling method.
Background technique
At present, the development and utilization of renewable energy sources obtains the concern of national governments day by day, and the technology that converts wind energy to electric energy by wind-powered electricity generation unit at home and abroad all takes much count of.According to Joint Research Centre of European Union prediction in 2004, to the end of this century, the ratio of wind-power electricity generation in All Around The World energy supply will exceed 10%.H type vertical axis wind power generation system have noise little, vibrate little, delivery efficiency is high, with the advantage such as high-rise good knitting, it is combined with urban skyscraper and will become the important component part in low-carbon (LC) city, but it is poor that its shortcoming is self-startup ability, therefore, research provides that a kind of to be suitable for the controlling method that under various wind speed situations system all has good self-startup ability and high delivery efficiency be very necessary.
Figure 1 shows that prior art H type vertical axis wind power generation system structural representation, be generator 2, base 3 are installed in the bottom of center stand column 1 and be arranged on braking device 4, data acquisition and control module 5 and the energy consumption resistor 6 in base 3, the middle part of center stand column 1 is provided with the upper fixed connecting rod 7' of X-shape, 7'', 7''' and lower fixed connecting rod 8', 8'', 8''', on the end points of upper lower connecting rod 7', 7'', 7''' and 8', 8'', 8''', is fixedly connected with respectively with six fan blade 9', 9'', 9''', 9'''', 9''''', 9''''''.The propeller pitch angle that this spline structure forms is fixed, and its shortcoming is that system self-startup ability is poor, output power is low.
Summary of the invention
The object of the invention is to provide a kind of new structure and controlling method of variable oar elongation, can effectively overcome the shortcoming that prior art exists.
The present invention is achieved in that its structure as shown in Figure 2, is including center stand column 1, be arranged on the generator 2 of center stand column 1 bottom, base 3, and be arranged on the braking device 4 in base 3, data acquisition and control module 5, and energy consumption resistor 6, the upper fixed connecting rod 7' of X-shape is installed at the middle part of center stand column 1, 7'', 7''' and lower fixed connecting rod 8', 8'', 8''', at upper fixed connecting rod 7', 7'', on each end points of 7''', be separately installed with bearing 12', 12'', 12''', 12'''', 12''''', 12'''''', each bearing respectively with corresponding vertically arranged rotating shaft 11', 11'', 11''', 11'''', 11''''', 11'''''' matches, and is separately installed with corresponding fan blade 9' in every rotating shaft, 9'', 9''', 9'''', 9''''', 9'''''', in the bottom of every rotating shaft respectively be arranged on lower connecting rod 8', 8'', stepper motor 13' on 8''', 13'', 13''', 13'''', 13''''', the rotating shaft of 13'''''' is connected, and is separately installed with position transducer 14' on each fan blade, 14'', 14''', 14'''', 14''''', 14'''''', be provided with on the top of center stand column 1 on the H type vertical axis wind power generation system feather corner structure basis of wind direction and wind velocity sensor 15.
A controlling method for H type vertical axis wind power generation system feather corner structure, as shown in Figure 3, is characterized in that the operating procedure of described feather angle controlling method is:
The angular position theta of the blade of the wind-exposuring area maximum of step 1, setting upwind is 0 °, and propeller pitch angle α is 0 °, incision wind speed 2～3 meter per seconds, and cut-out wind speed 20～25 meter per seconds, the initial timing time is 0.1～0.5 second, closes braking device 4;
Step 2, by data acquisition and control module 5 timing acquiring wind directions, wind velocity signal and fan blade position signal;
Step 3, judge whether wind speed exceeds the cut-out wind speed of setting, is, rest schedule, opens braking device, access energy consumption resistor 6, no, execution step four;
Step 4, judge whether the angular position theta of the blade of wind-exposuring area maximum is less than 30 °, is, stepper motor 13 corresponding to blade of controlling wind-exposuring area maximum makes propeller pitch angle α become 3 ° from 0 °, and execution step ten is no, execution step five;
Step 5, judge whether the angular position theta of the blade of wind-exposuring area maximum is less than 150 °, is, propeller pitch angle α remain 3 ° constant, execution step ten, no, execution step six;
Step 6, judge whether the angular position theta of the blade of wind-exposuring area maximum is less than 180 °, is, stepper motor 13 corresponding to blade of controlling wind-exposuring area maximum makes propeller pitch angle α become 0 ° from 3 °, and execution step ten is no, execution step seven;
Step 7, judge whether the angular position theta of the blade of wind-exposuring area maximum is less than 210 °, is, stepper motor 13 corresponding to blade of controlling wind-exposuring area maximum makes propeller pitch angle α become-6 ° from 0 °, and execution step ten is no, execution step eight;
Step 8, judge whether the angular position theta of the blade of wind-exposuring area maximum is less than 330 °, is, propeller pitch angle α remain-6 ° constant, execution step ten, no, execution step nine;
Step 9, judge whether the angular position theta of the blade of wind-exposuring area maximum is less than 360 °, is, stepper motor 13 corresponding to blade of controlling wind-exposuring area maximum makes propeller pitch angle α become 0 ° from-6 °, execution step ten, no, angular position theta subtracts 360 °, returns to step 2;
Step 10, calculate the angular position theta of other blade, determine its propeller pitch angle α;
Step 11, judge whether wind speed exceedes the incision wind speed of setting, is, returns to step 2, no, rest schedule.
The present invention compared with prior art, have the following advantages and good effect: (1) compared with the prior art, due to the fan blade stationary axle of the H type vertical axis wind power generation system stepper motor that has been connected, in controlling method, adopt according to the method for position angle control fan blade propeller pitch angle, effectively improve self-startup ability and the tangential force of system, improved the delivery efficiency of system; (2) simple in structure, control is convenient, with low cost, cost performance is high.
Accompanying drawing explanation
Fig. 1 is prior art H type vertical axis wind power generation system structural representation;
Fig. 2 is H type vertical axis wind power generation system structural representation of the present invention;
Fig. 3 is controlling method flow chart of the present invention;
Fig. 4 is the tangential force of closing of prior art generation;
Fig. 5 be the present invention produce close tangential force;
In figure: 1-center stand column, 2-generator, 3-base, 4-braking device, 5-data acquisition and control module, 6-energy consumption resistor, 7', 7'', 7'''-upper fixed connecting rod, 8', 8'', 8'''-lower fixed connecting rod, 9', 9'', 9''', 9'''', 9''''', 9''''''-fan blade, 10-ground, 11', 11'', 11''', 11'''', 11''''', 11''''''-rotating shaft, 12', 12'', 12''', 12'''', 12''''', 12''''''-bearing, 13', 13'', 13''', 13'''', 13''''', 13''''''-stepper motor, 14-position transducer, 15-wind direction and wind velocity sensor.
θ/rad-position angle/radian, Ftt/N-close tangential force/ox
Embodiment
As shown in Figure 2, now take the H type wind-power generating system selected as example, wherein the rated power of generator 2 is 50W, voltage rating is 50V, and rated current is 1A, and fixing fan blade length is 1.5m, variable oar elongation fan blade length is 0.8m, width is 0.5m, and the incision wind speed of setting is 3m/s, and cut-out wind speed is 20m/s.
Take actual wind speed as 5m/s, the timing sampling time be 0.1 second for example, the position angle that controlling method step is, set the blade of the wind-exposuring area maximum of upwind is 0 °, propeller pitch angle is 0 °, incision wind speed 3 meter per seconds, cut-out wind speed 20 meter per seconds, close braking device 4, execution step two; Step 2: gather wind direction, wind speed and fan blade position signal, execution step three; Step 3: wind speed is less than cut-out wind speed, execution step four; Step 4: position angle is less than 30 degree, control step motor 13 makes propeller pitch angle become 3 °, execution step ten from 0 °; Step 10: according to the direction of generator rotation, fan blade propeller pitch angle successively strain is 3 °, 3 °, 0 ° ,-6 ° ,-6 °, execution step 11; Step 11: be greater than incision wind speed, return to step 2.
Its operation result compared with the prior art as shown in Figure 4,5.
The present invention can improve self-startup ability and system output power in the situation that wind speed is lower, and has reduced system output vibration.

Claims (1)

1. a controlling method for H type vertical axis wind power generation system feather corner structure is to include center stand column (1), be arranged on the generator (2) of center stand column (1) bottom, base (3), and be arranged on the braking device (4) in base (3), data acquisition and control module (5), and energy consumption resistor (6), the upper fixed connecting rod (7' of X-shape is installed at the middle part of center stand column (1), 7'', 7''') with lower fixed connecting rod (8', 8'', 8'''), at upper fixed connecting rod (7', 7'', on each end points 7'''), be separately installed with bearing (12', 12'', 12''', 12'''', 12''''', 12''''''), each bearing respectively with corresponding vertically arranged rotating shaft (11', 11'', 11''', 11'''', 11''''', 11'''''') match, in every rotating shaft, be separately installed with corresponding fan blade (9', 9'', 9''', 9'''', 9''''', 9''''''), in the bottom of every rotating shaft respectively be arranged on lower connecting rod (8', 8'', stepper motor (13' 8'''), 13'', 13''', 13'''', 13''''', rotating shaft 13'''''') is connected, and is separately installed with position transducer (14' on each fan blade, 14'', 14''', 14'''', 14''''', 14''''''), be provided with on the top of center stand column (1) on the H type vertical axis wind power generation system feather corner structure basis of wind direction and wind velocity sensor (15).The operating procedure that it is characterized in that described feather angle controlling method is:
The angular position theta of the blade of the wind-exposuring area maximum of step 1, setting upwind is 0 °, and propeller pitch angle α is 0 °, incision wind speed 2～3 meter per seconds, and cut-out wind speed 20～25 meter per seconds, the initial timing time is 0.1～0.5 second, closes braking device (4);
Step 2, by data acquisition and control module (5) timing acquiring wind direction, wind velocity signal and fan blade position signal;
Step 3, judge whether wind speed exceeds the cut-out wind speed of setting, is, rest schedule, opens braking device, access energy consumption resistor (6), no, execution step four;
Step 4, judge whether the angular position theta of the blade of wind-exposuring area maximum is less than 30 °, is, stepper motor (13) corresponding to blade of controlling wind-exposuring area maximum makes propeller pitch angle α become 3 ° from 0 °, and execution step ten is no, execution step five;
Step 5, judge whether the angular position theta of the blade of wind-exposuring area maximum is less than 150 °, is, propeller pitch angle α remain 3 ° constant, execution step ten, no, execution step six;
Step 6, judge whether the angular position theta of the blade of wind-exposuring area maximum is less than 180 °, is, stepper motor (13) corresponding to blade of controlling wind-exposuring area maximum makes propeller pitch angle α become 0 ° from 3 °, and execution step ten is no, execution step seven;
Step 7, judge whether the angular position theta of the blade of wind-exposuring area maximum is less than 210 °, is, stepper motor (13) corresponding to blade of controlling wind-exposuring area maximum makes propeller pitch angle α become-6 ° from 0 °, and execution step ten is no, execution step eight;
Step 8, judge whether the angular position theta of the blade of wind-exposuring area maximum is less than 330 °, is, propeller pitch angle α remain-6 ° constant, execution step ten, no, execution step nine;
Step 9, judge whether the angular position theta of the blade of wind-exposuring area maximum is less than 360 °, is, stepper motor (13) corresponding to blade of controlling wind-exposuring area maximum makes propeller pitch angle α become 0 ° from-6 °, execution step ten, no, angular position theta subtracts 360 °, returns to step 2;
Step 10, calculate the angular position theta of other blade, determine its propeller pitch angle α;
Step 11, judge whether wind speed exceedes the incision wind speed of setting, is, returns to step 2, no, rest schedule.
CN201210323899.1A 2012-09-05 2012-09-05 Variable pitch angle structure of H-shaped perpendicular shaft wind power generation system and control method for variable pitch angle structure Active CN102889177B (en)

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CN104806448A (en) * 2015-05-15 2015-07-29 长沙理工大学 Re-cut-in control method for wind driven generator based on wind speed forecasting
CN105826952A (en) * 2016-05-20 2016-08-03 上海电气分布式能源科技有限公司 Power supply access device and protection method thereof
CN105863962A (en) * 2016-06-27 2016-08-17 长沙理工大学 Method for controlling recut-in of wind-driven power generators on basis of wind speed and time combination dead zones

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CN102116264A (en) * 2010-07-05 2011-07-06 杨寿生 Megawatt-stage vertical shaft wind power generator with adjustable attack angle
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