CN105927471A - Low-wind-speed start control system and low-wind-speed start control method for hydraulic wind turbine generator system - Google Patents
Low-wind-speed start control system and low-wind-speed start control method for hydraulic wind turbine generator system Download PDFInfo
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- CN105927471A CN105927471A CN201610246947.XA CN201610246947A CN105927471A CN 105927471 A CN105927471 A CN 105927471A CN 201610246947 A CN201610246947 A CN 201610246947A CN 105927471 A CN105927471 A CN 105927471A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000006073 displacement reaction Methods 0.000 claims abstract description 48
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000010248 power generation Methods 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 239000002828 fuel tank Substances 0.000 claims description 19
- 239000003921 oil Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
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
- F03D7/026—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for starting-up
-
- 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
-
- 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
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a low-wind-speed start control system for a hydraulic wind turbine generator system, and a control method thereof. The control system comprises a wind turbine part, a hydraulic transmission control part and a power generation control part, wherein the hydraulic transmission control part is provided with a low-wind-speed start controller, a front-opening four-side slide valve and a detection device. The control method thereof comprises the following steps: an opening degree of the front-opening four-side slide valve and a swinging angle of a variable displacement motor are controlled through the low-wind-speed start controller and by the aid of the detection device, and the low-wind-speed start controller controls the front-opening four-side slide valve to be located at an upper position, and a load of a constant displacement pump is reduced to reduce a start wind speed when the wind speed is lower than the minimum start wind speed; and the low-wind-speed start controller controls the front-opening four-side slide valve to be slowly and stably switched to a lower position to work when a rotational speed of the wind turbine generator system achieves the lowest running rotational speed, so that the system gradually enters a working phase to complete low-wind-speed start. According to the control system and the control method, which are disclosed by the invention, the problem of low-wind-speed start of the system is solved, an impact on the system is low, and wind energy utilization rate and electric energy quality are improved.
Description
Technical field
The invention belongs to technical field of wind power generation, relate to the main transmission of hydraulic wind power generating set, replace gear train assembly and the direct-drive type drive system of conventional fan by hydraulic drive and control system, start system and control method particularly to a kind of low wind speed of hydraulic wind power generating set.
Background technology
Hydraulic wind power generating set receives extensive concern as a kind of wind power generation equipment.Hydraulic wind power generating set is mainly made up of systems such as wind energy conversion system, dosing pump-variable displacement motor Hydraulic Main drive system, excitation synchronous generators, with traditional double-fed type and the fault rate that reduces unit compared with directly driving type, alleviate unit weight, effectively inhibit the fluctuations in wind speed impact on power generating quality.
The startability of wind energy conversion system is to weigh an important indicator of unit performance, the startability of wind power generating set is except relevant to the inertia of wind wheel self, it is also contemplated that the rotary inertia of the moment of friction between power transmission shaft to be overcome and bearing and motor, the low wind speed startability of wind power generating set directly affects unit wind energy utilization and combination property.The Starting mode of different blower fans is different: the fan blade number of high tip speed ratio is less, sometimes for power-assisted during startup；Stall Type blower fan starts with motor mode；Speed-changing draught fan starts by the way of sizing mixing.Hydraulic wind power generating set needs also exist for a kind of method solving low wind speeds difficulty in starting.
Find through retrieval, Chinese patent CN200910188890 discloses a kind of high-efficiency wind driven generator setting threshold wind velocity and blade thereof.This invention reduces threshold wind velocity by the structure changing blade, but when losing a part of generated output after fan starting, reduces wind energy utilization.
Find through retrieval again, Chinese patent CN201020261766 discloses a kind of low wind-speed starting wind power generator.This invention changes the groove of stator department into oblique design, to reduce the detent torque of rotor portions, reduces threshold wind velocity.But this invention when generator speed is higher compared with the electromotor of other forms generated energy less, and structure is complicated, and cost is of a relatively high.
Also finding through retrieval, Chinese patent CN201420784255 discloses a kind of low wind speed of hydraulic wind power generating set and starts system.This system, by using electromagnetic proportion throttle to complete the switching of Hydraulic Main drive system oil circuit, reduces the threshold wind velocity of wind power generating set.The method utilizes the throttling action of electromagnetic proportion throttle, but in handoff procedure, hydraulic system is had certain impact.
Summary of the invention
In order to solve the technical problem of above-mentioned existence, the present invention proposes a kind of low wind speed of hydraulic wind power generating set and starts system and method, for quick, smooth starting wind generator system at low wind speeds.This system reduces the impact in start-up course to system while hydraulic wind power generating set can be made to start at a lower wind speed, improve the reliability of system, and make control process become simpler reliably.
The present invention is achieved by the following technical solutions:
A kind of low wind speed of hydraulic wind power generating set starts control system, and including wind energy conversion system part, hydraulic pressure drive control system part and power generation control section, described wind energy conversion system part includes air velocity transducer, wind wheel, the first power transmission shaft, the first torque and speed sensors；Described hydraulic pressure drive control system part includes that dosing pump, the first pressure duct, the first check valve, the second check valve, overflow valve, slippage pump, the first fuel tank, first flow sensor, low wind speed start controller, relief valve, positive opening four-side, the second fuel tank, variable displacement motor, angular displacement sensor, second flow sensor, the second pressure duct, the second torque and speed sensors, second driving shaft, low pressure line；Described power generation control section includes electromotor, multifunction instrument, electrical network；Described wind wheel is connected by the first power transmission shaft with dosing pump, and arranges the first torque and speed sensors on the first power transmission shaft, is provided with air velocity transducer near wind wheel；Dosing pump inlet port is from low pressure oil way oil suction, and dosing pump force feed mouth is by the first pressure duct output hydraulic oil, and arranges flow transducer on the first pressure duct；First pressure duct is connected with the first check valve, relief valve, positive opening four-side respectively；The P mouth of positive opening four-side is connected with dosing pump by the first pressure duct, and T mouth blocks, and A mouth and the second fuel tank are connected, and B mouth is connected with variable displacement motor by the second pressure duct；Second flow sensor it is disposed with on second pressure duct；Variable displacement motor oil-in is from the second pressure duct oil suction, variable displacement motor oil return opening is connected with low pressure line, variable displacement motor and electromotor are coaxially connected through second driving shaft, and on second driving shaft, arrange the second torque and speed sensors, electromotor electricity can be delivered to electrical network, installs multifunction instrument between electromotor and electrical network；Angular displacement sensor is arranged in variable displacement motor；Low pressure line is connected with relief valve, the second check valve, dosing pump respectively；Slippage pump inlet port and the first fuel tank are connected, and slippage pump force feed mouth is connected with the first check valve, the second check valve, overflow valve respectively；Overflow valve is connected across between slippage pump and the first fuel tank；Relief valve is connected across between the first pressure duct and low pressure line；Low wind speed starts controller input and is connected with air velocity transducer, the first torque and speed sensors, first flow sensor, angular displacement sensor, second flow sensor, the second torque and speed sensors and multifunction instrument respectively, and low wind speed starts controller output end and is connected with positive opening four-side, variable displacement motor respectively.
A kind of low wind speed of hydraulic wind power generating set starts control method, the method starts controller coordinate by means of detection device by low wind speed and controls opening degree and the variable displacement motor pivot angle of positive opening four-side, making wind power generating set realize quick and stable at low wind speeds to start, idiographic flow is as follows:
A) by air velocity transducer collection wind velocity signal, low wind speed startup controller judges now whether wind speed meets the startup requirement of low wind speed, if meeting low wind speed entry condition, unit normally starts, the lowest wind speed starts the controller positive opening four-side of control and slowly, is steadily switched to upper work, fluid in first pressure duct returns the second fuel tank through positive opening four-side, alleviate starting load, accelerate the rotating speed of dosing pump；
B) low wind speed starts the controller tach signal by the first torque and speed sensors collection dosing pump, judge whether dosing pump meets minimum operation rotation speed requirements, requiring if meeting, low wind speed starts the controller positive opening four-side of control and slowly, is steadily switched to the next work, control variable motor pivot angle is in maximum simultaneously, to increase output torque, otherwise positive opening four-side continues to keep upper work；
C) low wind speed starts the controller tach signal by the second torque and speed sensors collection variable displacement motor, and variable displacement motor ramps up, and completes low wind speed start-up course when variable displacement motor output speed reaches unit when the startup of minimum wind speed requires.
Owing to using technique scheme, the present invention compared with prior art, has a following beneficial effect:
1, the present invention has two control variable, the opening degree of the most positive opening four-side and variable displacement motor pivot angle, and both are mutually coordinated, makes low wind speed start-up course more flexible, reduces the threshold wind velocity of wind power generating set simultaneously, improve wind energy utilization；
2, the present invention is in low wind speed start-up course, uses positive opening four-side, it is achieved mild switching control, reduces the impact to system, improves the quality of power supply and the working life of system of wind power generating set.
The present invention utilizes the positive opening four-side feature without dead band in handoff procedure, solves, by positive opening four-side, the problem that the low wind speed of unit starts, solves shock problem present in low wind speed start-up course simultaneously；Unit durability is also improved while improving unit wind energy utilization, the quality of power supply.
Accompanying drawing explanation
Fig. 1 is Hydraulic System Principle and the hardware configuration system figure of the present invention.
Fig. 2 is the control system schematic diagram of the present invention.
Fig. 3 is the workflow diagram of the present invention.
Detailed description of the invention
Hereinafter, with reference to the accompanying drawings of embodiments of the invention.
Below in conjunction with the accompanying drawings the present invention is described in further detail.
As shown in Figure 1 and Figure 2, hydraulic wind power generating set low wind speed startup system is made up of wind energy conversion system part I, hydraulic pressure drive control system part ii and power generation control section III.
Wind energy conversion system part I mainly includes air velocity transducer 1, wind wheel the 2, first power transmission shaft the 3, first torque and speed sensors 4；Hydraulic pressure drive control system part ii mainly includes that dosing pump the 5, first pressure duct the 6, first check valve the 7, second check valve 8, overflow valve 9, slippage pump the 10, first fuel tank 11, first flow sensor 12, low wind speed start controller 13, relief valve 14, positive opening four-side the 15, second fuel tank 16, variable displacement motor 17, angular displacement sensor 18, second flow sensor the 19, second pressure duct the 20, second torque and speed sensors 21, second driving shaft 22, low pressure line 26；Power generation control section III mainly includes electromotor 23, multifunction instrument 24, electrical network 25.
Wind wheel 2 is connected by the first power transmission shaft 3 with dosing pump 5, and arranges the first torque and speed sensors 4 on the first power transmission shaft 3, is provided with air velocity transducer 1 near wind wheel 2；Dosing pump 5 inlet port exports hydraulic oil by the first pressure duct 6 from low pressure oil way 26 oil suction, dosing pump 5 force feed mouth, and arranges flow transducer 12 on the first pressure duct 6；First pressure duct 6 is connected with the first check valve 7, relief valve 14, positive opening four-side 15 respectively；Positive opening four-side 15 is connected with first pressure duct the 6, second pressure duct 20 respectively, the P mouth of positive opening four-side 15 is connected with dosing pump 5 with by the first pressure duct 6, T mouth blocks, and A mouth and the second fuel tank 18 are connected, and B mouth is connected with variable displacement motor 17 by the second pressure duct 20；It is disposed with second flow sensor 19 on second pressure duct 20；Variable displacement motor 17 oil-in is from pressure duct 20 oil suction, variable displacement motor 17 oil return opening is connected with low pressure line 26, variable displacement motor 17 and electromotor 23 are coaxially connected through second driving shaft 22, and on second driving shaft 22, arrange the second torque and speed sensors 21, electromotor 23 electricity is delivered to electrical network 25, installs multifunction instrument 24 between electromotor 23 and electrical network 25；Angular displacement sensor 18 is arranged in variable displacement motor 17；Low pressure line 26 is connected with relief valve the 14, second check valve 8, dosing pump 5 respectively；Slippage pump 10 inlet port and the first fuel tank 11 are connected, and slippage pump 10 force feed mouth is connected with first check valve the 7, second check valve 8, overflow valve 9 respectively；Overflow valve 9 is connected across between slippage pump 10 and the first fuel tank 11；Relief valve 14 is connected across between the first pressure duct 6 and low pressure line 26；Low wind speed starts controller 13 input and is connected with air velocity transducer the 1, first torque and speed sensors 4, first flow sensor 12, angular displacement sensor 18, second flow sensor the 19, second torque and speed sensors 21 and multifunction instrument 24 respectively, and low wind speed starts controller 13 outfan and is connected with positive opening four-side 15, variable displacement motor 17 respectively.
Low wind speed starts controller 13 and gathers wind velocity signal by air velocity transducer 1, judge now whether wind speed meets low wind speed entry condition, if meeting low wind speed entry condition, unit normally starts, the lowest wind speed startup controller 13 controls positive opening four-side 15 and slowly, is steadily switched to upper work, fluid in first pressure duct 6 is through 15 times the second fuel tanks 16 of positive opening four-side, reduce the pressure in the first pressure duct 6, thus alleviate starting load, accelerate the rotating speed of dosing pump 5.Low wind speed starts controller 13 and is gathered signal judged whether the rotating speed of dosing pump 5 meets minimum operation rotation speed requirements by the first torque and speed sensors 4, first flow sensor 12, second flow sensor 19, multi-function multimeter 24 respectively, requiring if meeting, low wind speed startup controller 13 controls positive opening four-side 15 and slowly, is steadily switched to the next work, control variable motor 17 pivot angle is in maximum simultaneously, to increase output torque, now the fluid in the first pressure duct 6 drives variable displacement motor 17 to rotate through positive opening four-side 15；If the rotating speed of dosing pump 5 is unsatisfactory for minimum operation rotation speed requirements, then positive opening four-side 15 continues to keep upper work.Low wind speed is started controller 13 and is gathered the tach signal of variable displacement motor 17 by the second torque and speed sensors 22, and variable displacement motor 17 ramps up, and completes low wind speed start-up course when variable displacement motor 17 output speed reaches unit when the startup of minimum wind speed requires.
The low wind speed of hydraulic wind power generating set starts the control method of control system, as it is shown on figure 3, its flow process is as follows:
A) low wind speed starts controller 13 and gathers wind velocity signal by air velocity transducer 1 and judge now whether wind speed meets low wind speed and start requirement, if meeting low wind speed entry condition, unit normally starts, the lowest wind speed startup controller 13 controls positive opening four-side 15 and slowly, is steadily switched to upper work, fluid in first pressure duct 6 is through 15 times the second fuel tanks 16 of positive opening four-side, alleviate starting load, accelerate the rotating speed of dosing pump 5；
B) low wind speed is started controller 13 and is gathered the tach signal of dosing pump 5 by the first torque and speed sensors 4, judge whether dosing pump 5 meets minimum operation rotation speed requirements, requiring if meeting, low wind speed startup controller 13 controls positive opening four-side 15 and slowly, is steadily switched to the next work, control variable motor 17 pivot angle is in maximum simultaneously, to increase output torque, otherwise positive opening four-side 15 continues to keep upper work；
C) low wind speed is started controller 13 and is gathered the tach signal of variable displacement motor 17 by the second torque and speed sensors 22, and variable displacement motor 17 ramps up, when variable displacement motor 17 output speed reach minimum wind speed start require time unit complete low wind speed start-up course.
Protection scope of the present invention is defined by the claims.The present invention can be made various amendment or replace on an equal basis in the essence of the present invention and protection domain by those skilled in the art, and this amendment or equal replacement also should be regarded as being within the scope of the present invention.
Claims (2)
1. the low wind speed of hydraulic wind power generating set start a control system, including wind energy conversion system part (I),
Hydraulic pressure drive control system part (II) and power generation control section (III), it is characterised in that
Described wind energy conversion system part include air velocity transducer (1), wind wheel (2), the first power transmission shaft (3), first
Torque and speed sensors (4)；
Described hydraulic pressure drive control system part includes dosing pump (5), the first pressure duct (6), the first check valve
(7), the second check valve (8), overflow valve (9), slippage pump (10), the first fuel tank (11), first-class
Quantity sensor (12), low wind speed start controller (13), relief valve (14), positive opening four-side (15),
Second fuel tank (16), variable displacement motor (17), angular displacement sensor (18), second flow sensor (19),
Second pressure duct (20), the second torque and speed sensors (21), second driving shaft (22), low pressure line
(26)；
Described power generation control section includes electromotor (23), multifunction instrument (24), electrical network (25)；
Described wind wheel (2) is connected by the first power transmission shaft (3) with dosing pump (5), and at the first power transmission shaft
(3) upper layout the first torque and speed sensors (4), is provided with air velocity transducer (1) near wind wheel (2)；
Dosing pump (5) inlet port passes through the first pressure duct from low pressure oil way 26 oil suction, dosing pump (5) force feed mouth
(6) output hydraulic oil, and on the first pressure duct (6), arrange flow transducer (12)；First high pressure
Pipeline (6) is connected with the first check valve (7), relief valve (14), positive opening four-side (15) respectively；
(P) mouth of positive opening four-side (15) is connected with dosing pump (5) by the first pressure duct (6),
(T) mouth blocks, and (A) mouth and the second fuel tank 18 are connected, (B) mouth by the second pressure duct (20) with
Variable displacement motor (17) is connected；Second flow sensor (19) it is disposed with on second pressure duct (20)；Become
Amount motor (17) oil-in is from the second pressure duct (20) oil suction, and variable displacement motor (17) oil return opening is with low
Pressure pipe road (26) is connected, and variable displacement motor (17) and electromotor (23) are coaxial through second driving shaft (22)
Connect, and at second driving shaft (22) upper layout the second torque and speed sensors (21), electromotor (23)
Electricity is delivered to electrical network (25), installs multifunction instrument (24) between electromotor (23) and electrical network (25)；
Angular displacement sensor (18) is arranged in variable displacement motor (17)；Low pressure line (26) respectively with relief valve (14),
Second check valve (8), dosing pump (5) are connected；Slippage pump (10) inlet port and the first fuel tank (11) phase
Even, slippage pump (10) force feed mouth respectively with the first check valve (7), the second check valve (8), overflow valve (9)
It is connected；Overflow valve (9) is connected across between slippage pump (10) and the first fuel tank (11)；Relief valve (14)
It is connected across between the first pressure duct (6) and low pressure line (26)；It is defeated that low wind speed starts controller (13)
Enter end respectively with air velocity transducer (1), the first torque and speed sensors (4), first flow sensor (12),
Angular displacement sensor (18), second flow sensor (19), the second torque and speed sensors (21) and many
Function instrument (24) be connected, low wind speed start controller (13) outfan respectively with positive opening four-side
(15), variable displacement motor (17) is connected.
A kind of low wind speed of hydraulic wind power generating set the most according to claim 1 starts control system
Control method, it is characterised in that the method starts controller coordinate control by means of detection device by low wind speed
Make opening degree and the variable displacement motor pivot angle of positive opening four-side, make generating set realize at low wind speeds quickly
Smooth starting, idiographic flow is as follows:
A) low wind speed starts controller (13) by air velocity transducer (1) collection wind velocity signal judgement now
Whether wind speed meets low wind speed starts requirement, if meeting low wind speed entry condition, unit normally starts, otherwise
Low wind speed startup controller (13) controls positive opening four-side (15) and slowly, is steadily switched to upper work
Making, the fluid in the first pressure duct (6) returns the second fuel tank (16) through positive opening four-side (15),
Alleviate starting load, accelerate the rotating speed of dosing pump (5)；
B) low wind speed starts controller (13) by the first torque and speed sensors (4) collection dosing pump (5)
Tach signal, it is judged that whether dosing pump (5) meets minimum operation rotation speed requirements, if meet require; low wind
Speed startup controller (13) controls positive opening four-side (15) and slowly, is steadily switched to the next work,
Control variable motor (17) pivot angle is in maximum simultaneously, to increase output torque, and otherwise positive opening four limit
Guiding valve (15) continues to keep upper work；
C) low wind speed starts controller (13) by the second torque and speed sensors (22) collection variable displacement motor
(17) tach signal, variable displacement motor (17) ramps up, when variable displacement motor (17) output speed reaches
Start unit when requiring to minimum wind speed and complete low wind speed start-up course.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610246947.XA CN105927471A (en) | 2016-04-20 | 2016-04-20 | Low-wind-speed start control system and low-wind-speed start control method for hydraulic wind turbine generator system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610246947.XA CN105927471A (en) | 2016-04-20 | 2016-04-20 | Low-wind-speed start control system and low-wind-speed start control method for hydraulic wind turbine generator system |
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|---|---|
| CN105927471A true CN105927471A (en) | 2016-09-07 |
Family
ID=56838521
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| CN201610246947.XA Pending CN105927471A (en) | 2016-04-20 | 2016-04-20 | Low-wind-speed start control system and low-wind-speed start control method for hydraulic wind turbine generator system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110805521A (en) * | 2019-11-08 | 2020-02-18 | 燕山大学 | Novel frequency modulation control system and control method for energy storage type hydraulic wind generating set |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007327397A (en) * | 2006-06-07 | 2007-12-20 | Bosch Rexroth Corp | Hydraulic circuit for wind power generation |
| US20090273186A1 (en) * | 2008-05-01 | 2009-11-05 | Plant Jr William R | Windmill utilizing a fluid driven pump |
| CN102562460A (en) * | 2011-12-29 | 2012-07-11 | 燕山大学 | Undamped hydraulic yaw system based on pressure detection and control method of undamped hydraulic yaw system |
| CN102628426A (en) * | 2012-04-18 | 2012-08-08 | 浙江大学 | Hydraulic driving-based wind turbine and control method thereof |
| CN103779873A (en) * | 2014-01-14 | 2014-05-07 | 燕山大学 | Low-voltage ride-through control method for hydraulic wind generating set |
| CN204344375U (en) * | 2014-12-09 | 2015-05-20 | 燕山大学 | The low wind speed start up system of a kind of hydraulic wind power generating set |
-
2016
- 2016-04-20 CN CN201610246947.XA patent/CN105927471A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007327397A (en) * | 2006-06-07 | 2007-12-20 | Bosch Rexroth Corp | Hydraulic circuit for wind power generation |
| US20090273186A1 (en) * | 2008-05-01 | 2009-11-05 | Plant Jr William R | Windmill utilizing a fluid driven pump |
| CN102562460A (en) * | 2011-12-29 | 2012-07-11 | 燕山大学 | Undamped hydraulic yaw system based on pressure detection and control method of undamped hydraulic yaw system |
| CN102628426A (en) * | 2012-04-18 | 2012-08-08 | 浙江大学 | Hydraulic driving-based wind turbine and control method thereof |
| CN103779873A (en) * | 2014-01-14 | 2014-05-07 | 燕山大学 | Low-voltage ride-through control method for hydraulic wind generating set |
| CN204344375U (en) * | 2014-12-09 | 2015-05-20 | 燕山大学 | The low wind speed start up system of a kind of hydraulic wind power generating set |
Non-Patent Citations (2)
| Title |
|---|
| 王春行: "《液压伺服控制系统》", 31 July 1981, 机械工业出版社 * |
| 陈奎生: "《液压阀与液压控制系统》", 31 March 1997, 武汉工业大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110805521A (en) * | 2019-11-08 | 2020-02-18 | 燕山大学 | Novel frequency modulation control system and control method for energy storage type hydraulic wind generating set |
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Application publication date: 20160907 |