CN103195667B - A kind of distributed hydraulic control frequency stabilized vertical-shaft wind machine power generating system - Google Patents
A kind of distributed hydraulic control frequency stabilized vertical-shaft wind machine power generating system Download PDFInfo
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- CN103195667B CN103195667B CN201310148265.1A CN201310148265A CN103195667B CN 103195667 B CN103195667 B CN 103195667B CN 201310148265 A CN201310148265 A CN 201310148265A CN 103195667 B CN103195667 B CN 103195667B
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- 239000012530 fluid Substances 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 230000009466 transformation Effects 0.000 claims abstract description 7
- 230000006641 stabilisation Effects 0.000 claims abstract description 4
- 238000011105 stabilization Methods 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 claims description 17
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 239000002828 fuel tank Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
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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
- Y02E10/728—Onshore wind turbines
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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
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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
- 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
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Abstract
The present invention relates to a kind of distributed hydraulic control frequency stabilized vertical-shaft wind machine power generating system, comprise wind-force hydraulic transmission assembly, fluid pressure line, hydraulic control device, hydraulic motor and generator, described wind-force hydraulic transmission assembly is connected with hydraulic control device by fluid pressure line, and described hydraulic control device, hydraulic motor, generator connect successively; Wind-force hydraulic transmission assembly is hydraulic energy output by wind energy transformation, the pressure oil of wind-force hydraulic transmission assembly output is delivered to hydraulic control device through fluid pressure line, it is constant that the rotating speed of hydraulic control device control hydraulic motor keeps, and hydraulic motor drives generator to rotate and sends the electric energy of frequency stabilization. Compared with prior art, the present invention has and can realize the advantages such as constant frequency generation, wind energy transformation rate is high, maintenance cost is low.
Description
Technical field
The present invention relates to a kind of wind energy conversion system electricity generation system, especially relate to a kind of distributed hydraulic control frequency stabilized vertical shaft windPower machine power generating system.
Background technology
Along with the day by day exhausted and pay attention to day by day of people to environmental protection of fossil fuel energy, comprise wind-power electricity generationObtain increasing attention in the whole world at interior new forms of energy and generation technology natural, clean and sustainable use againAnd Devoting Major Efforts To Developing. Especially wind generating technology has obtained significant progress at nearly 20 years, is not only embodied in wind-forceIn the structural design of machine and be embodied in Conversion of Energy mode and electric generator structure and grid integration aspect. At present,The structure of wind energy conversion system, wind energy conversion system can be divided into two kinds of vertical axis windmill and horizontal-shaft wind turbines; And according toWhether wind mill wind wheel rotating speed equates with generator amature rotating speed, wind generator system can be divided into two kinds again,Be constant speed wind generator system and variable speed wind turbine system.
Wind generator system employing is at present at most variable speed wind turbine system, and variable speed wind turbine system is mainlyCan make wind energy conversion system can move by optimum efficiency in very large wind speed range.
Compare, variable speed wind turbine system does not also require generator amature and the maintenance of wind mill wind wheel rotating speedConstant, it allows to generate electricity in certain wind speed range IT wind energy, thereby wind energy utilization is high, now necessaryBetween generator and electrical network, accessing electronic power convertor realizes the uniformity of mains frequency and works as grid sideWhen existing fault or wind speed change rapidly, protection system avoids fault. The shortcoming of variable speed wind turbine system is electric power electricity justThe cost of manufacture of sub-current transformer is high and cause whole system cost to rise, and system architecture is relative complex also.
In recent years, by more and more for the patent of traditional wind generator system to hydraulic drive and control technology.
The utility model patent that is 200820058177 as the patent No. is to be specifically related to a kind of hydraulic wind power generationMachine. It utilizes hydraulic pump to collect wind energy, changes into hydraulic energy, and is stored in accumulator; Pass through again hydraulic motorThe generating of driving generator. The feature of this utility model patent is from heavy and light, is beneficial to tower cylinder and installed by force-summing device, windEnergy transformation efficiency is high, is convenient to store, and can realize strange land staggered power generating; By hydraulic control, reduce wind-force fluctuation rightThe impact of generating voltage. The patent No. is that 201120405322 utility model patent is by straight wind energy conversion system output shaftConnect with hydraulic pump and be connected, directly drive hydraulic pump rotation, hydraulic pump is outer planet pinwheel cycloidal type, passes through hydraulic pressurePipeline is connected with outer planet pinwheel cycloidal type hydraulic motor, rotates outer planet pinwheel pendulum under the driving of pressure oilLine formula hydraulic motor is connected with generating set and drives its generating. This Patent equipment transmits by fluid pressure linePower, can improve the overhead height of pneumatic equipment blades made greatly, thereby promotes wind speed, improves the power of wind-power electricity generation.The patent No. is that 200910023081 patent of invention discloses a kind of hydraulic transduction device for wind-power electricity generation,It is connected hydraulic pump by the first shaft coupling with Wind-driven rotating main shaft, by the second shaft coupling, hydraulic motor is generated electricityMachine connects, and therefore, the pulsed kinetic energy that hydraulic pump just can produce Wind-driven rotating main shaft is converted to hydraulic energy, and logicalCross hydraulic pressure flowline and be delivered to hydraulic motor, hydraulic motor is converted to hydraulic energy constant kinetic energy and outputs to generatingAfter machine, generate electricity.
The common feature of above patent is all based on horizontal-shaft wind turbine, and will comprise hydraulic pump, hydraulic motor andControl valve is concentrated the cabin that is placed on horizontal-shaft wind turbine and is positioned at high-altitude at interior hydraulic means, not only increased machineThe weight in cabin, and increased difficulty and the cost safeguarded.
Summary of the invention
Object of the present invention is exactly to provide one can realize perseverance in order to overcome the defect that above-mentioned prior art existsElectricity, wind energy transformation rate is high, maintenance cost is low distributed hydraulic control frequency stabilized vertical-shaft wind machine power generating system take place frequently.
Object of the present invention can be achieved through the following technical solutions:
A kind of distributed hydraulic control frequency stabilized vertical-shaft wind machine power generating system, comprises wind-force hydraulic transmission assembly, hydraulic tubeRoad, hydraulic control device, hydraulic motor and generator, described wind-force hydraulic transmission assembly by fluid pressure line withHydraulic control device connects, and described hydraulic control device, hydraulic motor, generator connect successively;
Wind-force hydraulic transmission assembly is hydraulic energy output by wind energy transformation, the pressure oil of wind-force hydraulic transmission assembly outputBe delivered to hydraulic control device through fluid pressure line, it is constant that the rotating speed of hydraulic control device control hydraulic motor keeps, liquidPressure motor drives generator to rotate and sends the electric energy of frequency stabilization.
Described wind-force hydraulic transmission assembly is provided with multiple, is connected respectively by fluid pressure line with hydraulic control device.
Described wind-force hydraulic transmission assembly comprise vertical axis windmill, vertical axis windmill pylon, long pass moving axis,Universal joint, cone bearing, yielding coupling, tower base, low speed hydraulic pump, hydraulic pump mounting rack, describedVertical axis windmill is located on vertical axis windmill pylon, and described vertical axis windmill pylon is located at tower baseUpper, described long pass end shaft connects respectively vertical axis windmill and cone bearing by universal joint, the described axis of coneHold, yielding coupling, low speed hydraulic pump connect successively, described low speed hydraulic pump is located on hydraulic pump mounting rack,And be connected with hydraulic control device by fluid pressure line;
The wind wheel of vertical axis windmill rotates with the wind, and successively by universal joint, long pass moving axis, cone bearing, elasticityShaft coupling drives low speed hydraulic pump to rotate, and the mechanical energy of input is converted to hydraulic energy output by low speed hydraulic pump.
Described low speed hydraulic pump is connected with fuel tank.
Described hydraulic control device comprises controller, speed probe, variable hydraulic cylinder, two-position three-way proportional sideTo valve and 3-position 4-way proportional direction valve, described controller connects respectively speed probe, two-position three-way proportional sideTo valve and 3-position 4-way proportional direction valve, described speed probe, 3-position 4-way proportional direction valve, variable hydraulic pressureCylinder is all connected with hydraulic motor, and described two-position three-way proportional direction valve is connected with variable hydraulic cylinder;
The rotating speed of speed probe Real-time Collection hydraulic motor and by speed feedback signal to controller, controller is respectivelyMake turning of hydraulic motor to two-position three-way proportional direction valve and 3-position 4-way proportional direction valve sending controling instruction signalIt is constant that speed keeps.
Described speed probe is arranged on the output shaft of hydraulic motor.
Described fluid pressure line is provided with ball check valve.
Compared with prior art, the present invention has the following advantages:
No matter 1 wind speed is too high or too low, utilize control and the regulating action of hydraulic control device of the present invention, ZongGenerator constant frequency generation under the driving of hydraulic motor be can ensure, electronics inversion and fairing no longer needed.
2, the present invention can be as required, adopts the distributed knot of multiple vertical axis windmill+power transmission shaft+hydraulic pumpsStructure, thus more effectively absorb wind energy and be converted to electric energy output.
3, compared with the wind generator system of existing other structures, due to low speed hydraulic pump and hydraulic control device allBe arranged in ground, make equipment operation maintenance convenient, greatly reduce the maintenance cost of system.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of hydraulic control device of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail. The present embodiment is with the technology of the present invention sideCase is that prerequisite is implemented, and has provided detailed embodiment and concrete operating process, but protection model of the present inventionEnclose and be not limited to following embodiment.
As shown in Figure 1, a kind of distributed hydraulic control frequency stabilized vertical-shaft wind machine power generating system, comprises wind-force hydraulic driveAssembly, fluid pressure line 10, hydraulic control device 11, hydraulic motor 12 and generator 13, described wind-force liquidPress transmission component to be connected with hydraulic control device 11 by fluid pressure line 10, described hydraulic control device 11,Hydraulic motor 12, generator 13 connect successively; Wind-force hydraulic transmission assembly is hydraulic energy output by wind energy transformation,The pressure oil of wind-force hydraulic transmission assembly output is delivered to hydraulic control device 11, hydraulic control through fluid pressure line 10The rotating speed that device 11 is controlled hydraulic motor 12 keeps constant, and hydraulic motor 12 drives generator 13 to rotate and sendsThe electric energy of frequency stabilization. Described fluid pressure line is provided with ball check valve.
Wind-force hydraulic transmission assembly can arrange multiple as required, respectively by fluid pressure line 10 and hydraulic control dressPut 11 connections, form distributed, thereby more effectively absorb wind energy and be converted to electric energy output.
Described wind-force hydraulic transmission assembly comprises that vertical axis windmill 1, vertical axis windmill pylon 3, long pass are movingAxle 4, universal joint 2, cone bearing 5, yielding coupling 6, tower base 7, low speed hydraulic pump 8, hydraulic pump peaceDress support 9, described vertical axis windmill 1 is located on vertical axis windmill pylon 3, described vertical-shaft windMachine pylon 3 is located in tower base 7, and described long pass moving axis 4 two ends connect respectively vertical axis by universal joint 2Wind energy conversion system 1 and cone bearing 5, described cone bearing 5, yielding coupling 6, low speed hydraulic pump 8 connect successively,Described low speed hydraulic pump 8 is located on hydraulic pump mounting rack 9, and by fluid pressure line 10 and hydraulic control dressPut 11 connections; In the time that wind speed reaches certain numerical value, the wind wheel of vertical axis windmill 1 rotates with the wind, and logical successivelyCross universal joint 2, long pass moving axis 4, cone bearing 5, yielding coupling 6 and drive low speed hydraulic pump 8 to rotate, low speedThe mechanical energy of input is converted to hydraulic energy output by hydraulic pump 8. Described low speed hydraulic pump 8 is connected with fuel tank.
As shown in Figure 2, hydraulic control device 11 comprises controller 1101, speed probe 1102, variable hydraulic pressureCylinder 1103, two-position three-way proportional direction valve 1104 and 3-position 4-way proportional direction valve 1105, described controller1101 connect respectively speed probe 1102, two-position three-way proportional direction valve 1104 and 3-position 4-way proportional direction valve1105, described speed probe 1102,3-position 4-way proportional direction valve 1105, variable hydraulic cylinder 1103 all withHydraulic motor 12 connects, and described speed probe 1102 is arranged on the output shaft of hydraulic motor 12, described inTwo-position three-way proportional direction valve 1104 be connected with variable hydraulic cylinder 1103; Speed probe 1102 Real-time CollectionsThe rotating speed of hydraulic motor 12 and by speed feedback signal to controller 1101, controller 1101 is respectively to two threeLogical proportional direction valve 1104 and 3-position 4-way proportional direction valve 1105 sending controling instruction signals make hydraulic motor 12Rotating speed keep constant. Hydraulic control device 11 also comprise accumulator, proportional pressure valve with electromagnetism unloading function,Pressure gauge, pressure sensor and return filter etc.
When wind speed reaches after certain wind speed, the wind wheel of vertical axis windmill 1 rotates, and universal by what be attached theretoThe drive low speed hydraulic pumps 8 such as joint 2, long pass moving axis 4, yielding coupling 6 rotate, and low speed hydraulic pump 8 will be inputtedMechanical energy be converted to hydraulic energy output, now the pressure oil of output is delivered to hydraulic pressure control through fluid pressure line 10 parallel connectionsDevice 11 processed, the pressure oil collecting in hydraulic control device 11 drives hydraulic motor 12 to drive generator 13After rotating, produce electric energy output. And too high when wind speed, low speed hydraulic pump 8 rotating speeds make it output flow increasing after increasingGreatly, thereby the also increase thereupon of the rotating speed of hydraulic motor 12 and generator 13, hydraulic motor 12 be now arranged on defeatedSpeed feedback signal is returned controller 1101 by 1102 of speed probes on shaft, thus 1101 of controllersGoing out control instruction signal controls respectively two-position three-way proportional direction valve 1104 manipulated variable hydraulic cylinders 1103 and makes hydraulic pressure horseReach 12 discharge capacity increase, the valve port of 3-position 4-way proportional direction valve 1105 is opened and is reduced to enter hydraulic motor simultaneously12 flow, thus the rotating speed that reduces rapidly hydraulic motor 12 is to steady state value. Otherwise, when wind speed reduces, lowAfter speed hydraulic pump 8 rotating speeds reduce, make it output flow and reduce, thereby the rotating speed of hydraulic motor 12 and generator 13 alsoDecrease, be now arranged on 1102 of speed probes on hydraulic motor 12 output shafts by speed feedback signalReturn controller 1101, control respectively two-position three-way proportional direction valve thereby controller 1101 sends control instruction signal1104 manipulated variable hydraulic cylinders 1103 reduce the discharge capacity of hydraulic motor 12, simultaneously 3-position 4-way proportional direction valve1105 valve port is closed to increase and is entered the flow of hydraulic motor 12, thereby increases rapidly the rotating speed of hydraulic motor 12To steady state value.
No matter thereby wind speed is too high or too low, utilize control and the regulating action of hydraulic control device of the present invention, ZongGenerator constant frequency generation under the driving of hydraulic motor be can ensure, electronics inversion and fairing no longer needed. Meanwhile,Can also be as required, adopt distributed frame and the hydraulic pressure control of multiple vertical axis windmill+power transmission shaft+hydraulic pumpsDevice processed combines, thereby more effectively absorbs wind energy and be converted to electric energy output. In addition with existing other structuresWind generator system compare, because low speed hydraulic pump and hydraulic control device are all arranged in ground, make equipment fortuneBattalion safeguards convenient, greatly reduces the maintenance cost of system.
Claims (5)
1. a distributed hydraulic control frequency stabilized vertical-shaft wind machine power generating system, is characterized in that, comprises wind-force hydraulic pressureTransmission component, fluid pressure line, hydraulic control device, hydraulic motor and generator, described wind-force hydraulic drive groupPart is connected with hydraulic control device by fluid pressure line, and described hydraulic control device, hydraulic motor, generator are complied withInferior connection;
Wind-force hydraulic transmission assembly is hydraulic energy output by wind energy transformation, the pressure oil of wind-force hydraulic transmission assembly outputBe delivered to hydraulic control device through fluid pressure line, it is constant that the rotating speed of hydraulic control device control hydraulic motor keeps, liquidPressure motor drives generator to rotate and sends the electric energy of frequency stabilization;
Described wind-force hydraulic transmission assembly is provided with multiple, is connected with hydraulic control device by fluid pressure line respectively,Form distributedly, more effectively absorb wind energy and be converted to electric energy output;
Described wind-force hydraulic transmission assembly comprise vertical axis windmill, vertical axis windmill pylon, long pass moving axis,Universal joint, cone bearing, yielding coupling, tower base, low speed hydraulic pump, hydraulic pump mounting rack, describedVertical axis windmill is located on vertical axis windmill pylon, and described vertical axis windmill pylon is located at tower baseUpper, described long pass end shaft connects respectively vertical axis windmill and cone bearing by universal joint, the described axis of coneHold, yielding coupling, low speed hydraulic pump connect successively, described low speed hydraulic pump is located on hydraulic pump mounting rack,And be connected with hydraulic control device by fluid pressure line;
The wind wheel of vertical axis windmill rotates with the wind, and successively by universal joint, long pass moving axis, cone bearing, elasticityShaft coupling drives low speed hydraulic pump to rotate, and the mechanical energy of input is converted to hydraulic energy output by low speed hydraulic pump;
Low speed hydraulic pump and hydraulic control device are all arranged in ground.
2. the distributed hydraulic control frequency stabilized vertical-shaft wind machine power generating system of one according to claim 1, its spyLevy and be, described low speed hydraulic pump is connected with fuel tank.
3. the distributed hydraulic control frequency stabilized vertical-shaft wind machine power generating system of one according to claim 1, its spyLevy and be, described hydraulic control device comprises controller, speed probe, variable hydraulic cylinder, two-position three way ratioProportional direction valve and 3-position 4-way proportional direction valve, described controller connects respectively speed probe, two-position three way ratioProportional direction valve and 3-position 4-way proportional direction valve, described speed probe, 3-position 4-way proportional direction valve, variableHydraulic cylinder is all connected with hydraulic motor, and described two-position three-way proportional direction valve is connected with variable hydraulic cylinder;
The rotating speed of speed probe Real-time Collection hydraulic motor and by speed feedback signal to controller, controller is respectivelyMake turning of hydraulic motor to two-position three-way proportional direction valve and 3-position 4-way proportional direction valve sending controling instruction signalIt is constant that speed keeps.
4. the distributed hydraulic control frequency stabilized vertical-shaft wind machine power generating system of one according to claim 3, its spyLevy and be, described speed probe is arranged on the output shaft of hydraulic motor.
5. the distributed hydraulic control frequency stabilized vertical-shaft wind machine power generating system of one according to claim 1, its spyLevy and be, described fluid pressure line is provided with ball check valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310148265.1A CN103195667B (en) | 2013-04-25 | 2013-04-25 | A kind of distributed hydraulic control frequency stabilized vertical-shaft wind machine power generating system |
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| CN201310148265.1A CN103195667B (en) | 2013-04-25 | 2013-04-25 | A kind of distributed hydraulic control frequency stabilized vertical-shaft wind machine power generating system |
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| CN103195667A CN103195667A (en) | 2013-07-10 |
| CN103195667B true CN103195667B (en) | 2016-05-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104847599B (en) * | 2015-06-09 | 2017-09-19 | 大连华锐重工集团股份有限公司 | Vertical axis wind electric multiplying gear |
| CN107061176A (en) * | 2017-05-16 | 2017-08-18 | 西安交通大学 | Distributed hydraulic pressure generating system |
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| CN2900850Y (en) * | 2006-05-08 | 2007-05-16 | 王海军 | Wind power generating system |
| US7569943B2 (en) * | 2006-11-21 | 2009-08-04 | Parker-Hannifin Corporation | Variable speed wind turbine drive and control system |
| CN101782042A (en) * | 2010-02-05 | 2010-07-21 | 上海僖舜莱机电设备制造有限公司 | Hydraulic control frequency stabilized wind power generation apparatus |
| CN102192099A (en) * | 2011-03-10 | 2011-09-21 | 盖争 | Wind power hydraulic power supply device |
| CN202250621U (en) * | 2011-09-29 | 2012-05-30 | 青岛经济技术开发区泰合海浪能研究中心 | Vertical axis wind power generation equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2370614A (en) * | 2002-03-12 | 2002-07-03 | Peter Richards | Wind-driven power generating apparatus having an hydraulic turbine |
| CN2878713Y (en) * | 2005-12-12 | 2007-03-14 | 段小平 | Wind power generation device and system |
| CN101806290B (en) * | 2010-04-28 | 2013-09-11 | 逄涛 | Megawatt double-wind-wheel wind power generation machine |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2900850Y (en) * | 2006-05-08 | 2007-05-16 | 王海军 | Wind power generating system |
| US7569943B2 (en) * | 2006-11-21 | 2009-08-04 | Parker-Hannifin Corporation | Variable speed wind turbine drive and control system |
| CN101782042A (en) * | 2010-02-05 | 2010-07-21 | 上海僖舜莱机电设备制造有限公司 | Hydraulic control frequency stabilized wind power generation apparatus |
| CN102192099A (en) * | 2011-03-10 | 2011-09-21 | 盖争 | Wind power hydraulic power supply device |
| CN202250621U (en) * | 2011-09-29 | 2012-05-30 | 青岛经济技术开发区泰合海浪能研究中心 | Vertical axis wind power generation equipment |
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