CN101207360A - Megawatt level direct drive type speed-changing oar-changing constant frequency wind generator set - Google Patents
Megawatt level direct drive type speed-changing oar-changing constant frequency wind generator set Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- 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
- Y02E10/76—Power conversion electric or electronic aspects
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Abstract
The invention relates to a megawatt-level direct drive variable-speed variable-propeller constant-frequency wind turbine, which structurally comprises blades, a hub, a propeller changing system, a multi-level permanent magnet synchronous generator, a base, an engine room, a yawing system, a hydraulic system, a lubricating system, a wind measuring system, a tower, a variable-speed constant-frequency controlling system, and other parts. An impeller drives the rotor of the multi-level permanent magnet synchronous generator to rotate, the stator of the multi-level permanent magnet synchronous generator sends the electricity energy outputted by a wind generator set to an electricity grid through an inverting system, the transform of the wind energy-mechanical energy-electricity energy is realized. The wind generator set adopts a microprocessor for capturing all information outside the circumstance accurately, the controlling system regulates the operation of the wind generator set according to the information, and the wind generator set is ensured to work in an optimized and safe circumstance always. At the same time, the wind generator set is ensured to work in different wind speed level, the wind energy utilizing coefficient is ensured to be more than 0.47, and the performance cost ratio of the wind generator set is better improved.
Description
Technical field
The present invention relates to a kind of wind-driven generator group system, be adapted at MW class variable-speed constant-frequency wind power generation station and use.
Technical background
Speed-changing oar-changing type wind turbine generator is owing to having than Stall Type wind turbine generator wind power conversion efficiency height, the power of the assembling unit and the mainstream technology of weight ratio is little, the operation noise is little, the quality of power supply is good etc. advantage becomes current wind turbine generator.What adopt the speed-changing oar-changing technology in the world at present is the double-fed type speed changing and constant frequency unit mostly.
Summary of the invention
What the present invention adopted is direct-drive type variable speed constant frequency technology, and main feature is to have adopted the wind wheel and the direct-coupled kind of drive of generator, and generator adopts the multistage asynchronous generator, is incorporated into the power networks by flat-out converter plant.
MW class provided by the invention directly drives the speed-variable frequency-constant wind-driven generator group and compares with MW class double-feedback speed-variable frequency-constant wind-driven generator group, owing to do not contain these parts of gear box in its structure, therefore, have advantages such as simple in structure, that transmission efficiency is high, generating efficiency is high, maintenance cost is low.In addition, owing to adopted the permanent magnetic multi-stage synchronous generator, this kind generator size is little, compact conformation, generating efficiency height, slewing range are wide, do not have the magnetic loss of whetstone, has improved whole wind power generator group system reliability of operation and life-span effectively.
Technical scheme of the present invention is achieved in that
Megawatt level direct drive type speed-changing oar-changing constant-frequency wind turbine generator group of the present invention mainly is made up of each parts shown in Figure 1, they are blade (1), wheel hub (2), pitch-controlled system (3), permanent magnetic multi-stage synchronous generator (4), base (5), cabin (6), yaw system (7), hydraulic system (8), lubricating system (9), wind measuring system (10), pylon and variable speed constant frequency control system, and above-mentioned parts have constituted the critical piece of megawatt level direct drive type speed-changing oar-changing constant-frequency wind turbine generator group jointly.Directly drive the permanent magnetic multi-stage synchronous generator rotor by impeller and rotate, the permanent magnetic multi-stage synchronous generator stator is connected to the grid, and sends into electrical network by the electricity that inversion system sends wind turbine generator, realizes the conversion of wind energy-mechanical energy-electric energy.Microprocessor is adopted in wind turbine generator control, and all information of environmental externality of obtaining promptly and accurately, control system are adjusted the wind turbine generator operation according to these information, guarantees that wind turbine generator is being optimized always, moves in the safe environment.
Its connected mode is: three vanes fixed in front are on wheel hub, and pitch-controlled system also is fixed on the wheel hub.At the wheel hub rear, generator unit stator is fixed on the base, and generator amature is connected with wheel hub.Base inside is equipped with hydraulic pressure, lubricating system, and base side and base bottom are equipped with yaw system.Wind measuring system is installed in engine room cover top, and except that blade, other parts all are installed in the cabin, and the cabin is supported by pylon.
Below each parts is introduced in detail:
Blade: megawatt level direct drive type speed-changing oar-changing constant-frequency wind turbine generator group adopts speed-changing oar-changing type blade, blade material is a galss fiber reinforced resin, blade installation has lightening inductor, and lightning current is cut down through the generating gap and imported the basis by pylon, can not cause damage to unit.Impeller comprises the pitch-controlled system of blade, casting hub and blade.
Pitch-controlled system: as shown in Figure 2, megawatt level direct drive type speed-changing oar-changing constant-frequency wind turbine generator group pitch-controlled system is made up of following important spare part: pitch variable bearings (1), wheel hub (2), pitch control cabinet (3), change oar dish (4), change oar driving arm (5), change oar motor (6), change oar driven wheel (7), variable paddle speed reducer (8), cog belt (9) etc.Whole pitch-controlled system is become the oar motor and is connect by key and variable paddle speed reducer by change oar motor-driven, becomes oar dish and pitch variable bearings outer ring and connects, and the driving wheel of variable paddle speed reducer reaches the change oar dish that links to each other with cog belt with actuating force by cog belt and finally passes to blade.When wind speed surpassed rated wind speed, pitch-controlled system was limited in rated power by adjusting blade angle with the power output of blower fan, thereby prevents generator and inversion system overload.Simultaneously, pitch-controlled system is readjusted propeller pitch angle according to the blower fan power output situation of operation control system record and the propeller pitch angle of blade, in conjunction with change control system, realizes the constant output of rated power.These 3 independently blade pitch device also be the brake system of wind turbine generator, adjust propeller pitch angle after, the rotating speed of unit descends up to equipment downtime.
The permanent magnetic multi-stage synchronous generator: megawatt level direct drive type speed-changing oar-changing constant-frequency wind turbine generator group generator is the permanent magnetic multi-stage synchronous generator, and the permanent magnet excitation mode is simple in structure, is made up of generator unit stator, rotor, moving dead axle and other annexes.Generator unit stator is made up of stator support, iron core and winding and other annexes, and stator adopts fractional-slot, can better eliminate the harmonic effects of generator, effectively reduces operational shock and noise.Rotor is made up of rotor field spider and permanent magnetism magnetic pole, and directly with the impeller connection and by impeller-driven, permanent magnetic material is installed on the yoke of internal rotor, sets up magnetic field by it, and the mechanical kinetic energy of wheel rotation is converted to electric energy.The generator air cooling system adopts the forced air cooling formula, and cold air directly blows on the lamination by the air channel, adopts this self-adjusting system and does not use cooling fan or pump, even wind turbine control system inefficacy cooling system still can play a role
Base: base plays effect fixing and that support to each parts on the wind turbine generator, and the vitals of unit all is installed on the base, and base adopts monoblock cast to form, and has enough structural strength performances, can bear the effect of repeat load.
The cabin assembly: glass-reinforced plastic material is adopted in the cabin, has good antiseptic property, noise reduction and heat-insulating property, and thunderbolt is had certain shielding action.Yaw system, lubricated, hydraulic system etc. all are installed in the cabin, and spacious space is arranged in the cabin, make things convenient for the operation maintenance personnel operation.Simultaneously, also design electric lifting device, made things convenient for the lifting of instrument and spare part
Hydraulic system: because compositions such as hydraulic power unit, electromagnetic component, accumulator, junction pipe routes.Be used to driftage brake system and rotor brake system that power source is provided.
Lubricating system: lubricating system is made up of lubricating pump, oil dispenser, lubricant transfer pinion, lubrication management route etc.Be mainly used in the lubricated of the driftage bearing race and the flank of tooth.
Pylon: pylon adopts conical tower tube, is supporting cabin and impeller, and dynamic stability is reliable.Cat ladder, safety rope and workbench are equipped with in pylon inside.Megawatt level direct drive type speed-changing oar-changing constant frequency wind-powered electricity generation unit has the pylon of differing heights to select for different wind district.
Control system: the control system that the assembly of megawatt level direct drive type speed-changing oar-changing constant-frequency wind turbine generator is equipped with is core with the Programmable Logic Controller, and control circuit is made up of PLC master controller and function expanding module thereof.The main wind-driven generator of realizing normally moves the setting of safeguard protection, fault detect and the processing of control, unit, operational factor, data record demonstration and manual operation, is equipped with various communication interfaces, can realize communication on the spot and telecommunication.
Normal operation control comprises that unit starts automatically, and current transformer is incorporated into the power networks, main parts size dehumidifying heating; the cabin is from the motion tracking wind direction, hydraulic system start-stop, radiator start-stop; cable and automatic cable-releasing are turned round in the cabin, capacitance compensation and capacitor filtering switching and be lower than incision autostop during wind speed.
Monitoring system is mainly monitored voltage, the frequency of electrical network, generator output current, power, power factor, wind speed, wind direction, wheel speed, generator speed, the hydraulic system situation, the yaw system situation, the reliability service of the signal controlling wind-force unit that the temperature of wind turbine generator key equipment and outdoor temperature etc., controller provide according to transducer.
Safety system divides three-decker: computer system (controller) is independent of the emergency shutdown chain and the individual hardware protection measure of controller.Microcomputer Protection relates to the various aspects of wind-force unit complete machine and parts, and the protection of emergency shutdown chain is used for the complete machine catastrophe failure and reaches when artificially needing, and individual hardware protection then is mainly used in the protection of generator and each electrical load.
The design of electric-control system and result of implementation can satisfy the requirement of wind turbine generator unattended operation, operation automatically, State Control and monitoring.
Megawatt level direct drive type speed-changing oar-changing constant-frequency wind turbine generator group electricity generation system inserts electrical network by convertor assembly and transformer, and wherein the converter system main circuit adopts the AC-DC-AC structure, and the energy that permanent magnet synchronous wind generator sends is sent into electrical network by transformer,
Advantage of the present invention: megawatt level direct drive type speed-changing oar-changing constant-frequency wind turbine generator group adopts the permanent magnetic multi-stage synchronous generator, directly drive by impeller, unit can move on different speed stages, makes generator move the absorption wind energy of blade optimum with the rotating speed of optimum all the time.Make power coefficient＞0.47, better improve the cost performance of wind turbine generator.Simultaneously, adopt 3 independently electric variable pitch mechanisms, become of the non-maintaining system transmission of the power of oar effect, effectively control wheel speed and wind energy absorption efficiency by cog belt.
Description of drawings:
Fig. 1 is a megawatt level direct drive type speed-changing oar-changing constant-frequency wind turbine generator group overall construction drawing
Fig. 2 is a megawatt level direct drive type speed-changing oar-changing constant-frequency wind turbine generator group pitch-controlled system schematic diagram
Fig. 3 is a megawatt level direct drive type speed-changing oar-changing constant-frequency wind turbine generator set control system schematic diagram
Embodiment
Wind-powered electricity generation unit of the present invention has adopted the direct-drive permanent-magnetism synchronous generator and has been made of PLC master controller and function expanding module thereof, realize optimized energy output under the wind-powered electricity generation unit variable-speed operation state, the size of wind-powered electricity generation unit generation amount is except the influence of mean wind speed and wind wheel area, and principal element depends on its level of efficiency under different wind friction velocities.According to aerodynamic principle, have only when meeting the design of blade to obtain best level of efficiency in the face of the wing angle of attack of wind wheel blade.In fact along with wind speed and with respect to wind wheel circumference ratio speed by overlapping the continuous variation that the back produces the air-flow angle in the face of the positive air flow of wind wheel and side air-flow, make and traditional decide rotating speed wind-powered electricity generation unit and can only under a wind friction velocity, obtain optimum capacity.Variable speed fan has been broken aforesaid restriction from principle, has realized that unit is not subjected to the novel concept of wind speed constraint.For working range with interior any wind speed, unit all can and stable high efficiency state under the operation generating.Another principal character of transmission technology, make it have the fitful wind moment kurtosis slow ability that flattens that makes, for the transition moment that can cause voltage fluctuation and damage transmission mechanism, increase by wind speed round is weakened, simultaneously the fitful wind energy is got up with the form " storage " of transmission inertia, when wind speed decreased, under the regulation and control of control system power electronic equipment, energy stored discharged when wind wheel was quickened, and sent into electrical network again with the form of electric energy.Here, the acceleration of wind wheel, deceleration change the effect of playing buffering to the step evolution of wind energy, have guaranteed the stationarity of wind energy conversion system internal energy drive disk assembly with STRESS VARIATION, prevent the generation of destructive mechanism stress.Therefore, in the wind-force field of change at random, it is more steady that the wind-driven generator that the wind-driven generator of variable-speed operation moves than traditional constant speed turns round, and system is more reliable; Unit adopts pulp distance varying mechanism to carry out power adjustments; to guarantee the above stable rated power output of rated wind speed point; keeping the air on the blade to be in optimum state under gentle breeze and the rated wind speed; improve breeze wind efficient; the wearing and tearing that peak load causes to blade material under subtracting; the double effects that obtains to improve the complete machine generating efficiency and increase safety protection function; become slurry and pass through to adjust blade angle apart from control system; can in very wide wind speed range, move generating; the existing starting wind velocity of wind wheel structure that this and fixed slurry move apart from stall; the rated wind speed height; rated wind speed is put the situation of above power loss and is compared, and demonstrates technology and powerful advantages economically.Become the aerodynamic loading that slurry control can reduce wind turbine generator greatly in addition, the power adjustments when moving surpassing rated wind speed can reduce suffered positive pressure of wind wheel and dynamic stress.When very fast wind speed occurring, blade can rotate to the crosswind position by system's control.Realize the callipers brake car, avoid strong wind to cause damage to impeller and whole unit; Unit organically combines operation of electricity generation system variable-ratio and electronic change slurry apart from power adjustments, adopt advanced computer intelligence control, in the same power output of acquisition self optimum operation characteristic and the functional relation of negative speed and rotating speed, optimize the rotating speed and the power output of wind turbine generator, in conjunction with speed change become slurry apart from power adjustments can obtain efficiently, power output stably, this characteristic has realistic meaning to the wind power equipment of the limited bigger ratio of net capacity lower link.This system improves the electrical network quality to suppressing harmonic wave, improves grid stability and realizes that the economical operation of electric power system all has positive role.
Permanent magnet synchronous wind generator effectively reduces or has suppressed the harmonic torque pulsation of motor side by six mutually uncontrollable rectifications in addition, simultaneously motor windings is not almost had the influence of du/dt., the convertor assembly major loop adopts multipleization parallel technology, has improved power system capacity (the low capacity power device can be used in the hicap), has reduced output current harmonics.It is that triple copped waves are boosted that middle copped wave is boosted, and has played voltage stabilizing and boosting, has adapted to the maximal wind-energy capture strategy of blower fan.
Direct-drive permanent magnetism synchronous wind generating system convertor assembly is the total power convertor assembly, convertor assembly and various electrical networks compatible good, have in the wide region more the reactive power regulating power and to the enabling capabilities of line voltage.Simultaneously, convertor assembly advanced person's the control strategy and the brake unit of particular design make blower fan system have good low voltage ride-through capability (LVRT Capability), to adapt to grid failure state, keep within a certain period of time and the connecting and off-grid not of electrical network.
Claims (5)
1. megawatt level direct drive type speed-changing oar-changing constant-frequency wind turbine generator group, comprise blade (1), wheel hub (2), pitch-controlled system (3), permanent magnetic multi-stage synchronous generator (4), base (5), cabin (6), yaw system (7), hydraulic system (8), lubricating system (9), each parts such as wind measuring system (10), pylon (11) and variable speed constant frequency control system.It is characterized in that: the permanent magnetic multi-stage synchronous generator can directly be driven by impeller, and wind turbine generator can be moved on different wind speed sections.Its connection is: three vanes fixed in front are on wheel hub, and pitch-controlled system also is fixed on the wheel hub.At the wheel hub rear, the permanent magnetic multi-stage synchronous generator stator is fixed on the base, and the permanent magnetic multi-stage synchronous generator rotor is connected with wheel hub.Base inside is equipped with hydraulic pressure, lubricating system, and base side and bottom are equipped with yaw system.Wind measuring system is installed in engine room cover top, and except that blade, other parts all are installed in the cabin, and the cabin is supported by pylon.
2. according to the described megawatt level direct drive type speed-changing oar-changing constant-frequency wind turbine generator of claim 1 group, it is characterized in that the peace commentaries on classics has independently electric variable pitch mechanism on 3 blades, form by pitch variable bearings, wheel hub, pitch control cabinet, change oar dish, change oar driving arm, change oar motor, change oar driven wheel, variable paddle speed reducer, cog belt etc.Become the oar motor and connect by key and variable paddle speed reducer, variable paddle speed reducer is connected by interior external splines with change oar driven wheel, and variable paddle speed reducer is fixed on and becomes on the oar driving arm.Cog belt is fixed on and becomes on the oar dish, simultaneously with the engagement of change oar driving wheel.Change oar dish, change oar driving arm, pitch variable bearings all are fixed on the wheel hub.Become the change oar driven wheel rotation that the oar motor-driven is connected with the variable paddle speed reducer output shaft, drive the change oar dish that is connected with cog belt simultaneously and rotate, thereby drive pitch variable bearings outer ring and blade rotation.
3. according to the described megawatt level direct drive type speed-changing oar-changing constant-frequency wind turbine generator of claim 1 group, it is characterized in that the permanent magnetic multi-stage synchronous generator, its structure is the multistage low speed synchronous magnetoelectric machine of external rotor, adopt the power adjustments mode of speed-changing oar-changing, wind turbine generator is moved on different speed stages, the absorption wind energy of blade optimum, generator is with the rotating speed operation of optimum.
4. by the described megawatt level direct drive type speed-changing oar-changing constant-frequency wind turbine generator of claim 1 group, it is characterized in that its electric control system becomes oar cabinet, transducer and stube cable etc. by low tension gas holder, capacitor box, control cubicle, unsteady flow cabinet, cabin control cubicle, three covers and forms.
5. by the described megawatt level direct drive type speed-changing oar-changing constant-frequency wind turbine generator of claim 1 group, it is characterized in that its convertor assembly is the total power convertor assembly, adopt six mutually uncontrollable rectifications, major loop adopts multipleization parallel technology, and it is that triple copped waves are boosted that middle copped wave is boosted.
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| CNA2006101713317A CN101207360A (en) | 2006-12-19 | 2006-12-19 | Megawatt level direct drive type speed-changing oar-changing constant frequency wind generator set |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042167A (en) * | 2010-12-15 | 2011-05-04 | 北京金风科创风电设备有限公司 | Pitch regulating device and wind driven generator |
| CN102281742A (en) * | 2011-07-01 | 2011-12-14 | 新疆金风科技股份有限公司 | Closed cabinet body cooling system and wind generating set |
| CN101604865B (en) * | 2009-07-24 | 2012-02-08 | 上海致远绿色能源有限公司 | Wind power generation system for low-voltage DC power supply |
| CN102562453A (en) * | 2012-03-01 | 2012-07-11 | 国电联合动力技术有限公司 | Pitch control method of variable-speed constant-frequency wind driven power generator at rated revolution speed stage |
| CN101518864B (en) * | 2008-09-10 | 2012-09-05 | 兰州理工大学 | Processing method of wind generator hubs |
| CN102691621A (en) * | 2012-06-18 | 2012-09-26 | 袁宗凡 | Novel wind driven generator |
| CN101839218B (en) * | 2009-09-29 | 2013-06-26 | 沈阳华创风能有限公司 | Direct-drive wind generating set |
| CN103441721A (en) * | 2013-09-04 | 2013-12-11 | 苏州罗兰机电设备有限公司 | Wind power generation device |
| CN103742362A (en) * | 2014-01-15 | 2014-04-23 | 北京金风科创风电设备有限公司 | Independent variable pitch control system and method for direct-drive permanent magnet wind generating set |
| CN101826730B (en) * | 2009-03-06 | 2014-06-18 | 盈威力新能源科技(上海)有限公司 | Rotating coordinate system-based high-efficiency BANG-BANG software phase locked loop |
| CN106253616A (en) * | 2016-08-11 | 2016-12-21 | 陈炯 | Super high power wind-power electricity generation long distance powedr transmission electric station |
| CN107559152A (en) * | 2016-07-01 | 2018-01-09 | 西门子公司 | Wind turbine with wind sensor |
| CN107701371A (en) * | 2017-09-06 | 2018-02-16 | 合肥凌山新能源科技有限公司 | A kind of power-generating control system of multi fan wind power generating set |
| CN110469461A (en) * | 2019-08-14 | 2019-11-19 | 树根互联技术有限公司 | A kind of fracture predictor method of blower tooth band, its device and readable storage medium storing program for executing |
| CN112688525A (en) * | 2020-12-16 | 2021-04-20 | 浙江华云信息科技有限公司 | Electric power collection equipment based on thing networking |
| CN113217284A (en) * | 2021-05-17 | 2021-08-06 | 广州赛特新能源科技发展有限公司 | Direct-drive breeze wind driven generator system |
| CN113217281A (en) * | 2021-05-11 | 2021-08-06 | 上海电气风电集团股份有限公司 | Wind power generation system, control method and device thereof, electronic device, and storage medium |
| CN113538992A (en) * | 2020-12-30 | 2021-10-22 | 北京金风慧能技术有限公司 | Variable-pitch teaching equipment of wind generating set |
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- 2006-12-19 CN CNA2006101713317A patent/CN101207360A/en active Pending
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101518864B (en) * | 2008-09-10 | 2012-09-05 | 兰州理工大学 | Processing method of wind generator hubs |
| CN101826730B (en) * | 2009-03-06 | 2014-06-18 | 盈威力新能源科技(上海)有限公司 | Rotating coordinate system-based high-efficiency BANG-BANG software phase locked loop |
| CN101604865B (en) * | 2009-07-24 | 2012-02-08 | 上海致远绿色能源有限公司 | Wind power generation system for low-voltage DC power supply |
| CN101839218B (en) * | 2009-09-29 | 2013-06-26 | 沈阳华创风能有限公司 | Direct-drive wind generating set |
| CN102042167A (en) * | 2010-12-15 | 2011-05-04 | 北京金风科创风电设备有限公司 | Pitch regulating device and wind driven generator |
| CN102281742A (en) * | 2011-07-01 | 2011-12-14 | 新疆金风科技股份有限公司 | Closed cabinet body cooling system and wind generating set |
| CN102562453A (en) * | 2012-03-01 | 2012-07-11 | 国电联合动力技术有限公司 | Pitch control method of variable-speed constant-frequency wind driven power generator at rated revolution speed stage |
| CN102562453B (en) * | 2012-03-01 | 2013-09-04 | 国电联合动力技术有限公司 | Pitch control method of variable-speed constant-frequency wind driven power generator at rated revolution speed stage |
| CN102691621A (en) * | 2012-06-18 | 2012-09-26 | 袁宗凡 | Novel wind driven generator |
| CN103441721A (en) * | 2013-09-04 | 2013-12-11 | 苏州罗兰机电设备有限公司 | Wind power generation device |
| CN103742362A (en) * | 2014-01-15 | 2014-04-23 | 北京金风科创风电设备有限公司 | Independent variable pitch control system and method for direct-drive permanent magnet wind generating set |
| CN103742362B (en) * | 2014-01-15 | 2017-03-01 | 北京金风科创风电设备有限公司 | Independent variable pitch control system and method for direct-drive permanent magnet wind generating set |
| CN107559152A (en) * | 2016-07-01 | 2018-01-09 | 西门子公司 | Wind turbine with wind sensor |
| CN106253616A (en) * | 2016-08-11 | 2016-12-21 | 陈炯 | Super high power wind-power electricity generation long distance powedr transmission electric station |
| CN107701371A (en) * | 2017-09-06 | 2018-02-16 | 合肥凌山新能源科技有限公司 | A kind of power-generating control system of multi fan wind power generating set |
| CN110469461A (en) * | 2019-08-14 | 2019-11-19 | 树根互联技术有限公司 | A kind of fracture predictor method of blower tooth band, its device and readable storage medium storing program for executing |
| CN110469461B (en) * | 2019-08-14 | 2020-09-18 | 树根互联技术有限公司 | Fracture estimation method and device for fan toothed belt and readable storage medium |
| CN112688525A (en) * | 2020-12-16 | 2021-04-20 | 浙江华云信息科技有限公司 | Electric power collection equipment based on thing networking |
| CN112688525B (en) * | 2020-12-16 | 2021-09-28 | 浙江华云信息科技有限公司 | Two-stage voltage-stabilizing power acquisition system |
| CN113538992A (en) * | 2020-12-30 | 2021-10-22 | 北京金风慧能技术有限公司 | Variable-pitch teaching equipment of wind generating set |
| CN113217281A (en) * | 2021-05-11 | 2021-08-06 | 上海电气风电集团股份有限公司 | Wind power generation system, control method and device thereof, electronic device, and storage medium |
| CN113217281B (en) * | 2021-05-11 | 2022-12-09 | 上海电气风电集团股份有限公司 | Wind power generation system, control method and device thereof, electronic device, and storage medium |
| CN113217284A (en) * | 2021-05-17 | 2021-08-06 | 广州赛特新能源科技发展有限公司 | Direct-drive breeze wind driven generator system |
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