CN102410150B - Mechanically-coupled mini-type hybrid wind power generating system capable of storing energy in form of compressed air - Google Patents
Mechanically-coupled mini-type hybrid wind power generating system capable of storing energy in form of compressed air Download PDFInfo
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- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
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Abstract
The invention relates to a mechanically-coupled mini-type hybrid wind power generating system capable of storing energy in form of compressed air. The mechanically-coupled mini-type hybrid wind power generating system capable of storing energy in the form of compressed air comprises a wind turbine, the wind turbine is in shaft connection with a planetary framework of a planetary gear through an electromagnetic brake I; a solar wheel shaft of the planetary gear is connected with a swirling compounding machine through a transmission mechanism; an electromagnetic brake II or a speed reducing motor are arranged on the solar wheel shaft; the swirling compounding machine is connected with an air storing device through an air passage; a flow control valve and a check valve are arranged on the air passage; the gear ring of the planetary gear is connected with a wind power generator through a synchronous transmission belt; and the wind power generator is connected with a current transformer. The mechanically-coupled mini-type hybrid wind power generating system capable of storing energy in the form of compressed air can regulate the rotation speed of the swirling compounding machine by a pneumatic control technology and change the rotation speed of the wind turbine, so that a maximum wind energy tracking function is realized; and the swirling compounding machine is used as an energy transforming device to store surplus energy which is not used for the moment in the form of compressed air, so that a storage battery is replaced and environment pollution is greatly reduced.
Description
Technical field
The present invention relates to a kind of wind-power generating system, especially a kind of mechanical coupling type compressed air energy storage micro hybrid wind power generation system.
Background technique
As a kind of renewable energy power generation mode of cleaning, wind generating technology has obtained development rapidly.Yet there is following several major issue in present wind power technology particularly small wind: at first, the wave properties of wind energy and the intermittent significantly change that will cause output power have a negative impact to load stable operation; Secondly, traditional wind power system is the rigidity Mechanical ﹠ Electrical Combination System, and the parts such as fan blade, main shaft and motor bear very large mechanical stress, causes its rate of fault high, and maintenance cost is high; Again, miniature wind power generation system is not generally controlled the wind-powered electricity generation conversion links at present, causes power coefficient lower, and is the highest only in 0.3 left and right; At last, Small Wind-electric Systems adopts storage battery as energy storage device mostly, but exist maintenance require high, cycle life is short and environment is had the defective such as very big pollution.
Stored energy is to stabilize one of wind energy wave properties and intermittent effective means.As the energy storage mode that is most widely used, storage battery in use has many restrictions and problem, and as can not super-charge super-discharge, SOC be difficult to estimate, cycle life is short etc., and in production process and waste treatment, environment is caused severe contamination.And compressed-air energy storage has the detection of being easy to and control, environmental pollution is little, etc. plurality of advantages, worldwide receives much concern, and is considered to the energy storage system that the new century has prospect.
The Caes technology of current research is mainly to utilize the electric power of low power consumption, adopt air compressor with compressed-air-storing in the grotto of sealing; When peak of power consumption, pressurized air mixes with rock gas, burns, expands to drive the generating of gas turbine drive generator.In this mode, the compressed-air energy storage Main Function is peak load shifting, and working procedure still has pollution to environment.
Miniature wind power generation system generally adopts and does not control the structure that rectification adds controlled inversion at present, and uses storage battery as energy storage device, is articulated on dc bus.Impact for the fluctuation of wind energy causes can absorb and eliminate by storage battery and current transformer.Although can realize like this variable-speed operation of blower fan, the reliability of equipment is had higher requirement: the charging and discharging currents of storage battery can not be excessive, need to increase corresponding protective measure.And in real system, for reducing costs consideration, this part is usually very simple even not to be had.And current transformer limits due to device, very easily causes damage for larger voltage current impact, cause that rate of fault is high, stability and reliability relatively poor etc.
For the problems referred to above that electrical couplings occurs, people have proposed the front end at wind power system, and namely mechanical part is coupled to reducing and eliminating the wind-force fluctuation to impact and the impact of rear end electrical equipment.Patent of invention WO2008/061263 utilizes planetary pinion to be the compensation gear, and adopts hydraulic transmission as arrangements for speed regulation, to realize the constant-speed operation of generator when wind speed changes.And Chinese invention patent application 201010602586 (publication number CN102013762A) has used planetary pinion as speed changer equally, and adopts torque motor as speed setting unit.The shortcomings such as but this dual mode all is required to be arrangements for speed regulation energy is provided, and exists control system complicated, and capacity usage ratio is low, and loss is large.
Chinese invention patent application 201110146879 (publication number 102230459A) designed a kind of wind-electricity complementary type, for the production of compressed-air actuated structure.This structure can't realize the generation of electric energy, and can't realize the tracking of wind energy peak use rate by regulating the wind energy conversion system rotating speed.
Summary of the invention
The objective of the invention is for overcoming above-mentioned the deficiencies in the prior art, a kind of mechanical coupling type compressed air energy storage micro hybrid wind power generation system is provided, when not only can regulating eddy type complex machine rotating speed by Pneumatic Control Technology, this system changes the rotating speed of wind energy conversion system, realize the maximum function of following the tracks of of wind energy, and adopt the eddy type complex machine as energy conversion device, temporary transient no excess energy is stored with compressed-air actuated form, replace storage battery, greatly alleviated environmental pollution.
For achieving the above object, the present invention adopts following technical proposals:
A kind of mechanical coupling type compressed air energy storage micro hybrid wind power generation system, comprise wind energy conversion system, described wind energy conversion system is connected with planetary planet carrier shaft by electromagnetic brake I, described planetary sun wheel shaft is connected with the eddy type complex machine by driving mechanism, described sun wheel shaft is provided with electromagnetic brake II or speed-adjustable motor, the eddy type complex machine is connected with caisson by the gas passageway, and on described gas passageway, parallel connection is provided with flow control valve and safety check; Described planetary gear ring is connected with wind-driven generator by the synchronous transfer band, and wind-driven generator is connected with current transformer, and current transformer is connected with load;
On described wind energy conversion system, eddy type complex machine and wind-driven generator and planetary coupling shaft, speed probe is installed all, described wind-driven generator output terminal is equipped with current sensor, in described gas holder, gas pressure sensor is installed; On the host housing of described system, air velocity transducer is installed; The output signal of above-mentioned each sensor is connected with upper-position unit by wire respectively;
Described upper-position unit also is connected with current transformer with control electromagnetic brake I, electromagnetic brake II, flow control valve.
Upper-position unit output digital quantity signal is used for controlling the working state (brake or cut off) of electromagnetic brake I and electromagnetic brake II, and the output analog signals is big or small for the aperture of controlling flow control valve, and output pwm signal is controlled opening and turn-offing of current transformer IGBT.
Described caisson is gas holder.
The present invention connects together eddy type complex machine, wind energy conversion system and wind-driven generator by planetary pinion, wherein wind energy conversion system is connected with planetary planet carrier shaft, and the eddy type complex machine is connected with planetary sun wheel shaft and gear ring respectively with wind-driven generator.When wind-force is larger, utilize the characteristic of planetary pinion Kinematic Decomposition, jointly rotated by wind energy conversion system driving wind-driven generator and eddy type complex machine, utilize eddy type complex machine flow control technique, will store with compressed-air actuated form by the eddy type complex machine over the excess energy of loading demand; Lower at wind speed, when wind energy can't satisfy loading demand fully, the Conversion of Energy that will be stored in pressurized air by the eddy type complex machine is mechanical energy, utilize planetary pinion motion composite character, jointly provide power for wind-driven generator by eddy type complex machine and wind energy conversion system.And when calm or wind-force can't start wind energy conversion system, driving separately wind-driven generator work by the eddy type complex machine, this moment, wind energy conversion system was not worked.
This wind-power generating system mainly contains the equipment such as wind energy conversion system, generator, current transformer, gas holder, planetary pinion, eddy type complex machine, and corresponding detection, control and actuating device.Wherein the major function of each several part is:
Wind energy conversion system is used for absorbing wind energy, and is translated into mechanical energy as prime mover.
Wind-driven generator and corresponding convertor equipment are used for mechanical energy is converted into the electric energy that is fit to the load utilization.
Gas holder is used for excess energy is stored with compressed-air actuated form.
Planetary pinion has three rotatingshafts to allow the power I/O, has the ability of the composition and decomposition of the motion of realizing.Can take in addition the mode such as mechanical braking to limit the wherein rotation of an axle, remaining two axles carry out transmission, and this moment, planetary pinion became the one-level speed change gear, and can realize larger velocity ratio.Between three major component gear rings, sun gear and planet carriers, rotating speed meets relation
Wherein k is the gear ratio of gear ring and sun gear.
The effect of eddy type complex machine is the mutual conversion of completing between mechanical energy and gas internal energy.Compare with the pneumatic equipment of other other types such as piston compressor, scroll machine has the plurality of advantages such as energy conversion efficiency is high, compact structure.Eddy type complex machine in the present invention and published Chinese patent application 201110002249, it is identical that name is called the complex machine of the scroll compression-expansion compound machine of compressed air energy storage technology " be used for ", and working principle and the working procedure of eddy type complex machine had comparatively detailed introduction and explanation.In the present invention, two gas passageways are arranged between eddy type complex machine and gas holder: wherein a path is equipped with safety check (being one-way valve), and another path is equipped with flow control valve.When the eddy type complex machine worked in compact model, flow control valve cut out fully, and gas can only pass through safety check (one-way valve) from the eddy type complex machine to the gas holder one-way flow.And when the eddy type complex machine works in expansion mechanism, due to the blocking effect of safety check (one-way valve), gas can only be by flow control valve by gas holder to eddy type complex machine one-way flow.
Due to the wave properties of wind energy and the uncertainty of load, there are following four kinds of mode of operations in the present invention:
1. wind energy conversion system independent operation mode
If energy and loading demand that current wind-force can provide are more or less the same, when wind energy can satisfy the load power demand just, electromagnetic brake II energising worked in braking state.Sun wheel shaft is not rotated, and the eddy type complex machine is by locked.The wind energy that wind energy conversion system obtains passes to wind-driven generator by planet carrier shaft through gear ring and synchronous transfer band.Under this operating mode, this wind-power generating system is basically identical with the working state of conventional small wind power system, and planetary pinion plays the effect of speed increaser.
2. compressed energy-storage pattern
Suddenly become large or load reduces at wind speed, when causing available wind energy well beyond loading demand, electromagnetic brake II dead electricity cuts off with sun wheel shaft, closes simultaneously flow control valve.This moment, planetary working state was: planet carrier as the energy input shaft, is a driving part, and sun gear and gear ring are driven member as two energy output shafts.The wind energy that wind energy conversion system obtains is by planet carrier shaft, and a part passes to wind-driven generator by gear ring and synchronous transfer band, and another part passes to the eddy type complex machine through sun wheel shaft and driving mechanism.Due to the one-way flow effect of safety check, gas can only be flowed into gas holder and can't be refluxed by the eddy type complex machine, and complex machine is operated in compressive state.Can utilize the function of planetary pinion Kinematic Decomposition when the wind energy conversion system absorbed power surpasses loading demand, unnecessary energy is delivered to this branch road of eddy type complex machine, and store with compressed-air actuated form.If (electromagnetic brake II is changed into speed-adjustable motor, can pass through to regulate the rotating speed of sun wheel shaft, thereby can regulate the rotation speed relation between gear ring and planet carrier.So not only the eddy type complex machine can absorb unnecessary energy, and can be according to the situation of wind speed and load variations, the rotating speed of dynamic adjustments sun wheel shaft, and then to regulate planet carrier be the rotating speed of wind energy conversion system, makes in its interval that operates in high wind energy utilization.Compare with the situation that wind energy conversion system rotating speed in the conventional small wind-power generating system is fixed substantially, can absorb more windy power and be used for storage, realized the effect that maximal wind-energy is followed the tracks of.)
3. expansion assistant mode
When wind speed reduces suddenly or load increases, when causing wind energy to satisfy loading demand fully, electromagnetic brake II dead electricity cuts off with sun wheel shaft, simultaneously the turn-on flow rate control valve.Due to the inhibition of safety check, in gas holder, gas is communicated with the eddy type complex machine by flow control valve.The torque that pressurized gas produces is greater than the torque of importing into by sun wheel shaft and gear, and the eddy type complex machine works in swelling state.In the conventional small wind-power generating system, due to the clamping action that has storage battery, the wind energy conversion system rotating speed remains unchanged substantially.The power section that this moment is not enough is responsible for replenishing by storage battery.Can find by diagram, this moment, off-target operation point, wind energy conversion system operation point was the Wind Power Utilization peak, still had the part wind energy not to be absorbed and used, and wind energy utilization reduces.This moment, planetary working state was: planet carrier and sun gear are driving part as two energy input shafts, and gear ring as the energy output shaft, is a driven member.The required power part of load by the wind energy conversion system capturing wind energy through planet carrier shaft, insufficient section is expanded by the eddy type complex machine and releases energy through driving mechanism and sun wheel shaft in addition, two-part energy all is delivered to above gear ring, and passes to wind-driven generator by the synchronous transfer band.Substantially fixing with conventional small wind-power generating system wind energy conversion system rotating speed, thereby cause wind energy utilization active adjustment to compare, in structure of the present invention, regulate the rotating speed of eddy type complex machine by the aperture size of adjust flux control valve, can regulate gear ring is the rotating ratio of wind energy conversion system and generator to planet carrier.Utilize the rotational speed regulation function of eddy type complex machine, make wind energy conversion system operate under current wind speed maximum power point place, absorption wind energy as much as possible.The part that all the other are not enough, the function of utilizing the planetary pinion motion to synthesize is replenished by the eddy type complex machine, thereby satisfies the demand of load.
4. complex machine independent operation mode
At calm or wind speed during lower than the startup wind speed of wind energy conversion system, electromagnetic brake I energising, being that wind energy conversion system is locked with planet carrier does not rotate, and the eddy type complex machine works under swelling state, load institute energy requirement is provided by it fully, and planetary pinion has played the effect of speed changer.
The invention has the beneficial effects as follows:
Mutual switching by four kinds of mode of operations, medium take the eddy type complex machine as Conversion of Energy, realized the conversion of wind energy-mechanical energy-gas internal energy-mechanical energy-electric energy, wind energy more than needed is stored with compressed-air actuated form, and discharge in needs, stabilize the output that the wind energy fluctuation brings unstable, guaranteed the continuity of load supply.
Similar to batteries to store energy, compressed-air energy storage also has the concept that is similar to SOC.The pressurized gas that volume is determined, the energy that comprises is relevant with its pressure and temperature.Compare with the traditional storage battery energy storage, do not need complicated surveying instrument and computational methods, only need to go out the pressure and temperature of store compressed air by sensor measurement, can calculate the size that it comprises energy, be easy to formulate corresponding control strategy.
Compressed air energy storage technology of the present invention is the medium that utilizes the eddy type complex machine mutually to transform as gas internal energy and mechanical energy, energy conversion efficiency is high, compressed media is air, overall process is pollution-free, there is not the combustion pollution problem of conventional compression air energy storing and electricity generating technology, is particularly suitable for the intermittent distributed generation system that this class of wind-power electricity generation has rotating machinery.Simultaneously, the vortex complex machine is by controllable clutch and wind turbine coupling, can greatly reduce the mechanical stress of various parts, reduce deterioration, (the startup wind speed of conventional small wind-power generating system is 3m/s to widen system's effective wind speed scope, and the present invention is in the situation that fully calmly still can drive generated output power), extend wind-power generating system working life.
Description of drawings
Fig. 1 is that system of the present invention consists of schematic diagram;
Fig. 2 is the converter circuit schematic diagram;
Fig. 3 is the system control signal flow chart;
Fig. 4 is system's control flow chart;
1. wind energy conversion systems wherein; 2. electromagnetic brake I; 3. gear ring; 4. sun wheel shaft; 5. planet carrier shaft; 6. flow control valve; 7. safety check; 8. electromagnetic brake II or control motor; 9. synchronous transfer band; 10. driving mechanism, 11. planetary pinions, 12. eddy type complex machines, 13. gas holder, 14. wind-driven generators, 15. current transformers, 16. load, 17. the wind energy conversion system speed probe, 18. eddy type complex machine speed probes, 19. wind-driven generator speed probes, 20. current sensor, 21. gas pressure sensor, 22. air velocity transducers, 23. current transformer IGBT driving signal input.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
As shown in Fig. 1-4, a kind of mechanical coupling type compressed air energy storage micro hybrid wind power generation system, comprise wind energy conversion system 1, described wind energy conversion system 1 is connected with the planet carrier shaft 5 of planetary pinion 11 by electromagnetic brake I 2, the sun wheel shaft 4 of described planetary pinion 11 is connected with eddy type complex machine 12 by driving mechanism 10, described sun wheel shaft 4 is provided with electromagnetic brake II or speed-adjustable motor 8, eddy type complex machine 12 is connected with gas holder 13 by the gas passageway, and on described gas passageway, parallel connection is provided with flow control valve 6 and safety check 7; The gear ring 3 of described planetary pinion 11 is connected with wind-driven generator 14 by synchronous transfer band 9, and wind-driven generator 14 is connected with current transformer 15, and current transformer 15 is connected with load 16;
Be separately installed with wind energy conversion system speed probe 17, eddy type complex machine speed probe 18, wind-driven generator speed probe 19 on the coupling shaft of wind energy conversion system 1, eddy type complex machine 12 and wind-driven generator 14 and planetary pinion 11, wind-driven generator 14 output terminals are equipped with current sensor 20, and gas pressure sensor 21 is installed in gas holder 13; Air velocity transducer 22 is installed on the host housing of system; The output signal of above-mentioned each sensor is connected with upper-position unit by wire respectively; Upper-position unit also is connected with current transformer 15 with control electromagnetic brake I2, electromagnetic brake II8, flow control valve 6.
Upper-position unit output digital quantity signal is used for controlling the working state (brake or cut off) of electromagnetic brake I2 and electromagnetic brake II8, and the output analog signals is used for controlling the aperture size of flow control valve 6, output pwm signal is controlled current transformer IGBT driving signal input 23, in order to control opening and turn-offing of IGBT.
The present invention connects together eddy type complex machine 12, wind energy conversion system 1 and wind-driven generator 14 by planetary pinion 11, wherein wind energy conversion system 1 is connected with the planet carrier shaft 5 of planetary pinion 11, and eddy type complex machine 12 is connected with sun wheel shaft 4 and the gear ring 3 of planetary pinion 11 respectively with wind-driven generator 14.When wind-force is larger, utilize the characteristic of planetary pinion 11 Kinematic Decompositions, driving wind-driven generator 14 by wind energy conversion system 1 rotates jointly with eddy type complex machine 12, utilize eddy type complex machine 12 flow control techniques, will store with compressed-air actuated form by eddy type complex machine 12 over the excess energy of loading demand; Lower at wind speed, when wind energy can't satisfy loading demand fully, the Conversion of Energy that will be stored in pressurized air by eddy type complex machine 12 is mechanical energy, utilize planetary pinion 11 motion composite characters, jointly provide power for wind-driven generator 14 by eddy type complex machine 12 and wind energy conversion system 1.And when calm or wind-force can't start wind energy conversion system, driving separately wind-driven generator 14 work by eddy type complex machine 12, this moment, wind energy conversion system 1 was not worked.
Wherein the major function of each several part is:
Wind energy conversion system 1 is used for absorbing wind energy, and is translated into mechanical energy as prime mover.
Wind-driven generator 14 and corresponding convertor equipment are used for mechanical energy is converted into the electric energy that is fit to the load utilization.
Gas holder 13 is used for excess energy is stored with compressed-air actuated form.
Planetary pinion 11 has three rotatingshafts to allow the power I/O, has the ability of the composition and decomposition of the motion of realizing.Can take in addition the mode such as mechanical braking to limit the wherein rotation of an axle, remaining two axles carry out transmission, and this moment, planetary pinion 11 became the one-level speed change gear, and can realize larger velocity ratio.Between three major component gear rings 3, sun gear and planet carriers 5, rotating speed meets relation
Wherein k is the gear ratio of gear ring 3 and sun gear.
The effect of eddy type complex machine 12 is mutual conversions of completing between mechanical energy and gas internal energy.Compare with the pneumatic equipment of other other types such as piston compressor, scroll machine has the plurality of advantages such as energy conversion efficiency is high, compact structure.Eddy type complex machine 12 and published Chinese patent application 201110002249 in the present invention, it is identical that name is called the complex machine of the scroll compression-expansion compound machine of compressed air energy storage technology " be used for ", and this patent application has comparatively detailed introduction and explanation to working principle and the working procedure of eddy type complex machine.In the present invention, two gas passageways are arranged between eddy type complex machine 12 and gas holder 13: wherein a path is equipped with safety check 7 (being one-way valve), and another path is equipped with flow control valve 6.When eddy type complex machine 12 worked in compact model, flow control valve 6 cut out fully, gas can only through safety check 7 (one-way valve) from eddy type complex machine 12 to gas holder 13 one-way flow.And when eddy type complex machine 12 works in expansion mechanism, due to the blocking effect of safety check 7 (one-way valve), gas can only by flow control valve 6 by gas holder 13 to eddy type complex machine 12 one-way flow.
Due to the wave properties of wind energy and the uncertainty of load, there are following four kinds of mode of operations in the present invention:
1. wind energy conversion system 1 independent operation mode
If energy and loading demand that current wind-force can provide are more or less the same, when wind energy can satisfy the load power demand just, electromagnetic brake II 8 energisings worked in braking state.Sun wheel shaft 4 is not rotated, and eddy type complex machine 12 is by locked.The wind energy that wind energy conversion system 1 obtains passes to wind-driven generator 14 by planet carrier shaft 5 through gear ring 3 and synchronous transfer band 9.Under this operating mode, this wind-power generating system is basically identical with the working state of conventional small wind power system, and planetary pinion 11 plays the effect of speed increaser.
2. compressed energy-storage pattern
Suddenly become large or load reduces at wind speed, when causing available wind energy well beyond loading demand, electromagnetic brake II 8 dead electricity cut off with sun wheel shaft 4, close simultaneously flow control valve 6.This moment, the working state of planetary pinion 11 was: planet carrier as the energy input shaft, is a driving part, and sun gear and gear ring 3 are driven member as two energy output shafts.The wind energy that wind energy conversion system 1 obtains is by planet carrier shaft 5, and a part passes to wind-driven generator 14 by gear ring 3 and synchronous transfer band 9, and another part passes to eddy type complex machine 12 through sun wheel shaft 4 and driving mechanism 10.Due to the one-way flow effect of safety check 7, gas can only be flowed into gas holder 13 and can't be refluxed by eddy type complex machine 12, and eddy type complex machine 12 is operated in compressive state.Can utilize the function of planetary pinion 11 Kinematic Decompositions when wind energy conversion system 1 absorbed power surpasses loading demand, unnecessary energy is delivered to eddy type complex machine 12 these branch roads, and store with compressed-air actuated form.If (electromagnetic brake II 8 is changed into speed-adjustable motor, can pass through to regulate the rotating speed of sun wheel shaft 4, thereby can regulate the rotation speed relation between gear ring 3 and planet carrier.So not only eddy type complex machine 12 can absorb unnecessary energy, and can be according to the situation of wind speed and load variations, the rotating speed of dynamic adjustments sun wheel shaft 4, and then to regulate planet carrier be the rotating speed of wind energy conversion system 1, makes in its interval that operates in high wind energy utilization.Compare with the situation that wind energy conversion system rotating speed in the conventional small wind-power generating system is fixed substantially, can absorb more windy power and be used for storage, realized the effect that maximal wind-energy is followed the tracks of.)
3. expansion assistant mode
When wind speed reduces suddenly or load increases, when causing wind energy to satisfy loading demand fully, electromagnetic brake II 8 dead electricity cut off with sun wheel shaft 4, simultaneously turn-on flow rate control valve 6.Due to the inhibition of safety check 7, the interior gas of gas holder 13 is communicated with eddy type complex machine 12 by flow control valve 6.The torque that pressurized gas produces is greater than the torque of importing into by sun wheel shaft 4 and driving mechanism 10, and eddy type complex machine 12 works in swelling state.In the conventional small wind-power generating system, due to the clamping action that has storage battery, wind energy conversion system 1 rotating speed remains unchanged substantially.The power section that this moment is not enough is responsible for replenishing by storage battery.Wind energy conversion system 1 off-target operation point, operation point is the Wind Power Utilization peak, still has the part wind energy not to be absorbed and used, and wind energy utilization reduces.This moment, the working state of planetary pinion 11 was: planet carrier and sun gear are driving part as two energy input shafts, and gear ring 3 as the energy output shaft, is a driven member.The required power part of load by wind energy conversion system 1 capturing wind energy through planet carrier shaft 5, insufficient section is expanded by eddy type complex machine 12 and releases energy through driving mechanism 10 and sun wheel shaft 4 in addition, two-part energy all is delivered to above gear ring 3, and passes to wind-driven generator 14 by synchronous transfer band 9.Substantially fixing with conventional small wind-power generating system wind energy conversion system rotating speed, thereby cause wind energy utilization active adjustment to compare, in structure of the present invention, regulate the rotating speed of eddy type complex machine 12 by the aperture size of adjust flux control valve 6, can regulate gear ring 3 is the rotating ratio of wind energy conversion system and generator to planet carrier.Utilize the rotational speed regulation function of eddy type complex machine 12, make wind energy conversion system 1 operate under current wind speed maximum power point place, absorption wind energy as much as possible.The part that all the other are not enough, the functions of utilizing planetary pinion 11 motions to synthesize are replenished by eddy type complex machine 12, thereby satisfy the demand of load.
4. complex machine independent operation mode
At calm or wind speed during lower than the startup wind speed of wind energy conversion system 1, electromagnetic brake I 2 energisings, being that wind energy conversion system 1 is locked with planet carrier does not rotate, and eddy type complex machine 12 works under swelling state, load institute energy requirement is provided by it fully, and planetary pinion 11 has played the effect of speed changer.
Claims (3)
1. mechanical coupling type compressed air energy storage micro hybrid wind power generation system, comprise wind energy conversion system, it is characterized in that, described wind energy conversion system is connected with planetary planet carrier shaft by electromagnetic brake I, described planetary sun wheel shaft is connected with the eddy type complex machine by driving mechanism, described sun wheel shaft is provided with electromagnetic brake II or speed-adjustable motor, and the eddy type complex machine is connected with caisson by the gas passageway, and on described gas passageway, parallel connection is provided with flow control valve and safety check; Described planetary gear ring is connected with wind-driven generator by the synchronous transfer band, and wind-driven generator is connected with current transformer, and current transformer is connected with load;
On described wind energy conversion system, eddy type complex machine and wind-driven generator and planetary coupling shaft, speed probe is installed all, described wind-driven generator output terminal is equipped with current sensor, in described caisson, gas pressure sensor is installed; On the host housing of described system, air velocity transducer is installed; The output signal of above-mentioned each sensor is connected with upper-position unit by wire respectively;
Described upper-position unit also is connected with current transformer with control electromagnetic brake I, electromagnetic brake II, flow control valve.
2. mechanical coupling type compressed air energy storage micro hybrid wind power generation system according to claim 1, is characterized in that, described speed probe comprises wind energy conversion system speed probe, eddy type complex machine speed probe and wind-driven generator speed probe.
3. mechanical coupling type compressed air energy storage micro hybrid wind power generation system according to claim 1, is characterized in that, described caisson is gas holder.
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| CN102748226A (en) * | 2012-06-14 | 2012-10-24 | 江苏聚源风电科技有限公司 | Adjustable air pressure energy storage power generation device |
| CN103758702A (en) * | 2014-01-20 | 2014-04-30 | 青岛格兰德新能源有限公司 | Breeze engine, power generation system and air compression system |
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