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WO2015106637A1 - Wind-power air compression and electric generating system - Google Patents

Wind-power air compression and electric generating system Download PDF

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Publication number
WO2015106637A1
WO2015106637A1 PCT/CN2015/000033 CN2015000033W WO2015106637A1 WO 2015106637 A1 WO2015106637 A1 WO 2015106637A1 CN 2015000033 W CN2015000033 W CN 2015000033W WO 2015106637 A1 WO2015106637 A1 WO 2015106637A1
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WO
WIPO (PCT)
Prior art keywords
air
electric
wind
power
vessel
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Ceased
Application number
PCT/CN2015/000033
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French (fr)
Inventor
Dianjun LIU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEIJING HENGQI NEW ENERGY TECHNOLOGIES Ltd
Original Assignee
BEIJING HENGQI NEW ENERGY TECHNOLOGIES Ltd
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Publication of WO2015106637A1 publication Critical patent/WO2015106637A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/28—Wind motors characterised by the driven apparatus the apparatus being a pump or a compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10—Combinations of wind motors with apparatus storing energy
    • F03D9/17—Combinations of wind motors with apparatus storing energy storing energy in pressurised fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • F03D9/255—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
    • 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
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
    • 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
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/50—Energy storage in industry with an added climate change mitigation effect

Definitions

  • the invention to be described herein relates to a wind-power air compression and electric generating system, which belongs the field of electric generation technology.
  • the energy is always converted from one form into another form, and then converted from another form into further anther form.
  • the wind-power electric generation the windmill drives the wind turbine, and then the wind turbine drives the electric generator to generate electric.
  • Wind-power air compression system is usually that the windmill drives the circular wheel, and the circular wheel drives the crank and the connecting rod to move and the connecting rod drives the piston to move.
  • the piston compresses the air in the air cylinder and then stores the compressed air into the air vessel; that is, it makes the wind energy convert into the compressed air energy firstly.
  • the compressed air stored in the air vessel drives the gas turbine to rotate secondly, and the gas turbine drives the electric generator to generate electric thirdly, that is, it makes the compressed air energy convert into the electric energy; or makes the wind energy convert into electric compressed air energy.
  • the prior art Energy conversion are occurred without simultaneously, so that the functions of these components are not utilized efficiently, the energy are wasted at mean time.
  • the purpose of the invention is to provide a wind-power air compression and electric generating system.
  • the said system compresses the air and stores the wind energy with the form of compression air while electric power generation.
  • the invention provide a wind-power air compression and electric generating system, wherein, it includes air compression sub-system and wind-power electric generation sub-system, characterized in that, the air compression sub-system includes circular wheel which is configured with magnets whose N pole and S pole are placed alternatively; the electric generating sub-system includes the stator circle which is set around the circumference of the circular wheel and is configured with several groups of coils; the axis of the windmill is fixed at the center of the circular wheel.
  • the circular wheel has convex connecting knob which is connected to the crank of the air cylinder; the crank is connected to the connecting rod of the air cylinder; the connecting rod is connected to the piston of the air cylinder.
  • the air cylinder is connected alternatively to a first vessel or a second air vessel through a first selector valve.
  • the first air vessel and the second air vessel alternatively supply compressed air to the air motor through a second selector valve.
  • the wind-power air compression and electric generating system further includes controller, rectifier and a first inverter, the windmill drives the circular wheel rotating; the AC electric power generated from the several group coils is converted to DC electric power by rectifier and the filter; the DC electric power is converted to three-phase AC electric power by the inverter and then is fed to the electric grid.
  • the wind-power air compression and electric generating system further includes an electric generator and a second inverter , the air motor drives the rotator of the electric generator, the coils on the rotator generates alternative electric power; the altemative electric power after being rectified, being filtered and being inverted, is fed to the electric grid.
  • the controller controls the state of the first selector valve according to the air pressure of the first air vessel and the second air vessel.
  • the outlets of the first air vessel and the second vessel are configured with electromagnetic valves respectively; the controller controls the state of the two electromagnetic valves according to the grid load.
  • the controller sends control instruction to the second selector valve to make the first air vessel and the second vessel altematively supply compressed air to the air motor.
  • the system provided by the invention also produces compressed air while generating electric power, electricity produced by the compressed air can compensate the lack of electricity when the load of electhc grid is higher.
  • Figure 1 is the block diagram of the wind-power air compression and electric generating system provided by the invention.
  • Figure 2 is the control flow chart of the air compressed by the wind-power air compression and electric generating system provided by the invention
  • Figure 3 is the control flow chart of the electricity generated by the wind-power air compression and electric generating system provided by the invention
  • Figure 1 is the block diagram of the wind-power air compression and electric generating system provided by the invention, as shown in figure 1, the said system includes an air compression sub-system and a wind-power electric generation sub-system
  • the wind-power air compression sub-system includes a circular wheel, and the circular wheel is configured with magnets whose N pole and S pole are placed alternatively.
  • the electric generating system includes a stator circle, and the stator circle 1 is configured with several groups of coils.
  • the air compression system includes a circular wheel 4, an air cylinder 7, a piston 8, a connecting rod 6, a crank 5, a first air vessel, a second air vessel and a first selector valve 11.
  • the circular wheel is configured with magnets whose N pole and S pole are placed alternatively; the axis of the windmill is fixed at the central of the circular wheel.
  • the piston is placed in the air cylinder.
  • One end of the connecting rod 6 is connected with the piston, the other end of the connecting rod is connected with the fist end of crank 5.
  • the axis of the windmill is fixed at the center of the axis 3.
  • the circular wheel rotates as the windmill rotates; the second end of the crank is flexibly connected with the point which derivate the center of the circular wheel.
  • the air cylinder has air inlet and outlet at its bottom, and the inlet is configured with one way valve 9.
  • the outlet is configured with one way valve 10.
  • the air cylinder is connected to the inlet of the selector valve through the one way valve.
  • the first and the second air vessels supply compressed air to outside by a first electromagnet valve 12 and a second electromagnet valve 13 respectively and inside the two air vessels are configured with a first pressure sensor and a second sensor respectively, and the first and the second pressure sensor are connected to the controller.
  • the controller controls the state of the first selector valve according to the pressure signals delivered from the first and the second pressure sensor.
  • the controller controls the state of the first electromagnetic valve 12 and the second electromagnetic valve 13 according to the grid loading.
  • the wind-power air compression system also includes a controller, a rectifier, a first inverter and a first voltage sampling circuit
  • the windmill drives the circular wheel to rotate the alternative electric power produced by the groups of coil is rectified by the rectifier which is consisted of diodes D1, D2, G3, D4, D5 and D6, and then is filtered by the filter which is consisted of an inductor L1 and a capacitor C, is converted to be DC voltage finally.
  • the DC voltage is converted to three-phase AC voltage by the first inverter, and then three-phase AC voltage is fed to the local grid.
  • the first voltage sampling circuit is used to sample the voltage output by the first inverter and provides the sampling signal to the controller.
  • a current sampling circuit is arranged on the electric grid either.
  • the wind-power air compression and electric generating system also includes an air motor, a electric generator, a second inverter, a second voltage sampling circuit and a NC switcher.
  • the air motor drives the rotor of the electric generator to rotate, the coils on the stator produces alternative current, the alternative current is fed to the second inverter, the second inverter converts the alternative current into a three-phase altemative current, the second voltage sampling circuit is used to sample the voltage of electric signal output by the second inverter and then provides the sampled voltage to the controller
  • the controller sends control instruction to the second selector valve in order that the first and the second air vessels supply the compressed air alternatively to the air motor
  • the controller controls amplitude and the phase of the voltage generated by the first and the second inverters according to the sampled voltage signal and the sampled current signal delivered by the first and the second sampling circuits.
  • Figure 2 is the control flow chart of the air compressed by the wind-power air compression and electric generating system provided by the invention, and the controlling process is as follow:
  • Step 1 Letting the controller sent a control instruction to the first and the second electromagnetic valves respectively in order not to make the first air vessel supply air to the outside;
  • Step 2 Detecting the pressure signal delivered from the first pressure sensor
  • Step 3 Judging, if the average pressure of the first pressure sensor is lesser than a first given pressure value, execute step 4; or else , go to execute the step 7;
  • Step 4 Sending a control instruction to the first selector valve in order that the air compression cylinder charges the first air vessel with air and delaying a period of time T;
  • Step 5 Detecting the first pressure sensor
  • Step 6 Judging, if the pressure of the first pressure sensor is still lesser than the first given pressure value, then return to step 4; or else, go to step 7;
  • Step 7 Detecting the pressure signal delivered from the second pressure sensor
  • Step 8 Judging, if the average pressure of the second pressure sensor is lesser than the first given pressure value, then execute step 9; or else, return to step 2;
  • Step 9 Sending a control instruction to the first selector valve in order that the air compression cylinder charges the second air vessel with air, and delaying a period of time T;
  • Step 10 Detecting the pressure signal delivered from the second pressure sensor.
  • Step 11 Judging, if the pressure of the second pressure sensor is still lesser than the first given pressure value, return to step 9; or else, return to step 2.
  • FIG. 3 is the control flow chart of the electricity generated by the wind-power air compression and electric generating system provided by the invention, the control process is as follow:
  • Step l Let the controller sent a control instruction to the first and the second electromagnetic valves respectively in order not to the first air vessel supply the compressed air to the outside;
  • Step 2 Detecting the sampled current signal of the grid
  • Step 3 Judging, if the average sampled current is greater than the first given current value, execute step 4; or else, go to execute the step 5;
  • Step 4 Delaying a period of time T;
  • Step 5 Detecting the sampled current signal of the grid
  • Step 6 Judging, if the average sampled current is still greater than the first current given value, return to step 7; or else, go to step 24;
  • Step 7 Sending a control instruction to the first and the second electromagnetic valves respectively, in order that the first and the second air vessels supply the compressed air to the outside;
  • Step 8 Detecting the signal delivered from the first pressure sensor
  • Step 9 Judging, if the pressure in the first air vessel is greater than the second given pressure value, send a control instruction to the second selector valve in order that the first air vessel supply the compressed air to the air motor through the second selector valve, and the air motor drives the electric generator to produce electric power, the said electric power is converted to three-phase alternative current by the converter according to the control instruction from the controller; if the pressure in the first air vessel is lesser than the second given pressure value, execute the step 13;
  • Step 10 Detecting the phase of the three-phase alternative current delivered by the first and the second sampling circuit
  • Step 11 Judging, if the phase of the sampled signal delivered from the second sampling circuit is equal to that delivered from the first sampling circuit, execute the step 12; or else, send a control instruction to the second inverter to adjust the phase of the three-phase alternative current output by the second inverter, and then return to step 10;
  • Step 12 Switching on the NC switch in order that the three-phase alternative current is fed to the grid;
  • Step 13 Delaying a period of time, and detecting the air pressure inside the first air vessel by the first pressure sensor;
  • Step 14 Judging, if the air pressure of the first air vessel is lesser than the second given value, then execute the step 15; or else return to step 13;
  • Step 15 Turning off the NC switcher in order not to connect the second inverter with the grid, and charging the first air vessel with air
  • Step 16 Detecting the second pressure sensor
  • Step 17 Judging, if the pressure in the second air vessel detected by the second pressure sensor is greater than the second given pressure value, send a control instruction to the second selector valve in order that the second air vessel provides the air motor with the compressed air through the second selector valve, the air motor drives the electric generator to produce electric power and the electric power is converted to three-phase alternative current according to the control of the controller, and then execute the step 18; or if the detected pressure is lesser than the second given pressure value, execute the step 21;
  • Step 18 Detecting the phase of the three-phase voltage delivered from the first and the second sampling circuits.
  • Step 19 Judging, if the phase detected by the second sampling circuit is equal to the phase detected by the first sampling circuit, execute the step 20; or else, send a control instruction to the second inverter to adjust the phase of the three-phrase voltage output by the second inverter, and then return to step 18.
  • Step 20 Switching on the NC switcher in order that the three-phrase voltage output by the second inverter is fed to the grid.
  • Step 21 Delaying a period of time, and detecting the pressure of the second air vessel by the second pressure sensor;
  • Step 22 Judging, if the pressure of the second air vessel is lesser than the second given pressure value, execute the step 23; or else returning to step 21.
  • Step 23 Disconnecting the second inverter with the grid by the NC switcher and charging the second air vessel with air
  • Step 24 Delaying a period of time T;
  • Step 25 Detecting the sampled current signal by the current sampling circuit.
  • Step 26 Judging, if the sampled average current is lesser than the second current given current value, then execute step 27; or else, return to step 24.
  • Step 27 Sending a control signal to the first and the second electromagnetic valves in order that the first and the second air vessels stop supplying the compressed air to the outside, and sending a control instruction to the second selector valve in order to stop, and sending a control instruction to NC switcher in order to be disconnected, and then returning to step 2.
  • the high power transformer and low power transformer provided by invention also includes a switching circuit, the switching circuit is powered by AC 220V voltage and provides the controller with +5V, +12V, +24V direct current.
  • Alternative current produced by the system provided by the invention can be provided to a village, a town and the factories, and can also be used in heating, pumping water or oil, and etc.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

There is an apparatus of wind-power air compression and electric generating in the application, which belongs to the field of electric generation technology. The said system includes air compression sub-system and wind-power electric generating sub-system, the air compression sub-system includes a circular wheel (4), which configured with magnets whose N pole and S pole are placed alternatively. The electric generating sub-system includes the stator circle, which is set around the circumference of the circular wheel (4) and is configured with several groups of coils. The axis of the windmill is fixed at centre of the circular wheel (4). The system provided by the invention produces compressed air while it produces electric energy using wind power. The wind energy will be stored with the form of compression air. When the load of the electric grid is higher, the energy stored in compressed air is converted to electric energy to compensate the electric grid dropping.

Description

Wind-power Air Compression and Electric Generating System Technical field
The invention to be described herein relates to a wind-power air compression and electric generating system， which belongs the field of electric generation technology.
Background of the invention
In the prior art， the energy is always converted from one form into another form， and then converted from another form into further anther form. For instance， the wind-power electric generation， the windmill drives the wind turbine， and then the wind turbine drives the electric generator to generate electric. Wind-power air compression system is usually that the windmill drives the circular wheel， and the circular wheel drives the crank and the connecting rod to move and the connecting rod drives the piston to move. The piston compresses the air in the air cylinder and then stores the compressed air into the air vessel； that is， it makes the wind energy convert into the compressed air energy firstly. The compressed air stored in the air vessel drives the gas turbine to rotate secondly， and the gas turbine drives the electric generator to generate electric thirdly， that is， it makes the compressed air energy convert into the electric energy； or makes the wind energy convert into electric compressed air energy. In the prior art， Energy conversion are occurred without simultaneously， so that the functions of these components are not utilized efficiently， the energy are wasted at mean time.
Summary of the invention
In order to overcome the defects of the prior art， the purpose of the invention is to provide a wind-power air compression and electric generating system. The said system compresses the air and stores the wind energy with the form of compression air while electric power generation.
In order to achieve the purpose of the invention， the invention provide a wind-power air compression and electric generating system， wherein， it includes air compression sub-system and wind-power electric generation sub-system， characterized in that， the air compression sub-system includes circular wheel which is configured with magnets whose N pole and S pole are placed alternatively； the electric generating sub-system includes the stator circle  which is set around the circumference of the circular wheel and is configured with several groups of coils； the axis of the windmill is fixed at the center of the circular wheel.
Preferably， the circular wheel has convex connecting knob which is connected to the crank of the air cylinder； the crank is connected to the connecting rod of the air cylinder； the connecting rod is connected to the piston of the air cylinder.
Preferably， the air cylinder is connected alternatively to a first vessel or a second air vessel through a first selector valve.
Preferably， the first air vessel and the second air vessel alternatively supply compressed air to the air motor through a second selector valve.
Preferably， the wind-power air compression and electric generating system further includes controller， rectifier and a first inverter， the windmill drives the circular wheel rotating； the AC electric power generated from the several group coils is converted to DC electric power by rectifier and the filter； the DC electric power is converted to three-phase AC electric power by the inverter and then is fed to the electric grid.
Preferably， the wind-power air compression and electric generating system further includes an electric generator and a second inverter ， the air motor drives the rotator of the electric generator， the coils on the rotator generates alternative electric power； the altemative electric power after being rectified， being filtered and being inverted， is fed to the electric grid.
Preferably， the controller controls the state of the first selector valve according to the air pressure of the first air vessel and the second air vessel.
Preferably， the outlets of the first air vessel and the second vessel are configured with electromagnetic valves respectively； the controller controls the state of the two electromagnetic valves according to the grid load.
Preferably， the controller sends control instruction to the second selector valve to make the first air vessel and the second vessel altematively supply compressed air to the air motor.
Compared with the prior art， the system provided by the invention also produces compressed air while generating electric power， electricity produced by the compressed air can compensate the lack of electricity when the load of electhc grid is higher.
Brief Description of the Drawings
Figure 1 is the block diagram of the wind-power air compression and electric generating system provided by the invention.
Figure 2 is the control flow chart of the air compressed by the wind-power air compression and electric generating system provided by the invention
Figure 3 is the control flow chart of the electricity generated by the wind-power air compression and electric generating system provided by the invention
Description of the Specific Embodiments
We will demonstrate the invention with reference to the drawings. Same reference symbols in the various drawings indicate the same elements.
Figure 1 is the block diagram of the wind-power air compression and electric generating system provided by the invention， as shown in figure 1， the said system includes an air compression sub-system and a wind-power electric generation sub-system The wind-power air compression sub-system includes a circular wheel， and the circular wheel is configured with magnets whose N pole and S pole are placed alternatively. The electric generating system includes a stator circle， and the stator circle 1 is configured with several groups of coils.
For more detailed， the air compression system includes a circular wheel 4， an air cylinder 7， a piston 8， a connecting rod 6， a crank 5， a first air vessel， a second air vessel and a first selector valve 11. Wherein the circular wheel is configured with magnets whose N pole and S pole are placed alternatively； the axis of the windmill is fixed at the central of the circular wheel. The piston is placed in the air cylinder. One end of the connecting rod 6 is connected with the piston， the other end of the connecting rod is connected with the fist end of crank 5. The axis of the windmill is fixed at the center of the axis 3. ， The circular wheel rotates as the windmill rotates； the second end of the crank is flexibly connected with the point which derivate the center of the circular wheel. The air cylinder has air inlet and outlet at its bottom， and the inlet is configured with one way valve 9. The outlet is configured with one way valve 10. The air cylinder is connected to the inlet of the selector valve through the one way valve. The first and the second air vessels supply compressed air to outside by a first electromagnet valve 12  and a second electromagnet valve 13 respectively and inside the two air vessels are configured with a first pressure sensor and a second sensor respectively， and the first and the second pressure sensor are connected to the controller. The controller controls the state of the first selector valve according to the pressure signals delivered from the first and the second pressure sensor. The controller controls the state of the first electromagnetic valve 12 and the second electromagnetic valve 13 according to the grid loading.
The wind-power air compression system also includes a controller， a rectifier， a first inverter and a first voltage sampling circuit， the windmill drives the circular wheel to rotate the alternative electric power produced by the groups of coil is rectified by the rectifier which is consisted of diodes D1， D2， G3， D4， D5 and D6， and then is filtered by the filter which is consisted of an inductor L1 and a capacitor C， is converted to be DC voltage finally. The DC voltage is converted to three-phase AC voltage by the first inverter， and then three-phase AC voltage is fed to the local grid. The first voltage sampling circuit is used to sample the voltage output by the first inverter and provides the sampling signal to the controller. A current sampling circuit is arranged on the electric grid either. When the windmill dives the circular wheel to rotate， the crank thereof rotates. When the crank drives the connecting rod to move upwards， the piston 8 moves towards the top of the air cylinder， one way inlet valve 9 is opened， the air is charged in to the air cylinder 7. When the circular wheel rotates counterclockwise about 180° ， the piston 8 moves to the top of， the air cylinder， the air cylinder 7 is full of air. And then， the circular wheel drives the crank to rotate continuously， the crank drives the connecting rod to move downwards， the piston 8 move towards the bottom of the air cylinder， the one way inlet valve is closed and the one way outlet valve 9 is opened. The air in the cylinder 7 is compressed and is discharged to the first or the second air vessel. When the circular wheel rotates counterclockwise about 360° ， the piston 8 moves to the bottom of the cylinder， the air in the cylinder 8 is injected to the air vessel. By repeating the cycles， the air is compressed to the air vessel， and the coils on the stator circle produce alternative electric power as well.
The wind-power air compression and electric generating system also includes an air motor， a electric generator， a second inverter， a second voltage sampling circuit and a NC switcher. The air motor drives the rotor of the electric generator to rotate， the coils on the stator produces  alternative current， the alternative current is fed to the second inverter， the second inverter converts the alternative current into a three-phase altemative current， the second voltage sampling circuit is used to sample the voltage of electric signal output by the second inverter and then provides the sampled voltage to the controller The controller sends control instruction to the second selector valve in order that the first and the second air vessels supply the compressed air alternatively to the air motor The controller controls amplitude and the phase of the voltage generated by the first and the second inverters according to the sampled voltage signal and the sampled current signal delivered by the first and the second sampling circuits.
Figure 2 is the control flow chart of the air compressed by the wind-power air compression and electric generating system provided by the invention， and the controlling process is as follow：
Step 1： Letting the controller sent a control instruction to the first and the second electromagnetic valves respectively in order not to make the first air vessel supply air to the outside；
Step 2： Detecting the pressure signal delivered from the first pressure sensor；
Step 3： Judging， if the average pressure of the first pressure sensor is lesser than a first given pressure value， execute step 4； or else ， go to execute the step 7；
Step 4： Sending a control instruction to the first selector valve in order that the air compression cylinder charges the first air vessel with air and delaying a period of time T；
Step 5： Detecting the first pressure sensor；
Step 6： Judging， if the pressure of the first pressure sensor is still lesser than the first given pressure value， then return to step 4； or else， go to step 7；
Step 7： Detecting the pressure signal delivered from the second pressure sensor；
Step 8： Judging， if the average pressure of the second pressure sensor is lesser than the first given pressure value， then execute step 9； or else， return to step 2；
Step 9： Sending a control instruction to the first selector valve in order that the air compression cylinder charges the second air vessel with air， and delaying a period of time T；
Step 10： Detecting the pressure signal delivered from the second pressure sensor.
Step 11： Judging， if the pressure of the second pressure sensor is still lesser than the first  given pressure value， return to step 9； or else， return to step 2.
Figure 3 is the control flow chart of the electricity generated by the wind-power air compression and electric generating system provided by the invention， the control process is as follow：
Step l： Let the controller sent a control instruction to the first and the second electromagnetic valves respectively in order not to the first air vessel supply the compressed air to the outside；
Step 2： Detecting the sampled current signal of the grid；
Step 3： Judging， if the average sampled current is greater than the first given current value， execute step 4； or else， go to execute the step 5；
Step 4： Delaying a period of time T；
Step 5： Detecting the sampled current signal of the grid；
Step 6： Judging， if the average sampled current is still greater than the first current given value， return to step 7； or else， go to step 24；
Step 7： Sending a control instruction to the first and the second electromagnetic valves respectively， in order that the first and the second air vessels supply the compressed air to the outside；
Step 8： Detecting the signal delivered from the first pressure sensor；
Step 9： Judging， if the pressure in the first air vessel is greater than the second given pressure value， send a control instruction to the second selector valve in order that the first air vessel supply the compressed air to the air motor through the second selector valve， and the air motor drives the electric generator to produce electric power， the said electric power is converted to three-phase alternative current by the converter according to the control instruction from the controller； if the pressure in the first air vessel is lesser than the second given pressure value， execute the step 13；
Step 10： Detecting the phase of the three-phase alternative current delivered by the first and the second sampling circuit；
Step 11： Judging， if the phase of the sampled signal delivered from the second sampling circuit is equal to that delivered from the first sampling circuit， execute the step 12； or else，  send a control instruction to the second inverter to adjust the phase of the three-phase alternative current output by the second inverter， and then return to step 10；
Step 12： Switching on the NC switch in order that the three-phase alternative current is fed to the grid；
Step 13： Delaying a period of time， and detecting the air pressure inside the first air vessel by the first pressure sensor；
Step 14： Judging， if the air pressure of the first air vessel is lesser than the second given value， then execute the step 15； or else return to step 13；
Step 15： Turning off the NC switcher in order not to connect the second inverter with the grid， and charging the first air vessel with air
Step 16： Detecting the second pressure sensor；
Step 17： Judging， if the pressure in the second air vessel detected by the second pressure sensor is greater than the second given pressure value， send a control instruction to the second selector valve in order that the second air vessel provides the air motor with the compressed air through the second selector valve， the air motor drives the electric generator to produce electric power and the electric power is converted to three-phase alternative current according to the control of the controller， and then execute the step 18； or if the detected pressure is lesser than the second given pressure value， execute the step 21；
Step 18： Detecting the phase of the three-phase voltage delivered from the first and the second sampling circuits.
Step 19： Judging， if the phase detected by the second sampling circuit is equal to the phase detected by the first sampling circuit， execute the step 20； or else， send a control instruction to the second inverter to adjust the phase of the three-phrase voltage output by the second inverter， and then return to step 18.
Step 20： Switching on the NC switcher in order that the three-phrase voltage output by the second inverter is fed to the grid.
Step 21： Delaying a period of time， and detecting the pressure of the second air vessel by the second pressure sensor；
Step 22： Judging， if the pressure of the second air vessel is lesser than the second given pressure value， execute the step 23； or else returning to step 21.
Step 23： Disconnecting the second inverter with the grid by the NC switcher and charging the second air vessel with air
Step 24： Delaying a period of time T；
Step 25： Detecting the sampled current signal by the current sampling circuit.
Step 26： Judging， if the sampled average current is lesser than the second current given current value， then execute step 27； or else， return to step 24.
Step 27： Sending a control signal to the first and the second electromagnetic valves in order that the first and the second air vessels stop supplying the compressed air to the outside， and sending a control instruction to the second selector valve in order to stop， and sending a control instruction to NC switcher in order to be disconnected， and then returning to step 2.
In addition， the high power transformer and low power transformer provided by invention also includes a switching circuit， the switching circuit is powered by AC 220V voltage and provides the controller with +5V， +12V， +24V direct current.
Alternative current produced by the system provided by the invention can be provided to a village， a town and the factories， and can also be used in heating， pumping water or oil， and etc.
The principles of the invention mentioned above have been described in detail with reference to the drawings. However， detailed description is only used for exemplarily illustrating the invention； person skilled in the art will understand that specification is only used for explaining the claims. The scope of protection of the present invention is subject to the claims. Every obvious variation and modification shall be included within the ambit of the present invention and protected by the claims.

Claims (9)

  1. A wind-power air compression and electric generating system， wherein， it includes air compression sub-system and wind-power electric generation sub-system， characterized in that， the air compression sub-system includes circular wheel which is configured with magnets whose N pole and S pole are placed alternatively； the electric generating sub-system includes the stator circle which is set around the circumference of the circular wheel and is configured with several groups of coils； the axis of the windmill is fixed at the center of the circular wheel.
  2. The wind-power air compression and electric generating system according to Claim 1， characterized in that， the circular wheel has convex connecting knob which is connected to the crank of the air cylinder； the crank is connected to the connecting rod of the air cylinder； the connecting rod is connected to the piston of the air cylinder.
  3. The wind-power air compression and electric generating system according to Claim 2， characterized in that， the air cylinder is connected alternatively to a first vessel or a second air vessel through a first selector valve.
  4. The wind-power air compression and electric generating system according to Claim 3， characterized in that， the first air vessel and the second air vessel alternatively supply compressed air to the air motor through a second selector valve.
  5. The wind-power air compression and electric generating system according to Claim 4， characterized in that， it further includes controller， rectifier and a first inverter， the windmill drives the circular wheel rotating； the AC electric power generated from the several group coils is converted to DC electric power by rectifier and the filter； the DC electric power is converted to three-phase AC electric power by the inverter and then is fed to the electric grid.
  6. The wind-power air compression and electric generating system according to Claim 5， characterized in that， it further includes an electric generator and a second inverter ， the air motor drives the rotator of the electric generator， the coils on the rotator generates alternative electric power； the alternative electric power after being rectified， being filtered and being inverted， is fed to the electric grid.
  7. The wind-power air compression and electric generating system according to Claim 6， characterized in that， the controller controls the state of the first selector valve according to  the air pressure of the first air vessel and the second air vessel.
  8. The wind-power air compression and electric generating system according to Claim 7， characterized in that， the outlets of the first air vessel and the second vessel are configured with electromagnetic valves respectively； the controller controls the state of the two electromagnetic valves according to the grid load.
  9. The wind-power air compression and electric generating system according to Claim 7， characterized in that， the controller sends control instruction to the second selector valve to make the first air vessel and the second vessel alternatively supply compressed air to the air motor.
PCT/CN2015/000033 2014-01-20 2015-01-20 Wind-power air compression and electric generating system Ceased WO2015106637A1 (en)

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