CN104539023A - Wind power generation and power supply system based on grid power complementation - Google Patents
Wind power generation and power supply system based on grid power complementation Download PDFInfo
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- CN104539023A CN104539023A CN201510025689.8A CN201510025689A CN104539023A CN 104539023 A CN104539023 A CN 104539023A CN 201510025689 A CN201510025689 A CN 201510025689A CN 104539023 A CN104539023 A CN 104539023A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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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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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Wind Motors (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention provides a wind power generation and power supply system based on grid power complementation. The system is characterized by comprising four parts, wherein the first part comprises four paths for supplying power to an AC load; the second part comprises four paths for supplying power to a DC load; the third part comprises two paths for supplying power to a device power supply bus in a 220V system; and the fourth part comprises a voltage, current, electric quantity, phase position, wind speed, temperature and humidity detection circuit, a system display unit and a remote transmission module. The system provided by the invention organically integrates electric energy output by a fan and electric energy output by a power grid, is used for supplying ceaseless three-phase AC power and high-voltage DC power to various loads and has a man-machine interaction function and a data remote-transmission function.
Description
Technical field
The present invention relates to a kind of wind power generation electric power system complementary based on net electricity, the voltage and current value control wind-powered electricity generation detected according to each several part testing circuit and net TURP change, and are specifically related to detection technique, power electronic technology, embedded Control, data communication field.
Background technology
Along with the continuous deterioration of environmental pollution, the continuous consumption of non-renewable energy resources, the clean energy resource making wind energy such obtains to be paid close attention to widely, mainly utilize wind energy to drive wind-driven generator to rotate and export electric energy, due to randomness and the intermittence of wind energy, blower fan is caused to export the vibration of electric energy amplitude and export the interruption of electric energy.Chinese invention patent application number: 201310297683.7 be called " based on net electricity complementary from net wind power supply system " be form " one drag many " from net electric power system with a typhoon power generator and neighbouring multiple stage load, the unnecessary electricity that blower fan exports utilizes storage battery to store by it, then the direct current in storage battery is carried out inversion, the alternating current that inversion exports is incorporated to main inverter bus.Wind-driven generator in this spline structure needs to have larger power output, and battery pack needs very large capacity equally, and must there be wind the installation region with timer throughout the year.
Current technical development, low-power load can provide uninterrupted power supply by blower fan and Combined storage battery completely, but some powerful devices still will use electrical network to carry out uninterrupted power supply, and do not have now a kind of equipment wind resource can be utilized to power to high power load when wind-force is sufficient, and the net electricity that automatically switches when calm is powered to high power load.For high power load provides the wind power equipment of power supply really to accomplish uninterrupted power supply, just need guarantee system when work, detecting instrument auxiliary in system and control device have always stablizes continual Power supply.
Summary of the invention
The present invention seeks to the deficiency overcoming prior art existence, a kind of wind power generation electric power system complementary based on net electricity is proposed, the electric energy that blower fan exports by it and the electric energy that electrical network exports organically combine, embedded system is utilized automatically to regulate diverter switch, for multiple load provides continual three-phase alternating-current supply and adjustable high-voltage DC power supply, there is human-computer interaction function and data remote function.
The object of the invention is to be realized by following technical scheme: a kind of wind power generation electric power system complementary based on net electricity, is characterized in that, it comprises four parts compositions, and Part I comprises four for AC load provides the path of power supply; Part II comprises four for DC load provides the path of power supply; Part III comprises two for device power source bus in 220V system provides the path of power supply; Part IV comprises voltage, electric current, electricity, phase place, wind speed, temperature and humidity measure circuit, system display unit and remote-transmission module;
The Article 1 path of described Part I comprises: wind-driven generator, controller of fan, the first diverter switch, the first inversion unit, the second diverter switch be electrically connected with AC load formed from net blower fan supply power mode; The supply power mode that the Article 2 path of described Part I comprises wind-driven generator, controller of fan, the 3rd diverter switch, the first batteries, the second batteries, the first diverter switch, the first inversion unit, the second diverter switch are electrically connected the batteries formed with AC load; The Article 3 path of described Part I comprises single phase alternating current power supply, the first rectifier, the first diverter switch, the first inversion unit, the second diverter switch are electrically connected the single phase alternating current power supply formed supply power mode with AC load; The Article 4 path of described Part I comprises three-phase alternating-current supply, the second diverter switch and is electrically connected the three-phase alternating-current supply supply power mode formed with AC load;
The Article 1 path of described Part II comprises: wind-driven generator, controller of fan, the 3rd diverter switch, the first batteries, the second batteries, DC voltage booster circuit, the 4th diverter switch are electrically connected the batteries supply power mode formed with DC load; The Article 2 path of described Part II comprises: wind-driven generator, controller of fan, the 3rd diverter switch, the first batteries, the second batteries, direct-current voltage reducing circuit, the 4th diverter switch are electrically connected the batteries supply power mode formed with DC load; The Article 3 path of described Part II comprises: single phase alternating current power supply, the first rectifier, the 4th diverter switch are electrically connected the single phase alternating current power supply supply power mode formed with DC load; The Article 4 path of described Part II comprises three-phase alternating-current supply, the second rectifier, the 4th diverter switch are electrically connected the three-phase alternating-current supply supply power mode formed with DC load;
In the Article 1 220V system of described Part III, device power source bus power source path comprises: wind-driven generator, controller of fan, the 3rd diverter switch, the first batteries, the second batteries, the second inversion unit are electrically connected with the 5th diverter switch; In the Article 2 220V system of described Part III, device power source bus power source path comprises: single phase alternating current power supply is electrically connected with the 5th diverter switch;
Described Part IV comprises: testing circuit in detecting voltage by three phase circuit, three-phase current detection circuit, three-phase phase testing circuit, direct voltage testing circuit, D.C. current detecting circuit, single-phase voltage testing circuit, wind speed measurement circuit, Temperature and Humidity circuit, system display unit, remote-transmission module and controller of fan; Wherein in controller of fan, testing circuit comprises blower fan output voltage detecting circuit, blower fan output current detection circuit and battery power detection circuit, and described battery power detection circuit is used for the detection of electricity in the first batteries, the second batteries; The detection that described detecting voltage by three phase circuit exports for the voltage magnitude of each phase of three-phase alternating current; Three-phase current detection circuit is used for the detection of the current value of each phase between three-phase alternating current with AC load; Three-phase phase testing circuit is used for the detection of the phase difference of three-phase alternating current; Direct voltage testing circuit detects for the supply power voltage of DC load; D.C. current detecting circuit is used for the current detecting in DC load loop; The voltage magnitude that single-phase voltage testing circuit is used for the single-phase alternating current that the second inversion unit exports detects; Wind speed measurement circuit is used for the detection of ambient wind velocity; Temperature and Humidity circuit is used for ambient temperature and Humidity Detection; System display unit communicates with computer control unit, the testing circuit parameter that display Part IV comprises; Remote-transmission module communicates with computer control unit, and the testing circuit parameter teletransmission comprised by Part IV is to active station.
Described wind-driven generator is magnetic suspending wind turbine generator.
Described controller of fan comprises rectified three-phase circuit, booster circuit, MPPT maximum power point tracking control circuit, blower fan output voltage detecting circuit, blower fan output current detection circuit, blower fan brake control circuit are electrically connected with battery power detection circuit; Described MPPT maximum power point tracking control circuit, blower fan output voltage detecting circuit, blower fan output current detection circuit, battery power detection circuit, blower fan brake control circuit are all electrically connected with computer control unit by computer control unit conversion terminal.
Described computer control unit is DSP.
First, second inversion unit described is the SPWM of Bipolar control mode.
Described system display unit is touch-screen.
Described remote-transmission module is 3G-DUT.
The effect of the wind power generation electric power system complementary based on net electricity of the present invention is embodied in:
1, the three-phase alternating current that wind-driven generator exports by controller of fan carries out rectification and boosting process, then by rectification and boosting process after direct current through MPPT maximum power point tracking control circuit to battery charging, monitor the charge condition of two group storage batteries simultaneously, the voltage and current size of the three-phase alternating current that monitoring blower fan exports, when computer control unit exports controller of fan brake instruction, hypervelocity brake is carried out to blower fan and controls;
2, the 3rd diverter switch switches charging to the first batteries and the second batteries, and the 3rd diverter switch exports the direct current not having charging accumulator group simultaneously, and the direct current of output connects DC bus;
3, AC load comprises four kinds of supply power modes, carries out switching use according to concrete service condition, and when wind-force is sufficient, wind-driven generator is exported three-phase alternating current through over commutation, then carry out three-phase inversion, inversion exports and connects AC load; When wind-force reduces or is calm, by the direct current that is stored in batteries through three-phase inversion, inversion exports and connects AC load; When use region be in for a long time wind-force very little or calm time, by single phase alternating current power supply rectification, then carry out three-phase inversion, inversion export connect AC load; When use region be in for a long time wind-force very little or calm time, and the power of load is very large, when the upper level maximum power of single-phase alternating current can not meet load instructions for use, three-phase alternating current is directly exported connection AC load;
4, DC load comprises four kinds of supply power modes, carry out switching according to concrete service condition to use, when direct voltage height than DC bus of the working power of DC load, the PWM utilizing computer control unit to export the direct current of DC bus adjusts DC voltage booster circuit and carries out boosting process, meets the requirement of DC load working power; When the working power of DC load is forced down than the direct current of DC bus, the PWM utilizing computer control unit to export the direct current of DC bus adjusts direct-current voltage reducing circuit and carries out step-down process, meets the requirement of DC load working power; When DC bus is after boosting and step-down process, when the direct-current working volts that can not meet DC load or the power instructions for use that can not meet DC load, by single phase alternating current power supply rectification, rectification connects DC load, for DC load provides power supply after exporting; When the direct current provided after single phase alternating current (A.C.) electric rectification can not meet the power instructions for use of DC load, by three-phase alternating current electric rectification, rectification connects DC load, for DC load provides power supply after exporting;
5, in 220V system, device power source bus power supply comprises two kinds of supply power modes, carry out switching according to concrete service condition to use, when the electricity in batteries meet setting require time, by the direct current single-phase inversion that DC bus exports, device power source bus in the single phase alternating current (A.C.) electrical connection 220V system that inversion exports; When the electricity in batteries do not meet setting require time, single phase alternating current power supply is connected device power source bus in 220V system through the 5th diverter switch, ensures the continuous operation of all detecting elements and control element, for the stable operation of system provides guarantee;
6, MPPT maximum power point tracking function, computer control unit controls MPPT maximum power point tracking circuit, ensures that blower fan charges to the first batteries, the second batteries with maximum power stage;
7, the display unit of the system signal that can detect in display system, and can control system, under system is the state automatically controlled, provide the work of basis for estimation to system power supply to control according to detection signal; When under the state that system is Non-follow control, can Non-follow control diverter switch, adjustment inversion unit export, regulate DC boosting value, regulate DC decompression value on system display unit, regulate the output of MPPT maximum power point tracking circuit.
Accompanying drawing explanation
Fig. 1 is the schematic block circuit diagram based on the complementary wind power generation electric power system of net electricity;
Fig. 2 is the internal circuit principle schematic of controller of fan 2;
Fig. 3 is the principle schematic of diverter switch 3;
Fig. 4 is the principle schematic of diverter switch 5;
Fig. 5 is the principle schematic of diverter switch 7;
Fig. 6 is the principle schematic of diverter switch 19;
Fig. 7 is the principle schematic of diverter switch 20;
Fig. 8 is blower fan brake built-in switch principle schematic.
In figure: 1 wind-driven generator, 2 controller of fan, 3 first diverter switches, 4 first inversion units, 5 second diverter switches, 6 AC load, 7 the 3rd diverter switches, 8 first batteries, 9 second batteries, 10 first rectifiers, 11 single phase alternating current power supplies, 12 three-phase alternating-current supplies, 13 second rectifiers, device power source bus in 14 220V systems, 15 DC buss, 16 DC voltage booster circuit, 17 direct-current voltage reducing circuits, 18 second inversion units, 19 the 5th diverter switches, 20 the 4th diverter switches, 21 single-phase voltage testing circuits, 22 computer control units, 23 system display units, 24 remote-transmission modules, 25 DC load, 26 detecting voltage by three phase circuit, 27 three-phase current detection circuits, 28 three-phase phase testing circuits, 29 direct voltage testing circuits, 30 D.C. current detecting circuits, 31 wind speed measurement circuit, 32 Temperature and Humidity circuit, 33 computer control unit conversion terminals, 34 heat radiation bakers, 2-1 rectified three-phase circuit, 2-2 booster circuit, 2-3 MPPT maximum power point tracking control circuit, 2-4 blower fan output voltage detecting circuit, 2-5 blower fan output current detection circuit, 2-6 blower fan brake control circuit, 2-7 battery power detection circuit.
Embodiment
For making object of the present invention, technical scheme and effect clearly, below in conjunction with the accompanying drawing in embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creation work prerequisite, belong to the scope of protection of the invention.
With reference to Fig. 1-Fig. 5, the wind power generation electric power system complementary based on net electricity of the present invention, the three-phase alternating current connecting fan controller 2 that wind-driven generator 1 exports, controller of fan 2 pairs of blower fans export three-phase alternating current electric rectification, direct current after rectification is connected MPPT maximum power point tracking circuit 2-3, the direct current positive pole exported through MPPT maximum power point tracking circuit 2-3 connects 1 pin of the first diverter switch 3, the direct current negative pole exported connects 2 pin of the first diverter switch 3, first diverter switch 5, 6 pin connect electrode input end and the negative input of the first inversion unit 4 respectively, the three-phase alternating current A that first inversion unit 4 exports, B, C connects 1 of the second diverter switch 5 respectively, 2, 3 pin, 7 of second diverter switch 5, 8, 9 pin export the A of three-phase alternating current respectively, B, C, the three-phase alternating current A exported, B, C connects the three-phase input end of AC load 6 respectively.The three-phase alternating current connecting fan controller 2 that wind-driven generator 1 exports, blower fan output voltage detecting circuit 2-4 and blower fan output current detection circuit 2-5 is had in controller of fan 2, the feedback loop that the magnitude of voltage detected and current value control as MPPT maximum power point tracking, blower fan is exported three-phase alternating current and carries out rectification by rectified three-phase circuit 2-1, direct current after rectification is through booster circuit 2-2, MPPT maximum power point tracking control circuit 2-3, with maximum power output, the first batteries 8 and the second batteries 9 are charged, there are detection first batteries 8 and the second batteries 9 battery power detection circuit 2-7 in controller of fan 2 simultaneously, control the 3rd diverter switch 7 according to detection charge condition computer control unit 22 and switch charging, controller of fan 2 exports 1 pin that direct current positive pole connects the 3rd diverter switch 7, export 2 pin that direct current negative pole connects the 3rd diverter switch 7, first batteries 8 positive pole connects 5 pin of the 3rd diverter switch 7, second batteries 9 positive pole connects 6 pin of the 3rd diverter switch 7, DC bus 15 positive pole connects 3 pin of the 3rd diverter switch 7, DC bus 15 negative pole connects 4 pin of the 3rd diverter switch 7, when the direct current that controller of fan 2 exports charges to batteries, after the 3rd diverter switch 7, can only charge to a wherein group storage battery, another group storage battery discharges to DC bus 15, positive pole and the negative pole of DC bus 15 are connected 3 pin and 4 pin of the first diverter switch 3 respectively.Single phase alternating current power supply 11 is through the first rectifier 10, and the direct current positive pole after rectification and negative pole are connected 8 pin and 7 pin of the first diverter switch 3 respectively.A, B, C of three-phase alternating-current supply 12 connect 4,5,6 pin of the second diverter switch 5 respectively.
With reference to Fig. 1, Fig. 7, DC bus 15 connects DC voltage booster circuit 16, direct-current voltage reducing circuit 17, DC voltage booster circuit 16 and direct-current voltage reducing circuit 17 export PWM control batteries by computer control unit 22 and carry out the boosting of BOOST direct current and the step-down of BUCK direct current, DC voltage booster circuit 16 is exported 1 pin and 2 pin that galvanic positive pole and negative pole are connected the 4th diverter switch 20 respectively, direct-current voltage reducing circuit 17 exports 3 pin and 4 pin that galvanic positive pole and negative pole are connected the 4th diverter switch 20 respectively, first rectifier 10 exports 7 pin and 8 pin that galvanic positive pole and negative pole are connected the 4th diverter switch 20 respectively, second rectifier 13 exports 9 pin and 10 pin that galvanic positive pole and negative pole are connected the 4th diverter switch 20 respectively, positive pole and the negative pole of DC load 25 are connected 5 pin and 6 pin of the 4th diverter switch 20 respectively.
With reference to Fig. 1, Fig. 6, DC bus 15 positive pole and negative pole are connected electrode input end and the negative input of the second inversion unit 18 respectively, after the second inversion unit 18 single-phase inversion, output 220V alternating current fire wire L and zero line N are connected 2 pin and 4 pin of the 5th diverter switch 19 respectively, single phase alternating current power supply 11 live wire L and zero line N are connected 1 pin and 3 pin of the 5th diverter switch 19 respectively, and in 220V system, live wire L and the zero line N of device power source bus 14 is connected 5 pin and 6 pin of the 5th diverter switch 19 respectively.
Detecting voltage by three phase circuit 26 is measurement threephase potential transformer, the three-phase alternating voltage amplitude size exported is detected according to detecting voltage by three phase circuit 26, the unit 22 that computerizeds control controls the second diverter switch, switch the three-phase alternating current of use first inversion unit 4 output and the three-phase alternating-current supply 12 of electrical network output, simultaneous computer control unit 22 detects three-phase alternating voltage amplitude size adjustment control first inversion unit 4 exported SPWM according to detecting voltage by three phase circuit 26 exports, thus the three-phase inversion voltage magnitude that adjustment first inversion unit 4 exports, three-phase current detection circuit 27 is measurement threephase current transformer, three-phase current detection circuit 27 detects the electric current in the three-phase alternating current loop exported, protecting control is carried out in the threshold value computer-chronograph control unit 22 pairs of loads exceeding setting when electric current, three-phase phase testing circuit 28 is phase tester, computer control unit 22 exports phase place adjustment control first inversion unit 4 of three-phase alternating current SPWM according to detection second diverter switch exports, ensure the carrier phase shift 120 ° of the three-phase alternating current exported.
Direct voltage testing circuit 29 is that band 0-5V becomes the D.C. voltmeter sent, computer control unit 22 exports galvanic magnitude of voltage adjustment DC voltage booster circuit 16 according to the 4th diverter switch 20, the PWM of direct-current voltage reducing circuit 17 exports, D.C. current detecting circuit 30 is that band 0-5V becomes the DC ammeter sent, computer control unit 22 detects the electric current in DC loop, when controller computer-chronograph control unit 22 controls the 20 pairs of DC load protections of the 4th diverter switch, the magnitude of voltage detect direct voltage testing circuit 29 and D.C. current detecting circuit 30 and current value are calculated by calculation control unit, ask the effective power size in DC load loop, the watt level that computer control unit 22 needs according to loaded work piece controls the 4th diverter switch 20, switch DC voltage booster circuit 16, direct-current voltage reducing circuit 17, first rectifier 10, second rectifier 13 exports.
Wind speed measurement circuit 31 is that band 0-5V becomes the air velocity transducer sent, computer control unit 22 calculates the wind speed size of wind-driven generator 1 operational environment, Temperature and Humidity circuit 32 is the transducer that band 0-5V becomes the temperature and humidity one sent, the temperature and humidity of computer control unit 22 computing system operational environment, temperature and humidity environmentally starts heat radiation baker, the safe and stable operation of safeguards system.
Computer control unit 22 and system display unit 23 adopt the mode of RS-232 to communicate, by Part IV collection signal and control signal configuration on system display unit, computer control unit 22 and remote-transmission module 24 adopt the mode of RS-485 to communicate, by the active station that Part IV collection signal and control signal teletransmission are monitored to needs.
Single-phase voltage testing circuit 21 is single-phase AC voltage instrument transformer, computer control unit 22 exports according to the SPWM of voltage magnitude regulating and controlling second inversion unit of detection second inversion unit 18 output AC electricity, controls the 5th diverter switch 19 simultaneously and switches output second inversion unit 18 and single phase alternating current power supply 11.
With reference to Fig. 2, in controller of fan 2, rectified three-phase circuit 2-1 is the uncontrollable rectifier of three phase full bridge, blower fan output voltage detecting circuit 2-4 is measurement threephase potential transformer, blower fan output current detection circuit 2-5 is measurement threephase current transformer, and battery power detection circuit 2-7 is that voltmeter is sent in the change of direct current band.
With reference to Fig. 2, blower fan brake control circuit 2-6, maximum current is followed the trail of by resistance circumfluence method, if the rated power of blower fan is W, if the rated voltage of blower fan is U, first calculated the output-current rating of blower fan by W/U, the ratio rated current that general hypervelocity electric current will be arranged is higher a little, and the electric current in the middle of tracking backflow exceedes or arrives the limiting value set is to carry out the function of brake.
With reference to Fig. 8, KA1, KA2, KA3 is high-power magnetic relay, the three-phase alternating current A that wind-driven generator 1 exports, B, C connects KA1 respectively, KA2, the normally-closed contact input of KA3, KA1, KA2, the normally-closed contact output of KA3 connects rectified three-phase circuit, KA1, KA2, the normally opened contact of KA3 links together, KA1, KA2, KA3 control end connects computer control unit conversion terminal 33, computer control unit 22 control KA1, KA2, KA3, the implementation method of blower fan brake function: when wind speed is too high make wind-driven generator 1 rotating speed exceed preset brake rotating speed time, computer control unit 22 increases the duty ratio of pwm signal in Boost circuit gradually, wind-driven generator 1 electric current is increased, thus increase wind-driven generator 1 resistance, wind-driven generator 1 rotating speed is slowly declined, when wind-driven generator 1 rotating speed declines enough low, KA1, KA2, the charged adhesive of KA3, makes wind-driven generator 1 three-phase shortcircuit, and at this moment the electric current of motor coil increases, the electromagnetic resistivity that then motor coil produces increases, the power that the reverse electromagnetic resistivity of coil and wind-driven generator 1 rotate offsets, and wind-driven generator 1 rotary speed is declined, reaches brake object.
Described wind-driven generator 1 is magnetic suspending wind turbine generator; Described computer control unit 22 is digital signal processor, i.e. DSP; Described first diverter switch 3 comprises three two and opens two and close high-power magnetic relay; Described second diverter switch 5 comprises two two and opens two and close high-power magnetic relay; Described 3rd diverter switch 7 comprises one two and opens two and close high-power magnetic relay, one bar of high-power connection wire; Described first inversion unit 4 is three-phase inverting circuit; The principle of described three-phase inverting circuit is the SPWM of Bipolar control mode; Described AC load 6 is three-phase alternating current load; Described first batteries 8, second batteries 9 comprises multiple storage battery series and parallel connections; The 220V alternating current that described single phase alternating current power supply 11 exports for electrical network; Described rectifier 10 is the uncontrollable rectifier of single-phase full bridge; The 380V alternating current that described three-phase alternating-current supply 12 exports for electrical network; Described rectifier 13 is the uncontrollable rectifier of three phase full bridge; Described DC voltage booster circuit 16 is BOOST booster circuit; Described direct-current voltage reducing circuit 17 is BUCK reduction voltage circuit; Described 4th diverter switch 20 comprises four two and opens two and close high-power magnetic relay; Described DC load 25 comprises electric traction, excavation machinery, needs the load that regulates direct voltage amplitude to use; Described second inversion unit 18 is single-phase inversion circuit; The principle of described single-phase inversion circuit is the SPWM of Bipolar control mode; Described 5th diverter switch 19 comprises one two and opens two and close high-power magnetic relay; Described system display unit is touch-screen; Described remote-transmission module is 3G-DUT.
Claims (7)
1. based on the wind power generation electric power system that net electricity is complementary, it is characterized in that, it comprises four parts compositions, and Part I comprises four for AC load provides the path of power supply; Part II comprises four for DC load provides the path of power supply; Part III comprises two for device power source bus in 220V system provides the path of power supply; Part IV comprises voltage, electric current, electricity, phase place, wind speed, temperature and humidity measure circuit, system display unit and remote-transmission module;
The Article 1 path of described Part I comprises: wind-driven generator, controller of fan, the first diverter switch, the first inversion unit, the second diverter switch be electrically connected with AC load formed from net blower fan supply power mode; The supply power mode that the Article 2 path of described Part I comprises wind-driven generator, controller of fan, the 3rd diverter switch, the first batteries, the second batteries, the first diverter switch, the first inversion unit, the second diverter switch are electrically connected the batteries formed with AC load; The Article 3 path of described Part I comprises single phase alternating current power supply, the first rectifier, the first diverter switch, the first inversion unit, the second diverter switch are electrically connected the single phase alternating current power supply formed supply power mode with AC load; The Article 4 path of described Part I comprises three-phase alternating-current supply, the second diverter switch and is electrically connected the three-phase alternating-current supply supply power mode formed with AC load;
The Article 1 path of described Part II comprises: wind-driven generator, controller of fan, the 3rd diverter switch, the first batteries, the second batteries, DC voltage booster circuit, the 4th diverter switch are electrically connected the batteries supply power mode formed with DC load; The Article 2 path of described Part II comprises: wind-driven generator, controller of fan, the 3rd diverter switch, the first batteries, the second batteries, direct-current voltage reducing circuit, the 4th diverter switch are electrically connected the batteries supply power mode formed with DC load; The Article 3 path of described Part II comprises: single phase alternating current power supply, the first rectifier, the 4th diverter switch are electrically connected the single phase alternating current power supply supply power mode formed with DC load; The Article 4 path of described Part II comprises three-phase alternating-current supply, the second rectifier, the 4th diverter switch are electrically connected the three-phase alternating-current supply supply power mode formed with DC load;
In the Article 1 220V system of described Part III, device power source bus power source path comprises: wind-driven generator, controller of fan, the 3rd diverter switch, the first batteries, the second batteries, the second inversion unit are electrically connected with the 5th diverter switch; In the Article 2 220V system of described Part III, device power source bus power source path comprises: single phase alternating current power supply is electrically connected with the 5th diverter switch;
Described Part IV comprises: testing circuit in detecting voltage by three phase circuit, three-phase current detection circuit, three-phase phase testing circuit, direct voltage testing circuit, D.C. current detecting circuit, single-phase voltage testing circuit, wind speed measurement circuit, Temperature and Humidity circuit, system display unit, remote-transmission module and controller of fan; Wherein in controller of fan, testing circuit comprises blower fan output voltage detecting circuit, blower fan output current detection circuit and battery power detection circuit, and described battery power detection circuit is used for the detection of electricity in the first batteries, the second batteries; The detection that described detecting voltage by three phase circuit exports for the voltage magnitude of each phase of three-phase alternating current; Three-phase current detection circuit is used for the detection of the current value of each phase between three-phase alternating current with AC load; Three-phase phase testing circuit is used for the detection of the phase difference of three-phase alternating current; Direct voltage testing circuit detects for the supply power voltage of DC load; D.C. current detecting circuit is used for the current detecting in DC load loop; The voltage magnitude that single-phase voltage testing circuit is used for the single-phase alternating current that the second inversion unit exports detects; Wind speed measurement circuit is used for the detection of ambient wind velocity; Temperature and Humidity circuit is used for ambient temperature and Humidity Detection; System display unit communicates with computer control unit, the testing circuit parameter that display Part IV comprises; Remote-transmission module communicates with computer control unit, and the testing circuit parameter teletransmission comprised by Part IV is to active station.
2. the wind power generation electric power system complementary based on net electricity according to claim 1, it is characterized in that, described wind-driven generator is magnetic suspending wind turbine generator.
3. the wind power generation electric power system complementary based on net electricity according to claim 1, it is characterized in that, described controller of fan comprises rectified three-phase circuit, booster circuit, MPPT maximum power point tracking control circuit, blower fan output voltage detecting circuit, blower fan output current detection circuit, blower fan brake control circuit be electrically connected with battery power detection circuit; Described MPPT maximum power point tracking control circuit, blower fan output voltage detecting circuit, blower fan output current detection circuit, battery power detection circuit, blower fan brake control circuit are all electrically connected with computer control unit by computer control unit conversion terminal.
4. the wind power generation electric power system complementary based on net electricity according to claim 1, it is characterized in that, described computer control unit is DSP.
5. the wind power generation electric power system complementary based on net electricity according to claim 1, it is characterized in that, first, second inversion unit described is the SPWM of Bipolar control mode.
6. the wind power generation electric power system complementary based on net electricity according to claim 1, it is characterized in that, described system display unit is touch-screen.
7. the wind power generation electric power system complementary based on net electricity according to claim 1, it is characterized in that, described remote-transmission module is 3G-DUT.
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