CN102097814A - Grid-connected inverter system for wind power generation - Google Patents
Grid-connected inverter system for wind power generation Download PDFInfo
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- CN102097814A CN102097814A CN2009102137811A CN200910213781A CN102097814A CN 102097814 A CN102097814 A CN 102097814A CN 2009102137811 A CN2009102137811 A CN 2009102137811A CN 200910213781 A CN200910213781 A CN 200910213781A CN 102097814 A CN102097814 A CN 102097814A
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The invention discloses a grid-connected inverter system for wind power generation, and relates to grid-connected inverter equipment on a wind driven generator system. The grid-connected inverter system comprises direct-current input equipment, an inverter circuit, a microprocessor, a keyboard input circuit and a display circuit, wherein wind energy is converted into alternating current with variable amplitude and frequency through a wind driven generator, and the converted alternating current is converted into direct current through a controller; the inverter circuit converts the direct current into sine wave current with the same frequency and the same phase as a power grid, and feeds the power into the power grid; the microprocessor receives sampling signals of a direct current input voltage, synchronous signals of a power grid voltage and alternating current output voltage signals of the inverter circuit; the inverter circuit is driven to work through a driving circuit; and the keyboard input circuit and the display circuit are used for inputting and displaying information in the microprocessor. The grid-connected inverter system solves the problems that the conventional grid-connected inverter system for wind power generation has poor power grid tracking synchronism and the inverter cannot be quickly locked when the power grid is interrupted or the power in the power grid is over high or over low.
Description
Technical field
The present invention relates to the parallel network reverse equipment on the wind powered generator system.
Background technology
Wind generator system roughly is divided into two big classes both at home and abroad at present: a class is the wind generator system based on the independent operating of middle low power blower fan.Be mainly used in non-Electric region resident daily life electricity consumption.This system and electrical network are unconnected, independent operating.This type of type is from net type wind turbine generator.
Another kind of then is to be main type with big merit wind turbine generator, and the separate unit wind-driven generator produces electric energy alone, by grid-connection device electric energy is connected to the grid then, provides electric power to electrical network, is powered to the user by electrical network again.This type of type is the grid type wind turbine generator.
At present both at home and abroad the citation form that is connected to the grid of wind power generator incorporated in power network is that separate unit independently is connected to the grid by separately grid-connection device respectively according to circumstances.Existing combining inverter exists the tracking synchronized poor; When electrical network occur to interrupt, when too high or too low, inverter is shortcoming such as lock machine rapidly.
Summary of the invention
The purpose of this invention is to provide a kind of wind power-generating grid-connected inversion system that is used for, the tracking synchronized that the invention solves existing wind power-generating grid-connected inversion system existence is poor; When electrical network occur to interrupt, when too high or too low, inverter is problem such as lock machine rapidly.
Wind power-generating grid-connected inversion system of the present invention comprises:
The direct current input equipment, wind energy is converted into the alternating current of amplitude and frequency change by wind-driven generator, and the alternating current of conversion is transformed to direct current by controller;
Inverter circuit is converted into direct current energy and electrical network same frequency, synchronous sine-wave current, and with this electric power feed-in electrical network;
Microprocessor, the sampled signal of reception DC input voitage, the synchronizing signal of line voltage, and the ac output voltage signal of inverter circuit; Drive inverter circuit work by drive circuit;
Keyboard input circuit and display circuit are used for input and show microprocessor information.
Present combining inverter effect is that grid-connected photovoltaic system is made up of solar module, combining inverter, metering device and distribution system.Solar energy is converted into direct current power by solar module, by combining inverter direct current energy is converted into and electrical network same frequency, synchronous sine-wave current again, and with this electric power feed-in electrical network, photovoltaic combining inverter is the key equipment in the solar power system.
Wind power-generating grid-connected inversion system of the present invention is made up of blower fan, controller, combining inverter and distribution system.Wind energy is converted into the alternating current of amplitude and frequency change by wind-driven generator, and the alternating current of conversion is transformed to direct current by controller.By the grid type inverter direct current energy is converted into not electrical network same frequency, synchronous sine-wave current, feed-in electrical network again.As seen combining inverter is the key equipment in the wind generator system.Wind power-generating grid-connected inversion system characteristic of the present invention:
1, the inverter output of being incorporated into the power networks is followed the tracks of electrical network and reached Millisecond, and is synchronous fully with electrical network.
2, the inverter detection of grid in three seconds electrical network just often, inverter just begins the work of being incorporated into the power networks.Guaranteed that inverter can not damage because of the electrical network frequent fluctuation.
Occur to interrupt when electrical network when 3, inverter is incorporated into the power networks work, or too high, cross when low, inverter can be in≤10ms lock machine automatically.
4, possesses output short-circuit, defencive functions such as overload.
5, power output is constant.(dc voltage just often).
6, when wind power generation wind-force deficiency, or photovoltaic power generation solar is in particular in that dc voltage descends when not enough, and combining inverter can reduce power output thereupon.When DC is low excessively when reaching inverter DC protection point, inverter can quit work by automatic lock machine, and when DC recovered, inverter was started working again automatically, the output of being incorporated into the power networks.
7, when wind power generation wind-force excessive (as typhoon), or photovoltaic generation solar irradiation intensity is when excessive, and when being in particular in the DC overvoltage, inverter is the protection lock machine automatically.When DC recovers just often, the inverter output of being incorporated into the power networks of resuming work automatically again.
Description of drawings
Fig. 1 is a way circuit schematic diagram of the present invention;
Fig. 2 is the circuit diagram of cpu control circuit;
Fig. 3 is the circuit diagram of PWM modulation circuit;
Fig. 4 is the circuit diagram of power-supplying circuit;
Fig. 5 is the circuit diagram of over current protection circuit;
Fig. 6 is the circuit diagram of output detection circuit;
Fig. 7 is the connection block diagram of inverter circuit.
Embodiment
Below in conjunction with accompanying drawing and with best execution mode the present invention is done detailed explanation:
Consult Fig. 1, comprising:
The direct current input equipment, wind energy is converted into the alternating current of amplitude and frequency change by wind-driven generator, and the alternating current of conversion is transformed to direct current by controller;
Inverter circuit is converted into direct current energy and electrical network same frequency, synchronous sine-wave current, and with this electric power feed-in electrical network;
Microprocessor, the sampled signal of reception DC input voitage, the synchronizing signal of line voltage, and the ac output voltage signal of inverter circuit; Drive inverter circuit work by drive circuit;
Keyboard input circuit and display circuit are used for input and show microprocessor information.
Consult Fig. 7, described inverter circuit comprises: cpu control circuit, power-supplying circuit, PWM modulation circuit, current foldback circuit, output detection circuit; Cpu control circuit is joining power power supply circuits, PWM modulation circuit, current foldback circuit, output detection circuit respectively; Current foldback circuit connects the PW modulation circuit; Power-supplying circuit connects output detection circuit.
Consult Fig. 2, cpu control circuit comprises:
Controller J1;
Controller J2, the pin 5 connection electrical resistance R79 of controller J2; An other end of resistance R 79 connects capacitor C22 and resistance R 78, the other end ground connection of resistor C22, and an other end of resistance R 78 connects OAD AD;
Controller J3, the pin one connection+BAT of controller J3, the pin two of controller J3 connects the positive pole of capacitor C45, capacitor C35, and the end of capacitor C23; The positive pole of capacitor C45, capacitor C35, and the other end ground connection of capacitor C23; Pin 5,6,7,8 ground connection of controller J3;
The pin one ground connection of controller J4, the pin two of controller J4,3,4 is the end of connection electrical resistance R86, R85, R84 respectively, and the other end of resistance R 86, R85, R84 connects LCD0, LCD1, LCD2; The pin 5 connection+5V power supplys of controller J4; The pin 6 and 7 of controller J4 connects POWER and switch respectively;
Controller J5, the pin one ground connection of controller J5; Controller is at the pin two connection electrical resistance R17 of J5 and an end of resistance R 40, and an other end of resistance R 17 connects the base stage of triode Q1, an other end connection+5V power supply of the collector electrode of triode Q1 and resistance R 40; The end of the emitter connection electrical resistance R39 of triode Q1, an other end of resistance R 39 connects LCD2;
Microcontroller U14, the pin one connection electrical resistance R67 of microcontroller U14 and the end of capacitor C2, capacitor C 2 other end ground connection, an other end connection+5V power supply of resistance R 67; The pin two of microcontroller U14 connects an end of positive pole, resistance R 2, R87 and the capacitor C 51 of triode D100; An other end ground connection of capacitor C 51 and resistance R 2; The other one termination+BAT of resistance R 87, the minus earth of triode D100; Pin 6 coupled in series resistance R 77 and the buzzer BUZ1 of microcontroller U14; Pin 8 ground connection of microcontroller U14; The pin 9 of microcontroller U14 connects crystal oscillator Z2 and capacitor C 49, capacitor C 49 other end ground connection; The pin one 1 of microcontroller U14 connects other end of crystal oscillator Z2 and capacitor C 50, capacitor C 50 other end ground connection; One end of pin one 7 connection electrical resistance R4, resistance R 1 and the resistance R 3 of microcontroller U14, resistance R 4 other end ground connection, a resistance R! An other end connect the pin two of controller J6, pin 3 ground connection of controller J6, the other end of the pin one connection electrical resistance R3 of controller J6 and the pin one 8 of microcontroller U14; The pin one 9 of microcontroller U14 connects an end and the ground connection of capacitor C 29, the pin two 0 of microcontroller U14 connect capacitor C 29 other ends and+the 5V power supply; The end of the pin two 6 connection electrical resistance R31 of microcontroller U14; Microcontroller U14 pin two 8 is connected to the pin one of output detection circuit resistance R 88; The pin two 7 of microcontroller U14 is connected to the pin one of output detection circuit resistance R 93; The pin 4 of microcontroller U14 is connected to the pin one of power-supplying circuit resistance R 4; The pin one 3 of microcontroller U14 is connected to the pin one of current foldback circuit R111; The pin 3 of microcontroller U14 is connected to the pin two of current foldback circuit R11; The pin one 1 of microcontroller U14 is connected to the pin 5 of PWM modulation circuit U12; The pin two 2 of microcontroller U14 is connected to the pin 9 of PWM modulation circuit U12;
The pin one of J2-5 is connected to the pin one-5 of power-supplying circuit J5; The pin one of J1-6 is connected to the pin one-6 of power-supplying circuit J6; The pin one of J3-8 is connected to the pin one-8 of power-supplying circuit J7; The pin 6 of J1 is connected to the pin one of power-supplying circuit resistance R 11; The pin 5 of J1 is connected to the pin two of power-supplying circuit resistance R 38.
Consult Fig. 3, the PWM modulation circuit comprises:
Microprocessor U1, the pin two of little processing 1 connects the positive pole of capacitor C 10, and the negative pole of capacitor C 10 connects the negative pole of microcontroller U1; The pin 3 of microprocessor U1 connects the negative pole of capacitor C 1 and the positive pole of capacitor C 9, the positive pole of capacitor C 1 connects an end of pin 8, diode D24 negative pole and the capacitor C 20 of microprocessor U1, the anodal connection electrical resistance R13 of diode D24, other one termination of resistance R 13+12V power supply; The negative pole of capacitor C 9 connects pin 5, the negative pole of diode D26 and the other end of capacitor C 20 of microprocessor U1, the plus earth of diode D26;
Microprocessor U7, the pin one of microprocessor U7 connect capacitor C 11 and+the 12V power supply, the pin 4 connection-10V power supplys of microprocessor U7, the pin 5 connection electrical resistance R8 of microprocessor U7, an other end of resistance 8 connects the base stage of collector electrode, triode Q9 and the Q3 of triode Q2, the base stage coupled in series resistance R 6 of triode Q2, triode Q2 emitter connection-10V power supply, the emitter of triode Q9 and Q3 connects VLOA, collector electrode connection+12V the power supply of triode Q3 and capacitor C 24, the collector electrode of triode Q9 connect capacitor C 24 an other end and-the 10V power supply; The pin 6 of microprocessor U7 connects the collector electrode of triode Q14, the pin 7 connection electrical resistance R16 of microprocessor U7, an other end of resistance R 16 connects the base stage of triode Q12 and Q14, the pin 8 of microprocessor U7 connects the collector electrode of triode Q112, and the emitter of triode Q12 and triode Q14 connects VHOA;
Microprocessor U2, the pipe of microprocessor U2,2 connect the positive pole of capacitor C 18, and the pin 4 of microprocessor U2 connects the negative pole of capacitor C 18; The pin 3 of microprocessor U2 connects the positive pole of capacitor C 8 negative poles, capacitor C 17, and the positive pole of capacitor C 8 connects the negative pole of diode D25, an end of capacitor C 21, the pin 8 of microprocessor U2, the other end series resistance R15 of diode D25 and+the 12V power supply; An other end of capacitor C 17 connects an other end of capacitor C 21, the negative pole of diode D27, the pin 5 of microprocessor U2, the positive pole connection-10V power supply of diode D27;
Microprocessor U8, the pin one connection+12V power supply of microprocessor U8, capacitor C 12, capacitor C 12 other one terminations-10V power supply; The pin 4 connection-10V power supplys of microprocessor U8; The pin 5 connection electrical resistance R9 of microprocessor U8, resistance R 9 other ends connect the base stage of collector electrode, triode Q10 and the Q7 of triode Q6, the base stage connection electrical resistance R7 of triode Q6, emitter connection-10V the power supply of triode Q6, the collector electrode of triode Q7 and Q10 connects respectively+12V and-10V power supply and series capacitance C25, the emitter of triode Q7 and Q10 connects VLOB; The pin 6 of microprocessor U8 connects the collector electrode of triode Q15, the pin 7 connection electrical resistance R18 of microprocessor U8, an other end of resistance R 18 connects the base stage of triode Q13 and Q15, the emitter of triode Q13 and Q15 connects VHOB, and the collector electrode of triode Q13 connects the pin 8 of microprocessor U8;
Integrated circuit U12, it comprises operational amplifier U12A, U12B, U12C, U12D, the in-phase output end of operational amplifier connects the reflection output of operational amplifier U12B, and the inverse output terminal of operational amplifier U12A connects the in-phase output end of operational amplifier U12B; The output of operational amplifier is an end of connection electrical resistance R113, resistance R 33 respectively, the output connection electrical resistance R114 of operational amplifier U12B and an end of resistance R 34, the other end of an other end connection electrical resistance R114 of resistance R 113, an end of resistance R 89, the output of operational amplifier U12D, other one termination of resistance R 89+12V power supply, the in-phase output end of operational amplifier U12D draws PWM, and the inverse output terminal of operational amplifier connects the inverse output terminal of operational amplifier U12C; The in-phase output end of operational amplifier U12C meets CHARGE; The output of operational amplifier U12C connects the negative pole of diode D3 and D6, the positive pole difference connection electrical resistance R33 of diode D3 and D6 and an other end of resistance R 34;
The pin 5 of integrated circuit U12 is connected to the pin one 1 of cpu control circuit U14; The pin 4 of integrated circuit U12 is connected to the pin one of output detection circuit R96; The pin 9 of integrated circuit U12 is connected to the pin two 2 of cpu control circuit U14; The pin 3 of microprocessor U7 is connected to the pin two of current foldback circuit R36; The pin one 1 of integrated circuit U12 is connected to the pin one of current foldback circuit D12.
Consult Fig. 5, described over current protection circuit comprises:
Integrated circuit, this circuit is made up of operational amplifier, the positive pole connection capacitor C 15 of operational amplifier U11A, capacitor C 15 ground connection, the in-phase output end connection electrical resistance R105 of operational amplifier U11A, capacitor C 27, resistance R 107, an other end ground connection of capacitor C 27, the other end series resistance R108 of resistance R 107, the in-phase output end of an other end connection electrical resistance R106 of resistance R 108, capacitor C 28, operational amplifier U11B, capacitor C 28 ground connection; The inverse output terminal connection electrical resistance R91 of operational amplifier U11A, resistance R 109, an other end and the resistance R 110 of the inverse output terminal connection electrical resistance R91 of operational amplifier U11B, an other end of resistance R 110 connects output and the resistance R 23 of operational amplifier U11B; The output connection electrical resistance R109 of operational amplifier U11A and resistance R 19; Resistance R 19 other ends connect the in-phase output end of capacitor C 46, resistance R 20 and operational amplifier U11C, resistance R 23 connects the inverse output terminal of capacitor C 47, resistance R 24 and operational amplifier U11C, the positive pole of the output of resistance R 24 connection operational amplifier U11V, resistance R 25, diode D19, resistance R 20 connect operational amplifier U11D in-phase output end and+the 5V power supply, the inverse output terminal of resistance R 25 connection electrical resistance R26, operational amplifier; Resistance R 26 connects the output of diode D20 positive pole, operational amplifier U11D, and the negative pole of diode D19 connects diode D20 negative pole, resistance R 35; An other end connection electrical resistance R115 of resistance R 35, the inverse output terminal of capacitor C 48, resistance R 22, operational amplifier U13A, resistance R 115, capacitor C 48 ground connection, resistance R 22 connects capacitor C 38, resistance R 11, capacitor C 38 ground connection; The output connection electrical resistance R116 of operational amplifier U13A, resistance R 36, the output of operational amplifier U13B, capacitor C 7; Resistance R 36 connection+5V power supplys, capacitor C 7 ground connection; The inverse output terminal of operational amplifier U13B connects capacitor C 16, an other end ground connection of capacitor C 16; The in-phase output end connection electrical resistance R116 of operational amplifier U13B and the negative pole of diode D21; The in-phase output end of operational amplifier U13A connects capacitor C 37, resistance R 21, capacitor C 37 ground connection; The output of resistance R 21 connection operational amplifier U10C and inverse output terminal, capacitor C 6; The output in the same way of operational amplifier U10C connects capacitor C 5, resistance R 112, capacitor C 5 ground connection; An other end of resistance R 112 connects capacitor C 6 and resistance R 111, the other end connection electrical resistance R32 of careerist R111, resistance R 32 ground connection;
Microprocessor U3 connects capacitor C 26, pipe 3 ground connection of microprocessor U3 between the pin two of microprocessor U3 and 4; The pin 5 of microprocessor U3 connect capacitor C 19 negative poles and-the 10V power supply; Capacitor C 19 plus earths; The pin 8 connection+12V power supplys of microprocessor U3;
The pin one of R111 is connected to the pin one 3 of cpu control circuit U14; The pin two of R36 is connected to the pin 3 of PWM modulation circuit U7; The pin two of R11 is connected to the pin 3 of cpu control circuit U14; The pin of D12 is connected to the pin one 1 of PWM modulation circuit U12.
Consult Fig. 6, described output circuit structure: the output series resistance R88 of operational amplifier U9A, capacitor C 36, capacitor C 36 is held ground connection in addition; The inverse output terminal of operational amplifier U9A connects the inverse output terminal of capacitor C 13, resistance R 95, resistance R 96, operational amplifier U9B, and capacitor C 13 and resistance R 96 are held ground connection in addition, and resistance R 95 is end connection+5V power supply in addition; The output resistance R 93 of operational amplifier U9B, resistance R 93 end in addition connects capacitor C 55, and capacitor C 55 is held ground connection in addition; The in-phase output end of operational amplifier U9A connects capacitor C 39, resistance R 41, capacitor C 39 hold ground connection in addition; Resistance R 41 is held connection electrical resistance R97, resistance R 98 in addition, resistance R 97 ground connection, and resistance R 98 connection electrical resistance R101, the inverse output terminal of operational amplifier U10A, resistance R 44, resistance R 44 connects capacitor C 42, capacitor C 42 ground connection; The in-phase output end connection electrical resistance R102 of operational amplifier, resistance R 42, resistance R 42 connects capacitor C 41, capacitor C 41 ground connection, resistance R 102 connection+5V power supplys; The in-phase output end of operational amplifier U9B connects capacitor C 40, resistance R 43, capacitor C 40 ground connection, resistance R 43 connection electrical resistance R99, resistance R 100, resistance R 99 ground connection, the output of resistance R 100 connection electrical resistance R103 and operational amplifier U10B; Resistance R 103 connects inverse output terminal and the resistance R 46 of operational amplifier U10B, and resistance R 46 connects capacitor C 44, capacitor C 44 ground connection; The in-phase output end connection electrical resistance R104 of operational amplifier U10B, resistance R 45, resistance R 104 is termination+5V power supply in addition, and resistance R 45 is termination capacitor C43 in addition, capacitor C 43 ground connection;
The pin one of resistance R 88 is connected to the pin two 8 of cpu control circuit U14; The pin one of resistance R 93 is connected to the pin two 7 of cpu control circuit U14; The pin two of resistance R 42 is connected to the pin one of power-supplying circuit J5; The pin one of resistance R 43 is connected to the pin 7 of cpu control circuit U14; The pin two of resistance R 44 is connected to the pin two of power-supplying circuit J5; The pin two of resistance R 45 is connected to the pin 3 of power-supplying circuit J5; The pin two of resistance R 46 is connected to the pin 4 of power-supplying circuit J5.。
Claims (6)
1. wind power-generating grid-connected inversion system is characterized in that, comprising:
The direct current input equipment, wind energy is converted into the alternating current of amplitude and frequency change by wind-driven generator, and the alternating current of conversion is transformed to direct current by controller;
Inverter circuit is converted into direct current energy and electrical network same frequency, synchronous sine-wave current, and with this electric power feed-in electrical network;
Microprocessor, the sampled signal of reception DC input voitage, the synchronizing signal of line voltage, and the ac output voltage signal of inverter circuit; Drive inverter circuit work by drive circuit;
Keyboard input circuit and display circuit are used for input and show microprocessor information.
2. wind power-generating grid-connected according to claim 1 inversion system is characterized in that described inverter circuit comprises: cpu control circuit, power-supplying circuit, PWM modulation circuit, current foldback circuit, output detection circuit; Cpu control circuit is joining power power supply circuits, PWM modulation circuit, current foldback circuit, output detection circuit respectively; Current foldback circuit connects the PW modulation circuit; Power-supplying circuit connects output detection circuit.
3. as wind power-generating grid-connected inversion system as described in the claim 2, it is characterized in that cpu control circuit comprises:
Controller J1;
Controller J2, the pin 5 connection electrical resistance R79 of controller J2; An other end of resistance R 79 connects capacitor C22 and resistance R 78, the other end ground connection of resistor C22, and an other end of resistance R 78 connects OAD AD;
Controller J3, the pin one connection+BAT of controller J3, the pin two of controller J3 connects the positive pole of capacitor C45, capacitor C35, and the end of capacitor C23; The positive pole of capacitor C45, capacitor C35, and the other end ground connection of capacitor C23; Pin 5,6,7,8 ground connection of controller J3;
The pin one ground connection of controller J4, the pin two of controller J4,3,4 is the end of connection electrical resistance R86, R85, R84 respectively, and the other end of resistance R 86, R85, R84 connects LCD0, LCD1, LCD2; The pin 5 connection+5V power supplys of controller J4; The pin 6 and 7 of controller J4 connects POWER and switch respectively;
Controller J5, the pin one ground connection of controller J5; Controller is at the pin two connection electrical resistance R17 of J5 and an end of resistance R 40, and an other end of resistance R 17 connects the base stage of triode Q1, an other end connection+5V power supply of the collector electrode of triode Q1 and resistance R 40; The end of the emitter connection electrical resistance R39 of triode Q1, an other end of resistance R 39 connects LCD2;
Microcontroller U14, the pin one connection electrical resistance R67 of microcontroller U14 and the end of capacitor C2, capacitor C 2 other end ground connection, an other end connection+5V power supply of resistance R 67; The pin two of microcontroller U14 connects an end of positive pole, resistance R 2, R87 and the capacitor C 51 of triode D100; An other end ground connection of capacitor C 51 and resistance R 2; The other one termination+BAT of resistance R 87, the minus earth of triode D100; Pin 6 coupled in series resistance R 77 and the buzzer BUZ1 of microcontroller U14; Pin 8 ground connection of microcontroller U14; The pin 9 of microcontroller U14 connects crystal oscillator Z2 and capacitor C 49, capacitor C 49 other end ground connection; The pin one 1 of microcontroller U14 connects other end of crystal oscillator Z2 and capacitor C 50, capacitor C 50 other end ground connection; One end of pin one 7 connection electrical resistance R4, resistance R 1 and the resistance R 3 of microcontroller U14, resistance R 4 other end ground connection, a resistance R! An other end connect the pin two of controller J6, pin 3 ground connection of controller J6, the other end of the pin one connection electrical resistance R3 of controller J6 and the pin one 8 of microcontroller U14; The pin one 9 of microcontroller U14 connects an end and the ground connection of capacitor C 29, the pin two 0 of microcontroller U14 connect capacitor C 29 other ends and+the 5V power supply; The end of the pin two 6 connection electrical resistance R31 of microcontroller U14; Microcontroller U14 pin two 8 is connected to the pin one of output detection circuit resistance R 88; The pin two 7 of microcontroller U14 is connected to the pin one of output detection circuit resistance R 93; The pin 4 of microcontroller U14 is connected to the pin one of power-supplying circuit resistance R 4; The pin one 3 of microcontroller U14 is connected to the pin one of current foldback circuit R111; The pin 3 of microcontroller U14 is connected to the pin two of current foldback circuit R11; The pin one 1 of microcontroller U14 is connected to the pin 5 of PWM modulation circuit U12; The pin two 2 of microcontroller U14 is connected to the pin 9 of PWM modulation circuit U12;
The pin one of J2-5 is connected to the pin one-5 of power-supplying circuit J5; The pin one of J1-6 is connected to the pin one-6 of power-supplying circuit J6; The pin one of J3-8 is connected to the pin one-8 of power-supplying circuit J7; The pin 6 of J1 is connected to the pin one of power-supplying circuit resistance R 11; The pin 5 of J1 is connected to the pin two of power-supplying circuit resistance R 38.
4. as wind power-generating grid-connected inversion system as described in the claim 2, it is characterized in that described PWM modulation circuit comprises:
Microprocessor U1, the pin two of little processing 1 connects the positive pole of capacitor C 10, and the negative pole of capacitor C 10 connects the negative pole of microcontroller U1; The pin 3 of microprocessor U1 connects the negative pole of capacitor C 1 and the positive pole of capacitor C 9, the positive pole of capacitor C 1 connects an end of pin 8, diode D24 negative pole and the capacitor C 20 of microprocessor U1, the anodal connection electrical resistance R13 of diode D24, other one termination of resistance R 13+12V power supply; The negative pole of capacitor C 9 connects pin 5, the negative pole of diode D26 and the other end of capacitor C 20 of microprocessor U1, the plus earth of diode D26;
Microprocessor U7, the pin one of microprocessor U7 connect capacitor C 11 and+the 12V power supply, the pin 4 connection-10V power supplys of microprocessor U7, the pin 5 connection electrical resistance R8 of microprocessor U7, an other end of resistance 8 connects the base stage of collector electrode, triode Q9 and the Q3 of triode Q2, the base stage coupled in series resistance R 6 of triode Q2, triode Q2 emitter connection-10V power supply, the emitter of triode Q9 and Q3 connects VLOA, collector electrode connection+12V the power supply of triode Q3 and capacitor C 24, the collector electrode of triode Q9 connect capacitor C 24 an other end and-the 10V power supply; The pin 6 of microprocessor U7 connects the collector electrode of triode Q14, the pin 7 connection electrical resistance R16 of microprocessor U7, an other end of resistance R 16 connects the base stage of triode Q12 and Q14, the pin 8 of microprocessor U7 connects the collector electrode of triode Q112, and the emitter of triode Q12 and triode Q14 connects VHOA;
Microprocessor U2, the pipe of microprocessor U2,2 connect the positive pole of capacitor C 18, and the pin 4 of microprocessor U2 connects the negative pole of capacitor C 18; The pin 3 of microprocessor U2 connects the positive pole of capacitor C 8 negative poles, capacitor C 17, and the positive pole of capacitor C 8 connects the negative pole of diode D25, an end of capacitor C 21, the pin 8 of microprocessor U2, the other end series resistance R15 of diode D25 and+the 12V power supply; An other end of capacitor C 17 connects an other end of capacitor C 21, the negative pole of diode D27, the pin 5 of microprocessor U2, the positive pole connection-10V power supply of diode D27;
Microprocessor U8, the pin one connection+12V power supply of microprocessor U8, capacitor C 12, capacitor C 12 other one terminations-10V power supply; The pin 4 connection-10V power supplys of microprocessor U8; The pin 5 connection electrical resistance R9 of microprocessor U8, resistance R 9 other ends connect the base stage of collector electrode, triode Q10 and the Q7 of triode Q6, the base stage connection electrical resistance R7 of triode Q6, emitter connection-10V the power supply of triode Q6, the collector electrode of triode Q7 and Q10 connects respectively+12V and-10V power supply and series capacitance C25, the emitter of triode Q7 and Q10 connects VLOB; The pin 6 of microprocessor U8 connects the collector electrode of triode Q15, the pin 7 connection electrical resistance R18 of microprocessor U8, an other end of resistance R 18 connects the base stage of triode Q13 and Q15, the emitter of triode Q13 and Q15 connects VHOB, and the collector electrode of triode Q13 connects the pin 8 of microprocessor U8;
Integrated circuit U12, it comprises operational amplifier U12A, U12B, U12C, U12D, the in-phase output end of operational amplifier connects the reflection output of operational amplifier U12B, and the inverse output terminal of operational amplifier U12A connects the in-phase output end of operational amplifier U12B; The output of operational amplifier is an end of connection electrical resistance R113, resistance R 33 respectively, the output connection electrical resistance R114 of operational amplifier U12B and an end of resistance R 34, the other end of an other end connection electrical resistance R114 of resistance R 113, an end of resistance R 89, the output of operational amplifier U12D, other one termination of resistance R 89+12V power supply, the in-phase output end of operational amplifier U12D draws PWM, and the inverse output terminal of operational amplifier connects the inverse output terminal of operational amplifier U12C; The in-phase output end of operational amplifier U12C meets CHARGE; The output of operational amplifier U12C connects the negative pole of diode D3 and D6, the positive pole difference connection electrical resistance R33 of diode D3 and D6 and an other end of resistance R 34;
The pin 5 of integrated circuit U12 is connected to the pin one 1 of cpu control circuit U14; The pin 4 of integrated circuit U12 is connected to the pin one of output detection circuit R96; The pin 9 of integrated circuit U12 is connected to the pin two 2 of cpu control circuit U14; The pin 3 of microprocessor U7 is connected to the pin two of current foldback circuit R36; The pin one 1 of integrated circuit U12 is connected to the pin one of current foldback circuit D12.
5. as wind power-generating grid-connected inversion system as described in the claim 2, it is characterized in that described over current protection circuit comprises:
Integrated circuit, this circuit is made up of operational amplifier, positive pole connection roadblock capacitor C 15 ground connection of operational amplifier U11A, the in-phase output end connection electrical resistance R105 of operational amplifier U11A, capacitor C 27, resistance R 107, an other end ground connection of capacitor C 27, the other end series resistance R108 of resistance R 107, the in-phase output end of an other end connection electrical resistance R106 of resistance R 108, capacitor C 28, operational amplifier U11B, capacitor C 28 ground connection; The inverse output terminal connection electrical resistance R91 of operational amplifier U11A, resistance R 109, an other end and the resistance R 110 of the inverse output terminal connection electrical resistance R91 of operational amplifier U11B, an other end of resistance R 110 connects output and the resistance R 23 of operational amplifier U11B; The output connection electrical resistance R109 of operational amplifier U11A and resistance R 19; Resistance R 19 other ends connect the in-phase output end of capacitor C 46, resistance R 20 and operational amplifier U11C, resistance R 23 connects the inverse output terminal of capacitor C 47, resistance R 24 and operational amplifier U11C, the positive pole of the output of resistance R 24 connection operational amplifier U11V, resistance R 25, diode D19, resistance R 20 connect operational amplifier U11D in-phase output end and+the 5V power supply, the inverse output terminal of resistance R 25 connection electrical resistance R26, operational amplifier; Resistance R 26 connects the output of diode D20 positive pole, operational amplifier U11D, and the negative pole of diode D19 connects diode D20 negative pole, resistance R 35; An other end connection electrical resistance R115 of resistance R 35, the inverse output terminal of capacitor C 48, resistance R 22, operational amplifier U13A, resistance R 115, capacitor C 48 ground connection, resistance R 22 connects capacitor C 38, resistance R 11, capacitor C 38 ground connection; The output connection electrical resistance R116 of operational amplifier U13A, resistance R 36, the output of operational amplifier U13B, capacitor C 7; Resistance R 36 connection+5V power supplys, capacitor C 7 ground connection; The inverse output terminal of operational amplifier U13B connects capacitor C 16, an other end ground connection of capacitor C 16; The in-phase output end connection electrical resistance R116 of operational amplifier U13B and the negative pole of diode D21; The in-phase output end of operational amplifier U13A connects capacitor C 37, resistance R 21, capacitor C 37 ground connection; The output of resistance R 21 connection operational amplifier U10C and inverse output terminal, capacitor C 6; The output in the same way of operational amplifier U10C connects capacitor C 5, resistance R 112, capacitor C 5 ground connection; An other end of resistance R 112 connects capacitor C 6 and resistance R 111, the other end connection electrical resistance R32 of careerist R111, resistance R 32 ground connection;
Microprocessor U3 connects capacitor C 26, pipe 3 ground connection of microprocessor U3 between the pin two of microprocessor U3 and 4; The pin 5 of microprocessor U3 connect capacitor C 19 negative poles and-the 10V power supply; Capacitor C 19 plus earths; The pin 8 connection+12V power supplys of microprocessor U3;
The pin one of R111 is connected to the pin one 3 of cpu control circuit U14; The pin two of R36 is connected to the pin 3 of PWM modulation circuit U7; The pin two of R11 is connected to the pin 3 of cpu control circuit U14; The pin of D12 is connected to the pin one 1 of PWM modulation circuit U12.
6. as wind power-generating grid-connected inversion system as described in the claim 2, it is characterized in that described output circuit structure: the output series resistance R88 of operational amplifier U9A, capacitor C 36, capacitor C 36 is held ground connection in addition; The inverse output terminal of operational amplifier U9A connects the inverse output terminal of capacitor C 13, resistance R 95, resistance R 96, operational amplifier U9B, and capacitor C 13 and resistance R 96 are held ground connection in addition, and resistance R 95 is end connection+5V power supply in addition; The output resistance R 93 of operational amplifier U9B, resistance R 93 end in addition connects capacitor C 55, and capacitor C 55 is held ground connection in addition; The in-phase output end of operational amplifier U9A connects capacitor C 39, resistance R 41, capacitor C 39 hold ground connection in addition; Resistance R 41 is held connection electrical resistance R97, resistance R 98 in addition, resistance R 97 ground connection, and resistance R 98 connection electrical resistance R101, the inverse output terminal of operational amplifier U10A, resistance R 44, resistance R 44 connects capacitor C 42, capacitor C 42 ground connection; The in-phase output end connection electrical resistance R102 of operational amplifier, resistance R 42, resistance R 42 connects capacitor C 41, capacitor C 41 ground connection, resistance R 102 connection+5V power supplys; The in-phase output end of operational amplifier U9B connects capacitor C 40, resistance R 43, capacitor C 40 ground connection, resistance R 43 connection electrical resistance R99, resistance R 100, resistance R 99 ground connection, the output of resistance R 100 connection electrical resistance R103 and operational amplifier U10B; Resistance R 103 connects inverse output terminal and the resistance R 46 of operational amplifier U10B, and resistance R 46 connects capacitor C 44, capacitor C 44 ground connection; The in-phase output end connection electrical resistance R104 of operational amplifier U10B, resistance R 45, resistance R 104 is termination+5V power supply in addition, and resistance R 45 is termination capacitor C43 in addition, capacitor C 43 ground connection; The pin one of resistance R 88 is connected to the pin two 8 of cpu control circuit U14; The pin one of resistance R 93 is connected to the pin two 7 of cpu control circuit U14; The pin two of resistance R 42 is connected to the pin one of power-supplying circuit J5; The pin one of resistance R 43 is connected to the pin 7 of cpu control circuit U14; The pin two of resistance R 44 is connected to the pin two of power-supplying circuit J5; The pin two of resistance R 45 is connected to the pin 3 of power-supplying circuit J5; The pin two of resistance R 46 is connected to the pin 4 of power-supplying circuit J5.
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| CN104685755A (en) * | 2012-10-02 | 2015-06-03 | 松下知识产权经营株式会社 | Power control system and solar power generation system |
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| CN106972797A (en) * | 2017-04-28 | 2017-07-21 | 扬州乔恒电子有限公司 | A kind of small-sized wind power generator incorporated in power network controller for preventing from frequently braking |
| CN113036812A (en) * | 2021-04-28 | 2021-06-25 | 南方海洋科学与工程广东省实验室(湛江) | Grid-connected system for ocean temperature difference energy power generation |
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| CN113054730B (en) * | 2021-03-26 | 2024-03-26 | 许昌学院 | Power frequency wind power generation energy storage inverter circuit |
| CN113036812A (en) * | 2021-04-28 | 2021-06-25 | 南方海洋科学与工程广东省实验室(湛江) | Grid-connected system for ocean temperature difference energy power generation |
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Effective date of registration: 20161115 Address after: 528225 Guangdong Province Nanhai District of Foshan City Shishan village Langsha Avenue North of the Patentee after: Foshan Ouyad Electronic Co., Ltd. Address before: 510000, Guangzhou, Guangdong province Panyu District Dashi seaside garden, Hai Hua Ge, block B, room 704 Patentee before: Tan Zongxiang |