CN102176630B - Charging method by raising instantaneous power for wind power generation system - Google Patents
Charging method by raising instantaneous power for wind power generation system Download PDFInfo
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- CN102176630B CN102176630B CN 201110065087 CN201110065087A CN102176630B CN 102176630 B CN102176630 B CN 102176630B CN 201110065087 CN201110065087 CN 201110065087 CN 201110065087 A CN201110065087 A CN 201110065087A CN 102176630 B CN102176630 B CN 102176630B
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- 238000007600 charging Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000010248 power generation Methods 0.000 title claims abstract description 12
- 238000003860 storage Methods 0.000 claims abstract description 35
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 238000005070 sampling Methods 0.000 claims abstract description 15
- 238000010278 pulse charging Methods 0.000 claims abstract description 3
- 230000005669 field effect Effects 0.000 claims description 29
- 239000003990 capacitor Substances 0.000 claims description 21
- 238000004146 energy storage Methods 0.000 claims description 18
- 239000013068 control sample Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000000523 sample Substances 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 3
- 239000002699 waste material Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 1
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- 230000014759 maintenance of location Effects 0.000 description 1
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The invention relates to a charging method by raising instantaneous power for a wind power generation system. A wind-driven generator generates three-phase alternating current which is converted into direct current (DC) by a rectifying and filtering circuit; an energy storing device and a DC/DC converting circuit are additionally arranged behind the rectifying circuit, low-voltage and low-current energy generated by the wind-driven generator under low wind velocity is instantly released to raise the instantaneous power for charging the energy storing device; and a sampling circuit is controlled to sample the voltage of the wind-driven generator, and according to the voltage, whether a switching circuit needs to be cut off for charging the energy storing device, or whether to output pulse width signals to drive the switching circuit to perform pulse charging on a storage battery is judged. The invention solves the problem of waste of energy generated by the generator under low wind velocity, and simultaneously realizes control of the rotation speed of the wind-driven generator to avoid damage of the generator.
Description
One. technical field
The present invention relates to a kind of charging method by raising instantaneous power for wind power generation system, especially relate to a kind of low wind speed, a kind of wind generator system that can charge a battery under the low-voltage state and instantaneous power promote charging method, belong to the electron controls technology field.
Two. background technology
Wind power generation is because the plurality of advantages such as it is pollution-free, aboundresources, cost are low, and to protection of the environment, it is significant to improve energy resource structure.Wind generating technology is day by day ripe, and market just progressively enlarges, and now has been widely applied in remote areas without electricity and the grid-connected system.Known wind-driven power generation control system such as Fig. 1: the alternating current of wind-driven generator 1 output becomes direct current behind current rectifying and wave filtering circuit 2, sampling control circuit 5 determines whether to open 3 pairs of storage batterys 4 of switching circuit and charges by gathering the electric current and voltage data that discharge and recharge of wind-driven generator, storage battery.Known this control method effect well when wind speed is high, the electric current and voltage that generator produces when wind speed is relatively low is all lower, little electric current like this is also very low to battery (particularly colloid storage battery) charge efficiency, the voltage of generator even be lower than the voltage of storage battery, the electric energy that this moment, generator produced can not be charged storage battery.Because the actual power coefficient of wind-driven generator is lower than 0.593, the energy that generator produces in the situation of low wind speed many times is to be wasted, so take full advantage of also most important to the energy of generator output.
Three. summary of the invention
For the problems referred to above, the purpose of this invention is to provide a kind of charging method by raising instantaneous power for wind power generation system, in the situation of the low little electric current of wind speed low-voltage, can produce larger transient current to charge in batteries, instantaneous elevator system power is also controlled the rotating speed of blade of wind-driven generator intelligently, be unlikely to make wind-driven generator under low wind speed, can not rotate or under high wind speed rotating speed too fast, wind-driven generator itself is worked the mischief.
The present invention is achieved through the following technical solutions, and it comprises wind-driven generator 1, current rectifying and wave filtering circuit 2, energy storage device 3, switching circuit 4, control sample circuit 5, DC/DC translation circuit 6, storage battery 7.The lead-out terminal 1 of wind-driven generator T1,2,3 are connected respectively to by diode D1, D2, D3, D4, D5, the interchange input a of the three-phase commutation bridge that D6 forms, b, the c end, capacitor C 1 through being connected in parallel after alternating current is rectified, C2 carries out filtering and becomes direct current, capacitor C 1, the C2 negative pole is connected to ground, positive pole is connected to by diode D1, D2, D3, D4, D5, the output head anode of the three-phase commutation bridge that D6 forms, resistance R 1, R2 is cascaded and forms voltage sampling circuit wind-driven generator voltage is sampled, resistance R 1, the pin 1 that the signal that the R2 sampling obtains is input to processor IC1 carries out the magnitude of voltage that analog-to-digital conversion obtains wind-driven generator, field effect transistor Q2, Q3, transformer T2 forms the DC/DC translation circuit jointly, the square wave that the signal that processor IC1 obtains according to sampling is exported corresponding pulsewidth drives field effect transistor Q2 to driver IC 2, Q3 carries out conversion to direct current and becomes alternating current, alternating current boosts through transformer T2 and obtains higher alternating voltage, then output to the back by diode D7, D8, D9, D10, the filter rectifier that capacitor C 3 forms, its connected mode is the source electrode that the 1st output d end of transformer T2 is connected to field effect transistor Q2, the 2nd output e end of transformer T2 is connected to the source electrode of field effect transistor Q3, the 3rd output h end of transformer T2 is connected to ground, field effect transistor Q2, the drain electrode of Q3 all is connected to the positive source behind the rectifying and wave-filtering, field effect transistor Q2, the grid of Q3 is connected respectively to the pin 2 and 4 of driver IC 2, field effect transistor Q1 is an electronic switch, determined whether to open according to the voltage of wind-driven generator by processor IC1, its connected mode is that field effect transistor Q1 source electrode is connected to storage battery BT1 positive pole, drain electrode is connected to the positive pole of capacitor C 2, field effect transistor Q1 grid is connected to driver IC 2 pins 6, the 4th output g end of transformer T2 and the 5th output f end are received respectively D7, D8, D9, the interchange input k of the rectifier bridge that D10 forms, the p end, the rectifier bridge rectification is filtered into direct current by capacitor C 3 and is filled into storage battery BT1, its connected mode is the positive pole that diode D7 negative pole connects diode D9, diode D8 negative pole connects the positive pole of diode D10, diode D7, the positive pole of D8 is connected to the positive pole of capacitor C 3, diode D9, the negative pole of D10 is connected to ground, the positive pole of capacitor C 3 is connected to the positive pole of storage battery BT1, the C3 minus earth, storage battery BT1 minus earth, 2 of processor IC1,4,6 pin are connected respectively to 1 of driver IC 2,3,5 pin.
Operation principle of the present invention: produce three-phase alternating current at the situation apparatus for lower wind generator 1 that wind is arranged, this alternating current is converted into direct current through behind current rectifying and wave filtering circuit 2, and direct current gets up stored energy by energy storage device 3; Control sample circuit 5 sampling wind-driven generators 1 magnitude of voltage, size according to voltage, whether need closing switch circuit 4 pair energy storage devices 3 charge or output pulse width signal driver switching circuit 4 realize pulse current charge to storage battery 7, realize simultaneously the control to wind-driven generator 1 rotating speed if judging.If the voltage low-power of wind-driven generator 1 output is little, then 4 pairs of energy storage devices 3 of closing switch circuit charge, when the energy of energy storage device 3 storage during to certain value, control sample circuit 5 starts the energy accumulators 7 that 6 abrupt releases of DC/DC translation circuits go out energy storage device 3 interior storages and charges.Close again DC/DC translation circuit 6 behind the discharge off and make energy storage device 3 again charge, so repeat above step.Control sample circuit 5 does not also stop to gather the voltage signal of wind-driven generator 1 in the process of energy storage discharge, if wind speed improves the voltage rising increased power of wind-driven generator 1 output in above process, the voltage signal of the wind-driven generator 1 that control sample circuit 5 bases collect is calculated the charging pulsewidth, by calculate to pulsewidth not only can also control well to greatest extent the rotating speed of wind-driven generator 1 to the energy that utilizes wind-driven generator 1, make wind-driven generator 1 be unlikely to when wind-force changes arbitrarily rotating speed neglect fast neglect slow, if wind-driven generator 1 power output continues to be elevated to enough greatly directly accumulators 7 chargings, then controlling sample circuit 5 will open switching circuit 4 and directly storage battery 7 be charged, with a small amount of energy loss that reduces to bring because of the DC/DC conversion, thereby the electric energy with wind-driven generator 1 output is filled in the storage battery 7 to greatest extent, otherwise repeat above step, storage battery 7 is carried out pulse charging, until wind-driven generator 1 power output is just opened switching circuit 4 when enough large.
The advantage of comparing with known technology and good effect:
1, the low-voltage that under low wind speed, wind-driven generator can be sent, the energy of little electric current, abrupt release out, the realization instantaneous power promotes charges to storage battery, has avoided wind-driven generator to be difficult to charge a battery under low wind speed, also is very low problem even be charged into efficient.
2, can control intelligently the rotating speed of blade of wind-driven generator, be unlikely to make wind-driven generator under low wind speed, can not rotate or under high wind speed rotating speed too fast, wind-driven generator itself is worked the mischief.
Four. description of drawings
Fig. 1 is principle of the invention block diagram, and 1 is wind-driven generator among the figure, and 2 is current rectifying and wave filtering circuit, and 3 is energy storage device, and 4 is switching circuit, and 5 are the control sample circuit, and 6 is the DC/DC translation circuit, and 7 is storage battery; Fig. 2 is circuit connection diagram of the present invention; Fig. 3 is embodiment 2 circuit connection diagrams, and the module of corresponding numbering is corresponding one by one among Module Division and Fig. 2.
Five. embodiment
Embodiment 1: the circuit connection diagram that is illustrated in figure 2 as the wind driven generator controller that has the instantaneous power enhanced feature.It comprises wind-driven generator 1, current rectifying and wave filtering circuit 2, energy storage device 3, switching circuit 4, control sample circuit 5, DC/DC translation circuit 6, storage battery 7.The lead-out terminal 1 of wind-driven generator T1,2,3 are connected respectively to by diode D1, D2, D3, D4, D5, the interchange input a of the three-phase commutation bridge that D6 forms, b, the c end, capacitor C 1 through being connected in parallel after alternating current is rectified, C2 carries out filtering and becomes direct current, capacitor C 1, the C2 negative pole is connected to ground, positive pole is connected to by diode D1, D2, D3, D4, D5, the output head anode of the three-phase commutation bridge that D6 forms, resistance R 1, R2 is cascaded and forms voltage sampling circuit wind-driven generator voltage is sampled, resistance R 1, the pin 1 that the signal that the R2 sampling obtains is input to processor IC1 carries out the magnitude of voltage that analog-to-digital conversion obtains wind-driven generator, field effect transistor Q2, Q3, transformer T2 forms the DC/DC translation circuit jointly, the square wave that the signal that processor IC1 obtains according to sampling is exported corresponding pulsewidth drives field effect transistor Q2 to driver IC 2, Q3 carries out conversion to direct current and becomes alternating current, alternating current boosts through transformer T2 and obtains higher alternating voltage, then output to the back by diode D7, D8, D9, D10, the filter rectifier that capacitor C 3 forms, its connected mode is the source electrode that the 1st output d end of transformer T2 is connected to field effect transistor Q2, the 2nd output e end of transformer T2 is connected to the source electrode of field effect transistor Q3, the 3rd output h end of transformer T2 is connected to ground, field effect transistor Q2, the drain electrode of Q3 all is connected to the positive source behind the rectifying and wave-filtering, field effect transistor Q2, the grid of Q3 is connected respectively to the pin 2 and 4 of driver IC 2, field effect transistor Q1 is an electronic switch, determined whether to open according to the voltage of wind-driven generator by processor IC1, its connected mode is that field effect transistor Q1 source electrode is connected to storage battery BT1 positive pole, drain electrode is connected to the positive pole of capacitor C 2, field effect transistor Q1 grid is connected to driver IC 2 pins 6, the 4th output g end of transformer T2 and the 5th output f end are received respectively D7, D8, D9, the interchange input k of the rectifier bridge that D10 forms, the p end, the rectifier bridge rectification is filtered into direct current by capacitor C 3 and is filled into storage battery BT1, its connected mode is the positive pole that diode D7 negative pole connects diode D9, diode D8 negative pole connects the positive pole of diode D10, diode D7, the positive pole of D8 is connected to the positive pole of capacitor C 3, diode D9, the negative pole of D10 is connected to ground, the positive pole of capacitor C 3 is connected to the positive pole of storage battery BT1, the C3 minus earth, storage battery BT1 minus earth, 2 of processor IC1,4,6 pin are connected respectively to 1 of driver IC 2,3,5 pin.During low wind speed, the alternating current of wind-driven generator output is filled in the electric capacity behind rectifying and wave-filtering, the energy correlation of the length in concrete charging interval and wind-driven generator output does not wait from 0.5s to 10s, controlling in the meantime sample circuit samples to the voltage of electric capacity and storage battery with every 10ms speed once, whether the data that processor obtains according to sampling calculate storage battery and are full of, whether the power output of current wind-driven generator is enough large, if storage battery not yet is full of, the power of wind-driven generator is enough large, then control circuit is directly opened charge switch circuit, (gets 1kHz～5kHz) and the time span of inversion otherwise the data that processor obtains according to sampling calculate the pulsewidth of required switching circuit and the frequency of instantaneous inversion.
Embodiment 2: circuit connection diagram as shown in Figure 3.The structure of embodiment 1 Fig. 2 has been saved field effect transistor Q2, diode D7, D8, D9, D10 relatively, and the circuit connecting mode of other elements is identical with Fig. 2.Therefore circuit is more succinct, and cost descends to some extent.
Claims (5)
1. charging method by raising instantaneous power for wind power generation system, it is characterized in that: comprise wind-driven generator (1), current rectifying and wave filtering circuit (2), energy storage device (3), switching circuit (4), control sample circuit (5), DC/DC translation circuit (6) and storage battery (7), its circuit connecting mode is: the lead-out terminal 1 of wind-driven generator, 2,3 are connected respectively to by diode D1, D2, D3, D4, D5 inputs a with the exchanging of three-phase commutation bridge that D6 forms, b, the c end, capacitor C 1 through being connected in parallel after alternating current is rectified, C2 carries out filtering and becomes direct current, capacitor C 1, the C2 negative pole is connected to ground, positive pole is connected to by diode D1, D2, D3, D4, D5, the output head anode of the three-phase commutation bridge that D6 forms, resistance R 1, R2 is cascaded and forms voltage sampling circuit wind-driven generator voltage is sampled, resistance R 1, the pin 1 that the signal that the R2 sampling obtains is input to processor IC1 carries out the magnitude of voltage that analog-to-digital conversion obtains wind-driven generator, field effect transistor Q2, Q3, transformer T2 forms the DC/DC translation circuit jointly, the square wave that the signal that processor IC1 obtains according to sampling is exported corresponding pulsewidth drives field effect transistor Q2 to driver IC 2, Q3 carries out conversion to direct current and becomes alternating current, alternating current boosts through transformer T2 and obtains higher alternating voltage, then output to the back by diode D7, D8, D9, the filter rectifier that D10 and capacitor C 3 form, its connected mode is the source electrode that the d end of transformer T2 is connected to field effect transistor Q2, the e end of transformer T2 is connected to the source electrode of field effect transistor Q3, the h end of transformer T2 is connected to ground, field effect transistor Q2, the drain electrode of Q3 all is connected to the positive source behind the rectifying and wave-filtering, field effect transistor Q2, the grid of Q3 is connected respectively to the pin 2 and 4 of driver IC 2, field effect transistor Q1 is an electronic switch, determined whether to open according to the voltage of wind-driven generator by processor IC1, its connected mode is that field effect transistor Q1 source electrode is connected to battery positive voltage, drain electrode is connected to the positive pole of capacitor C 2, field effect transistor Q1 grid is connected to driver IC 2 pins 6, g end and the f end of transformer T2 are received respectively D7, D8, D9 inputs k with the exchanging of rectifier bridge that D10 forms, the p end, the rectifier bridge rectification is filtered into direct current by capacitor C 3 and is filled into storage battery, its connected mode is the positive pole that diode D7 negative pole connects diode D9, diode D8 negative pole connects the positive pole of diode D10, diode D7, the positive pole of D8 is connected to the positive pole of capacitor C 3, diode D9, the negative pole of D10 is connected to ground, the positive pole of capacitor C 3 is connected to the positive pole of storage battery, the C3 minus earth, battery terminal negative ground connection, 2 of processor IC1,4,6 pin are connected respectively to 1 of driver IC 2,3,5 pin, wherein the d of transformer T2 end and e end are respectively the two-end-point of a winding of transformer T2, the h end is the centre tap of the winding of transformer T2, and g end and f end are respectively the two-end-point of transformer T2 secondary winding.
2. charging method by raising instantaneous power for wind power generation system according to claim 1 is characterized in that: saved field effect transistor Q2, diode D7, D8, D9 and D10 in the circuit.
3. charging method by raising instantaneous power for wind power generation system according to claim 1, it is characterized in that: produce three-phase alternating current at the situation apparatus for lower wind generator (1) that wind is arranged, be converted into direct current behind this alternating current process current rectifying and wave filtering circuit (2), direct current gets up stored energy by energy storage device (3), control sample circuit (5) sampling wind-driven generator magnitude of voltage, size according to voltage, whether judge needs closing switch circuit (4) that energy storage device (3) is charged, it is characterized in that if the voltage low-power of wind-driven generator (1) output is little, then closing switch circuit (4) charges to energy storage device (3), when the energy of energy storage device (3) storage during to certain value, control sample circuit (5) starts energy accumulators (7) charging that DC/DC translation circuit (6) abrupt release goes out storage in the energy storage device (3), close again DC/DC translation circuit (6) behind the discharge off and make energy storage device (3) again charge, so repeat above step.
4. charging method by raising instantaneous power for wind power generation system according to claim 1, it is characterized in that: in the process of energy storage discharge, control the voltage signal that sample circuit (5) does not also stop to gather wind-driven generator (1), wind speed improves the voltage rising increased power of wind-driven generator (1) output in above process, control sample circuit (5) is calculated the charging pulsewidth according to the voltage signal of the wind-driven generator (1) that collects, by calculate to pulsewidth maximally utilise the energy of wind-driven generator (1), can control well again the rotating speed of wind-driven generator (1), make wind-driven generator (1) in the situation that wind-force changes, keep a stable rotating speed.
5. charging method by raising instantaneous power for wind power generation system according to claim 1, it is characterized in that: when wind-driven generator (1) power output continues to be elevated to directly accumulators (7) charging, then controlling sample circuit (5) will open switching circuit (4) and directly storage battery (7) be charged, with a small amount of energy loss that reduces to bring because of the DC/DC conversion, thereby the electric energy with wind-driven generator (1) output is filled in the storage battery (7) to greatest extent, otherwise repeat above step, storage battery (7) is carried out pulse charging, until wind-driven generator (1) power output is just opened switching circuit (4) when enough large.
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| CN 201110065087 CN102176630B (en) | 2011-03-18 | 2011-03-18 | Charging method by raising instantaneous power for wind power generation system |
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| CN102176630B true CN102176630B (en) | 2013-04-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103036284B (en) * | 2012-12-07 | 2016-01-13 | 陕西千山航空电子有限责任公司 | A kind of aviation onboard recorder independent current source |
| CN103078385A (en) * | 2013-02-21 | 2013-05-01 | 云南晶盘科技有限公司 | Capacitive energy-storing weak power tracking control charging method for wind and light complement system |
| CN104348389B (en) * | 2013-08-07 | 2018-08-28 | 广州市香港科大***研究院 | Wind power generation controller |
| CN108933500B (en) * | 2017-05-23 | 2020-06-02 | 东洋合成股份有限公司 | Wind power generation device capable of achieving low rotating speed and high electric energy |
| CN112791342B (en) * | 2021-02-04 | 2023-06-20 | 舒华体育股份有限公司 | Outdoor resistance trainer control circuit and control method |
| CN113206525A (en) * | 2021-05-06 | 2021-08-03 | 秦佳电气有限公司 | Electric power energy storage control assembly |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101325344A (en) * | 2008-07-18 | 2008-12-17 | 徐剑雄 | Low wind velocity charging controller for minitype wind power generator |
| CN101702532A (en) * | 2009-11-26 | 2010-05-05 | 芜湖国睿兆伏电子股份有限公司 | Charge controller of wind turbine generator and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH11262187A (en) * | 1998-03-09 | 1999-09-24 | Hitachi Ltd | Controller of power storage system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101325344A (en) * | 2008-07-18 | 2008-12-17 | 徐剑雄 | Low wind velocity charging controller for minitype wind power generator |
| CN101702532A (en) * | 2009-11-26 | 2010-05-05 | 芜湖国睿兆伏电子股份有限公司 | Charge controller of wind turbine generator and control method thereof |
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| Title |
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| JP特开平11-262187A 1999.09.24 |
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