CN1866668A - Wind energy and solar energy power generation control inversion method and integrated power supply - Google Patents
Wind energy and solar energy power generation control inversion method and integrated power supply Download PDFInfo
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- CN1866668A CN1866668A CNA2006100858855A CN200610085885A CN1866668A CN 1866668 A CN1866668 A CN 1866668A CN A2006100858855 A CNA2006100858855 A CN A2006100858855A CN 200610085885 A CN200610085885 A CN 200610085885A CN 1866668 A CN1866668 A CN 1866668A
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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
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The invention discloses a wind energy and solar generating control contravariant method and integral power, which comprises the following parts: charging main circuit, contravariant main circuit, control circuit, detecting circuit and auxiliary power, wherein the charging main circuit is composed of fan commutation circuit, photovoltaic battery anti-reflection circuit and unloading circuit; the contravariant main circuit adopts all-bridge structure as topology, whose driving part contains unloading driving and contravariant driving; the detecting circuit contains accumulator voltage detection, AC output voltage detection, current detection, temperature detection and contravariant switch signal detection. The invention possesses pure sine contravariant and pressure-limiting charging function, which contains completely protective function.
Description
Technical field
The present invention relates to a kind of wind energy, solar power generation control inversion integrated power supply.
Background technology
At present, the solar energy of China, the live part of wind power generation system mainly are direct unloadings, promptly after storage battery reaches certain pressure point that overcharges, just disconnect charging circuit.Like this, be provided with highly if overcharge, then high voltage can cause damage to storage battery.If overcharge be provided with the end, then wind energy, solar energy are not fully utilized.In addition, present low-cost inverter output waveform is a square wave, and very big harmonic wave is arranged, and carrying load ability is very poor.
Summary of the invention
The wind energy, the solar power generation control inversion integrated power supply that the purpose of this invention is to provide a kind of high performance-price ratio.Function with pure sinusoid inversion and pressure limiting charging.System can carry out intelligent pulse width modulation controlled to the power tube of charging unloading circuit according to the energy demand of storage battery pressure limiting charging, storage battery is carried out the pressure limiting charging, thereby realize the maximum utilization of wind energy, solar energy and effectively protect storage battery.Simultaneously, for the inversion part, the present invention adopts single-chip microcomputer as kernel control chip, adopts two half-bridge driven chips that the full-bridge main circuit is carried out non-isolation and directly drives, thereby realize high performance sinusoidal wave inversion with very low cost.
Technical scheme of the present invention is as follows:
Wind energy, solar power generation control inverse method is characterized in that the AC energy of wind-driven generator output is become direct current by rectification circuit, receives on the storage battery jointly with the direct current of photovoltaic cell then and charges, the live road of unloading, storage battery two ends.When solar energy, wind energy surpass the required electric energy of storage battery and load, adopt the pulse-width modulation unloading.With the pressure limiting charge characteristic of guaranteeing that storage battery is good, rather than energy all unloaded.In the inversion part, produce sinewave modulation signal and finish various controlled function by single-chip microcomputer, by the two non-isolation drive full-bridge inverting of half-bridge driven chip main circuits.
Wind energy, solar power generation control inversion integrated power supply is characterized in that being made up of charging main circuit, full bridge inverter, control circuit, testing circuit and accessory power supply; The charging main circuit comprises: the output of wind-driven generator inserts the wind power generation rectification circuit, the positive pole of storage battery links to each other with the positive pole of the output of wind power generation rectification circuit and the positive pole of solar panel behind the counnter attack diode, and the negative pole of storage battery links to each other by air switch with the negative pole of the output of wind power generation rectification circuit and the negative pole of solar panel; The source electrode of unloading power tube is connected to the negative pole of storage battery by air switch, the drain electrode of unloading power tube links to each other with unloading resistance, the other end of unloading resistance is connected to the positive pole of wind power generation rectification output, is connected a diode between the positive pole of wind power generation rectification and battery positive voltage; Inverter main circuit comprises: the positive pole of storage battery, negative pole insert full bridge inverter, the interchange output of full bridge inverter insert that transformer boosts and lc circuit filtering after, connect user load; Control circuit comprises: adopt single-chip microcomputer as kernel control chip, single-chip microcomputer inserts the chip for driving of full bridge inverter, the chip for driving of unloading power tube; Testing circuit comprises: an AD conversion mouth that inserts single-chip microcomputer after accumulator DC presses sampled point to connect divider resistance, after the ac output voltage sampled point inserts the transformer isolation step-down, receive an AD conversion mouth of single-chip microcomputer again, series resistance on dc bus, the electric current that resistance detection arrives is through two operational amplifiers, one of them operational amplifier output signal is to an AD conversion mouth of single-chip microcomputer, and the pin of single-chip microcomputer is received in another operational amplifier output.
There is thermistor to insert an AD conversion mouth of single-chip microcomputer.
Adopt the PIC18F2331 single-chip microcomputer as kernel control chip, single-chip microcomputer inserts the IR2110 chip as the full bridge inverter chip for driving, insert the chip for driving of TLP250 chip as the unloading power tube, the PWM mouth of two groups of complementations of single-chip microcomputer PIC18F2331 inserts two inverter bridge back ofs the body that two chip for driving IR2110 drive full bridge rectifier respectively.
Content of the present invention is to adopt novel charging main circuit structure, simultaneously with the PIC18F2331 single-chip microcomputer as the control core, for the inversion part, produce the sinusoidal pulse width modulation signal by single-chip microcomputer, by two IR2110 chip for driving the full-bridge main circuit is carried out sinusoidal pulse width modulation, wave circuit generates pure sinewave output after filtration then.
The AC energy of wind-driven generator output becomes direct current by rectification circuit, then with the direct current of photovoltaic cell jointly to charge in batteries.When solar energy, wind energy surpassed the required electric energy of storage battery and load, the unloading circuit of being made up of unloading power switch pipe and unloading resistance then can discharge unnecessary energy, with the pressure limiting charge characteristic of assurance storage battery.The direct current of storage battery is transformed into the 220V pure sine wave alternating current that uses for user load after by the full-bridge circuit inversion.Duplex sky in the main circuit is opened and can be carried out switch control to whole system, and simultaneously, when reverse connection of accumulator, air switch can move immediately because of big electric current and disconnect, thereby has avoided the damage of storage battery and power-supply system.
Control core single-chip microcomputer PIC18F2331 carries out Based Intelligent Control according to the direct voltage, electric current, interchange feedback voltage, temperature and the inverse switch signal that detect to system, to guarantee to stablize good pressure limiting charging and pure sine wave output.Single-chip microcomputer is according to the duty ratio of detected battery tension real-time regulated unloader signal, and unloader signal is carried out duty cycle adjustment by light-coupled isolation chip for driving TLP250 to the unloading power tube, with the pressure limiting charge characteristic of guaranteeing that storage battery is good.
Because battery tension and AC load fluctuation can cause the fluctuation of output voltage, so, native system adopts transformer the signal feedback of ac output voltage to be arrived the AD conversion mouth of single-chip microcomputer, single-chip microcomputer is understood the pulsewidth according to the voltage signal real-time regulated SPWM that samples, thereby guarantees the stability of output voltage.Accessory power supply provides 24V to control system, 12V, the 12V voltage of 5V and isolation.
System of the present invention has perfect defencive functions such as overvoltage, under-voltage, overload, overheated, short circuit, reversal connection, and that whole system has is reliable and stable, superior performance and advantage with low cost.
Description of drawings
Fig. 1 is an inversion control FB(flow block) of the present invention.
Fig. 2 is the present invention main circuit structure figure that charges.
Fig. 3 is a full bridge inverter structure chart of the present invention.
Fig. 4 is control circuit of the present invention and testing circuit structure chart.
Embodiment
Referring to accompanying drawing.
1, charging main circuit (Fig. 1, Fig. 2)
The output of wind-driven generator is connected to U, V, three terminal (if single-phase generators of W, then be connected to wherein two terminals), positive pole after the output rectification of wind-driven generator is with after the counnter attack diode D7 negative electrode of solar cell links to each other, be connected to the anode of the counnter attack diode D9 of whole charging circuit, the negative electrode of D9 is connected to the positive pole of storage battery.Anode after the output rectification of wind-driven generator is connected to 2 extremely empty 2 pin of opening with after the negative pole of solar panel links to each other.The source electrode of unloading power tube is connected to 1 pin that sky is opened.3 pin that sky is opened are connected to the negative pole of storage battery with after 4 pin link to each other.The charging main circuit diagram as shown in Figure 2.During operate as normal, sky switches on, and when storage battery during less than its floating charge pressure point V1, electric energy and solar energy after the output rectification of wind-driven generator all charge a battery.Not conducting of unloading field effect transistor Q1, promptly unloading circuit is not worked.When storage battery reached the floating charge pressure point, control circuit just carried out pulse-width modulation to the unloading field effect transistor, makes the charging voltage of storage battery be no more than the floating charge pressure point, thereby guarantees good charge characteristic.If reverse connection of accumulator will produce powerful short circuit current by D8, D9 and empty opening, sky is had a change meeting and is disconnected immediately, with protection storage battery and system.
2, inverter main circuit
The topology of inverter main circuit adopts full bridge structure.The direct current of storage battery is transformed into sinusoidal pulsewidth sequence behind full-bridge inverting, through transformer boost and lc circuit filtering after, become 220 pure sine wave alternating currents and use for user load.Wherein R1 is a current sense resistor.Absorbing capacitor C 3 directly is connected on two buses of inversion full-bridge.The schematic diagram of inverter main circuit as shown in Figure 3.
3, control circuit
Control circuit mainly comprises kernel control chip PIC18F2331, two inverse changing driving circuits that IR2110 constitutes, unloading drive circuit.
Wherein, PIC18F2331 is a Electric Machine Control special chip, is particularly suitable as the control chip of inverter.It has 8 road AD conversion mouth, is particularly suitable for being used for carrying out the detection thief hatch of various signals.In native system, the AD mouth is used for detecting direct voltage, alternating voltage, load current and temperature.Simultaneously, it has the complementary PWM delivery outlet of three road band dead bands control, and wherein one group produces complementary SPWM signal, and another group produces complementary 50Hz low frequency signal.Two groups of signals drive two inverter bridge back ofs the body by two chip for driving IR2110, can produce the SPWM waveform of 50Hz at the mid point of two groups of bridge back ofs the body.This SPWM waveform promptly is the 50Hz pure sine wave after Industrial Frequency Transformer is isolated amplification and filtering.The unloading drive circuit then adopts optical couple isolation drive circuit TLP250, and TLP250 is the chip for driving of special I GBT or MOSFET, and drive current can reach 2A.
4, testing circuit
Comprise the direct voltage testing circuit, ac output voltage feedback circuit, load current detection circuit, temperature sensing circuit and inverse switch testing circuit.
The detection of direct voltage is that direct voltage is adopted an AD conversion mouthful 0 of delivering to single-chip microcomputer behind the electric resistance partial pressure; Ac output voltage is delivered to an AD conversion mouthful 1 of single-chip microcomputer after by the transformer isolation step-down; The design adopts that series resistance detects electric current on dc bus, resistance detection to electric current deliver to the AD conversion mouthfuls 2 of single-chip microcomputer after amplifying through LM358, single-chip microcomputer judges whether overload according to the electric current that detects.The current signal of resistance detection compares by LM358 and reference signal, if be short-circuited, then compares back LM358 respective pins meeting output low level signal, and after this low level signal is delivered to single-chip microcomputer, single-chip microcomputer will cut out inversion.To with temperature detection, then adopt an AD conversion mouthfuls 3 of delivering to single-chip microcomputer after the thermistor sampling again, variation of temperature can cause the change in resistance of thermistor, thereby causes the change in voltage of AD conversion mouthfuls 3.Single-chip microcomputer judges whether to carry out overtemperature protection or recovers overtemperature protection according to detected voltage.System is by detecting from the next switching signal of inverse switch, and inverter switching device opens and shuts off in the decision control inverter integrated power supply.
Claims (4)
1, wind energy, solar power generation control inverse method, it is characterized in that the AC energy of wind-driven generator output is become direct current by rectification circuit, receive on the storage battery jointly with the direct current of photovoltaic cell then and charge, the live road of unloading, storage battery two ends. when solar energy, wind energy surpass the required electric energy of storage battery and load, employing pulse-width modulation unloading. with the pressure limiting charge characteristic of guaranteeing that storage battery is good, rather than energy all unloaded.In the inversion part, produce sinewave modulation signal and finish various controlled function by single-chip microcomputer, by the two non-isolation drive full-bridge inverting of half-bridge driven chip main circuits.
2, wind energy, solar power generation control inversion integrated power supply is characterized in that being made up of charging main circuit, full bridge inverter, control circuit, testing circuit and accessory power supply; The charging main circuit comprises: the output of wind-driven generator inserts the wind power generation rectification circuit, the positive pole of storage battery links to each other with the positive pole of the output of wind power generation rectification circuit and the positive pole of solar panel behind the counnter attack diode, and the negative pole of storage battery links to each other by air switch with the negative pole of the output of wind power generation rectification circuit and the negative pole of solar panel; The source electrode of unloading power tube is connected to the negative pole of storage battery by air switch, the drain electrode of unloading power tube links to each other with unloading resistance, the other end of unloading resistance is connected to the positive pole of wind power generation rectification output, is connected a diode between the positive pole of wind power generation rectification and battery positive voltage; Inverter main circuit comprises: the positive pole of storage battery, negative pole insert full bridge inverter, the interchange output of full bridge inverter insert that transformer boosts and lc circuit filtering after, connect user load; Control circuit comprises: adopt single-chip microcomputer as kernel control chip, single-chip microcomputer inserts the chip for driving of full bridge inverter, the chip for driving of unloading power tube; Testing circuit comprises: an AD conversion mouth that inserts single-chip microcomputer after accumulator DC presses sampled point to connect divider resistance, after the ac output voltage sampled point inserts the transformer isolation step-down, receive an AD conversion mouth of single-chip microcomputer again, series resistance on dc bus, the electric current that resistance detection arrives is through two operational amplifiers, one of them operational amplifier output signal is to an AD conversion mouth of single-chip microcomputer, and the pin of single-chip microcomputer is received in another operational amplifier output.
3, integrated power supply according to claim 3 is characterized in that having thermistor to insert an AD conversion mouth of single-chip microcomputer.
4, integrated power supply according to claim 3, it is characterized in that adopting the PIC18F2331 single-chip microcomputer as kernel control chip, single-chip microcomputer inserts the IR2110 chip as the full bridge inverter chip for driving, insert the chip for driving of TLP250 chip as the unloading power tube, the PWM mouth of two groups of complementations of single-chip microcomputer PIC18F2331 inserts two inverter bridge back ofs the body that two chip for driving IR2110 drive full bridge rectifier respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100858855A CN100492808C (en) | 2006-05-28 | 2006-05-28 | Wind energy and solar energy power generation control inversion integrated power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100858855A CN100492808C (en) | 2006-05-28 | 2006-05-28 | Wind energy and solar energy power generation control inversion integrated power supply |
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| CN1866668A true CN1866668A (en) | 2006-11-22 |
| CN100492808C CN100492808C (en) | 2009-05-27 |
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| CNB2006100858855A Expired - Fee Related CN100492808C (en) | 2006-05-28 | 2006-05-28 | Wind energy and solar energy power generation control inversion integrated power supply |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101924363A (en) * | 2010-08-31 | 2010-12-22 | 深圳拓邦股份有限公司 | Protection circuit for preventing misoperations and solar power generation system applying same |
| CN101599649B (en) * | 2009-04-21 | 2012-05-09 | 合肥工业大学 | Directly-driven wind power generation system and mode for modulating SPWM inversion control signal in system |
| CN101714770B (en) * | 2009-12-16 | 2013-10-02 | 中国科学院上海微系统与信息技术研究所 | Field high efficiency wind and solar generation system and method |
| CN107660027A (en) * | 2017-10-31 | 2018-02-02 | 北京晟顺普辉光电科技股份公司 | A kind of drive circuit of LEC cold light films |
| CN111327104A (en) * | 2020-02-28 | 2020-06-23 | 中兴能源有限公司 | Solar charging control circuit and method |
| CN114619886A (en) * | 2021-02-01 | 2022-06-14 | 长城汽车股份有限公司 | High-voltage discharge system, method and vehicle |
-
2006
- 2006-05-28 CN CNB2006100858855A patent/CN100492808C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101599649B (en) * | 2009-04-21 | 2012-05-09 | 合肥工业大学 | Directly-driven wind power generation system and mode for modulating SPWM inversion control signal in system |
| CN101714770B (en) * | 2009-12-16 | 2013-10-02 | 中国科学院上海微系统与信息技术研究所 | Field high efficiency wind and solar generation system and method |
| CN101924363A (en) * | 2010-08-31 | 2010-12-22 | 深圳拓邦股份有限公司 | Protection circuit for preventing misoperations and solar power generation system applying same |
| CN101924363B (en) * | 2010-08-31 | 2013-04-10 | 深圳拓邦股份有限公司 | Protection circuit for preventing misoperations and solar power generation system applying same |
| CN107660027A (en) * | 2017-10-31 | 2018-02-02 | 北京晟顺普辉光电科技股份公司 | A kind of drive circuit of LEC cold light films |
| CN111327104A (en) * | 2020-02-28 | 2020-06-23 | 中兴能源有限公司 | Solar charging control circuit and method |
| CN111327104B (en) * | 2020-02-28 | 2022-03-01 | 中兴能源有限公司 | Solar charging control circuit and method |
| CN114619886A (en) * | 2021-02-01 | 2022-06-14 | 长城汽车股份有限公司 | High-voltage discharge system, method and vehicle |
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| CN100492808C (en) | 2009-05-27 |
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