CN201966666U - Maximum power output control device of solar-cell panel - Google Patents
Maximum power output control device of solar-cell panel Download PDFInfo
- Publication number
- CN201966666U CN201966666U CN2011201232879U CN201120123287U CN201966666U CN 201966666 U CN201966666 U CN 201966666U CN 2011201232879 U CN2011201232879 U CN 2011201232879U CN 201120123287 U CN201120123287 U CN 201120123287U CN 201966666 U CN201966666 U CN 201966666U
- Authority
- CN
- China
- Prior art keywords
- solar panel
- control device
- power output
- circuit
- output control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
Abstract
The utility model discloses a maximum power output control device of a solar-cell panel, which comprises a solar cell panel, a detection circuit, a DC-DC converter, a controller and a direct-current load, wherein the detection circuit is connected with the controller which is connected with the DC-DC converter. The device calculates and adjusts the duty ratio of the DC-DC converter and changes the absorbed power of the load through sampling the output power of the solar-cell panel in real time, so that the solar-cell panel outputs the maximum power all the time so as to realize the effective utilization of solar energy. The system has the advantages of high cost performance, convenience in design and maintenance, and stable and reliable working.
Description
Technical field
The utility model relates to the solar-energy photo-voltaic cell control technology, particularly a kind of solar panel peak power output control device.
Background technology
Along with becoming increasingly conspicuous of energy problem and environmental problem, more and more come into one's own as the solar energy of clean energy resource.In recent years, the research of solar energy power generating and application have had the growth of advancing by leaps and bounds, and become one of research focus of new forms of energy.The restriction solar photovoltaic generation system further develops factor and mainly contains the manufacturing cost of Gao Mao and lower conversion efficiency at present.As everyone knows, there is a peak power output point in solar panel, for effectively utilizing solar energy, must carry out MPPT maximum power point tracking to solar panel, and promptly under different temperatures and illumination condition, solar panel all the time can Maximum Power Output.
There has been solar panel maximum power control device in existing market, and great majority adopt the analog circuit structure to form, and this class control device though price is comparatively cheap, but is realized comparatively complexity, and there is certain challenge in reliability; And a kind of control device generally can only realize a kind of simple track algorithm, for example constant voltage process, and its tracking effect is relatively poor.The peak power output track algorithm has presented precision, complicated trend at present, and for example fuzzy control method, neural net method adopt analog control device to be difficult to realize so complicated track algorithm; And be updated to another track algorithm by a kind of track algorithm and for analogue system, often mean redesign.Along with the continuous development of microelectric technique and integrated circuit fabrication process, the price of electronic device has had and has declined to a great extent, and is that the embedded digital system of core realizes that the control of solar panel peak power output seems efficient more economically with the microprocessor.
Summary of the invention
At the deficiencies in the prior art, technical problem to be solved in the utility model provides a kind of peak power output control device based on microprocessor, this device can be used for solar panel peak power output tracking Control, to realize the effective utilization to solar energy.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of solar panel peak power output control device is characterized in that it comprises: solar panel, testing circuit, DC-DC converter, controller, DC load, described testing circuit links to each other with described controller, and described controller links to each other with described DC-DC converter.
Preferably, described solar panel links to each other with described testing circuit.
Preferably, described testing circuit comprises a current sensor, a voltage conversion circuit, a modulus conversion chip.
Preferably, described DC-DC translation circuit is booster circuit (Boost), and it comprises a switching tube, an energy storage inductor, a diode, a filter capacitor.
Preferably, described DC load comprises a storage battery, a led array; Storage battery is connected with the DC-DC converter output terminal, also is connected with led array with the voltage stabilizing circuit input.
Preferably, described controller is a singlechip chip.
Preferably, described controller links to each other with described DC-DC converter by driving buffer circuit; Described controller also links to each other with voltage stabilizing circuit; Described controller also links to each other with display unit; Described controller also links to each other with online programmable module (ISP).
Technique scheme has following beneficial effect: this scheme can be implemented under different light and the temperature conditions, and solar panel all the time can Maximum Power Output, realizes effective utilization of solar energy.System adopts microprocessor to realize, makes that design and maintenance are all very convenient, and particularly system supports the ISP download function, and making just can the implementation algorithm renewal without the plug chip.Owing to adopt Design of Digital Circuit, reliability, stability also have raising by a relatively large margin.System has the cost performance height in a word, and design maintenance is convenient, the stable and reliable operation advantage.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the utility model example structure schematic diagram.
Fig. 2 is the utility model embodiment DC-DC converter and load circuit figure.
Fig. 3 is the utility model embodiment testing circuit figure.
Fig. 4 drives buffer circuit figure for the utility model embodiment.
Fig. 5 is the utility model embodiment voltage stabilizing circuit figure.
Fig. 6 is the utility model embodiment conductance increment method flow chart.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail.
As shown in Figure 1, a kind of solar panel peak power output of the utility model control device comprises: 1 solar panel, 2DC-DC converter, 3 DC load, 4 testing circuits, 5 drive buffer circuit, 6 voltage stabilizing circuits, the 7ISP download circuit, 8 controllers, 9 display unit.Solar panel links to each other with the DC-DC converter, and the DC-DC converter links to each other with DC load.Solar panel circuit after testing links to each other with controller, and controller links to each other with the DC-DC converter through driving buffer circuit.Storage battery links to each other with controller through voltage stabilizing circuit.Controller also links to each other with display unit, ISP download circuit.
Solar panel absorbs sunlight and is converted into electric energy, provide electric energy through the DC-DC converter to load, for guaranteeing that solar panel all the time can Maximum Power Output, testing circuit constantly detects the magnitude of voltage and the current value of solar panel in real time, and calculate power, according to the built-in control algolithm of controller, calculate and adjust duty cycle signals next time, form pwm signal through driving buffer circuit, send the DC-DC converter to carry out, to change the equivalent resistance of load, itself and solar panel internal resistance are complementary, to guarantee the solar panel Maximum Power Output.
As shown in Figure 2, the utility model embodiment DC-DC converter is boost type (Boost) translation circuit, and it comprises that a switch S, a diode D1, an energy storage inductor L1 and a filter capacitor C4 form.When the switch S conducting, power supply is to the inductance storage power, and inductive current increases, and diode ends, and electric capacity powers to the load.When switch S was ended, inductive current reduced, and released energy, because inductive current can not suddenly change, produced induced electromotive force, forced diode current flow, and powered to the load through diode with power supply, and to the electric capacity charging, output voltage is greater than input voltage simultaneously.This converter is applicable to the battery tension height and the low situation of photovoltaic output voltage.
As shown in Figure 2, solar panel institute bringing onto load comprises a storage battery and a led array.Add storage battery and be used for storage of electrical energy, so that utilize at any time; Select led array as its DC load, it is resistive to consider that mainly it presents, and can reflect the variation of load absorbed power intuitively.It is anti-recoil to add a diode D2 between storage battery and DC load, adds a switch S 1 and is convenient to system's control.
As shown in Figure 3, the testing circuit of the utility model embodiment comprises: a current sensor, a voltage ratio translation circuit, an AD conversion chip.For detecting solar cell panel voltages signal and current signal in real time, need at first current signal to be converted to voltage signal through current sensor.Again magnitude of voltage after the current conversion and solar array voltage signal are transformed to the scope that the AD conversion chip can receive through the voltage ratio translation circuit afterwards, send AD conversion chip TLC2543 passage 0 and passage 1 respectively, after the AD conversion chip is converted to digital signal with solar panel current signal and voltage signal, send single-chip microcomputer.What data communication was adopted between TLC2543 and the single-chip microcomputer is the mode of serial communication, as long as carry out the connection of four signal line, is respectively chip selection signal CS, clock signal clk, and data shift out Dout, and data move into Din.
As shown in Figure 4, the utility model embodiment drives buffer circuit and comprises drive circuit and buffer circuit.The single-chip processor i/o port is sent signal and is connect the base stage that drives triode Q1 through resistance R 6, and the collector electrode of the triode of Q1 meets power supply VCC through resistance R 7, the direct ground connection of the emitter of Q1.Drive signal after amplifying as the input of photoelectric isolating circuit.Photoelectric isolating circuit is made up of optical isolation U2 and current-limiting resistance R8, R9, and optical isolation output signal PWM modulation signal is as the control signal of DC-DC converter switches pipe S.
As shown in Figure 5, the utility model embodiment voltage stabilizing circuit comprises: voltage stabilizing chip 7805, counnter attack fill diode D3, D4, input side filter capacitor C5, C6, and wherein C5 is an electrochemical capacitor, outlet side filter capacitor C7, C8, C9 wherein C8 are electrochemical capacitor.Controller power source is provided by storage battery, because battery tension is stable inadequately and with the Single Chip Microcomputer (SCM) system supply voltage certain difference is arranged, so will adopt 7805 voltage stabilizing chips to carry out voltage stabilizing, guarantees that its output voltage can use for digital system.For guaranteeing voltage regulation result and making output voltage have better stability, so the input and the output of voltage stabilizing chip all carried out filtering.The 5V direct current of voltage stabilizing output provides power supply for controller and coupled ISP download circuit, display unit.
The controller of the utility model embodiment is a single-chip microcomputer, and chip is selected AT89S52.For making single-chip microcomputer work, need set up single-chip minimum system, select control comprising clock circuit, reset circuit, inside and outside program storage.Controller provides power supply by voltage stabilizing circuit, links to each other with testing circuit to receive voltage and current signal, and linking to each other with drive circuit provides duty cycle control signal.Be the display control unit real time information, this controller also need connect display unit; For can onlinely downloading, this controller also need connect the ISP download circuit.
Display unit is total to positive charactron by four to be formed, and its stage casing selects data wire directly to link to each other with one group of I/O port of single-chip microcomputer, and the position selects data wire to link to each other through one group of I/O port of chip for driving ULN2003A and monolithic.The mode that shows control employing scan round is carried out, and promptly lights one digit number sign indicating number pipe one by one, and switches at a high speed, because the vision of human eye stops characteristic, it is looked seem four digital steady display simultaneously.
The ISP download circuit is for realizing that controller need not take off chip and get final product the online function that downloads.The ISP download circuit is actually the relevant pin of single-chip microcomputer is connected to the ISP download interface, mainly contains MOSI, SCK, RESET, MISO, VCC, six signals of GND.During use the ISP download interface is connect the programmable device of support ISP function, and move related software and can finish download function, this function extremely is convenient to the control algolithm renewal, the system maintenance upgrading.
What as shown in Figure 6, the utility model solar panel peak power output control algolithm adopted is the conductance increment method.U among the figure
n, I
nBe this sampled value, U
N-1, I
N-1Be last sampled value, dU=0, dI=0 condition are come condition instead of 0 through a little threshold value commonly used in actual use.
The conductance increment method is to decide the direction of reference voltage variation by the size of variable quantity that compares output conductance and instantaneous electric conductivity value.Position relation according to working point and maximum power point, make a concrete analysis of as follows: when (1) supposes that the working point of current photovoltaic array is positioned at the left side of maximum power point, have this moment dP/dU＞0 be dI/dU＞-I/U, description references voltage should change towards the direction that increases.(2) in like manner, when the working point of supposing current photovoltaic array is positioned at the right side of maximum power point, dP/dU＜0 there is this moment, dI/dU＜-I/U, description references voltage should change towards the direction that reduces.(3) working point of supposing current photovoltaic array be positioned at the maximum power point place (near), will have dP/dU=0 this moment, reference voltage will remain unchanged this moment, also be that photovoltaic array is operated on the maximum power point.
More than a kind of solar energy peak power output control device that the utility model embodiment is provided be described in detail; for one of ordinary skill in the art; thought according to the utility model embodiment; part in specific embodiments and applications all can change; in sum; this description should not be construed as the restriction to utility model, and all any changes of being made according to the utility model design philosophy all have within the novel protection range in this reality.
Claims (7)
1. a solar panel peak power output control device is characterized in that it comprises: solar panel, testing circuit, DC-DC converter, controller, DC load; Described testing circuit links to each other with described controller, and described controller links to each other with described DC-DC converter.
2. solar panel peak power output control device according to claim 1 is characterized in that described testing circuit links to each other with described solar panel.
3. solar panel peak power output control device according to claim 2 is characterized in that described testing circuit comprises, a current sensor, a voltage conversion circuit, a modulus conversion chip.
4. solar panel peak power output control device according to claim 1 is characterized in that described DC-DC translation circuit is booster circuit (Boost), and it comprises a switching tube, an energy storage inductor, a diode, a filter capacitor.
5. solar panel peak power output control device according to claim 1 is characterized in that described DC load comprises a storage battery, a led array; Storage battery is connected with the DC-DC converter output terminal, also is connected with led array with the voltage stabilizing circuit input.
6. solar panel peak power output control device according to claim 1 is characterized in that described controller is a singlechip chip.
7. solar panel peak power output control device according to claim 1 is characterized in that, described controller links to each other with described DC-DC converter by driving buffer circuit; Described controller also links to each other with voltage stabilizing circuit; Described controller also links to each other with display unit; Described controller also links to each other with online programmable module (ISP).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201232879U CN201966666U (en) | 2011-04-25 | 2011-04-25 | Maximum power output control device of solar-cell panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201232879U CN201966666U (en) | 2011-04-25 | 2011-04-25 | Maximum power output control device of solar-cell panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201966666U true CN201966666U (en) | 2011-09-07 |
Family
ID=44529219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201232879U Expired - Fee Related CN201966666U (en) | 2011-04-25 | 2011-04-25 | Maximum power output control device of solar-cell panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201966666U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103213485A (en) * | 2013-04-26 | 2013-07-24 | 苏州大学 | Automobile automatic sun-shading device |
| CN104779902A (en) * | 2015-05-12 | 2015-07-15 | 长沙金定信息技术有限公司 | Solar energy power module |
| CN105314779A (en) * | 2015-12-10 | 2016-02-10 | 青海荷洁纳米材料科技有限公司 | RO (reverse-osmosis) membrane depth water purifier driven by independent photovoltaic system |
| CN105951638A (en) * | 2016-05-09 | 2016-09-21 | 无锡昊瑜节能环保设备有限公司 | Road guardrail based on lighting control mechanism |
| CN108227821A (en) * | 2018-01-11 | 2018-06-29 | 江玉腾 | A kind of integrated circuit control system of photovoltaic generation |
-
2011
- 2011-04-25 CN CN2011201232879U patent/CN201966666U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103213485A (en) * | 2013-04-26 | 2013-07-24 | 苏州大学 | Automobile automatic sun-shading device |
| CN104779902A (en) * | 2015-05-12 | 2015-07-15 | 长沙金定信息技术有限公司 | Solar energy power module |
| CN105314779A (en) * | 2015-12-10 | 2016-02-10 | 青海荷洁纳米材料科技有限公司 | RO (reverse-osmosis) membrane depth water purifier driven by independent photovoltaic system |
| CN105951638A (en) * | 2016-05-09 | 2016-09-21 | 无锡昊瑜节能环保设备有限公司 | Road guardrail based on lighting control mechanism |
| CN108227821A (en) * | 2018-01-11 | 2018-06-29 | 江玉腾 | A kind of integrated circuit control system of photovoltaic generation |
| CN108227821B (en) * | 2018-01-11 | 2019-04-19 | 江玉腾 | A kind of integrated circuit control system of photovoltaic power generation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102904444B (en) | DC/DC (direct-current/direct-current) conversion and control system based on proton exchange membrane fuel cell | |
| CN201966666U (en) | Maximum power output control device of solar-cell panel | |
| CN102780398B (en) | Intelligent component optimizer for solar photovoltaic cell panel and control method thereof | |
| CN103840529B (en) | The solar charging/discharging control system controlled based on ARM and control method | |
| CN102315799A (en) | DSP-based MPPT control method of solar energy photovoltaic grid-connected inverter | |
| CN103096562A (en) | Solar light emitting diode (LED) lighting driving system based on numerical control | |
| CN103219765B (en) | Photovoltaic charging controller | |
| CN201869400U (en) | LED (light-emitting diode) lamp drive circuit | |
| CN201336579Y (en) | Photovoltaic accumulator charging controller with weak-light charging function | |
| CN206100534U (en) | Utilize photovoltaic MPPT power supply system's LED controlling means | |
| CN103219912A (en) | Control method suitable for universal input voltage buck-boost grid-connected inverter | |
| CN202310206U (en) | Control circuit of ultra-low-power single wire power supply touch switch | |
| CN108899987A (en) | A kind of solar charging electric control circuit with MPPT function | |
| Muniraj et al. | Design and Evaluation of MPPT Based Two Stage Battery Charging Scheme For A Solar PV Lighting System | |
| CN104898753A (en) | Serial-connected solar energy cell current match circuit and control method | |
| CN104242812A (en) | Single-chip microcomputer based solar power controller | |
| CN204986823U (en) | High effective solar street light | |
| CN204391848U (en) | A kind of solar charging controller for electric consumption | |
| Ling et al. | Development of photovoltaic hybrid LED street lighting system | |
| CN107154730B (en) | A kind of generation of electricity by new energy two-way changing circuit and control method | |
| CN109088472A (en) | One kind being based on MPPT photovoltaic semiconductors laser luminescent system | |
| CN203617772U (en) | Photovoltaic charging circuit having maximum power point synchronous tracking function | |
| CN203537625U (en) | Solar semiconductor illumination system | |
| CN106849177A (en) | A kind of buck-boost grid-connected inverter | |
| CN202190117U (en) | High-power wind energy and solar energy complementary power generation control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20120425 |