CN202939532U - Tracing control device of maximum power point of solar battery panel - Google Patents
Tracing control device of maximum power point of solar battery panel Download PDFInfo
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- CN202939532U CN202939532U CN2012206821713U CN201220682171U CN202939532U CN 202939532 U CN202939532 U CN 202939532U CN 2012206821713 U CN2012206821713 U CN 2012206821713U CN 201220682171 U CN201220682171 U CN 201220682171U CN 202939532 U CN202939532 U CN 202939532U
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- 230000005669 field effect Effects 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000002955 isolation Methods 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000008054 signal transmission 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
- 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 utility model relates to a tracing control device of a maximum power point of a solar battery panel. The tracing control device comprises a control circuit and a direct current voltage change circuit. The control circuit comprises a microcontroller LPC2478 and a direct current voltage current sampling circuit. The direct current voltage change circuit comprises a boosted circuit and an electromagnetic isolating drive circuit. The direct current voltage current sampling circuit is connected with a solar battery array, and an output end of the direct current voltage current sampling circuit is connected with the microcontroller LPC2478 which is connected with the boosted circuit of the electromagnetic isolating drive circuit. The boosted circuit is connected with a load, and comprises an insulated gate field-effect pipe. The tracing control device greatly improves tracing efficiency.
Description
Technical field
The utility model relates to a kind of solar panel MPPT maximum power point tracking control device, belongs to the photovoltaic power generation technology field.
Background technology
Along with the minimizing day by day of primary energy and the aggravation increasingly of environmental pollution, the whole world is all invested regenerative resource to sight.Sun power has the advantages such as widely distributed, renewable, pollution-free as the reproducible energy, and wherein photovoltaic generation becomes the focus of concern with its unique advantage.
Because the peak power output of photovoltaic cell is nonlinear characteristic, change along with the variation of external environment; The conversion efficiency of battery itself is low again, and the photoelectric transformation efficiency of general polycrystalline silicon solar cell is only 12%-14%, for the power stage of realizing photovoltaic generating system maximizes, need to follow the tracks of the Maximum Power Output point of photovoltaic cell.The control of MPPT maximum power point tracking is by controlling the output of solar battery array terminal voltage, array can intelligently being controlled, Maximum Power Output under different temperatures and illumination.
For improving the solar panel photoelectric transformation efficiency, Chinese scholars has proposed multiple maximum power point tracing method.Make the solar panel all the time can Maximum Power Output, must change its load that connects in good time.In general electrical equipment linear system, when the resistance of load equated with the internal resistance of electric power system, the power that obtains in load was maximum.For solar cell power system, the internal resistance of solar battery array is subject to the impact of the factors such as intensity of sunshine, environment temperature and load, so the internal resistance of cell and output characteristics are constantly to change.Tradition peak power output device can only be controlled near solar panel concussion work maximum power point, and tracking efficient is not high.
The utility model content
In order to solve the deficiencies in the prior art, the utility model provides a kind of solar panel MPPT maximum power point tracking control device, and this device has improved tracking efficient greatly.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
Solar panel MPPT maximum power point tracking control device comprises control circuit and DC voltage conversion circuit, and described control circuit comprises microcontroller LPC2478 and dc voltage and current sample circuit; Described DC voltage conversion circuit comprises booster circuit and electromagnetic isolation driving circuit; Described dc voltage and current sample circuit is connected with solar battery array, and the output terminal of dc voltage and current sample circuit connects microcontroller LPC2478; Microcontroller LPC2478 is connected with booster circuit by the electromagnetic isolation driving circuit; Described booster circuit is connected with load; Comprise insulating gate type field effect tube in described booster circuit.
Further, described control circuit also comprises crystal oscillating circuit, power circuit and the debug circuit that is connected with microcontroller LPC2478.
Adopt the beneficial effect of technique scheme to be:
The switching tube on-state rate of field effect transistor in controller circuitry Signal Regulation DC voltage conversion circuit, change the size of the output equivalent load of solar panel, make the big or small identical of equivalent load and the corresponding load of maximum power point, and then it is constant on maximum power point to control the output power of solar panel under varying environment.
Description of drawings
Fig. 1 is a kind of solar panel MPPT maximum power point tracking control device structured flowchart.
Embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are elaborated.
Solar panel MPPT maximum power point tracking control device is comprised of control circuit and DC voltage conversion circuit, and control circuit comprises controller circuitry, crystal oscillating circuit, power circuit, dc voltage and current sample circuit, debug circuit.DC voltage conversion circuit comprises booster circuit and electromagnetic isolation driving circuit.
The dc voltage and current sample circuit is for detection of output voltage and the output current of solar battery array (photovoltaic cell), and the analog signal transmission that sampling is obtained is to controller LPC2478.
Extraneous environmental factor changed in one day, and the output characteristics of photovoltaic array also changes thereupon.Control circuit middle controller LPC2478 is converted into digital signal with the simulating signal that the dc voltage and current sample circuit collects, and process, according to result, the value of pulse width modulation controlled register in controller is set, produce the square-wave signal of different frequency and dutycycle, control DC voltage conversion circuit.
The control signal of controller chip LPC2478 output is used for controlling the duty of boost conversion circuit after via the electromagnetic isolation driving circuit.Adopt electromagnetic isolation formula driving circuit, prevent that the forceful electric power signal from exerting an influence to weak electric signal, guarantee the security of system reliability service, realize the electrical isolation that driving circuit and main circuit are good.
Insulating gate type field effect tube constantly conducting and cut-off under the control of control signal in booster circuit, thereby change the size of solar panel output equivalent load, make the big or small identical of equivalent load and the corresponding load of maximum power point, come the stable output of regulating cell plate voltage on maximum power point, realize the tracking of solar panel maximum power point.
During less than voltage corresponding to maximum power point, along with the decline of array output voltage, the output power of battery reduces when the operating voltage of array; During greater than maximum power point voltage, along with the rising of array output voltage, the output power of battery reduces when the operating voltage of array.
In system when operation,, control circuit gathers the voltage and current of solar panel and processes, and produces frequency and the changing pulse signal of dutycycle as control signal; DC voltage conversion circuit is arranged between solar panel and load.When control signal is low level, the cut-off of the insulating gate type field effect tube of DC voltage conversion circuit, during for high level, the insulating gate type field effect tube conducting; Control signal is by the on-state rate of the insulating gate type field effect tube of adjusting DC voltage conversion circuit, change the size of the output equivalent load of solar panel, make the big or small identical of equivalent load and the corresponding load of maximum power point, solar panel can stably be operated on maximum power point under different temperatures and illumination.
Claims (2)
1. solar panel MPPT maximum power point tracking control device, it is characterized in that: comprise control circuit and DC voltage conversion circuit, described control circuit comprises microcontroller LPC2478 and dc voltage and current sample circuit; Described DC voltage conversion circuit comprises booster circuit and electromagnetic isolation driving circuit; Described dc voltage and current sample circuit is connected with solar battery array, and the output terminal of dc voltage and current sample circuit connects microcontroller LPC2478; Microcontroller LPC2478 is connected with booster circuit by the electromagnetic isolation driving circuit; Described booster circuit is connected with load, comprises insulating gate type field effect tube in this booster circuit.
2. solar panel MPPT maximum power point tracking control device according to claim 1, it is characterized in that: described control circuit also comprises crystal oscillating circuit, power circuit and the debug circuit that is connected with microcontroller LPC2478.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206821713U CN202939532U (en) | 2012-12-11 | 2012-12-11 | Tracing control device of maximum power point of solar battery panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206821713U CN202939532U (en) | 2012-12-11 | 2012-12-11 | Tracing control device of maximum power point of solar battery panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202939532U true CN202939532U (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206821713U Expired - Fee Related CN202939532U (en) | 2012-12-11 | 2012-12-11 | Tracing control device of maximum power point of solar battery panel |
Country Status (1)
| Country | Link |
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| CN (1) | CN202939532U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110498049A (en) * | 2019-08-23 | 2019-11-26 | 天津津航计算技术研究所 | A kind of power optimization control method applied to the anti-deicing of aviation electric heating |
-
2012
- 2012-12-11 CN CN2012206821713U patent/CN202939532U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110498049A (en) * | 2019-08-23 | 2019-11-26 | 天津津航计算技术研究所 | A kind of power optimization control method applied to the anti-deicing of aviation electric heating |
| CN110498049B (en) * | 2019-08-23 | 2023-02-03 | 天津津航计算技术研究所 | Power optimization control method applied to aviation electric heating ice prevention and removal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20191211 |