CN204557276U - The photovoltaic system of maximum power tracing - Google Patents
The photovoltaic system of maximum power tracing Download PDFInfo
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- CN204557276U CN204557276U CN201520184673.7U CN201520184673U CN204557276U CN 204557276 U CN204557276 U CN 204557276U CN 201520184673 U CN201520184673 U CN 201520184673U CN 204557276 U CN204557276 U CN 204557276U
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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 discloses a kind of photovoltaic system of maximum power tracing, comprise multiple photovoltaic module, each described photovoltaic module is connected with the input end of direct-current-alternating-current converter respectively by with DC-DC converter, the output terminal of described direct-current-alternating-current converter is connected with load, the output terminal of described load is connected with the input end of PWM control module by current sample feedback circuit, and the output terminal of described PWM control module is connected with the control input end of described DC-DC converter respectively.The utility model not only can realize maximal power tracing, to decrease power loss in the transfer to greatest extent, thus cuts down the number of intermediate links, and realizes maximizes power and utilizes.
Description
Technical field
The utility model relates to a kind of photovoltaic system of maximum power tracing.
Background technology
Recent regenerative resource receives publicity gradually, makes the research of decentralized power supply (such as photovoltaic (PV) battery, fuel cell, Vehicular battery etc.) more and more many.Under the many factors of consideration (such as voltage/current demand, operating conditions, fiduciary level, security, cost etc.), considerable topology framework is also had to be suggested in order to these decentralized power supplies are connected to load.These distributing direct supplys can only provide low-voltage output mostly.
At present, solar maximum power tracking control unit is the upgraded product of traditional solar charging/discharging controller.So-called MPPT maximum power point tracking, namely refers to that controller can the generating voltage of detecting real-time solar panels, and follows the trail of ceiling voltage current value, make system with the highest efficiency to charge in batteries.But for traditional controller, charge parameter all just set before dispatching from the factory, in other words, the maximum power points in controller meeting real-time follow-up solar panels, has given play to the maximum effect of solar panels.Voltage is higher, by maximal power tracing, just can export more electricity, thus improves charge efficiency.
Theoretically, use the solar power system of maximal power tracing controller can improve 50% than traditional efficiency, but with border test factually, due to surrounding environment influence and various energy loss, final efficiency can only improve 20%-30%.And when bearing power reduces, also need will to be stored into accumulator very much by photovoltaic module, and then be supplied to by accumulator responsible, so greatly drip and add power loss in the transfer, thus add intermediate link, make power application efficiency to reduce much very much.
Utility model content
The utility model object is the photovoltaic system that the defect existed for prior art provides a kind of maximum power tracing.
The utility model for achieving the above object, adopt following technical scheme: a kind of photovoltaic system of maximum power tracing, comprise multiple photovoltaic module, each described photovoltaic module is connected with the input end of direct-current-alternating-current converter respectively by with DC-DC converter, the output terminal of described direct-current-alternating-current converter is connected with load, the output terminal of described load is connected with the input end of PWM control module by current sample feedback circuit, and the output terminal of described PWM control module is connected with the control input end of described DC-DC converter respectively; Wherein, described PWM control module comprises dsp processor, dual port RAM, fpga chip, random access memory, described dsp processor is control core, and communicate respectively by address bus and data bus and dual port RAM and fpga chip, described dsp processor is also connected with random access memory; Described fpga chip is used for status signal power cell being sent to drive singal or received power unit.
The beneficial effects of the utility model: the utility model not only can realize maximal power tracing, to decrease power loss in the transfer to greatest extent, thus cut down the number of intermediate links, and realize maximizes power and utilize.PWM control module in native system all uses technical grade chipset, and data processing speed is fast, and antijamming capability is strong.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the function of the present utility model.
Fig. 2 is PWM control module schematic diagram of the present utility model.
Embodiment
Shown in Fig. 1, Fig. 2, relate to a kind of photovoltaic system of maximum power tracing, comprise multiple photovoltaic module, each described photovoltaic module is connected with the input end of direct-current-alternating-current converter respectively by with DC-DC converter, the output terminal of described direct-current-alternating-current converter is connected with load, the output terminal of described load is connected with the input end of PWM control module by current sample feedback circuit, and the output terminal of described PWM control module is connected with the control input end of described DC-DC converter respectively; Wherein, described PWM control module comprises dsp processor, dual port RAM, fpga chip, random access memory, described dsp processor is control core, and communicate respectively by address bus and data bus and dual port RAM and fpga chip, described dsp processor is also connected with random access memory; Described fpga chip is used for status signal power cell being sent to drive singal or received power unit.
During work, after the electric energy of collection is changed by DC-DC converter by photovoltaic module, load is directly supplied to use by direct-current-alternating-current converter again, and by the current sample feedback circuit arranged, the current signal collected is fed back to PWM control module, the output of DC-DC converter is controlled by PWM control module, to decrease power loss in the transfer to greatest extent, thus cut down the number of intermediate links, realize maximizes power and utilize.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (1)
1. the photovoltaic system of a maximum power tracing, it is characterized in that, comprise multiple photovoltaic module, each described photovoltaic module is connected with the input end of direct-current-alternating-current converter respectively by with DC-DC converter, the output terminal of described direct-current-alternating-current converter is connected with load, the output terminal of described load is connected with the input end of PWM control module by current sample feedback circuit, and the output terminal of described PWM control module is connected with the control input end of described DC-DC converter respectively; Wherein, described PWM control module comprises dsp processor, dual port RAM, fpga chip, random access memory, described dsp processor is control core, and communicate respectively by address bus and data bus and dual port RAM and fpga chip, described dsp processor is also connected with random access memory; Described fpga chip is used for status signal power cell being sent to drive singal or received power unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520184673.7U CN204557276U (en) | 2015-03-30 | 2015-03-30 | The photovoltaic system of maximum power tracing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520184673.7U CN204557276U (en) | 2015-03-30 | 2015-03-30 | The photovoltaic system of maximum power tracing |
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| Publication Number | Publication Date |
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| CN204557276U true CN204557276U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520184673.7U Expired - Fee Related CN204557276U (en) | 2015-03-30 | 2015-03-30 | The photovoltaic system of maximum power tracing |
Country Status (1)
| Country | Link |
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| CN (1) | CN204557276U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106559028A (en) * | 2015-09-25 | 2017-04-05 | 日月元科技(深圳)有限公司 | Two-way maximum power point tracking off-network type solar inverter device and control method |
| TWI669589B (en) * | 2018-08-29 | 2019-08-21 | 崑山科技大學 | Maximum power tracking method for solar cell and system thereof suitable for real-time online environment |
| CN112925377A (en) * | 2021-02-01 | 2021-06-08 | 浙江晶科能源有限公司 | Photovoltaic system and maximum power tracking method thereof |
-
2015
- 2015-03-30 CN CN201520184673.7U patent/CN204557276U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106559028A (en) * | 2015-09-25 | 2017-04-05 | 日月元科技(深圳)有限公司 | Two-way maximum power point tracking off-network type solar inverter device and control method |
| CN106559028B (en) * | 2015-09-25 | 2018-07-27 | 日月元科技(深圳)有限公司 | Two-way maximum power point tracking off-network type solar inverter device and control method |
| TWI669589B (en) * | 2018-08-29 | 2019-08-21 | 崑山科技大學 | Maximum power tracking method for solar cell and system thereof suitable for real-time online environment |
| CN112925377A (en) * | 2021-02-01 | 2021-06-08 | 浙江晶科能源有限公司 | Photovoltaic system and maximum power tracking method thereof |
| CN112925377B (en) * | 2021-02-01 | 2022-07-29 | 浙江晶科能源有限公司 | Photovoltaic system and maximum power tracking method thereof |
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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 |
Granted publication date: 20150812 Termination date: 20160330 |
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| CF01 | Termination of patent right due to non-payment of annual fee |