CN202004692U - Photovoltaic power optimizer - Google Patents
Photovoltaic power optimizer Download PDFInfo
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- CN202004692U CN202004692U CN2011201146356U CN201120114635U CN202004692U CN 202004692 U CN202004692 U CN 202004692U CN 2011201146356 U CN2011201146356 U CN 2011201146356U CN 201120114635 U CN201120114635 U CN 201120114635U CN 202004692 U CN202004692 U CN 202004692U
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- photovoltaic
- optimizer
- power
- power optimizer
- photovoltaic power
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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
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Abstract
The utility model relates to a photovoltaic power optimizer belonging to the technical field of photovoltaic power generation system application. The photovoltaic power optimizer adopts the technical scheme as follows: the photovoltaic power optimizer comprises a plurality of battery assemblies connected in series and side by side, each battery panel is connected with a DC (direct current)-DC power optimizer with an MPPT (Maximum Power Point Tracking) function, and the output of each battery panel module is connected at the input point of a DC-DC power optimizer module. The photovoltaic power optimizer has the beneficial effects that the DC-DC power optimizer monitors and optimizes the electric energy of each photovoltaic battery panel, and the other battery panels can still output maximum power even if any one battery panel in a array has a mismatching problem, thus being capable of compensating the power generation loss due to the mismatching problem; and the DC-DC power optimizer can be fast and easily installed in a solar photovoltaic system.
Description
Technical field:
The utility model relates to a kind of photovoltaic power optimizer, belongs to the photovoltaic generating system applied technical field.
Background technology:
The full name of MPPT controller " MPPT maximum power point tracking " (Maximum Power Point Tracking) controller for solar.Solar energy is one of the most promising regenerative resource on the market.The investment repayment of photovoltaic system depends on this system energy output in every year, thus the photovoltaic system that the user needs must possess efficiently, reliably and be easy to characteristic such as maintenance, thereby can obtain energy output to greatest extent.In photovoltaic power system, be used for realizing that the mode of photovoltaic module best power is MPPT, at present common is all cell panels to be received single inverter carry out MPPT.This mode is transferred to the inverter centralized control with the MPPT function, thereby needs a large amount of and complicated control computing.When the illumination condition of cell panel was consistent, this system can work normally, but occurred that usefulness does not match or shade when covering situation when the part solar panels, and the electrical efficiency of this system will reduce greatly.The photovoltaic generating system of extensive use at present is with directly receiving on the concentrated inverter after all battery module connection in series-parallel, so that electric power is sent to network system.Such frame structure can only be regulated the MPPT of whole system, and can't carry out the MPPT Tracing Control to each cell panel of each group string in the photovoltaic system, so also just can not guarantee every cell panel Maximum Power Output.As long as any cell panel generation illumination masking phenomenon in each group string, other cell panels of this group string will be affected so, and output voltage will be pulled on the irrational numerical value, causes energy loss.
The utility model content:
The utility model purpose provides a kind of photovoltaic power optimizer, guarantees in the photovoltaic system each photovoltaic module power output to greatest extent, solves when photovoltaic system is subjected to shade and blocks the problem that causes energy output to plummet.
The technical solution of the utility model is: a kind of photovoltaic power optimizer, comprise photovoltaic cell unit, DC-DC optimizer, MPPT control unit and inverter, each photovoltaic cell unit DC-DC optimizer of all connecting wherein, and the output of photovoltaic cell unit connects the input of DC-DC optimizer, and series connection forms the unit, and each unit parallel connection is connected to the input of inverter then.
In the panel array of the DC/DC power optimization device technology that adopts band MPPT function, each cell panel allocating power optimizer, the power optimization device carries out dual tracking, on the one hand, follows the tracks of the MPP maximum power point of single cell panel; On the other hand, the output voltage of regulating cell plate transmits to improve system capacity to greatest extent.Therefore, whole group of string has identical output current, greatly reduces the hot spot problem and adopts the internal by-pass pattern.
The beneficial effects of the utility model are: the electric energy of every photovoltaic battery panel is monitored and optimized to DC/DC power optimization device, when even mismatch problems appears in any cell panel in the array, other cell panels still can Maximum Power Output, thereby can compensate the energy output loss that produces because of mismatch problems; DC/DC power optimization device can be fast, be installed in the solar energy photovoltaic system like a cork.
Description of drawings:
Fig. 1 is the photovoltaic generating system schematic diagram of background technology;
Fig. 2 is the schematic diagram of the utility model embodiment;
Fig. 3 is the control unit schematic diagram of the utility model embodiment;
Among the figure: photovoltaic cell unit 1, DC-DC optimizer 2, MPPT control unit 3, inverter 4, assembled unit 5, microcontroller 6, communication bus 7.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail by embodiment.
A kind of photovoltaic power optimizer, comprise photovoltaic cell unit 1, DC-DC optimizer 2, MPPT control unit 3 and inverter 4, each photovoltaic cell unit 1 DC-DC optimizer 2 of all connecting wherein, and the output of photovoltaic cell unit 1 connects the input of DC-DC optimizer 2, and series connection forms unit 5, and each unit 5 parallel connection is connected to the input of inverter 4 then.
In the panel array of the DC/DC power optimization device technology that adopts band MPPT function, each cell panel allocating power optimizer, the power optimization device carries out dual tracking, on the one hand, follows the tracks of the MPP(maximum power point of single cell panel); On the other hand, the output voltage of regulating cell plate transmits to improve system capacity to greatest extent.Therefore, whole group of string has identical output current, greatly reduces the hot spot problem and adopts the internal by-pass pattern.
Execution mode more specifically:
The schematic diagram of a kind of photovoltaic power optimizer that Fig. 2 provides for the utility model patent.As shown in Figure 2, comprise photovoltaic cell unit 1, DC-DC optimizer 2, MPPT control unit 3 and inverter 4, each photovoltaic cell unit 1 DC-DC optimizer 2 of all connecting wherein, and the output of photovoltaic cell unit 1 connects the input of DC-DC optimizer 2, and series connection forms assembled unit 5, and each assembled unit 5 parallel connection is connected to the input of inverter 4 then.
The DC-DC optimizer 2 owing to all connect in each photovoltaic cell unit 1, and connect MPPT control unit 3, can make each the photovoltaic cell unit 1 in the assembled unit 5 all reach peak power output like this, so just can improve the whole power output of unit 5.After adopting the photovoltaic generating system of this structure, can omit the DC-DC transducer of inverter, design is significantly simplified, for example can simplify the design and the work load of DSP, microcontroller and auxiliary circuit (as signaling interface I/O, programmable interface etc.).The while size can be dwindled a greater part of, and cost also can reduce many naturally.
The control unit schematic diagram of a kind of photovoltaic power optimizer that Fig. 3 provides for the utility model patent as shown in Figure 3, is gathered the voltage V of photovoltaic cell components 1 by microcontroller 6
DC, electric current I
In, the DC-DC optimizer output voltage V
OData can make the power output inconsistency that difference caused because of battery component obtain basic solution, guarantee system's power output maximum, carry out communication by communication bus 7 and computer, have friendly man-machine interface.
Claims (1)
1. photovoltaic power optimizer, it is characterized in that comprising photovoltaic cell unit (1), DC-DC optimizer (2), MPPT control unit (3) and inverter (4), each photovoltaic cell unit (1) DC-DC optimizer (2) of all connecting wherein, and the output of photovoltaic cell unit (1) connects the input of DC-DC optimizer (2), and series connection forms unit (5), and each unit (5) parallel connection is connected to the input of inverter (4) then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201146356U CN202004692U (en) | 2010-12-30 | 2011-04-19 | Photovoltaic power optimizer |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020688924 | 2010-12-30 | ||
| CN201020688924.2 | 2010-12-30 | ||
| CN2011201146356U CN202004692U (en) | 2010-12-30 | 2011-04-19 | Photovoltaic power optimizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202004692U true CN202004692U (en) | 2011-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201146356U Expired - Fee Related CN202004692U (en) | 2010-12-30 | 2011-04-19 | Photovoltaic power optimizer |
Country Status (1)
| Country | Link |
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| CN (1) | CN202004692U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545709A (en) * | 2012-01-19 | 2012-07-04 | 无锡联动太阳能科技有限公司 | Energy optimizing device suitable for solar power generation device |
| CN102611355A (en) * | 2012-03-13 | 2012-07-25 | 特变电工新疆新能源股份有限公司 | Photovoltaic array combiner box |
| CN106877812A (en) * | 2017-05-03 | 2017-06-20 | 李天万 | A kind of photovoltaic cell group protection circuit of high reliability low-power consumption |
| CN107154642A (en) * | 2017-06-08 | 2017-09-12 | 阳光电源股份有限公司 | A kind of grid-connected photovoltaic system and its direct current bus voltage control method and device |
| US10199832B2 (en) | 2015-04-28 | 2019-02-05 | First Solar, Inc. | Photovoltaic DC power distribution system |
-
2011
- 2011-04-19 CN CN2011201146356U patent/CN202004692U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545709A (en) * | 2012-01-19 | 2012-07-04 | 无锡联动太阳能科技有限公司 | Energy optimizing device suitable for solar power generation device |
| WO2013107234A1 (en) * | 2012-01-19 | 2013-07-25 | 无锡联动太阳能科技有限公司 | Energy optimization device for solar power generation device |
| CN102545709B (en) * | 2012-01-19 | 2015-03-11 | 无锡联动太阳能科技有限公司 | Energy optimizing device suitable for solar power generation device |
| CN102611355A (en) * | 2012-03-13 | 2012-07-25 | 特变电工新疆新能源股份有限公司 | Photovoltaic array combiner box |
| US10199832B2 (en) | 2015-04-28 | 2019-02-05 | First Solar, Inc. | Photovoltaic DC power distribution system |
| CN106877812A (en) * | 2017-05-03 | 2017-06-20 | 李天万 | A kind of photovoltaic cell group protection circuit of high reliability low-power consumption |
| CN107154642A (en) * | 2017-06-08 | 2017-09-12 | 阳光电源股份有限公司 | A kind of grid-connected photovoltaic system and its direct current bus voltage control method and device |
| CN107154642B (en) * | 2017-06-08 | 2020-02-14 | 合肥阳光智维科技有限公司 | Photovoltaic grid-connected power generation system and direct current bus voltage control method and device thereof |
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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: 20111005 Termination date: 20140419 |