CN104345767A - Tracking device and tracking method of maximum power point of photovoltaic module - Google Patents
Tracking device and tracking method of maximum power point of photovoltaic module Download PDFInfo
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- CN104345767A CN104345767A CN201310343212.5A CN201310343212A CN104345767A CN 104345767 A CN104345767 A CN 104345767A CN 201310343212 A CN201310343212 A CN 201310343212A CN 104345767 A CN104345767 A CN 104345767A
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- power
- photovoltaic module
- control command
- output power
- load blocks
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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 provides a tracking device of a maximum power point of a photovoltaic module. The tracking device of the maximum power point is used for detecting output power of the photovoltaic module and adjusting power consumed by a load module to allow the photovoltaic module to work at the maximum power point, and comprises a photovoltaic detection unit, a storage unit, a judgment unit and a control unit; and the load module comprises a temperature control unit and a closed container. The tracking device of the maximum power point adopts the temperature control unit to reduce temperature in the closed container to increase the power of the load module, so that the photovoltaic module works at the maximum power point, and partial energy provided by the photovoltaic module is stored in the closed container in a cold air form. The invention further provides a tracking method of the maximum power point of the photovoltaic module.
Description
Technical field
The present invention relates to a kind of follow-up mechanism and method thereof of maximum power point, particularly relate to a kind of follow-up mechanism and method thereof of photovoltaic module maximum power point.
Background technology
In the epoch of this lack of energy, photovoltaic becomes the liberator of the energy, and the intensity of sunshine change of the power servo state provided for fear of photovoltaic module, has unique family curve, how to allow photovoltaic module Maximum Power Output, and there is many research countries in the world.Current technology can roughly classify as following several: (1) voltage feedback method, (2) power back coupling method, (3) disturbance observation, (4) three power and position relative methods, (5) increment conductance method, (6) straight-line approximation method, (7) actual measurement method, (8) short-circuit current method.And these methods are all mainly reach photovoltaic module Maximum Power Output point by the adjustment of Power Electronic Technique.
The prerequisite reaching maximum power point is: the power of load consumption is more than or equal to the power that photovoltaic module provides, that is the energy that load consumes at least will equal the energy of photovoltaic module supply, peak power just can be set up, such as photovoltaic module can provide the power of 1000W when being operated in maximum power point, now load only needs 500W, at this time photovoltaic module because limit to by load, do not need to provide 1000W, because the power had more does not have place to store yet, now maximum power point does not just exist.
Summary of the invention
In view of this, follow-up mechanism and method thereof that a kind of photovoltaic module maximum power point is provided is necessary.
The invention provides a kind of maximum power point tracking device of photovoltaic module, this maximum power point tracking device is connected with a photovoltaic module and a load blocks, and this maximum power point tracking device comprises:
One control module, for sending the control command of an increase load blocks power to described load blocks;
One photovoltaic detecting unit, for the output power of detected light photovoltaic assembly before load blocks carries out regulating power consumption according to described control command and the output power after regulating power consumption;
One judging unit, for judging the output power of described photovoltaic module before whether the output power of load blocks after carrying out regulating power consumption according to described control command is greater than adjustment, and
One control module, for when the output power of described judging unit determination photovoltaic module before the output power of load blocks after carrying out regulating power consumption according to described control command is greater than adjustment, sends the control command that increases described load blocks power; When output power is after adjustment less than the output power before adjustment, send the control command that reduces described load blocks power.
Present invention also offers a kind of photovoltaic module maximum power point tracking method, the method comprises:
A), detect the present output power of a photovoltaic module, and this present output power is stored in a storage unit as the output power before adjustment;
B), send one and increase the control command of a load blocks power to this load blocks, and then regulate the output power of described photovoltaic module;
C), the output power after the adjustment of described photovoltaic module is detected;
D), judge described photovoltaic module regulate after output power whether be greater than the output power before adjustment, be greater than, enter step e; Otherwise, enter step f;
E), send the control command that increases described load blocks power, and return step c;
F), send the control command that reduces described load blocks power, and return step c.
The follow-up mechanism of a kind of photovoltaic module maximum power point of the present invention and method thereof are when the power that photovoltaic module can provide is greater than the power of load blocks consumption, by increasing the power that load blocks consumes, photovoltaic module is made to be operated on maximum power point, not only utilize photovoltaic module to the full extent, and the portion of energy to be provided by photovoltaic module is stored in closed container, reaches the maximum using of energy.
Accompanying drawing explanation
Fig. 1 is the module diagram of photovoltaic module maximum power point tracking device in one embodiment of the present invention.
Fig. 2 is the method flow diagram of device in Fig. 1.
Main element symbol description
| Maximum power point tracking device | 10 |
| Photovoltaic detecting unit | 11 |
| Storage unit | 12 |
| Judging unit | 13 |
| Control module | 14 |
| Photovoltaic module | 20 |
| Load blocks | 30 |
| Temperature control unit | 31 |
| Closed container | 32 |
| Consumer | 33 |
| Step | S10~S18 |
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Refer to Fig. 1, the invention provides a kind of maximum power point tracking device 10 of photovoltaic module, described maximum power point tracking device 10 is connected with a photovoltaic module 20 and a load blocks 30.Described photovoltaic module 20 is for providing power supply for described load blocks 30, and in the present embodiment, this photovoltaic module 20 is a solar panel, and sun power can be converted to electric energy and be supplied to described load blocks 30 by this solar panel.
Described load blocks 30 comprises a temperature control unit 31 and at least one consumer 33 be contained in closed container 32, and described temperature control unit 31 is for controlling the temperature of described closed container 32.In the present embodiment, described temperature control unit 31 is an air-conditioning, the temperature of the power adjustment closed container 32 using described photovoltaic module 20 to provide, and the power that described consumer 33 consumes is a steady state value.When this air-conditioning reduces the temperature of closed container 32, the power that this air-conditioning consumes increases, and the power that described load blocks 30 consumes also increases thereupon; Otherwise the power that this load blocks 30 consumes reduces.
Also be provided with at least one consumer 33 in described closed container 32, the effect of this closed container 32 stops this closed container 32 outside heat to enter internal tank, ensures that the temperature of this closed container 32 is not by the impact of outside heat.In the present embodiment, described consumer 33 is server, and this server is used for providing services on the Internet for user, comprises exchanges data, storage etc.
Described maximum power point tracking device 10 comprises photovoltaic detecting unit 11, storage unit 12, judging unit 13 and a control module 14.This maximum power point tracking device 10 for detecting the output power of this photovoltaic module 20, and regulates the power that this load blocks 30 consumes, and then the output power of this photovoltaic module 20 of indirect regulation, and this photovoltaic module 20 is operated on maximum power point.In the present embodiment, described maximum power point tracking device 10 is an electronic installation with multimode controlling functions, as FPGA(field programmable gate array), CPLD(CPLD) or MCU(microcontroller) etc.
This present output power for detecting the present output power of described photovoltaic module 20, and is stored in storage unit 12 as the output power before adjustment by described photovoltaic detecting unit 11.Particularly, in the present embodiment, this photovoltaic detecting unit 11 is resistance element, such as resistance etc., by detecting the voltage and the output power of this photovoltaic module 20 of current sense that this photovoltaic module 20 exports.
The present output power of described photovoltaic module 20 of described storage unit 12 for storing described photovoltaic detecting unit 11 and detecting.
Described control module 14 is for sending the control command of increase load blocks 30 power.Concrete, in the present embodiment, control module 14 sends the control command on refrigeration work consumption 1 rank of the described temperature control unit 31 of an increase, and increase refrigeration work consumption 1 rank after this temperature control unit 31 receives this control command, namely the refrigeration output temperature of temperature control unit 31 reduces by 1 rank.After temperature control unit 31 increases refrigeration work consumption 1 rank, the power also corresponding increase that this load blocks 30 consumes, the thus output power of described photovoltaic module 20 also corresponding increase, thus meet the power needed for load blocks 30.The control command on refrigeration output temperature 1 rank of described reduction temperature control unit 31 refers to reduction refrigeration output temperature 1 class on existing refrigeration output temperature basis, such as, is reduced to 39 DEG C from existing 40 DEG C.
Described photovoltaic detecting unit 11 detects the output power after the adjustment of described photovoltaic module 20 again.
Output power before whether described judging unit 13 is greater than adjustment for the output power of photovoltaic module 20 after load blocks 30 carries out power adjustments according to described control command judging described storage unit 12 and store.In the present embodiment, if the output power after this photovoltaic module 20 regulates is greater than the output power before adjustment, illustrate that described photovoltaic module 20 is after the power that load blocks 30 consumes increases, output power also increases thereupon, does not reach maximum power point when namely this photovoltaic module 20 works with the output power before adjustment; Otherwise, if the output power after the adjustment of this photovoltaic module 20 is unchanged, illustrate that this photovoltaic module 20 reaches maximum power point.
Described control module 14, when described judging unit 13 determines the output power before the output power after described photovoltaic module 20 regulates is greater than adjustment, sends one and increases the control command of described load blocks 30 power; Otherwise send the control command that reduces this load blocks power.Concrete, in the present embodiment, control module 14 sends an increase or reduces the control command of refrigeration work consumption of described temperature control unit 31, and this temperature control unit 31 increases after receiving this control command or reduces refrigeration work consumption 1 rank.After temperature control unit 31 increases or reduces refrigeration work consumption 1 rank, power also corresponding increase or the reduction that this load blocks 30 consumes, the thus output power of described photovoltaic module 20 also corresponding increase or reduction, thus meet the power needed for load blocks 30.The control command on described increase or reduction refrigeration work consumption 1 rank refers to increase or reduction refrigeration work consumption 1 class on existing refrigeration work consumption basis, such as, increases to 1000W from existing 800W, or is reduced to 800W from existing 1000W.
Refer to Fig. 2, in an embodiment of the present invention for the method for tracing process flow diagram of described photovoltaic module maximum power point tracking device 10, the method comprises:
Step S10, photovoltaic detecting unit 11 detects the present output power of described photovoltaic module 20, and this present output power is stored in storage unit 12 as the output power before adjustment.Particularly, in the present embodiment, this photovoltaic detecting unit 11 is resistance element, such as resistance etc., by detecting the voltage and the output power of this photovoltaic module 20 of current sense that this photovoltaic module 20 exports.
Step S11, control module 14 sends the control command of increase load blocks 30 power.Concrete, in the present embodiment, control module 14 sends the control command on refrigeration output temperature 1 rank of a reduction temperature control unit 31, increases refrigeration work consumption 1 rank after this temperature control unit 31 receives this control command.After temperature control unit 31 increases refrigeration work consumption 1 rank, the power also corresponding increase that this load blocks 30 consumes, the thus output power of described photovoltaic module 20 also corresponding increase, thus meet the power needed for load blocks 30.The control command on refrigeration output temperature 1 rank of described reduction temperature control unit 31 refers to reduction refrigeration output temperature 1 class on existing refrigeration output temperature basis, such as, is reduced to 39 DEG C from existing 40 DEG C.
Step S12, temperature control unit 31 increases refrigeration work consumption 1 rank after receiving described control command.In the present embodiment, after this temperature control unit 31 increases refrigeration work consumption 1 rank, the power also corresponding increase that described load blocks 30 consumes, the thus output power of described photovoltaic module 20 also corresponding increase, thus meet the power needed for load blocks 30.
Step S13, photovoltaic detecting unit 11 detects the output power after the adjustment of described photovoltaic module 20.
Step S14, whether the output power after judging unit 13 judges photovoltaic module 20 adjustment that described storage unit 12 stores is greater than the output power before adjustment, if so, then enters step S15; Otherwise enter step S17.
Particularly, in the present embodiment, if the output power after this photovoltaic module 20 regulates is greater than the output power before adjustment, illustrate that described photovoltaic module 20 is after the power that load blocks 30 consumes increases, output power also increases thereupon, does not reach maximum power point when namely this photovoltaic module 20 works with the output power before adjustment; Otherwise, if the output power after the adjustment of this photovoltaic module 20 is unchanged, illustrate that this photovoltaic module 20 reaches maximum power point.
Step S15, control module 14 sends the control command of an increase described load blocks 30 power.Concrete, in the present embodiment, control module 14 sends the control command of an increase described temperature control unit 31 refrigeration work consumption.The control command on described increase refrigeration work consumption 1 rank refers to and increase refrigeration work consumption 1 class on existing refrigeration work consumption basis, such as, increases to 1000W from existing 800W.
Step S16, temperature control unit 31 increases refrigeration work consumption 1 rank after receiving described control command and returns step S10.In the present embodiment, after this temperature control unit 31 increases refrigeration work consumption 1 rank, the power also corresponding increase that described load blocks 30 consumes.
Step S17, control module 14 sends the control command of a reduction described load blocks 30 power.Concrete, in the present embodiment, control module 14 sends the control command of a reduction described temperature control unit 31 refrigeration work consumption.The control command on described reduction refrigeration work consumption 1 rank refers to and reduce refrigeration work consumption 1 class on existing refrigeration work consumption basis, such as, is reduced to 800W from existing 1000W.
Step S18, temperature control unit 31 reduces refrigeration work consumption 1 rank after receiving described control command and returns step S10.In the present embodiment, after this temperature control unit 31 reduces refrigeration work consumption 1 rank, the power also corresponding reduction that described load blocks 30 consumes.
The follow-up mechanism of a kind of photovoltaic module maximum power point of the present invention and method thereof, when the power that photovoltaic module can provide is greater than the power of load blocks consumption, the temperature in closed container is reduced by temperature control unit, to increase the power of load blocks, photovoltaic module is made to be operated on maximum power point, not only utilize photovoltaic module to the full extent, and the portion of energy provided by photovoltaic module is stored in closed container with the form of cold air, reaches the maximum using of energy.
Those skilled in the art will be appreciated that; above embodiment is only used to the present invention is described; and be not used as limitation of the invention; as long as within spirit of the present invention, the suitable change do above embodiment and change all drop within the scope of protection of present invention.
Claims (8)
1. a photovoltaic module maximum power point tracking device, this maximum power point tracking device is connected with a photovoltaic module and a load blocks, it is characterized in that, this maximum power point tracking device comprises:
One control module, for sending the control command of an increase load blocks power to described load blocks;
One photovoltaic detecting unit, for the output power of detected light photovoltaic assembly before load blocks carries out regulating power consumption according to described control command and the output power after regulating power consumption;
One judging unit, for judging the output power of described photovoltaic module before whether the output power of load blocks after carrying out regulating power consumption according to described control command is greater than adjustment, and
One control module, for when the output power of described judging unit determination photovoltaic module before the output power of load blocks after carrying out regulating power consumption according to described control command is greater than adjustment, sends the control command that increases described load blocks power; When output power is after adjustment less than the output power before adjustment, send the control command that reduces described load blocks power.
2. a photovoltaic module maximum power point tracking device, this maximum power point tracking device is connected with a photovoltaic module and a load blocks, maximum power point is operated in for making this photovoltaic module, described load blocks comprises a temperature control unit and at least one is contained in consumer in a closed container, it is characterized in that, this maximum power point tracking device comprises:
One control module, for sending the control command of an increase described temperature control unit refrigeration work consumption to described load blocks;
One photovoltaic detecting unit, for the output power of detected light photovoltaic assembly before temperature control unit carries out power adjustments according to described control command and the output power after regulating power consumption;
One judging unit, for judging the output power of described photovoltaic module before whether the output power of temperature control unit after carrying out regulating power consumption according to described control command is greater than adjustment, and
One control module, for when the output power of described judging unit determination photovoltaic module before the output power of temperature control unit after carrying out regulating power consumption according to described control command is greater than adjustment, send the control command that increases described temperature control unit refrigeration work consumption; When output power is after adjustment less than the output power before adjustment, send the control command that reduces described temperature control unit refrigeration work consumption.
3. maximum power point tracking device as claimed in claim 2, it is characterized in that, described consumer is server.
4. maximum power point tracking device as claimed in claim 2, it is characterized in that, described photovoltaic detecting unit is resistance element, by the output power of the output voltage and this photovoltaic module of current sense of detecting described photovoltaic module.
5. maximum power point tracking device as claimed in claim 2, is characterized in that, the control command of described increase or the refrigeration work consumption that reduces described temperature control unit temperature refers to the control command increasing or reduce described temperature control unit refrigeration work consumption 1 rank.
6. a photovoltaic module maximum power point tracking method, is characterized in that, the method comprises:
A), detect the present output power of a photovoltaic module, and this present output power is stored in a storage unit as the output power before adjustment;
B), send one and increase the control command of a load blocks power to this load blocks, and then regulate the output power of described photovoltaic module;
C), the output power after the adjustment of described photovoltaic module is detected;
D), judge described photovoltaic module regulate after output power whether be greater than the output power before adjustment, be greater than, enter step e; Otherwise, enter step f;
E), send the control command that increases described load blocks power, and return step c;
F), send the control command that reduces described load blocks power, and return step c.
7. method for tracing as claimed in claim 6, it is characterized in that, the control command of the increase load blocks power described in step b and e is the control command of increase one temperature control unit refrigeration work consumption, and the control command of the reduction load blocks power described in step f is the control command reducing described temperature control unit refrigeration work consumption.
8. method for tracing as claimed in claim 7, is characterized in that, described increase or the control command reducing described temperature control unit refrigeration work consumption refer to the control command increasing or reduce these temperature control unit refrigeration work consumption 1 rank.
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| CN201310343212.5A CN104345767A (en) | 2013-08-08 | 2013-08-08 | Tracking device and tracking method of maximum power point of photovoltaic module |
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| CN201310343212.5A CN104345767A (en) | 2013-08-08 | 2013-08-08 | Tracking device and tracking method of maximum power point of photovoltaic module |
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| CN104345767A true CN104345767A (en) | 2015-02-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104499A (en) * | 2017-04-26 | 2017-08-29 | 安徽机电职业技术学院 | The output control method of photovoltaic module peak power |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104499A (en) * | 2017-04-26 | 2017-08-29 | 安徽机电职业技术学院 | The output control method of photovoltaic module peak power |
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Application publication date: 20150211 |