CN108323219A - The control method of photovoltaic generating system and MPPT maximum power point tracking MPPT - Google Patents
The control method of photovoltaic generating system and MPPT maximum power point tracking MPPT Download PDFInfo
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
- G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
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- 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
A kind of control method of photovoltaic generating system and MPPT maximum power point tracking MPPT, the system comprises：Photovoltaic module (102), for the luminous energy of the sun of acquisition to be converted to direct current；The intelligent wiring box (104) being connect with the photovoltaic module (102), electricity data for the direct current for obtaining the photovoltaic module (102) conversion, the electricity data includes at least one or more in voltage, electric current, power and temperature；The cloud processor (106) being connect with the intelligent wiring box (104), electricity data for receiving the intelligent wiring box (104) transmission, the processing data of the photovoltaic module (102) are calculated according to the electricity data；The photovoltaic DC-to-AC converter (108) being connect with the cloud processor (106), the processing data sent for receiving the cloud processor (106) search maximum power point according to the processing data and MPPT algorithm.Using the technical solution, MPPT tracking velocities and precision can be improved, the wooden pail effect and multi-peaks phenomenon of photovoltaic string formation are improved, to improve the generated energy of photovoltaic generating system.
Description
Technical field
The present invention relates to technical field of photovoltaic power generation, more particularly to a kind of photovoltaic generating system and MPPT maximum power point tracking
The control method of MPPT.
Background technology
In photovoltaic generating system, as shown in Figure 1, the luminous energy of the sun is converted to direct current by photovoltaic module, by multiple photovoltaics
Component photovoltaic string formation in series, then photovoltaic array is constituted by multiple photovoltaic group connection in series-parallel, it is carried by the connection in series-parallel of photovoltaic module
High voltage increases electric current, and header box, power distribution cabinet etc. realize electric linkage function, to obtain higher voltage and power, then
It is generated electricity by way of merging two or more grid systems by photovoltaic DC-to-AC converter realization.Photovoltaic module has been internally integrated bypass as shown in Fig. 2, the back side is equipped with terminal box
Diode.
Meanwhile photovoltaic DC-to-AC converter has MPPT maximum power point tracking (maximum power point tracking, MPPT)
Function detects major loop DC voltage and output current, calculates the output power of photovoltaic array, certainly by house software algorithm
The dynamic maximum power point for finding photovoltaic string formation or photovoltaic array.
As shown in figure 3, when the electric current of some component in multiple concatenated photovoltaic modulies reduces, it is whole to directly result in this string
The total current of a photovoltaic string formation reduces, and this phenomenon is known as wooden pail effect.And when some component leads to electric current for various reasons
Reduce and other assemblies electric current it is still normal when, photovoltaic DC-to-AC converter track MPPT during, maximum power point is possible to track
The small numerical value of this electric current or bypass diode are connected and lose this component power, cause the multimodal of MPPT tracking processes
Phenomenon, as shown in figure 4, the real output of entire photovoltaic string formation is caused to reduce.
Invention content
Based on this, in order to improve the wooden pail effect and MPPT tracking that multiple photovoltaic module series connection are brought in above-mentioned traditional technology
Process occur multi-peaks phenomenon, cause entire photovoltaic string formation real output reduce the technical issues of, provide a kind of light
Photovoltaic generating system.
First aspect present invention provides a kind of photovoltaic generating system, the system comprises：
Photovoltaic module, for the luminous energy of the sun of acquisition to be converted to direct current；
The intelligent wiring box being connect with the photovoltaic module, the electricity of the direct current for obtaining the photovoltaic module conversion
Data, the electricity data include at least one or more in voltage, electric current, power and temperature；
The cloud processor being connect with the intelligent wiring box, the electricity data sent for receiving the intelligent wiring box,
The processing data of the photovoltaic module are calculated according to the electricity data；
The photovoltaic DC-to-AC converter being connect with the cloud processor, the processing data sent for receiving the cloud processor, root
Maximum power point is searched according to the processing data and MPPT algorithm.
In the first possible realization method of first aspect, the intelligent wiring box further includes microprogram control unit,
For when the electricity data of the photovoltaic module of acquisition leads normal, controlling and the microprogram control unit and the photovoltaic module
The switch unit of connection is so as to turn off the electrical connection of the photovoltaic module.
In second of possible realization method of first aspect, the processing data include at least the photovoltaic module
Quantity, the average voltage of the photovoltaic module, current average and output power；
The cloud processor is additionally operable to obtain the output power actual value of the photovoltaic module, when output power reality
When value is less than the output power, determine that there are wooden pail effects for the photovoltaic module；
The monitoring module being connect with the cloud processor, for alarming, there are the light of wooden pail effect described in the system maintenance
Lie prostrate component.
In the third possible realization method of first aspect, the photovoltaic DC-to-AC converter is additionally operable to receive the cloud processing
The MPPT algorithm initial value that device is sent, sets the MPPT algorithm initial value of the MPPT algorithm.
In the 4th kind of possible realization method of first aspect, the photovoltaic module and the cloud processor and described
The communication modes used between photovoltaic DC-to-AC converter and the cloud processor is wired connection and/or wireless connections.
In addition, being tracked to improve multiple photovoltaic module series connection are brought in above-mentioned traditional technology wooden pail effect and MPPT
Journey occur multi-peaks phenomenon, cause entire photovoltaic string formation real output reduce the technical issues of, provide a kind of photovoltaic
The control method of the MPPT maximum power point tracking MPPT of electricity generation system.
Second aspect of the present invention provides a kind of control method of the MPPT maximum power point tracking MPPT of photovoltaic generating system, institute
The method of stating includes：
The luminous energy of the sun of acquisition is converted to direct current by photovoltaic module；
Intelligent wiring box obtains the electricity data of the direct current of the photovoltaic module conversion, and the electricity data includes at least
It is one or more in voltage, electric current, power and temperature；
Cloud processor receives the electricity data that the intelligent wiring box is sent, and is calculated according to the electricity data described
The processing data of photovoltaic module；
Photovoltaic DC-to-AC converter receives the processing data that the cloud processor is sent, and is looked into according to the processing data and MPPT algorithm
Look for maximum power point.
In the first possible realization method of second aspect, the intelligent wiring box obtains the photovoltaic module conversion
The electricity data of direct current further include：
When the electricity data for the photovoltaic module that microprogram control unit obtains leads normal, control switch unit is so that shutdown
The electrical connection of the photovoltaic module.
In second of possible realization method of second aspect, the processing data include at least the photovoltaic module
Quantity, the average voltage of the photovoltaic module, current average and output power；
The cloud processor receives the electricity data that the intelligent wiring box is sent, and is calculated according to the electricity data
The processing data of the photovoltaic module further include：
The cloud processor is additionally operable to obtain the output power actual value of the photovoltaic module, when output power reality
When value is less than the output power, determine that there are wooden pail effects for the photovoltaic module；
The monitoring module being connect with the cloud processor, for alarming, there are the light of wooden pail effect described in the system maintenance
Lie prostrate component.
In the third possible realization method of second aspect, the photovoltaic DC-to-AC converter receives the cloud processor and sends
Processing data, searching the maximum power point according to the processing data and MPPT algorithm further includes：
The MPPT algorithm initial value that the cloud processor is sent is received, at the beginning of setting the MPPT algorithm of the MPPT algorithm
Initial value.
In the 4th kind of possible realization method of fourth aspect, the photovoltaic module and the cloud processor and described
The communication modes used between photovoltaic DC-to-AC converter and the cloud processor is wired connection and/or wireless connections.
Implement the embodiment of the present invention, will have the advantages that：
After the control method for using above-mentioned photovoltaic generating system and MPPT maximum power point tracking MPPT, intelligent wiring box
The electricity data of photovoltaic module is obtained, and electricity data is uploaded to cloud processor, cloud processor is calculated according to electricity data
Be sent to photovoltaic DC-to-AC converter to the processing data of photovoltaic module, then by processing data, photovoltaic DC-to-AC converter according to processing data and
MPPT algorithm searches maximum power point.The electricity data of photovoltaic module is handled according to cloud processor, determination leads to wooden pail effect
Photovoltaic module, and the lookup of maximum power point is based on processing data so that MPPT algorithm fast setting to certain in polymodal curve
One peak improves MPPT tracking velocities and precision, improves the wooden pail effect and multi-peaks phenomenon of photovoltaic string formation, to improve photovoltaic hair
The generated energy of electric system.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Wherein：
Fig. 1 is a kind of structure drawing of device of photovoltaic array；
Fig. 2 is the structure drawing of device of another photovoltaic module；
Fig. 3 is the circuit diagram of wooden pail effect caused by photovoltaic module series connection；
Fig. 4 is the circuit diagram of multi-peaks phenomenon caused by photovoltaic module series connection；
Fig. 5 is a kind of structure drawing of device of photovoltaic generating system provided by the invention；
Fig. 6 is a kind of structure drawing of device of photovoltaic module and intelligent wiring box provided by the invention；
Fig. 7 is a kind of control method flow of the MPPT maximum power point tracking MPPT of photovoltaic generating system provided by the invention
Figure.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
Process appearance is tracked to improve multiple photovoltaic module series connection are brought in above-mentioned traditional technology wooden pail effect and MPPT
Multi-peaks phenomenon, cause entire photovoltaic string formation real output reduce the technical issues of.The first aspect of the present invention proposes
A kind of photovoltaic generating system.The photovoltaic generating system can be applied to single-phase or three-phase alternating current system according to current phase classification,
Grid-connected, photovoltaic off-grid or photovoltaic energy storage system are can be applied to according to application type classification.
Specifically, as shown in figure 5, above-mentioned photovoltaic generating system includes photovoltaic module 102, connects with the photovoltaic module 102
The intelligent wiring box 104 that connects, the cloud processor 106 being connect with the intelligent wiring box 104 and connect with the cloud processor 106
The photovoltaic DC-to-AC converter 108 connect, wherein：
Photovoltaic module 102 is used to the luminous energy of the sun of acquisition being converted to direct current.
One solar cell can only generate about 0.5 volt of voltage, far below voltage needed for actual use.In order to meet
The needs of practical application need solar cell to connect into photovoltaic module 102.Photovoltaic module 102 (is also solar cell
Plate) it is most important part in core and photovoltaic generating system in photovoltaic generating system, effect is by solar energy
It is converted into electric energy.
As shown in Figure 1, the luminous energy of the sun is converted to direct current by photovoltaic module 102, by the series connection structure of multiple photovoltaic modulies 102
Constitute photovoltaic array at photovoltaic string formation, then by multiple photovoltaic group connection in series-parallel, by the connection in series-parallel of photovoltaic module 102 improve voltage,
Increase electric current, header box, power distribution cabinet etc. realize then electric linkage function passes through light to obtain higher voltage and power
The volt realization of inverter 108 is generated electricity by way of merging two or more grid systems.
In the present embodiment, intelligent wiring box 104 is used to obtain the electricity number of the direct current of the conversion of the photovoltaic module 102
According to the electricity data includes at least one or more in voltage, electric current, power and temperature.
Similar with photovoltaic module shown in Fig. 2,102 back side of photovoltaic module is equipped with terminal box, however terminal box here
For intelligent wiring box 104, one or more electricity in voltage, electric current, power and temperature for acquiring respective photovoltaic module 102
Data are measured, and with communication monitoring function, the electricity data detected is sent to cloud processor 106.It additionally can receive cloud
Processor 106 instructs relevant control and is handed down to photovoltaic module 102 by intelligent wiring box 104.Specifically as shown in fig. 6, intelligence
104 inside of energy terminal box includes microprogram control unit 1042 and is connect with microprogram control unit 1042 and photovoltaic module 102
Switch unit 1044.
When microprogram control unit 1042 detects that the electricity data of photovoltaic module 102 occurs leading normal situation (such as fire, maintenance
Deng) when, the switch unit 1044 being connect with microprogram control unit 1042 is controlled so as to turn off the electrical connection of photovoltaic module 102.
Switch unit 1046 can be relay, can also be other buttons or switch for opening the electrical connection of photovoltaic module 102
Device.That is, the electricity data that microprogram control unit 1042 detects the photovoltaic module 102 that intelligent wiring box 104 obtains is
It is no to be in exceptional value, if so, turning off the electrical connection of photovoltaic module 102 by controlling switch unit 1044.
For example, when microprogram control unit 1042 detects current voltage exception, it is determined as voltage short circuit, microprogram
Controller 1042 notifies switch unit 1044 to turn off the electrical connection of photovoltaic module 102.
In the present embodiment, cloud processor 106 is used to receive the electricity data of the transmission of the intelligent wiring box 104, according to
The processing data of the photovoltaic module are calculated in the electricity data.
The cloud processor 106 being connect with intelligent wiring box 104 can be by wired connection, also can be by being wirelessly connected, also
It is to say, the communication modes that photovoltaic module 102 is used with cloud processor 106 is wired connection or wireless connections.In addition, photovoltaic inversion
The communication modes used between device 108 and cloud processor 106 is wired connection or wireless connections.
It handles data and includes at least the quantity of photovoltaic module 102, the average voltage of photovoltaic module 102, current average
And output power, it may also include average voltage and average current of the photovoltaic string formation being connected in series by photovoltaic module 102 etc. in addition.
Optionally, the cloud processor 106 is additionally operable to obtain the output power actual value of the photovoltaic module 102, works as institute
When stating output power actual value less than the output power, determine that there are wooden pail effects for the photovoltaic module 102；At the cloud
The monitoring module that device 106 connects is managed, there are the photovoltaic modulies of wooden pail effect 102 described in the system maintenance for alarming.
That is, the system may include the monitoring unit being connect with cloud processor 106, when there are wooden pail effects for determination
Photovoltaic module 102 when, inform system alarm be specifically which photovoltaic module cause generate wooden pail effect.
As shown in figure 3, when the electric current of some component in multiple concatenated photovoltaic modulies reduces, it is whole to directly result in this string
The total current of a photovoltaic string formation reduces, and this phenomenon is known as wooden pail effect.It is practical by comparing the output power of photovoltaic module 102
The size of value and processing data, when output power actual value is less than processing data, then the electric current of the photovoltaic module 102 reduces,
Judging the photovoltaic module 102, there are wooden pail effects, to which system for prompting needs to safeguard photovoltaic module, to improve photovoltaic generation system
The cost and efficiency of system O＆M.Meanwhile cloud processor 106 processing data distributing to photovoltaic DC-to-AC converter 108.
In the present embodiment, photovoltaic DC-to-AC converter 108 is used to receive the processing data that the cloud processor 106 is sent, according to
The processing data and MPPT algorithm search the maximum power point.
It is mutually communicated between photovoltaic module 102, cloud processor 106 and photovoltaic DC-to-AC converter 108, photovoltaic module 102 and photovoltaic
The working condition of inverter 108 can be reported to cloud processor 106, and relevant control instruction is handed down to photovoltaic group by cloud processor 106
Part 102 and photovoltaic DC-to-AC converter 108, used communication modes either wired connection, can also be wirelessly connected.
MPPT maximum power point tracking (Maximum Power Point Tracking, abbreviation MPPT) detects major loop direct current
Pressure and output current, calculate the output power of photovoltaic array, and by house software MPPT algorithm Automatic-searching photovoltaic string formation,
Or the maximum power point of photovoltaic array.
Multi-peaks phenomenon as shown in Figure 4, when some component causes electric current to reduce and other assemblies electric current for various reasons
Still when normal, during photovoltaic DC-to-AC converter tracks MPPT, maximum power point be possible to track the small numerical value of this electric current or
Person's bypass diode is connected and loses this component power, causes the multi-peaks phenomenon of MPPT tracking processes, leads to entire photovoltaic group
The real output of string reduces.
After photovoltaic DC-to-AC converter 108 receives the processing data of the transmission of cloud processor 106, its internal software and hardware can be set according to this
Circuit MPPT algorithm initial value leads to the photovoltaic module of multi-peaks phenomenon according to MPPT algorithm initial value and processing data search, makes
A certain peak in MPPT algorithm fast setting to polymodal curve, to improve the multi-peaks phenomenon of photovoltaic module 102 and realize quick
MPPT functions.Photovoltaic module is adjusted further according to maximum power point is found, improves the generated energy of photovoltaic generating system.
Optionally, the MPPT algorithm initial value that cloud processor 106 is sent is received, the MPPT of the MPPT algorithm is set
Algorithm initial value.According to the MPPT algorithm initial value that cloud processor 106 is sent, processing MPPT tracking velocities and essence are further speeded up
Degree improves the multi-peaks phenomenon of photovoltaic module 102 and realizes quick MPPT functions.Specially：The photovoltaic DC-to-AC converter is additionally operable to connect
The MPPT algorithm initial value that the cloud processor is sent is received, the MPPT algorithm initial value of the MPPT algorithm is set.
It should be noted that in case of photovoltaic module 102 disconnect electrical connection or photovoltaic DC-to-AC converter 108 shut down, then with
On workflow terminate.
The more of process appearance are tracked to improve multiple photovoltaic module series connection are brought in traditional technology wooden pail effect and MPPT
Peak phenomenon, cause entire photovoltaic string formation real output reduce the technical issues of.The second aspect of the present invention proposes a kind of
The control method of the MPPT maximum power point tracking MPPT of photovoltaic generating system.
Specifically, as shown in fig. 7, the control method of the MPPT maximum power point tracking MPPT of the photovoltaic generating system, including：
Step S102：The luminous energy of the sun of acquisition is converted to direct current by photovoltaic module.
Step S104：Intelligent wiring box obtains the electricity data of the direct current of the photovoltaic module conversion, the electricity number
According to including at least one or more in voltage, electric current, power and temperature.
Step S106：Cloud processor receives the electricity data that the intelligent wiring box is sent, according to the electricity data meter
Calculation obtains the processing data of the photovoltaic module.
Step S108：Photovoltaic DC-to-AC converter receives the processing data that the cloud processor is sent, according to the processing data with
MPPT algorithm searches maximum power point.
Intelligent wiring box obtains the electricity data of the direct current of the photovoltaic module conversion also in one of the embodiments,
Including：When the electricity data for the photovoltaic module that microprogram control unit obtains leads normal, control switch unit is so that shutdown institute
State the electrical connection of photovoltaic module.
The processing data include at least quantity, the photovoltaic group of the photovoltaic module in one of the embodiments,
Average voltage, current average and the output power of part；The cloud processor receives the electricity that the intelligent wiring box is sent
Data, the processing data that the photovoltaic module is calculated according to the electricity data further include：The cloud processor is additionally operable to
The output power actual value for obtaining the photovoltaic module is determined when the output power actual value is less than the output power
There are wooden pail effects for the photovoltaic module；The monitoring module being connect with the cloud processor, for the system maintenance institute that alarms
State the photovoltaic module there are wooden pail effect.
The photovoltaic DC-to-AC converter receives the processing data that the cloud processor is sent in one of the embodiments, according to
The processing data and MPPT algorithm search the maximum power point：Receive the MPPT algorithm that the cloud processor is sent
Initial value sets the MPPT algorithm initial value of the MPPT algorithm.
In one of the embodiments, the photovoltaic module and the cloud processor and the photovoltaic DC-to-AC converter with it is described
The communication modes used between cloud processor is wired connection and/or wireless connections.
In conclusion implementing the embodiment of the present invention, will have the advantages that：
After the control method for using above-mentioned photovoltaic generating system and MPPT maximum power point tracking MPPT, intelligent wiring box
The electricity data of photovoltaic module is obtained, and electricity data is uploaded to cloud processor, cloud processor is calculated according to electricity data
Be sent to photovoltaic DC-to-AC converter to the processing data of photovoltaic module, then by processing data, photovoltaic DC-to-AC converter according to processing data and
MPPT algorithm searches maximum power point.The electricity data of photovoltaic module is handled according to cloud processor, determination leads to wooden pail effect
Photovoltaic module, and the lookup of maximum power point is based on processing data so that MPPT algorithm fast setting to certain in polymodal curve
One peak improves MPPT tracking velocities and precision, improves the wooden pail effect and multi-peaks phenomenon of photovoltaic string formation, to improve photovoltaic hair
The generated energy of electric system.
In the above-described embodiments, all or part of reality can be come by software, hardware, firmware or its arbitrary combination
It is existing.When being realized using software program, can entirely or partly realize in the form of a computer program product.The computer
Program product includes one or more computer instructions.When loading on computers and executing the computer program instructions, entirely
Portion is partly generated according to the flow or function described in the embodiment of the present invention.The computer can be all-purpose computer, specially
With computer, computer network or other programmable devices.The computer instruction can be stored in computer-readable storage
In medium, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the meter
The instruction of calculation machine can pass through wired (such as coaxial cable, light from a web-site, computer, server or data center
Fine, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, clothes
Business device or data center are transmitted.It is any available can be that computer can access for the computer readable storage medium
Medium is either comprising data storage devices such as one or more usable mediums integrated server, data centers.It is described to use
Medium can be magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as it is solid
State hard disk Solid State Disk (SSD)) etc..
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.
Claims (10)
1. a kind of photovoltaic generating system, which is characterized in that including：
Photovoltaic module, for the luminous energy of the sun of acquisition to be converted to direct current；
The intelligent wiring box being connect with the photovoltaic module, the electricity number of the direct current for obtaining the photovoltaic module conversion
According to the electricity data includes at least one or more in voltage, electric current, power and temperature；
The cloud processor being connect with the intelligent wiring box, the electricity data sent for receiving the intelligent wiring box, according to
The processing data of the photovoltaic module are calculated in the electricity data；
The photovoltaic DC-to-AC converter being connect with the cloud processor, the processing data sent for receiving the cloud processor, according to institute
It states processing data and MPPT algorithm searches maximum power point.
2. system according to claim 1, which is characterized in that the intelligent wiring box further includes：
Microprogram control unit, for when the electricity data of the photovoltaic module of acquisition leads normal, controlling and the microprogram control
The switch unit that device processed is connected with the photovoltaic module is so as to turn off the electrical connection of the photovoltaic module.
3. system according to claim 1, which is characterized in that the processing data include at least the number of the photovoltaic module
Amount, the average voltage of the photovoltaic module, current average and output power；
The cloud processor is additionally operable to obtain the output power actual value of the photovoltaic module, when the output power actual value is small
When the output power, determine that there are wooden pail effects for the photovoltaic module；
The monitoring module being connect with the cloud processor, for alarming, there are the photovoltaic groups of wooden pail effect described in the system maintenance
Part.
4. system according to claim 1, which is characterized in that the photovoltaic DC-to-AC converter is additionally operable to receive the cloud processor
The MPPT algorithm initial value of transmission sets the MPPT algorithm initial value of the MPPT algorithm.
5. system according to claim 1, which is characterized in that the photovoltaic module and the cloud processor and the light
The communication modes used between volt inverter and the cloud processor is wired connection and/or wireless connections.
6. the control method of the MPPT maximum power point tracking MPPT of photovoltaic generating system a kind of, which is characterized in that including：
The luminous energy of the sun of acquisition is converted to direct current by photovoltaic module；
Intelligent wiring box obtains the electricity data of the direct current of the photovoltaic module conversion, and the electricity data includes at least electricity
It is one or more in pressure, electric current, power and temperature；
Cloud processor receives the electricity data that the intelligent wiring box is sent, and the photovoltaic is calculated according to the electricity data
The processing data of component；
Photovoltaic DC-to-AC converter receives the processing data that the cloud processor is sent, and is searched most according to the processing data and MPPT algorithm
High-power point.
7. according to the method described in claim 6, it is characterized in that, the intelligent wiring box obtains the photovoltaic module conversion
The electricity data of direct current further includes：
When the electricity data for the photovoltaic module that microprogram control unit obtains leads normal, control switch unit is so that described in shutdown
The electrical connection of photovoltaic module.
8. according to the method described in claim 6, it is characterized in that, the processing data include at least the number of the photovoltaic module
Amount, the average voltage of the photovoltaic module, current average and output power；
The cloud processor receives the electricity data that the intelligent wiring box is sent, and is calculated according to the electricity data described
The processing data of photovoltaic module further include：
The output power actual value for obtaining the photovoltaic module, when the output power actual value is less than the output power,
Determine that there are wooden pail effects for the photovoltaic module；
The monitoring module being connect with the cloud processor, for alarming, there are the photovoltaic groups of wooden pail effect described in the system maintenance
Part.
9. according to the method described in claim 6, it is characterized in that, the photovoltaic DC-to-AC converter receives what the cloud processor was sent
Data are handled, searching maximum power point according to the processing data and MPPT algorithm further includes：
The MPPT algorithm initial value that the cloud processor is sent is received, the MPPT algorithm for setting the MPPT algorithm is initial
Value.
10. according to the method described in claim 6, it is characterized in that, the photovoltaic module and the cloud processor and the light
The communication modes used between volt inverter and the cloud processor is wired connection and/or wireless connections.
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| PCT/CN2017/077761 WO2018170803A1 (en) | 2017-03-22 | 2017-03-22 | Photovoltaic power generation system, and method for controlling maximum power point tracking (mppt) |
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