CN108233420A - A kind of photovoltaic solar system and its control method - Google Patents
A kind of photovoltaic solar system and its control method Download PDFInfo
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- CN108233420A CN108233420A CN201810101210.8A CN201810101210A CN108233420A CN 108233420 A CN108233420 A CN 108233420A CN 201810101210 A CN201810101210 A CN 201810101210A CN 108233420 A CN108233420 A CN 108233420A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000004146 energy storage Methods 0.000 claims abstract description 40
- 239000003990 capacitor Substances 0.000 claims description 30
- 230000005611 electricity Effects 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000010349 pulsation Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000013082 photovoltaic technology Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- H02J3/383—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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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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- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
This application discloses a kind of photovoltaic solar system and its control method, including：Photovoltaic module, the photovoltaic inversion component being connect with photovoltaic module and the capacitive energy storage component being connect with photovoltaic inversion component；Photovoltaic module for receiving light, converts light energy into direct current；Photovoltaic inversion component, for direct current to be converted to alternating current；Capacitive energy storage component, for the electric energy that photovoltaic inversion component transmits being converted and being stored when bright and clear, when light is inadequate by stored electric energy instantaneously output to photovoltaic inversion component.The application in photovoltaic inversion component front end due to increasing capacitive energy storage component, stored electric energy can instantaneously be exported when light is inadequate, can be used for making up in this way light it is inadequate when, when being instantaneously blocked such as light, caused by photovoltaic inversion component output pulsation the problem of, and then ensure photovoltaic solar system output electric energy stability.
Description
Technical field
The present invention relates to photovoltaic technology field, more particularly to a kind of photovoltaic solar system and its control method.
Background technology
Existing photovoltaic solar system is broadly divided into two kinds, and one kind is off-network type photovoltaic solar electricity generation system, i.e., too
The electric energy that positive energy photovoltaic system generates, which is directly fed, to be responsible for using or is stored using accumulator；Another is grid type light
Solar power system is lied prostrate, i.e., after solar energy system power generation, is fed directly to power grid.But there are certain limitations for both systems
Property, such as off-network type photovoltaic solar system, since electric energy of its generation is previously stored local, when sunlight abundance, local energy storage
When system is filled with, extra electric energy cannot be utilized, and cause to waste；And for parallel networking type photovoltaic solar energy system, electric energy
I.e. hair is needed to be delivered to power grid, at this point, grid-connected voltage is more stable, to the impact of entire power grid with regard to smaller.In addition, in the sun
During light transient change, influence that the output of photovoltaic solar system can be illuminated by the light, output electric energy is unstable.
Invention content
In view of this, the purpose of the present invention is to provide a kind of photovoltaic solar system and its control methods, it can be ensured that
Photovoltaic solar system exports the stability of electric energy.Its concrete scheme is as follows：
A kind of photovoltaic solar system, including：Photovoltaic module, the photovoltaic inversion component being connect with the photovoltaic module；Also
Including：The capacitive energy storage component being connect with the photovoltaic inversion component；
The photovoltaic module for receiving light, converts light energy into direct current；
The photovoltaic inversion component, for the direct current to be converted to alternating current；
The capacitive energy storage component, for converting the electric energy that the photovoltaic inversion component transmits when bright and clear
And store, stored electric energy is instantaneously exported to the photovoltaic inversion component when light is inadequate.
Preferably, in above-mentioned photovoltaic solar system provided in an embodiment of the present invention, the capacitive energy storage component includes：
Super capacitor and the DC/DC controllers being connect respectively with the photovoltaic inversion component and the super capacitor；
The DC/DC controllers, for controlling the power supply of the super capacitor；
The super capacitor under the action of the DC/DC controllers, stores electric energy when bright and clear, in light
Electric energy is instantaneously exported when line is inadequate.
Preferably, in above-mentioned photovoltaic solar system provided in an embodiment of the present invention, the photovoltaic inversion component includes：
The header box being connect with the photovoltaic module, the photovoltaic DC-to-AC converter being connect with the header box；
The header box for collecting the direct current of the photovoltaic module conveying, and is exported to the photovoltaic DC-to-AC converter；
The photovoltaic DC-to-AC converter, for carrying out the conversion of direct current and alternating current.
Preferably, in above-mentioned photovoltaic solar system provided in an embodiment of the present invention, the DC/DC controls implement body connects
It is connected to the cable end of the header box and the photovoltaic DC-to-AC converter.
Preferably, it in above-mentioned photovoltaic solar system provided in an embodiment of the present invention, further includes：Respectively with the photovoltaic
The accumulator of inverter connection and local load；
For storing electric energy when bright and clear, electric energy is discharged when light is inadequate to the local for the accumulator
Load.
Preferably, it in above-mentioned photovoltaic solar system provided in an embodiment of the present invention, further includes：With the photovoltaic inversion
The power grid of device connection；
The power grid, for having charged in bright and clear and described accumulator, the local load and the super capacitor
Electric energy is stored during completion, automatically to the local load supplying when inadequate in light and described accumulator releases electric energy.
The embodiment of the present invention additionally provides a kind of controlling party of above-mentioned photovoltaic solar system provided in an embodiment of the present invention
Method, including：
Photovoltaic module receives light, converts light energy into direct current；
The direct current is converted to alternating current by photovoltaic inversion component；
When bright and clear, the electric energy that the photovoltaic inversion component transmits is converted and is stored by capacitive energy storage component；
When light is inadequate, capacitive energy storage component instantaneously exports stored electric energy to the photovoltaic inversion component.
Preferably, in the control method of above-mentioned photovoltaic solar system provided in an embodiment of the present invention, the capacitance storage
Energy component includes：It super capacitor and connect respectively with the photovoltaic inversion component and the super capacitor and for described
The DC/DC controllers that the power supply of super capacitor is controlled.
Preferably, in the control method of above-mentioned photovoltaic solar system provided in an embodiment of the present invention,
When bright and clear, the electric energy that the photovoltaic inversion component transmits is converted and stores it by capacitive energy storage component
Before, it further includes：
The photovoltaic inversion component is simultaneously to local load and storage battery power supply；
When light is inadequate, after stored electric energy is instantaneously exported completion by capacitive energy storage component, further include：
The accumulator discharges electric energy to the local load.
Preferably, in the control method of above-mentioned photovoltaic solar system provided in an embodiment of the present invention,
When bright and clear, the electric energy that the photovoltaic inversion component transmits is converted and stores it by capacitive energy storage component
Afterwards, it further includes：
The photovoltaic inversion component is powered to power grid；
After inadequate in light and described accumulator releases electric energy, further include：
The power grid is automatically to the local load supplying.
A kind of photovoltaic solar system and its control method provided by the present invention, including：Photovoltaic module, with photovoltaic module
The photovoltaic inversion component of connection and the capacitive energy storage component being connect with photovoltaic inversion component；Photovoltaic module, for receiving light
Line converts light energy into direct current；Photovoltaic inversion component, for direct current to be converted to alternating current；Capacitive energy storage component, is used for
The electric energy that photovoltaic inversion component transmits is converted and stored when bright and clear, when light is inadequate by stored electricity
It can instantaneously export to photovoltaic inversion component.The present invention, can due to increasing capacitive energy storage component in photovoltaic inversion component front end
Stored electric energy is instantaneously exported when light is inadequate, can be used for making up in this way light it is inadequate when, as light is instantaneous
When being blocked, caused by photovoltaic inversion component output pulsation the problem of, and then ensure photovoltaic solar system output electric energy it is steady
It is qualitative.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, 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
The embodiment of invention, for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structure diagram of photovoltaic solar system provided in an embodiment of the present invention；
Fig. 2 is DC/DC control figures provided in an embodiment of the present invention；
Fig. 3 is one of control method flow chart of photovoltaic solar system provided in an embodiment of the present invention；
Fig. 4 is the two of the control method flow chart of photovoltaic solar system provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment 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 making creative work
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of photovoltaic solar system, as shown in Figure 1, including：Photovoltaic module 1, connect with photovoltaic module
Photovoltaic inversion component 2；It further includes：The capacitive energy storage component 3 being connect with photovoltaic inversion component 2；
Photovoltaic module 1 for receiving light, converts light energy into direct current；
Photovoltaic inversion component 2, for direct current to be converted to alternating current；
Capacitive energy storage component 3, for the electric energy that photovoltaic inversion component 2 transmits being converted and being deposited when bright and clear
Storage is instantaneously exported stored electric energy to photovoltaic inversion component 2 when light is inadequate.
In above-mentioned photovoltaic solar system provided in an embodiment of the present invention, including：Photovoltaic module is connect with photovoltaic module
Photovoltaic inversion component and the capacitive energy storage component that is connect with photovoltaic inversion component；Photovoltaic module, will for receiving light
Luminous energy is converted into direct current；Photovoltaic inversion component, for direct current to be converted to alternating current；Capacitive energy storage component, in light
The electric energy that photovoltaic inversion component transmits is converted and stored during micro USB foot, when light is inadequate by stored electric energy wink
When export to photovoltaic inversion component.Due to increasing capacitive energy storage component in photovoltaic inversion component front end, can not be filled in light
Stored electric energy is instantaneously exported when sufficient, can be used for making up in this way light it is inadequate when, when being instantaneously blocked such as light, make
Into photovoltaic inversion component output pulsation the problem of, and then ensure photovoltaic solar system output electric energy stability.
In the specific implementation, in above-mentioned photovoltaic solar system provided in an embodiment of the present invention, as depicted in figs. 1 and 2,
Capacitive energy storage component 3 can include：Super capacitor 31 and the DC/ being connect respectively with photovoltaic inversion component 2 and super capacitor 31
DC controllers 32；DC/DC controllers 32, for controlling the power supply of super capacitor 31；Super capacitor 31, in DC/
Under the action of DC controllers 32, electric energy is stored when bright and clear, electric energy is instantaneously exported when light is inadequate.
It should be noted that as shown in Fig. 2, super capacitor during charging, when solar panel generated output
When Pv is more than bearing power Pload, i.e. I1+I2 ＞ I3, dump power Pv-Pload, dump energy is controlled through two-way DC/DC
Device charges to super capacitor, if capacitance electricity is full of, stops charging, extra electricity is by photovoltaic inverter grid-connected；Super capacitor
During electric discharge, when solar panel does not generate electricity or generated output is less than bearing power, i.e. Pv ＜ Pload, i.e. I1+I2
During ＜ I3, demand power Pload-Pv, if super capacitor electricity is sufficient, super capacitor energy is through two-way DC/DC controllers
It discharges to dc bus.
In the specific implementation, in above-mentioned photovoltaic solar system provided in an embodiment of the present invention, as shown in Figure 1, photovoltaic
Inversion component 2 includes：The header box 21 being connect with photovoltaic module 1, the photovoltaic DC-to-AC converter 22 being connect with header box 21；Header box
21, for collecting the direct current of the conveying of photovoltaic module 1, and export to photovoltaic DC-to-AC converter 22；Photovoltaic DC-to-AC converter 22 is straight for carrying out
The conversion of galvanic electricity and alternating current.It should be noted that photovoltaic DC-to-AC converter is also equipped with electric energy distribution and managerial ability simultaneously.In addition,
One end of DC/DC controllers 32 can specifically be connected to the cable end of header box 21 and photovoltaic DC-to-AC converter 22, the other end with it is super
Capacitance interconnects.
In order to realize off-grid function, the electric energy of generation is preferentially delivered to local responsible use by photovoltaic DC-to-AC converter,
In the specific implementation, as shown in Figure 1, can also include：The accumulator 4 being connect respectively with photovoltaic DC-to-AC converter 22 and local load 5；
Accumulator 4 for storing electric energy when bright and clear, electric energy is discharged when light is inadequate to local load 5, is helped to improve
The electric energy output quality of photovoltaic DC-to-AC converter.
When electric energy has it is more than needed when, in order to realize grid-connected function, in the specific implementation, as shown in Figure 1, can also include：
The power grid 6 being connect with photovoltaic DC-to-AC converter 22；Power grid 6, in bright and clear and accumulator 4, local load 5 and super capacitor 31
Electric energy is stored during charging complete, automatically to local 5 power supply of load when and accumulator 4 inadequate in light releases electric energy.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of above-mentioned photovoltaic provided in an embodiment of the present invention too
The control method of positive energy system, since the principle that this method solves the problems, such as is similar to a kind of aforementioned photovoltaic solar system,
The implementation of this method may refer to the implementation of photovoltaic solar system, and overlaps will not be repeated.
In the specific implementation, the control method of photovoltaic solar system provided in an embodiment of the present invention, as shown in figure 3, tool
Body includes the following steps：
S301, photovoltaic module receive light, convert light energy into direct current；
Direct current is converted to alternating current by S302, photovoltaic inversion component；
S303, when bright and clear, the electric energy that photovoltaic inversion component transmits is converted and is stored by capacitive energy storage component；
S304, when light is inadequate, capacitive energy storage component by stored electric energy instantaneously output to photovoltaic inversion component.
In the control method of above-mentioned photovoltaic solar system provided in an embodiment of the present invention, due to capacitive energy storage component energy
It is enough instantaneously to export stored electric energy when light is inadequate, can be used for making up in this way light it is inadequate when, such as light wink
When being blocked, caused by photovoltaic inversion component output pulsation the problem of, and then ensure photovoltaic solar system output electric energy
Stability.
In the specific implementation, in the control method of above-mentioned photovoltaic solar system provided in an embodiment of the present invention, capacitance
Energy storage component includes：It super capacitor and connect respectively with photovoltaic inversion component and super capacitor and for super capacitor
The DC/DC controllers that power supply is controlled.
In the specific implementation, in the control method of above-mentioned photovoltaic solar system provided in an embodiment of the present invention, such as Fig. 4
Shown, when bright and clear, the electric energy that photovoltaic inversion component transmits is converted and is stored by step S303 capacitive energy storages component
Before, can also include：
S401, photovoltaic inversion component are simultaneously to local load and storage battery power supply；
When light is inadequate, after stored electric energy is instantaneously exported completion by step S304 capacitive energy storages component, also
It can include：
S402, accumulator discharge electric energy to local load.
Further, in the specific implementation, in the controlling party of above-mentioned photovoltaic solar system provided in an embodiment of the present invention
In method, as shown in figure 4, when bright and clear, the electric energy that step S303 capacitive energy storages component transmits photovoltaic inversion component carries out
After converting and storing, it can also include：
S403, photovoltaic inversion component are powered to power grid；
After in light, inadequate and accumulator releases electric energy, it can also include：
S404, power grid are automatically to local load supplying.
To sum up, in the control method of above-mentioned photovoltaic solar system provided in an embodiment of the present invention, can realize off-network and
Grid-connected two kinds of functions, specifically, when bright and clear (such as daylight is sufficient), photovoltaic solar system power generation is sufficient, system
Supply local load supplying and storage battery power supply simultaneously；If there is remaining electric energy, photovoltaic DC-to-AC converter can give remaining electric energy
Super capacitor charges；It after super capacitor is full of, is connected to the grid if still having remaining electric energy, principle is exactly " personal as possible "；
It is preferential with super when especially light catches sight of variation when light is inadequate (as evening dull thread or light are blocked)
Energy in grade capacitance gives local load supplying, it is ensured that photovoltaic DC-to-AC converter exports load the stability of electric energy, if super capacitor
It can not meet, storage battery energy releases the local load of supply, if after the energy in accumulator is given out light, photovoltaic DC-to-AC converter can be certainly
The dynamic power grid that switches to is to local load supplying.
A kind of photovoltaic solar system and its control method provided in an embodiment of the present invention, including：Photovoltaic module, with photovoltaic
The photovoltaic inversion component of component connection and the capacitive energy storage component being connect with photovoltaic inversion component；Photovoltaic module, for receiving
Light converts light energy into direct current；Photovoltaic inversion component, for direct current to be converted to alternating current；Capacitive energy storage component is used
The electric energy that photovoltaic inversion component transmits is converted and stored in when bright and clear, it will be stored when light is inadequate
Electric energy is instantaneously exported to photovoltaic inversion component.The present invention in photovoltaic inversion component front end due to increasing capacitive energy storage component, energy
It is enough instantaneously to export stored electric energy when light is inadequate, can be used for making up in this way light it is inadequate when, such as light wink
When being blocked, caused by photovoltaic inversion component output pulsation the problem of, and then ensure photovoltaic solar system output electric energy
Stability.
Finally, it is to be noted that, herein, relational terms be used merely to by an entity or operation with it is another
A entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this practical
Relationship or sequence.Moreover, term " comprising ", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion,
So that process, method, article or equipment including a series of elements not only include those elements, but also including not having
It the other element that is expressly recited or further includes as elements inherent to such a process, method, article, or device.Do not having
There is the element in the case of more limiting, limited by sentence "including a ...", it is not excluded that in the mistake for including the element
Also there are other identical elements in journey, method, article or equipment.
Photovoltaic solar system provided by the present invention and its control method are described in detail above, herein should
The principle of the present invention and embodiment are expounded with specific case, the explanation of above example is only intended to help to manage
Solve the method and its core concept of the present invention；Meanwhile for those of ordinary skill in the art, thought according to the present invention,
There will be changes in specific embodiment and application range, in conclusion the content of the present specification should not be construed as to this hair
Bright limitation.
Claims (10)
1. a kind of photovoltaic solar system, including：Photovoltaic module, the photovoltaic inversion component being connect with the photovoltaic module；It is special
Sign is, further includes：The capacitive energy storage component being connect with the photovoltaic inversion component；
The photovoltaic module for receiving light, converts light energy into direct current；
The photovoltaic inversion component, for the direct current to be converted to alternating current；
The capacitive energy storage component, for the electric energy that the photovoltaic inversion component transmits being converted and being deposited when bright and clear
Storage is instantaneously exported stored electric energy to the photovoltaic inversion component when light is inadequate.
2. photovoltaic solar system according to claim 1, which is characterized in that the capacitive energy storage component includes：It is super
Capacitance and the DC/DC controllers being connect respectively with the photovoltaic inversion component and the super capacitor；
The DC/DC controllers, for controlling the power supply of the super capacitor；
The super capacitor under the action of the DC/DC controllers, stores electric energy when bright and clear, in light not
Electric energy is instantaneously exported when sufficient.
3. photovoltaic solar system according to claim 2, which is characterized in that the photovoltaic inversion component includes：With institute
State the header box of photovoltaic module connection, the photovoltaic DC-to-AC converter being connect with the header box；
The header box for collecting the direct current of the photovoltaic module conveying, and is exported to the photovoltaic DC-to-AC converter；
The photovoltaic DC-to-AC converter, for carrying out the conversion of direct current and alternating current.
4. photovoltaic solar system according to claim 3, which is characterized in that the DC/DC controls implement body is connected to
The cable end of the header box and the photovoltaic DC-to-AC converter.
5. photovoltaic solar system according to claim 4, which is characterized in that further include：Respectively with the photovoltaic inversion
The accumulator of device connection and local load；
For storing electric energy when bright and clear, electric energy is discharged when light is inadequate to the local load for the accumulator.
6. photovoltaic solar system according to claim 5, which is characterized in that further include：Connect with the photovoltaic DC-to-AC converter
The power grid connect；
The power grid, in bright and clear and described accumulator, the local load and super capacitor charging complete
When store electric energy, automatically to the local load supplying when inadequate in light and described accumulator releases electric energy.
7. a kind of control method of the photovoltaic solar system as described in claim any one of 1-6, which is characterized in that including：
Photovoltaic module receives light, converts light energy into direct current；
The direct current is converted to alternating current by photovoltaic inversion component；
When bright and clear, the electric energy that the photovoltaic inversion component transmits is converted and is stored by capacitive energy storage component；
When light is inadequate, capacitive energy storage component instantaneously exports stored electric energy to the photovoltaic inversion component.
8. the control method of photovoltaic solar system according to claim 7, which is characterized in that the capacitive energy storage component
Including：It super capacitor and connect respectively with the photovoltaic inversion component and the super capacitor and for the super electricity
The DC/DC controllers that the power supply of appearance is controlled.
9. the control method of photovoltaic solar system according to claim 8, which is characterized in that
When bright and clear, before the electric energy that the photovoltaic inversion component transmits is converted and is stored by capacitive energy storage component,
It further includes：
The photovoltaic inversion component is simultaneously to local load and storage battery power supply；
When light is inadequate, after stored electric energy is instantaneously exported completion by capacitive energy storage component, further include：
The accumulator discharges electric energy to the local load.
10. the control method of photovoltaic solar system according to claim 9, which is characterized in that
When bright and clear, after the electric energy that the photovoltaic inversion component transmits is converted and is stored by capacitive energy storage component,
It further includes：
The photovoltaic inversion component is powered to power grid；
After inadequate in light and described accumulator releases electric energy, further include：
The power grid is automatically to the local load supplying.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113675935A (en) * | 2021-09-22 | 2021-11-19 | 中冶赛迪工程技术股份有限公司 | Photovoltaic power supply control method |
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