CN203734615U - High-efficiency photovoltaic module and high-efficiency photovoltaic power generation system - Google Patents
High-efficiency photovoltaic module and high-efficiency photovoltaic power generation system Download PDFInfo
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- CN203734615U CN203734615U CN201420098700.4U CN201420098700U CN203734615U CN 203734615 U CN203734615 U CN 203734615U CN 201420098700 U CN201420098700 U CN 201420098700U CN 203734615 U CN203734615 U CN 203734615U
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- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- 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
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Abstract
The utility model discloses a high-efficiency photovoltaic module and a high-efficiency photovoltaic power generation system. The photovoltaic module comprises a solar battery pack and a maximum power point tracking module, wherein the solar battery pack includes a plurality of solar batteries which are connected in series, and the maximum power point tracking module is connected with the solar battery pack and used for causing the solar battery pack to output at the maximum power. According to the utility model, the power generation efficiency of the photovoltaic power generation system is improved.
Description
Technical field
The utility model relates to photovoltaic field, in particular to the efficient photovoltaic module of one and photovoltaic generating system.
Background technology
In photovoltaic array, because the specified output parameter of each piece photovoltaic module is all inconsistent, and the output parameter of each piece photovoltaic module is also inconsistent with the Changing Pattern of external condition (illumination, temperature), the electrical parameter of the photovoltaic module that therefore serial or parallel connection is installed in photovoltaic array is unmatched, can cause like this energy loss, reduce the generating efficiency of photovoltaic generating system.In addition,, because the energy of loss discharges with the form of heat, the time has been grown can affect assembly life-span.Further, in photovoltaic module, because the specified output parameter of each piece solar cell piece is all inconsistent, and the output parameter of each piece solar cell piece is also inconsistent with the Changing Pattern of external condition (illumination, temperature), the electrical parameter of the solar cell piece that therefore serial or parallel connection is installed in photovoltaic module is also unmatched, can cause like this energy loss, reduce the conversion efficiency of photovoltaic module.In addition,, because the energy of loss discharges with the form of heat, the time has been grown the life-span that can affect solar cell piece.
When illumination on photovoltaic module inhomogeneous (shade or assembly surface spot), can there is hot spot effect in the region at the photovoltaic module being blocked, a small amount of blocking can cause a large amount of energy loss of whole photovoltaic generating system, and the assembly that hot spot effect occurs also can even damage in accelerated ageing.
For the low problem of the generating efficiency of photovoltaic generating system in prior art, effective solution is not yet proposed at present.
Utility model content
Main purpose of the present utility model is to provide a kind of photovoltaic module and photovoltaic generating system efficiently, to solve the low problem of generating efficiency of photovoltaic generating system.
To achieve these goals, according to an aspect of the present utility model, provide a kind of efficient photovoltaic module.Comprise according to photovoltaic module of the present utility model: solar battery group, comprises multiple solar battery sheets, multiple solar battery sheet series connection; And MPPT maximum power point tracking module, be connected with solar battery group, for controlling solar battery group with maximum power output.
Further, solar battery group is many group solar battery group, MPPT maximum power point tracking module is multiple MPPT maximum power point tracking modules, in many group solar battery group, each group solar battery group connects respectively a MPPT maximum power point tracking module in multiple MPPT maximum power point tracking modules, multiple MPPT maximum power point tracking module series connection.
Further, in MPPT maximum power point tracking module, be provided with direct current transducer, direct current transducer is predetermined current value for the current conversion that solar battery group is exported.
Further, direct current transducer comprises cathode output end and cathode output end, and photovoltaic module also comprises efficiently: diode, and the anode of diode is connected with direct current transducer cathode output end, and the negative electrode of diode is connected with direct current transducer cathode output end.
Further, any one solar battery sheet in multiple solar battery sheets is any cell piece in the sub-battery unit in monocrystalline silicon battery sheet, polycrystalline silicon battery plate, three or five compounds of group cell pieces and hull cell.
To achieve these goals, according on the other hand of the present utility model, provide a kind of efficient photovoltaic generating system.Comprise according to photovoltaic generating system of the present utility model: photovoltaic array, photovoltaic array comprises claim 1 to 5 any one photovoltaic module; And inversion mechanism, be connected with photovoltaic array, for the direct current of photovoltaic array output is converted into alternating current.
Further, photovoltaic array is multiple photovoltaic arrays, and inversion mechanism comprises: inversion control unit, is connected with multiple photovoltaic arrays, for controlling the quantity of photovoltaic array of series connection access; And inverter, be connected with inversion control unit.
Further, inversion control unit comprises: controlled change over switch group, is connected with photovoltaic array; Voltage acquisition module, is connected with photovoltaic array, for gathering the voltage of photovoltaic array output; And s operation control module, be connected respectively with voltage acquisition module with controlled change over switch group, for exporting the quantity of the controlled change over switch group access of control signal control photovoltaic array.
Further, controlled change over switch group comprises: multiple access interfaces, in multiple access interfaces, each access interface connects respectively a photovoltaic array.
Further, photovoltaic generating system comprises multiple inverters, and controlled change over switch group comprises multiple output interfaces, and in multiple output interfaces, each output interface connects respectively an inverter.
By the utility model, adopt solar battery group, comprise multiple solar battery sheets, multiple solar battery sheet series connection; And MPPT maximum power point tracking module, be connected with solar battery group, for controlling solar battery group with maximum power output, solve the low problem of generating efficiency of photovoltaic generating system, reach the effect that improves the generating efficiency of photovoltaic generating system.
Brief description of the drawings
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is according to the structural representation of the efficient photovoltaic module of the utility model embodiment;
Fig. 2 is a kind of preferred structural representation of photovoltaic module efficiently according to the utility model embodiment;
Fig. 3 a and Fig. 3 b are according to the schematic appearance of the efficient photovoltaic module of the utility model embodiment;
Fig. 4 is according to the schematic diagram of a kind of preferred photovoltaic generating system of the utility model embodiment; And
Fig. 5 a and Fig. 5 b are according to the scheme of installation of photovoltaic module in the photovoltaic generating system of the utility model embodiment.
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
In order to make those skilled in the art person understand better the utility model scheme, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of the utility model part, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all should belong to the scope of the utility model protection.
It should be noted that, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, for example, those steps or unit that process, method, system, product or the equipment that has comprised series of steps or unit is not necessarily limited to clearly list, but can comprise clearly do not list or for these processes, method, product or equipment intrinsic other step or unit.
The utility model embodiment provides a kind of efficient photovoltaic module, and this photovoltaic module can be in photovoltaic generating system.
Fig. 1 is according to the structural representation of the efficient photovoltaic module of the utility model embodiment.As shown in Figure 1, this photovoltaic module comprises in solar battery group 10(Fig. 1 shown in dotted line frame) and MPPT maximum power point tracking (Maximum Power Point Tracking is called for short MPPT) module 20.
Solar battery group 10 comprises multiple solar battery sheets 101, and multiple solar battery sheets 101 are connected.As shown in Figure 1, multiple solar battery sheets 101 form solar battery group 10 by series connection.Wherein, any one solar battery sheet in multiple solar battery sheets can be any cell piece in the sub-battery unit in monocrystalline silicon battery sheet, polycrystalline silicon battery plate, three or five compounds of group cell pieces and hull cell.Solar battery sheet in solar battery group can be all to adopt identical cell piece, can be also to adopt not identical cell piece.
MPPT maximum power point tracking module 20 is connected with solar battery group 10, and this MPPT module is used for controlling solar battery group 10 with maximum power output.MPPT module can be the MPPT controller being integrated on photovoltaic module.The function of MPPT module is to control solar battery group to be operated in maximum power point.Be connected respectively in MPPT module at the positive and negative electrode output of solar battery group 10, in MPPT module, can also be integrated with direct current transducer, the electric current that direct current transducer is exported solar battery group 10 is converted into identical current value, makes the formal output power of photovoltaic module with constant-current source by direct current transducer.MPPT module 20 comprises electrode input end and negative input, and electrode input end is connected with the positive pole of solar battery group 10, and negative input is connected with the negative pole of solar battery group 10.MPPT module 20 also comprises cathode output end and cathode output end, and wherein the cathode output end of MPPT module 20 can be used as the cathode output end of photovoltaic module, and the cathode output end of MPPT module 20 can be used as the cathode output end of photovoltaic module.
The solar battery group of the utility model embodiment can be one group also can be many groups, and it can be also multiple that corresponding MPPT module can be one, and wherein, each group solar battery group connects a MPPT module.
According to the utility model embodiment, solar battery sheet series connection is formed to solar battery group, be operated in maximum power point by MPPT module controls solar battery group, make in the time that part solar battery sheet is blocked, solar battery group still can be exported the peak power output that can export in the time that part solar battery sheet is blocked.Avoid causing the power output of other solar battery sheets to reduce because part solar battery sheet is blocked in prior art, thereby cause the low problem of generating efficiency of photovoltaic generating system, reached the effect that improves the generating efficiency of photovoltaic generating system.In addition, the efficient photovoltaic module of the utility model embodiment is with the formal output power of constant-current source, photovoltaic module is integrated by series connection, compare the constant-pressure type photovoltaic module integrated by parallel connection, the utility model can improve system voltage grade, reduce power loss, be suitable for and large Capacity Optical photovoltaic generating system application.
Preferably, the solar battery group of the utility model embodiment is many group solar battery group, MPPT maximum power point tracking module is multiple MPPT maximum power point tracking modules, in many group solar battery group, each group solar battery group connects respectively a MPPT maximum power point tracking module in multiple MPPT maximum power point tracking modules, multiple MPPT maximum power point tracking module series connection.
As shown in Figure 2, solar battery group 10 is many group solar battery group, and MPPT module 20 is multiple MPPT modules.Wherein, every group of solar battery group comprises multiple solar cell pieces, and solar cell piece can be monocrystalline silicon or polycrystalline silicon battery plate, can be also three or five compounds of group battery chips, can be also the sub-battery unit in hull cell.Solar cell piece is divided into N group (N is integer, and N is more than or equal to 1), and every group of solar cell piece is connected to form battery pack string with series connection form, i.e. solar battery group, the positive and negative electrode output access MPPT module of solar battery group.The function of MPPT module is to control solar battery group to be operated in maximum power point, and with the formal output power of constant-current source.MPPT module number is consistent with solar battery group quantity, and N MPPT module connects by series connection form and form positive and negative the two poles of the earth output.
According to the utility model embodiment, in photovoltaic module due to each group solar battery group have independently MPPT module controls, in the time blocking operating mode, the solar battery group that is blocked will be sent the maximum power that it can send under the condition of blocking, the electric energy of other solar battery group output is simultaneously completely unaffected, avoid existing photovoltaic module due to the problem that the image of the solar battery group being blocked causes other solar battery group power outputs that are not blocked to reduce, effectively suppressed to block the power output loss causing.Final photovoltaic module can be realized maximum integrated power output, drops to minimum by blocking the power loss causing.
Preferably, be provided with direct current transducer (DC/DC) (not shown) in MPPT maximum power point tracking module, this direct current transducer can be connected with solar battery group, is predetermined current value for the current conversion that MPPT maximum power point tracking module is exported.When MPPT module is multiple, in each MPPT module, be provided with direct current transducer, can be for the electric current of multiple different MPPT maximum power point tracking modules outputs be all converted into identical current value, i.e. predetermined current value.Wherein, predetermined current value can arrange by direct current transducer setting.
It should be noted that, direct current transducer can be the functional module being integrated in MPPT module, can be also the integrated functional module being independent of outside MPPT module.
Alternatively, photovoltaic module also comprises multiple direct current transducer (not shown)s.In the plurality of direct current transducer, each direct current transducer connects a MPPT maximum power point tracking module in multiple MPPT maximum power point tracking modules, and it is identical current value that multiple direct current transducers are used for the current conversion of organizing solar battery group output more.
Preferably, direct current transducer comprises cathode output end and cathode output end, and photovoltaic module also comprises diode, and the anode of this diode is connected with direct current transducer cathode output end, and the negative electrode of diode is connected with direct current transducer cathode output end.
In the time that direct current transducer is arranged in MPPT module, the direct current transducer of the utility model embodiment comprises cathode output end and cathode output end, photovoltaic module also comprises diode, the anode of diode is connected with direct current transducer cathode output end, and the negative electrode of diode is connected with direct current transducer cathode output end.
As shown in Figure 2, the anode of diode 30 is connected with the cathode output end of the direct current transducer in MPPT module 20, and the negative electrode of diode 30 is connected with the cathode output end of direct current transducer in MPPT module 20.In the time that MPPT module is multiple MPPT module, diode is multiple diodes, and each MPPT module is provided with direct current transducer, and the direct current transducer in each MPPT module connects a diode.When certain or multiple MPPT module failure or while exporting without electric energy, can form forward bias at diode two ends corresponding to this MPPT module and make this diode current flow, the operating current of MPPT module string can be walked around fault or export MPPT module without electric energy, avoid the problem that causes the circuit in whole photovoltaic module to interrupt due to MPPT module failure, and do not affect the normal work of photovoltaic module and the normal output of electric energy.
Fig. 3 a and Fig. 3 b are according to the schematic appearance of the efficient photovoltaic module of the utility model embodiment.Fig. 3 a is photovoltaic module front (side to light), comprises solar battery sheet and connecting line etc. thereof.Fig. 3 b is the photovoltaic module back side (shady face).3-1 is the terminal box of photovoltaic module, can be packaged with the MPPT module 20 shown in Fig. 2 and diode 30 in terminal box 3-1, and exports positive and negative polarities binding post 3-2.In the utility model embodiment, the wiring between all MPPT modules, diode and MPPT module and diode is encapsulated in the terminal box 3-1 at the photovoltaic module back side completely.Opto-electronic conversion is carried out in the front that in the utility model embodiment, all solar battery sheets are encapsulated in photovoltaic module.
The utility model embodiment also provides a kind of efficient photovoltaic generating system, this photovoltaic generating system can adopt the photovoltaic group of the utility model embodiment, certainly, the efficient photovoltaic module of the utility model embodiment also can be for the photovoltaic generating system of the utility model embodiment.The photovoltaic generating system of the utility model embodiment comprises photovoltaic array and inversion mechanism, and photovoltaic array comprises the efficient photovoltaic module of the utility model embodiment.Wherein, photovoltaic array can comprise multiple photovoltaic modulies, and inversion mechanism is connected with photovoltaic array, for the direct current of photovoltaic array output is converted into alternating current.Inversion mechanism can be the concentrating type inversion system that adopts multiple inverter compositions.
According to the utility model embodiment, by adopting the efficient photovoltaic module of the utility model embodiment, solar battery sheet is connected, make the output current of each solar battery sheet identical, be operated in maximum power point by MPPT module controls solar battery group, make in the time that part solar battery sheet is blocked, solar battery group still can be exported the peak power output that can export in the time that part solar battery sheet is blocked.Avoid in prior art, cause the power output of other solar battery sheets to reduce because part solar battery sheet is blocked, thereby cause the low problem of generating efficiency of photovoltaic generating system, reached the effect that improves the generating efficiency of photovoltaic generating system.In addition, the photovoltaic module of the utility model embodiment, with the formal output power of constant-current source, can be connected integrated, improves system voltage grade, reduces power loss.
Preferably, photovoltaic array is multiple photovoltaic arrays, and inversion mechanism comprises inversion control unit and inverter.Wherein, inversion control unit is connected with multiple photovoltaic arrays, and inversion control unit is used for the quantity of the photovoltaic array of controlling series connection access.Inverter is connected with inversion control unit.Inverter can be multiple inverters, and inversion control unit is the control centre of inversion mechanism, can be for controlling the data of photovoltaic array and the quantity of the current inverter that need to be connected of series connection access.
The photovoltaic module of the utility model embodiment is a kind of constant current assembly, in the time that photovoltaic generating system is integrated, photovoltaic module adopts and is connected in series, because each photovoltaic array actual output voltage is difficult to ensure unanimously, therefore cannot use header box to carry out tandem and access again inverter.
For addressing the above problem, the photovoltaic generating system of the utility model embodiment uses and can use a concentrating type inversion system of multiple inverter composition, this concentrating type inversion system calculates by contrasting the input voltage of photovoltaic array and the input power of photovoltaic array and inverter operating voltage range and optimum operating power the inverter quantity that needs input under current working, the intervention of control inverter and picking out, and further calculate the working method of power supply, power supply electric energy is sent to respectively to the inverter that s operation control module is distributed.
Fig. 4 is according to the schematic diagram of a kind of preferred photovoltaic generating system of the utility model embodiment.As shown in Figure 4, this photovoltaic generating system comprises photovoltaic array 401, photovoltaic array 402, photovoltaic array 403 and inversion mechanism 50, and in figure, photovoltaic array is empty wire frame representation.Photovoltaic array 401 comprises the photovoltaic module of the utility model embodiment.Wherein, photovoltaic array 401 can comprise multiple photovoltaic modulies, and photovoltaic array 401 comprises n the photovoltaic modulies such as photovoltaic module PV1, photovoltaic module PV2, photovoltaic module PV3, photovoltaic module PVn, and wherein, n is more than or equal to 3.Inversion mechanism 50 comprises inversion control unit and inverter 51.Inverter 51 is for being converted to alternating current (AC) by direct current (DC).
As shown in Figure 4, inversion control unit comprises controlled change over switch group 521, voltage acquisition module (not shown) and s operation control module 522.Controlled change over switch group 521 is connected with photovoltaic array.Voltage acquisition module is connected with photovoltaic array, for gathering the voltage of photovoltaic array output.S operation control module 522 is connected respectively with voltage acquisition module with controlled change over switch group 521, accesses the quantity of photovoltaic array for exporting the controlled change over switch group 521 of control signal control.
Particularly, voltage acquisition module gathers the voltage of multiple photovoltaic arrays simultaneously and the voltage signal collecting is sent into s operation control module.S operation control module calculates the quantity of the photovoltaic array that needs the inverter quantity of input and needs series connection under current working by contrasting the input voltage of photovoltaic array and the input power of photovoltaic array and inverter operating voltage range and optimum operating power, and further calculate the connected mode of controlled change over switch group, export control signal to controlled change over switch group.After controlled change over switch group reception control signal, adjust connection status, the photovoltaic array series connection of access is formed to one or more groups power supply, and the electric energy of the power supply of formation is sent to respectively to the inverter that s operation control module is distributed.
Preferably, controlled change over switch group comprises multiple access interfaces, and in the plurality of access interface, each access interface connects respectively a photovoltaic array.Photovoltaic generating system comprises multiple inverters, and controlled change over switch group comprises multiple output interfaces, and in multiple output interfaces, each output interface connects respectively an inverter.
As shown in Figure 4, controlled change over switch group 521 comprises access interface 5211 and output interface 5212, and wherein, access interface can be multiple access interfaces, and output interface can be multiple output interfaces.
Because the photovoltaic module of the utility model embodiment is a kind of constant current assembly, in the time that photovoltaic generating system is integrated, photovoltaic module adopts and is connected in series, and in photovoltaic generating system, each photovoltaic array can extremely be determined according to the operating voltage of inverter etc. the photovoltaic module number of series connection.The rated operational voltage of general single photovoltaic array is in 600-1000V scope, and real work voltage is in 100-1000V scope, single photovoltaic array power 3-50kW.
The photovoltaic generating system of the utility model embodiment uses N platform (N can in 2-30 platform scope) small-power (for example 3-50kW) inverter concentrating type inversion system of composition (as the inversion mechanism 50 in Fig. 4), and single concentrating type inversion system capacity is at 100-1000kW.Inversion mechanism also comprises an inversion control unit except inverter.Inversion control unit mainly comprises N access interface, a N output interface, controlled change over switch group, voltage acquisition module and Operations Analysis etc.In the course of work, N opposed inlet is connected with N photovoltaic array respectively, and N connects respectively at N platform inverter delivery outlet.Voltage acquisition module gathers N to the magnitude of voltage of access interface simultaneously and this voltage value signal is sent into Operations Analysis.Operations Analysis calculates the quantity of the access interface that needs the inverter quantity of input and needs series connection under current working by contrasting the input voltage of photovoltaic array and the input power of photovoltaic array and inverter operating voltage range and optimum operating power, and further calculate the connected mode of controlled change over switch group, export control signal to controlled change over switch group.Controlled change over switch group is adjusted connection status after receiving signal, the input power of access interface is pressed to appropriate ways series connection and form one or more groups power supply, and power supply electric energy is sent to respectively to the inverter that s operation control module is distributed.
To sum up, the advantage of the photovoltaic generating system of the utility model embodiment is: input amount that 1, can dynamic adjustments inverter, improve invertor operation efficiency, and reduce the inverter non-productive work time; 2, the damage of single inverter or maintenance do not affect the normal operation of whole system, and the stability of a system is splendid.3, can extend operating time day of whole photovoltaic generating system, but the day work time decreased of single inverter improves every daily generation, improve inverter useful life simultaneously.
Fig. 5 a and Fig. 5 b are according to the scheme of installation of photovoltaic array in the photovoltaic generating system of the utility model embodiment.As shown in the figure, the front view that Fig. 5 a is photovoltaic array, the rear view that Fig. 5 b is photovoltaic array, in this embodiment, photovoltaic module is transversely arranged, and in photovoltaic module, the closure of solar battery group is parallel to ground.In photovoltaic module use procedure, shade or the dirt accumulation of front-seat array easily occur in photovoltaic module near ground one side, if the closure of solar battery group is perpendicular to ground, each group solar battery group all may have one or more pieces batteries to be hidden, and all solar battery group power outputs are reduced.In the time that solar battery group closure is parallel to ground, institute's shield portions only can affect solar battery group successively from the lowermost end of photovoltaic module.In existing photovoltaic module, because all solar battery sheets are connected and do not have MPPT to control, no matter how assembly is installed is all difficult to suppress the power output loss that shade causes.At the utility model, embodiment proposes in photovoltaic module, because all having independently MPPT, each group solar battery group controls, in the time that photovoltaic module blocks, the solar battery group that is blocked will be sent the maximum power that it can send under the condition of blocking, the output of other solar battery group is completely unaffected simultaneously, final photovoltaic module can be realized maximum integrated power output, by block the power loss causing drop to minimum, the advantage of giving full play to the utility model embodiment and carrying out MPPT control in solar battery group.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. an efficient photovoltaic module, is characterized in that, comprising:
Solar battery group, comprises multiple solar battery sheets, described multiple solar battery sheet series connection; And
MPPT maximum power point tracking module, is connected with described solar battery group, for controlling described solar battery group with maximum power output.
2. photovoltaic module according to claim 1, it is characterized in that, described solar battery group is many group solar battery group, described MPPT maximum power point tracking module is multiple MPPT maximum power point tracking modules, in described many group solar battery group, each group solar battery group connects respectively a MPPT maximum power point tracking module in described multiple MPPT maximum power point tracking module, described multiple MPPT maximum power point tracking module series connection.
3. photovoltaic module according to claim 2, is characterized in that, in described MPPT maximum power point tracking module, is provided with direct current transducer, and described direct current transducer is predetermined current value for the current conversion that described solar battery group is exported.
4. photovoltaic module according to claim 3, is characterized in that, described direct current transducer comprises cathode output end and cathode output end, and described efficient photovoltaic module also comprises:
Diode, the anode of described diode is connected with described direct current transducer cathode output end, and the negative electrode of described diode is connected with described direct current transducer cathode output end.
5. according to the photovoltaic module described in claim 1 to 4 any one, it is characterized in that, any one solar battery sheet in described multiple solar battery sheets is any cell piece in the sub-battery unit in monocrystalline silicon battery sheet, polycrystalline silicon battery plate, three or five compounds of group cell pieces and hull cell.
6. an efficient photovoltaic generating system, is characterized in that, comprising:
Photovoltaic array, described photovoltaic array comprises photovoltaic module described in claim 1 to 5 any one; And
Inversion mechanism, is connected with described photovoltaic array, for the direct current of described photovoltaic array output is converted into alternating current.
7. photovoltaic generating system according to claim 6, is characterized in that, described photovoltaic array is multiple photovoltaic arrays, and described inversion mechanism comprises:
Inversion control unit, is connected with described multiple photovoltaic arrays, for controlling the quantity of described photovoltaic array of series connection access; And
Inverter, is connected with described inversion control unit.
8. photovoltaic generating system according to claim 7, is characterized in that, described inversion control unit comprises:
Controlled change over switch group, is connected with described photovoltaic array;
Voltage acquisition module, is connected with described photovoltaic array, for gathering the voltage of described photovoltaic array output; And
S operation control module, is connected respectively with described voltage acquisition module with described controlled change over switch group, accesses the quantity of described photovoltaic array for exporting controlled change over switch group described in control signal control.
9. photovoltaic generating system according to claim 8, is characterized in that, described controlled change over switch group comprises:
Multiple access interfaces, in described multiple access interfaces, each access interface connects respectively a described photovoltaic array.
10. photovoltaic generating system according to claim 8, it is characterized in that, described photovoltaic generating system comprises multiple inverters, and described controlled change over switch group comprises multiple output interfaces, and in described multiple output interfaces, each output interface connects respectively a described inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420098700.4U CN203734615U (en) | 2014-03-05 | 2014-03-05 | High-efficiency photovoltaic module and high-efficiency photovoltaic power generation system |
Applications Claiming Priority (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825548A (en) * | 2014-03-05 | 2014-05-28 | 中国华能集团清洁能源技术研究院有限公司 | High-efficiency photovoltaic module and photovoltaic power generation system |
| CN109742936A (en) * | 2019-01-18 | 2019-05-10 | 天津科林电气有限公司 | A kind of photovoltaic DC-to-AC converter MPPT Restart mechanisms |
| CN112260382A (en) * | 2020-10-15 | 2021-01-22 | 深圳天眼新能源科技有限公司 | Solar power generation capacity expansion management system and method |
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2014
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825548A (en) * | 2014-03-05 | 2014-05-28 | 中国华能集团清洁能源技术研究院有限公司 | High-efficiency photovoltaic module and photovoltaic power generation system |
| CN109742936A (en) * | 2019-01-18 | 2019-05-10 | 天津科林电气有限公司 | A kind of photovoltaic DC-to-AC converter MPPT Restart mechanisms |
| CN112260382A (en) * | 2020-10-15 | 2021-01-22 | 深圳天眼新能源科技有限公司 | Solar power generation capacity expansion management system and method |
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