CN206807314U - A kind of photovoltaic DC-to-AC converter - Google Patents
A kind of photovoltaic DC-to-AC converter Download PDFInfo
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- CN206807314U CN206807314U CN201720730826.2U CN201720730826U CN206807314U CN 206807314 U CN206807314 U CN 206807314U CN 201720730826 U CN201720730826 U CN 201720730826U CN 206807314 U CN206807314 U CN 206807314U
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- plate
- boost
- photovoltaic
- inductance
- converter
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The utility model discloses a kind of photovoltaic DC-to-AC converter.It includes inverter box body and the circuit part being arranged in inverter box body, and space is separated into upper storehouse and lower storehouse in inverter box body, and upper storehouse is located at inverter box body away from backboard side；Circuit part includes：Controlig power board, DC filtering plate, Boost inversions plate, ac filter plate, exchange output board, dc switch, DC inductance and AC inductance；According to being arranged in successively clockwise or counterclockwise in a plane parallel with inverter box body backboard in upper storehouse, controlig power board is arranged in the space that DC filtering plate, Boost inversions plate, ac filter plate, exchange output board are surrounded in the plane for DC filtering plate, Boost inversions plate, ac filter plate, exchange output board.The utility model can effectively reduce functional module quantity, increase space availability ratio in inverter storehouse, and reduce the connecting line of weak electric signal between electric sub-member plate, improve the reliability of photovoltaic DC-to-AC converter.
Description
Technical field
It the utility model is related to a kind of photovoltaic DC-to-AC converter.
Background technology
With the fast development of New Energy Industry, solar photovoltaic inverter is increasingly popularized.The increasing of photovoltaic generation engineering
It is more so that inverter vendor increasingly pays close attention to the reliability, property easy to install and ease for maintenance of photovoltaic DC-to-AC converter.In inverter
Parts plate layout is generally modularization distribution, i.e., each functional part is all based on small modules installation, and such inverter is being tieed up
It is readily disassembled during shield, but because its modularization is thinner, installing space certainly will be increased, layout is difficult；And the electricity between module
Source, weak electric signal connecting line are more, can so influence its reliability.
Utility model content
Technical problem to be solved in the utility model is to overcome prior art insufficient, there is provided a kind of photovoltaic DC-to-AC converter,
Functional module quantity can be effectively reduced, increases space availability ratio in inverter storehouse, and reduce weak electric signal between electric sub-member plate
Connecting line, improve the reliability of photovoltaic DC-to-AC converter.
The utility model specifically solves above-mentioned technical problem using following technical scheme：
A kind of photovoltaic DC-to-AC converter, including inverter box body and the circuit part that is arranged in inverter box body, it is described inverse
Become space in device casing and be separated into upper storehouse and lower storehouse, upper storehouse is located at inverter box body away from backboard side；The circuit part
Including：Controlig power board, DC filtering plate, Boost inversions plate, ac filter plate, exchange output board, dc switch, direct current
Sense and AC inductance；Direct current caused by photovoltaic module accesses dc switch after the sample circuit of controlig power board, directly
Stream switch output is connected to DC filtering plate, then enters Boost inversion plates by DC inductance, is boosted and inversion, generation
Alternating current ac filter plate is flowed to by AC inductance, finally by exchange output board enter power network；DC filtering plate,
Boost inversions plate, ac filter plate, exchange output board according to being arranged in upper storehouse and inversion successively clockwise or counterclockwise
In a parallel plane of device casing backboard, controlig power board be arranged at DC filtering plate, Boost inversions plate, ac filter plate,
In the space that exchange output board is surrounded in the plane.
Preferably, DC inductance is arranged between DC filtering plate and Boost inversion plates, and is distinguished by the lead of itself
Electrically connected with DC filtering plate, Boost inversion plates；AC inductance is arranged between Boost inversions plate and ac filter plate, and is led to
The lead of itself is crossed to electrically connect with Boost inversions plate, ac filter plate respectively.
DC inductance and AC inductance may be contained within lower storehouse, and its lead enters upper storehouse by one group of waterproof terminal through walls；
DC inductance is electrically connected with DC filtering plate, Boost inversion plates respectively by the lead of itself, and AC inductance is drawn by itself
Line electrically connects with Boost inversions plate, ac filter plate respectively.
Preferably, controlig power board is electrically connected with Boost inversion plates by winding displacement, the two-way in Boost inversion plates
The Switching Power Supply that Boost circuit output is inputted in controlig power board after converging, the signaling control unit and two in controlig power board
Road Boost circuit and inverter circuit connection, are controlled to two-way Boost circuit and inverter circuit.
Further, the controlig power board has a detachable member：Fuse panel, one is provided with fuse panel
Group fuse.
Further, the position at upper storehouse center is provided with fan between controlig power board and Boost inversion plates.
Further, the circuit part also includes the sample circuit for electric current and voltage sample, the sample circuit
It is arranged in controlig power board.
Preferably, one group of hanging hole is provided with the inverter box body backboard, can be engaged with the installation backboard being adapted to by
Photovoltaic DC-to-AC converter suspension is fixed.
Preferably, the hanging hole is the irregularly-shaped hole formed by the circular combination of the oval and lower section of top, and long radius of circle is small
In the radius of circle.
Preferably, screwed hole is provided with the side wall of the inverter box body, the installation backboard has and inverter box
The adaptable special-shaped crimp of the side wall of body, the mounting hole closed with the corresponding threaded holes is offered on special-shaped crimp, can be by passing through
The screw assembly for wearing screwed hole and mounting hole mutually fixes the side wall of inverter box body and installation backboard.
Compared with prior art, the utility model has the advantages that：
Each electric sub-member plate is in same plane arrangement by the utility model, and by rational deployment, saves inverter storehouse
Interior space, and it is easily installed wiring.
The utility model is by the reasonable segmentation to electric sub-member plate, and suitably by inductance leads as electric sub-member plate
Between connecting line, reduce the use of power cable, save cost.
The reasonable segmentation that the utility model passes through electric sub-member plate so that control signal connecting line is reduced, that is, is saved into
This, and because control signal loop is small, improve the antijamming capability and reliability of inverter.
The utility model further provides a kind of extension wall mounting structure of inverter, enables to inverter installation more
It is convenient reliable.
Brief description of the drawings
Fig. 1 is the circuit connection structure block diagram of the utility model photovoltaic DC-to-AC converter；
Fig. 2 is the electric sub-member plate integral layout structure chart of the utility model photovoltaic DC-to-AC converter；
Fig. 3 is the layout structure figure of controlig power board；
Fig. 4 is the layout structure figure of direct current input filter plate；
Fig. 5 is the layout structure figure of Boost inversion plates；
Fig. 6 is the layout structure figure of exchange output filter band；
Fig. 7 is the layout structure figure of exchange output board；
Fig. 8 is the structural representation of installation backboard；
Fig. 9 is the extension wall mounting structure schematic diagram of inverter；
Figure 10 is the extension wall construction overall installation figure of inverter.
Each label implication is as follows in figure：
1st, controlig power board, 2, DC filtering plate, 3, DC filtering plate, 4, Boost inversion plates, 5, ac filter plate, 6,
Exchange output board, 7, dc switch, 8, terminal group through walls, 9, fan, 10, inverter box body, 11, installation backboard, 1-1, fusing
Device plate, 1-2, binding post, 1-3, binding post, 1-4, control signal interface, 2-1, the input of DC filtering plate 2,2-2,
The input of DC filtering plate 2,2-3, the output end of DC filtering plate 2,2-4, the output end of DC filtering plate 2,3-1, direct current
The input of filter band 3,3-2, the input of DC filtering plate 3,3-3, the output end of DC filtering plate 3,3-4, DC filtering
The output end of plate 3,4-1~4-4, Boost inversion plate inputs, 4-5~4-7, Boost inversion plate output ends, 4-8, control letter
Number interface, 4-9~4-12, driving power plate, 5-1~5-3, the input of ac filter plate 5,5-4~5-6, ac filter plate 5
Output end, 6-1~6-3, exchange output board input, 6-4, exchange output board output end, 8-1~8-3, end through walls
Son, 10-1, hanging hole, 10-2, screwed hole, 10-3, screw assemblies, 11-1, entablature, 11-2, sill, 11-3, web,
11-4, mounting hole, 11-5, pin rod, 11-6, special-shaped crimp, 11-7, waist-shaped hole.
Embodiment
The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings：
The circuit connection structure of photovoltaic DC-to-AC converter described in the utility model is as shown in figure 1, direct current caused by photovoltaic module
Dc switch is accessed after the sample circuit of controlig power board, dc switch output is connected to DC filtering plate, then by straight
Stream inductance enters Boost inversion plates, is boosted and inversion, caused alternating current flow to ac filter electricity by AC inductance
Road, finally enter power network, the output supply Switching Power Supply work of two-way Boost circuit, caused auxiliary by exchange output board
Power supply is used for circuit sampling, control chip etc..Connection between wherein each sub-circuit board uses inductance and wire connection, control electricity
Control signal on source plate is exported by winding displacement, to control Boost IGBT and inversion module.So, light current connection signal compared with
It is few, the functional reliability of photovoltaic DC-to-AC converter can be increased.
Reference picture 2, the inverter mainly include：Inverter box body 10 and the circuit being arranged in inverter box body 10
Part, space is separated into upper storehouse and lower storehouse in the inverter box body 10, and upper storehouse is located at inverter box body 10 away from backboard one
Side.Circuit part includes：Controlig power board 1, DC filtering plate 2 and DC filtering plate 3, Boost inversions plate 4, ac filter plate
5th, output board 6, dc switch 7, two-way DC inductance and AC inductance are exchanged.
As shown in Fig. 2 DC filtering plate 2 and 3, Boost inversions plate 4, ac filter plate 5, exchanging output board 6 according to up time
Pin direction（Also can be according to counterclockwise）It is arranged in a plane parallel with inverter box body backboard in upper storehouse, controls successively
Power panel 1 processed is arranged at DC filtering plate 2 and 3, Boost inversions plate 4, ac filter plate 5, exchanges output board 6 in the plane
In interior surrounded space.The two-way direct current input of inverter after the current sensor in controlig power board 1 by being respectively connected to
Two inputs of dc switch 7；Two outputs of dc switch 7 are connected to the input of DC filtering plate 2 and 3；DC filtering plate 2
Output with 3 is connected to by the lead of two-way DC inductance the input of Boost inversions plate 4；The output of Boost inversions plate 4 is led to
The lead for crossing AC inductance is connected to the input of ac filter plate 5；The output of ac filter plate 5 is connected to exchange output board 6
Input.The output of exchange output board 6 is used to be connected with power network.
In the present embodiment, DC inductance and AC inductance may be contained within lower storehouse, controlig power board 1 and Boost inversions
There are terminal group 8 through walls and fan 9 between plate 4.Terminal group 8 through walls includes one group of waterproof terminal 8-1~8-3 through walls, wherein through walls
Terminal 8-1,8-2 are used for DC inductance outlet；The terminal 8-3 through walls is used for AC inductance outlet；DC inductance and alternating current
The lead of sense enters upper storehouse by terminal group 8 through walls from lower storehouse.The fan 9 is arranged at close to middle position in upper storehouse, can
It is uniformly distributed temperature in storehouse.
Reference picture 3, the controlig power board 1 also include fuse panel 1-1, the fuse panel 1-1 and are fixed on control electricity
It is detachable member above source plate.When fuse panel 1-1 is installed on inverter, two-way direct current input positive pole borrows fuse
Terminal on plate is connected respectively to dc switch 7 after overcurrent fuse and DC current sensor by binding post 1-2,1-3
Positive input terminal；When not installing fuse panel 1-1, two-way direct current input positive pole is directly connected to the terminal in controlig power board 1
The positive input terminal of dc switch 7 is connected respectively to by binding post 1-2,1-3 after DC current sensor；Inverter two
Road direct current negative input is directly connected to the negative input end of dc switch 7.1-4 therein is control signal interface, for output control
Signal.
Reference picture 4, the output of the dc switch 7 be connected to DC filtering plate 2 and 3 input 2-1,2-2 and
3-1、3-2；Output end 2-3,2-4 and 3-3, the 3-4 of DC filtering plate 2 and 3 are connected with the input lead of DC inductance respectively.
Reference picture 5, the output lead of DC inductance respectively input 4-1,4-2 with the BOOST inversions plate 4,4-3,
4-4 is connected；Output end 4-5,4-6,4-7 of inversion plate 4 are connected with the input lead of AC inductance respectively.In the present embodiment
Boost inversions plate 4 includes driving power plate 4-9,4-10,4-11,4-12, described driving power plate 4-9,4-10,4-11,4-12
For the driving of two-way Boost circuit and three road inversion modules, it is vertically arranged on Boost inversions plate 4, can save PCB
Space.
Control signal interface 4-8 on the BOOST inversions plate 4 is connected in controlig power board 1 shown in Fig. 2 by winding displacement
Control signal interface 1-4.
Reference picture 6,7, the output lead of AC inductance input 5-1,5-2,5-3 with the ac filter plate 5 respectively
It is connected.Output end 5-4,5-5,5-6 of ac filter plate 5 and input 6-1,6-2,6-3 for exchanging output board shown in Fig. 6
It is connected；Exchange output board output end 6-4 is used to connect power network and PE.
Hang is used in the present embodiment, photovoltaic DC-to-AC converter is fixed by installing backboard 11.As shown in figure 8, the installation back of the body
Plate 11 forms I-shaped structure, entablature by entablature 11-1, sill 11-2 and web 11-3 by way of welding
11-1 and sill 11-2 is provided with pin rod 11-5 in installation backboard 11 upper and lower ends position, and pin rod 11-5 is straight by former and later two
The different cylindrical boss composition in footpath, front cylindrical boss diameter are more than back cylindrical boss, and front cylindrical boss
End face edge is provided with chamfering；It is special-shaped crimp 11-6 on the right side of entablature 11-1, special-shaped crimp 11-6 is provided with mounting hole 11-7；Peace
Dress backboard 11 is provided with multiple mounting hole 11-4 in entablature 11-1, sill 11-2 centre position.
As shown in figure 9, being provided with hanging hole 10-1 on inverter box body backboard, hanging hole 10-1 is the oval and lower section by top
The irregularly-shaped hole that forms of circular combination, the long radius of circle is less than circular radius.Inverter box body 10 is when hanging wall installation, peace
Dress backboard 11 is fixed on wall or metallic support by the mounting hole 11-4 above it, and the inverter is lifted to certain height
After degree and its right side wall is touched on the inside of the special-shaped crimp 11-6 of the installation backboard 11 entablature 11-1, while make the inversion
Device casing backboard keeps relatively short distance with the pin rod 11-5 end faces on installation backboard 11, and the extension on inverter box body backboard can be achieved
Hole 10-1 circular central and the cylindrical center of pin rod 11-5 on the installation backboard 11 keep in a straight line in vertical direction,
The entablature 11-1 of the installation backboard 11 special-shaped crimp 11-6 serves spacing effect here；Again by photovoltaic DC-to-AC converter
Make to finely tune up and down so that hanging hole 10-1 circular central is aligned and packed into the cylindrical center of pin rod 11-5 on installation backboard 11
Go, can by the inverter self gravitation after pin rod 11-5 front cylindrical boss passes through the circle of the hanging hole 10-1
So that in the side wall of its hanging hole 10-1 oval back cylindrical boss for falling on pin rod 11-5, so as to realize the extension wall of inverter
In place.Simultaneously after photovoltaic DC-to-AC converter successfully hangs wall, mounting hole 11-7 and inverter right side wall on the special-shaped crimp 11-6
On screwed hole 10-2 can realize that center is aligned, then through the mounting hole 11-7 and be tightened to described by screw assemblies 10-3
Screwed hole 10-2, so as to further realize the reliable fixation of inverter.Photovoltaic DC-to-AC converter after installation is as shown in Figure 10.
Claims (10)
1. a kind of photovoltaic DC-to-AC converter, including inverter box body and the circuit part that is arranged in inverter box body, the inversion
Space is separated into upper storehouse and lower storehouse in device casing, and upper storehouse is located at inverter box body away from backboard side；It is characterized in that, described
Circuit part includes：Controlig power board, DC filtering plate, Boost inversions plate, ac filter plate, exchange output board, direct current are opened
Pass, DC inductance and AC inductance；Direct current caused by photovoltaic module accesses directly after the sample circuit of controlig power board
Stream switch, dc switch output be connected to DC filtering plate, Boost inversion plates are then entered by DC inductance, carry out boosting with
Inversion, caused alternating current flow to ac filter plate by AC inductance, finally enter power network by exchange output board；Direct current is filtered
Ripple plate, Boost inversions plate, ac filter plate, exchange output board according to being arranged in upper storehouse successively clockwise or counterclockwise
In a plane parallel with inverter box body backboard, controlig power board is arranged at DC filtering plate, Boost inversions plate, exchange
In the space that filter band, exchange output board are surrounded in the plane.
2. photovoltaic DC-to-AC converter as claimed in claim 1, it is characterised in that it is inverse with Boost that DC inductance is arranged at DC filtering plate
Become between plate, and electrically connected respectively with DC filtering plate, Boost inversion plates by the lead of itself；AC inductance is arranged at
Between Boost inversions plate and ac filter plate, and it is electrically connected respectively with Boost inversions plate, ac filter plate by the lead of itself
Connect.
3. photovoltaic DC-to-AC converter as claimed in claim 1, it is characterised in that controlig power board is entered with Boost inversion plates by winding displacement
Row electrical connection.
4. photovoltaic DC-to-AC converter as claimed in claim 1, it is characterised in that the controlig power board has a detachable member：
Fuse panel, one group of fuse is provided with fuse panel.
5. photovoltaic DC-to-AC converter as claimed in claim 1, it is characterised in that DC inductance and AC inductance may be contained within lower storehouse,
Its lead enters upper storehouse by one group of waterproof terminal through walls；DC inductance by the lead of itself respectively with DC filtering plate,
Boost inversions plate is electrically connected, and AC inductance is electrically connected with Boost inversions plate, ac filter plate respectively by the lead of itself.
6. photovoltaic DC-to-AC converter as claimed in claim 1, it is characterised in that approached between controlig power board and Boost inversion plates
The position at upper storehouse center is provided with fan.
7. photovoltaic DC-to-AC converter as claimed in claim 1, it is characterised in that the circuit part also includes adopting for electric current and voltage
The sample circuit of sample, the sample circuit are arranged in controlig power board.
8. photovoltaic DC-to-AC converter as claimed in claim 1, it is characterised in that one group of extension is provided with the inverter box body backboard
Hole, it can be engaged to hang photovoltaic DC-to-AC converter with the installation backboard being adapted to and fix.
9. photovoltaic DC-to-AC converter as claimed in claim 8, it is characterised in that the hanging hole is by the circle of the oval and lower section of top
The irregularly-shaped hole combined, long radius of circle are less than circular radius.
10. photovoltaic DC-to-AC converter as claimed in claim 8, it is characterised in that be provided with screw thread in the side wall of the inverter box body
Hole, the installation backboard have the special-shaped crimp adaptable with the side wall of inverter box body, offered on special-shaped crimp with it is described
The mounting hole that corresponding threaded holes close, can be by the screw assembly through screwed hole and mounting hole by the side wall and peace of inverter box body
Dress backboard is mutually fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720730826.2U CN206807314U (en) | 2017-06-22 | 2017-06-22 | A kind of photovoltaic DC-to-AC converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720730826.2U CN206807314U (en) | 2017-06-22 | 2017-06-22 | A kind of photovoltaic DC-to-AC converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206807314U true CN206807314U (en) | 2017-12-26 |
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ID=60747654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720730826.2U Active CN206807314U (en) | 2017-06-22 | 2017-06-22 | A kind of photovoltaic DC-to-AC converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206807314U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111835209A (en) * | 2019-04-23 | 2020-10-27 | 台达电子工业股份有限公司 | Mounting assembly and inverter assembly suitable for same |
-
2017
- 2017-06-22 CN CN201720730826.2U patent/CN206807314U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111835209A (en) * | 2019-04-23 | 2020-10-27 | 台达电子工业股份有限公司 | Mounting assembly and inverter assembly suitable for same |
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