CN115297698A - Photovoltaic grid-connected inverter with self-adaptive heat dissipation capacity - Google Patents
Photovoltaic grid-connected inverter with self-adaptive heat dissipation capacity Download PDFInfo
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- CN115297698A CN115297698A CN202211062162.9A CN202211062162A CN115297698A CN 115297698 A CN115297698 A CN 115297698A CN 202211062162 A CN202211062162 A CN 202211062162A CN 115297698 A CN115297698 A CN 115297698A
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 49
- 239000000428 dust Substances 0.000 claims abstract description 70
- 230000006698 induction Effects 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims description 14
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 238000009835 boiling Methods 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract 1
- 230000009471 action Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20945—Thermal management, e.g. inverter temperature control
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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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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a photovoltaic grid-connected inverter with self-adaptive heat dissipation capacity, which comprises an inverter cabinet, and a sensing tube, an inverter module and a supporting cylinder which are arranged in the inverter cabinet; the inversion cabinet comprises a bottom plate, a top plate, a first side plate and a second side plate, wherein the bottom plate and the top plate are arranged oppositely, and the first side plate and the second side plate are arranged between the bottom plate and the top plate oppositely; the one end and the laminating of contravariant module of induction tube set up for heat to the contravariant module is responded to in real time, and when the heat of contravariant module riseed, the liquid boiling inflation of induction tube inner wall promoted the support cylinder of being connected with the other end of induction tube and moved to the roof in the direction of perpendicular to bottom plate, makeed the support cylinder promote electrically conductive dust screen motion, makeed second curb plate and roof be in the state of opening. The invention improves the heat dissipation and dust removal performance of the inverter and ensures that the inverter can work efficiently in a high-temperature environment.
Description
Technical Field
The invention belongs to the technical field of inverters, and particularly relates to a photovoltaic grid-connected inverter with self-adaptive heat dissipation capacity.
Background
The grid-connected inverter is a special inverter, except for converting direct current into alternating current, the alternating current output by the grid-connected inverter can be synchronous with the frequency and phase of commercial power, so that the output alternating current can return to the commercial power.
The heat dissipation system of the grid-connected inverter mainly comprises a radiator, a cooling fan, heat-conducting silicone grease and other materials, and the heat dissipation modes of the existing inverter mainly comprise two modes: natural cooling and forced air cooling. In a scene with a power level of more than 50KW, a forced air cooling heat dissipation mode is adopted. However, in this way, since the inside of the grid-connected inverter is sufficiently contacted with flowing air, dust is uniformly distributed in all places inside the grid-connected inverter, so that the heat dissipation condition is deteriorated, and the heat dissipation performance is greatly affected.
Disclosure of Invention
The invention aims to provide a photovoltaic grid-connected inverter with self-adaptive heat dissipation capability, and solves the problem that dust is easily accumulated in the inverter and the heat dissipation effect is poor when the conventional grid-connected inverter dissipates heat by forced air cooling.
The invention discloses a photovoltaic grid-connected inverter with self-adaptive heat dissipation capacity, which comprises an inverter cabinet, and an induction tube, an inverter module and a support cylinder which are arranged in the inverter cabinet;
the inversion cabinet comprises a bottom plate, a top plate, a first side plate and a second side plate, wherein the bottom plate and the top plate are arranged oppositely, and the first side plate and the second side plate are arranged between the bottom plate and the top plate oppositely;
one end of the induction pipe is attached to the inversion module and used for sensing the heat of the inversion module in real time, when the heat of the inversion module rises, liquid on the inner wall of the induction pipe boils and expands to push the supporting cylinder connected with the other end of the induction pipe to move towards the top plate in the direction perpendicular to the bottom plate, so that the supporting cylinder pushes the conductive dustproof net to move, and the second side plate and the top plate are in an open state.
Furthermore, a power supply contact is arranged on the side face, close to the bottom plate, of the top plate, and when the conductive dustproof net is in contact with the power supply contact, the conductive dustproof net is conducted, so that the floating dust in the inverter cabinet is subjected to electrostatic adsorption by the conductive dustproof net.
Further, when the heat of contravariant module reduces, the liquid of induction pipe inner wall tends to normal atmospheric temperature, makes support cylinder drives electrically conductive dust screen moves back and resets, just electrically conductive dust screen breaks away from the power supply contact, it drops to being located to adsorb the dust on the electrically conductive dust screen holding tank in the bottom plate.
Further, be provided with the slide on the second curb plate, sliding connection has the draw runner on the slide, the draw runner is connected electrically conductive dust screen.
Furthermore, a heat radiation fan is arranged in the second side plate, and the heat radiation fan is arranged opposite to the conductive dustproof net; the conductive dustproof net is attached to the outer side of the second side face, and the length of the conductive dustproof net relative to the second side face is not smaller than the length of the cooling fan relative to the second side face.
Furthermore, the heat dissipation fan, the conductive dust screen and the inner wall of the second side plate form a cavity;
one end of the supporting cylinder is connected with the conductive dustproof net, and the other end of the supporting cylinder is embedded in and protrudes out of the bottom plate.
Furthermore, a plurality of ventilation holes arranged side by side are formed in the first side plate, so that the heat dissipation fan can be used for bringing the heat inside the inverter cabinet to the outside of the inverter cabinet through the ventilation hole.
Further, the first side plate and the second side plate are hinged with the top plate; the induction pipe is connected with the supporting cylinder through a guide pipe.
Further, all be provided with the backup pad on the first curb plate with on the second curb plate, the backup pad all is connected with articulated seat, articulated seat is all articulated the roof.
Furthermore, a main control board is arranged on the bottom board, and a direct current input terminal, the inverter module, a current sensor and a microcontroller are arranged on the main control board; the main control board is electrically connected with the direct current input terminal, the inversion module, the current sensor and the microcontroller respectively; the inversion module is electrically connected with the microcontroller through the current sensor; the microcontroller and the direct current input terminal are respectively electrically connected with the inverter module.
Due to the adoption of the technical scheme, the invention has the following advantages: according to the method, the induction tube is arranged, real-time induction can be conducted on the heat of the IGBT inversion module, when the heat of the IGBT inversion module is high, low-boiling-point liquid on the inner wall of the induction tube boils and expands, the supporting cylinder is further pushed to stretch and move, the supporting cylinder is made to push the conductive dustproof net to slide, the side plate is made to be in an open state, the top plate is pushed to open under the hinged relation, the effect of the radiating fan is matched, the radiating effect of the inverter is improved, when the conductive dustproof net is in contact with the power supply contact, static adsorption can be conducted on floating dust inside the inverter, the radiating performance and the dust removal performance of the inverter are greatly improved, the inverter can be guaranteed to normally work under a high-temperature environment, and the problem that the traditional inverter is low in working efficiency under the high-temperature environment is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings.
Fig. 1 is a schematic diagram of a grid-connected inverter according to an embodiment of the present invention;
FIG. 2 is a side view of the conductive dust screen of FIG. 1;
fig. 3 is a schematic circuit connection diagram of the grid-connected inverter according to the embodiment of the present invention.
Reference numerals:
the device comprises a bottom plate-1, side plates-2, a main control board-3, a direct current input terminal-4, an IGBT inverter module-5, a current sensor-6, a microcontroller-7, a heat dissipation mechanism-8, a vent-81, a heat dissipation fan-82, a conductive dust screen-83, a slide bar-84, a slide seat-85, a dust accommodating groove-86, a supporting cylinder-87, an induction pipe-88, a supporting plate-89, a hinged seat-891, a top plate-892 and a power supply contact-893.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, it being understood that the examples described are only some of the examples and are not intended to limit the invention to the embodiments described herein. All other embodiments available to those of ordinary skill in the art are intended to be within the scope of the embodiments of the present invention.
It should be noted that, in the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "fixed" and the like are to be understood in a broad sense, and for example, may be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
As shown in fig. 1, fig. 2, and fig. 3, this embodiment provides a large-scale photovoltaic grid-connected inverter based on adaptive heat dissipation capability, including a bottom plate 1, a side plate 2 is fixedly connected to the bottom plate 1, the side plate 2 includes a first side plate and a second side plate that are oppositely disposed, a main control plate 3 is disposed on the bottom plate 1, a dc input terminal 4 is disposed on the main control plate 3, an IGBT inverter module 5 is disposed on the main control plate 3, a current sensor 6 is disposed on the main control plate 3, a microcontroller 7 is disposed on the main control plate 3, the dc input terminal 4 is electrically connected to the IGBT inverter module 5, the IGBT inverter module 5 is electrically connected to the current sensor 6, the dc input terminal 4, the IGBT inverter module 5 and the current sensor 6 are used in cooperation, ac conversion can be performed on dc, the current sensor 6 is electrically connected to the microcontroller 7, the microcontroller 7 is electrically connected to the IGBT inverter module 5, the current sensor 6, the microcontroller 7 and the IGBT inverter module 5 are used in cooperation, and the like, effective feedback can be performed on parameters of dc and ac, a heat dissipation mechanism 8 is commonly disposed on the bottom plate 1, the side plate 2, and the main control plate 3.
As shown in fig. 1, 2, and 3, the heat dissipation mechanism 8 includes a vent hole 81, a heat dissipation fan 82, a conductive dust screen 83, a slider 84, a sliding seat 85, a dust accommodating groove 86, a supporting cylinder 87, a sensing tube 88, a supporting plate 89, an articulated seat 891, a top plate 892 and a power supply contact 893, the vent hole 81 is formed in a first side plate, the heat dissipation fan 82 is fixedly installed in a second side plate, the conductive dust screen 83 is contacted with the second side plate, the slider 84 is fixedly connected to the conductive dust screen 83, the dust accommodating groove 86 is formed in the bottom plate 1, the supporting cylinder 87 is fixedly installed in the bottom plate 1, a telescopic end of the supporting cylinder 87 is fixedly connected to the conductive dust screen 83 through an insulating plate, the supporting plate 89 is fixedly connected to the supporting plate 89, the articulated seat 891 is articulated with the top plate 891, and the heat dissipation and dust removal effects of the inverter can be improved by using the heat dissipation fan 82, the vent hole 81, the supporting cylinder 892, and the top plate 892 and other structures.
As shown in fig. 1, 2, and 3, a sliding seat 85 is fixedly connected to the second side plate, the sliding seat 85 is slidably connected to the slide bar 84, the sliding seat 85 is used in cooperation with the slide bar 84 to move and guide the conductive dust screen 83, an induction tube 88 is arranged on the main control plate 3, the induction tube 88 is connected to the supporting cylinder 87 through a conduit, the induction tube 88 is arranged to assist the supporting cylinder 87 to perform telescopic movement, the top plate 892 is in contact with the side plate 2, a power supply contact 893 is fixedly connected to the top plate 892, and the conductive dust screen 83 is ensured to form a closed loop through the arrangement of the power supply contact 893.
The specific implementation process of the invention is as follows: in normal temperature weather, the cooling fan 82 is started to perform forced air cooling on the interior of the inverter, the effective circulation of air can be ensured by matching with the action of the vent hole 81, and dust can be effectively blocked under the action of the conductive dustproof net 83;
in high-temperature weather, the heat of the IGBT inverter module 5 is increased, so that the liquid in the induction pipe 88 is heated and expanded, the support cylinder 87 is made to perform telescopic motion under the action of the guide pipe, the conductive dustproof net 83 is pushed to slide along the surface of the second side plate, the conductive dustproof net 83 is in a stable sliding state under the matching action of the slide bar 84 and the slide seat 85, and finally the conductive dustproof net 83 is far away from the cooling fan 82, so that the direct cooling effect of the cooling fan 82 is improved; at this time, the conductive dust screen 83 contacts with the power supply contact 893 to lift the top plate 892, so that the top plate 892 deflects in a hinged relationship, and finally the top plate 892 is separated from the side plate 2, thereby improving the heat dissipation effect;
because the hot air moves upwards, under the action of the vent holes 81, the inverter can form two heat dissipation air channels, one part of the heat dissipation air channels overflows from the heat dissipation gaps, the other part of the heat dissipation air channels still flows out from the vent holes 81, and the two heat dissipation air channels are perpendicular to each other, so that certain turbulence can be formed in the inverter, the air flow rates of the two heat dissipation air channels are higher, and the air flow rate of a turbulence area is lower; at this time, the entering air is not filtered by the conductive dustproof net 83, and the dust on the heat dissipation air duct in the horizontal direction is difficult to remain in the inverter and is discharged from the vent hole 81;
the ascending heat dissipation wind channel dust of vertical direction easily stays in the inverter under the action of gravity, because electrically conductive dust screen 83 contacts with power supply contact 893, make electrically conductive dust screen 83 form closed circuit, carry out electrostatic absorption with this part dust, after the temperature drops, the liquid in induction pipe 88 tends to the normal atmospheric temperature, make support cylinder 87 drive electrically conductive dust screen 83 and shift back and reset, and electrically conductive dust screen 83 breaks away from power supply contact 893, make electrically conductive dust screen 83 lose the static nature, dust holding tank 86 is dropped to the dust on the electrically conductive dust screen 83, avoided follow-up radiator fan 82 during operation, inhale the inverter with the dust above it in.
This scheme passes through the setting of induction tube 88, can respond to IGBT contravariant module 5 heat in real time, when IGBT contravariant module 5 heat is higher, the inside low boiling point liquid boiling inflation of induction tube 88, and then promote support cylinder 87 and carry out concertina movement, make support cylinder 87 promote electrically conductive dust screen 83 and slide, make curb plate 2 be in the open mode, and under articulated relation, promote roof 892 and open, and cooperate radiator fan 82's effect, improve the radiating effect of inverter, and when electrically conductive dust screen 83 contacts with power supply contact 893, can carry out electrostatic absorption to the inside floating dust of inverter, the heat dissipation of inverter has been improved greatly, the dust removal performance, in order to guarantee that the inverter can carry out normal work under high temperature environment, avoid the problem that traditional inverter high temperature environment work efficiency is low.
The principle of the invention is as follows: in normal temperature weather, the cooling fan is started to perform forced air cooling on the inside of the inverter, the effective circulation of air can be ensured by matching the action of the vent holes, and dust can be effectively blocked under the action of the conductive dustproof net;
in high-temperature weather, the heat of the IGBT inversion module is increased, so that liquid in the induction pipe is heated and expanded, the support cylinder is made to move in a telescopic mode under the action of the guide pipe, the conductive dust screen is pushed to slide along the surface of the side plate, the conductive dust screen is in a stable sliding state under the matching action of the sliding strip and the sliding seat, finally the conductive dust screen is far away from the radiating fan, and the direct radiating effect of the radiating fan is improved; at the moment, the conductive dustproof net is in contact with the power supply contact to lift the top plate, the top plate deflects under the hinged relation, and finally the top plate is separated from the side plate, so that the heat dissipation effect is improved;
because the hot air moves upwards, under the action of the vent holes, the inverter can form two heat dissipation air channels, one part of the heat dissipation air channels overflows from the heat dissipation gaps, the other part of the heat dissipation air channels still flows out from the vent holes, the two heat dissipation air channels are perpendicular to each other, certain turbulent flow can be formed in the inverter, the air flow rates of the two heat dissipation air channels are higher, and the air flow rate of a turbulent flow area is lower; at the moment, the entering air is not filtered by the conductive dustproof net, and dust on the heat dissipation air duct in the horizontal direction is difficult to remain in the inverter and is discharged from the ventilation hole;
the ascending heat dissipation wind channel dust of vertical side easily stays in the dc-to-ac converter under the action of gravity, because electrically conductive dust screen and the contact of power supply contact, make electrically conductive dust screen form closed circuit, carry out electrostatic absorption with this part dust, after the temperature drops, the liquid in the induction pipe tends to the normal atmospheric temperature, make the support cylinder drive electrically conductive dust screen and shift back and reset, and electrically conductive dust screen breaks away from the power supply contact, make electrically conductive dust screen lose the static nature, the dust holding tank is dropped to the dust on the electrically conductive dust screen, the during operation of subsequent radiator fan has been avoided, inhale the dust above it in the dc-to-ac converter. Through the setting of induction pipe, can the auxiliary stay cylinder carry out concertina movement. Through the cooperation use of structures such as radiator fan, ventilation hole, support cylinder, roof, can improve the heat dissipation of dc-to-ac converter, dust removal effect. Through the cooperation use of current sensor, microcontroller, IGBT contravariant module etc. can carry out effective feedback to the parameter of direct current and alternating current.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A photovoltaic grid-connected inverter with self-adaptive heat dissipation capability is characterized by comprising an inverter cabinet, and a sensing tube, an inverter module and a supporting cylinder which are arranged in the inverter cabinet;
the inversion cabinet comprises a bottom plate, a top plate, a first side plate and a second side plate, wherein the bottom plate and the top plate are arranged oppositely, and the first side plate and the second side plate are arranged between the bottom plate and the top plate oppositely;
one end of the induction pipe is attached to the inversion module and used for sensing the heat of the inversion module in real time, when the heat of the inversion module rises, liquid on the inner wall of the induction pipe boils and expands to push the supporting cylinder connected with the other end of the induction pipe to move towards the top plate in the direction perpendicular to the bottom plate, so that the supporting cylinder pushes the conductive dustproof net to move, and the second side plate and the top plate are in an open state.
2. The grid-connected photovoltaic inverter according to claim 1, wherein a power supply contact is disposed on a side surface of the top plate close to the bottom plate, and the conductive dust screen is turned on when contacting the power supply contact, so that the conductive dust screen performs electrostatic adsorption on floating dust inside the inverter cabinet.
3. The grid-connected photovoltaic inverter according to claim 2, wherein when the heat of the inverter module is reduced, the liquid inside the induction tube tends to normal temperature, so that the support cylinder drives the conductive dust screen to move back and reset, the conductive dust screen is separated from the power supply contact, and dust adsorbed on the conductive dust screen falls into a containing groove in the bottom plate.
4. The grid-connected photovoltaic inverter according to claim 1, wherein a sliding seat is disposed on the second side plate, a sliding strip is slidably connected to the sliding seat, and the sliding strip is connected to the conductive dust screen.
5. The photovoltaic grid-connected inverter according to claim 1, wherein a heat dissipation fan is arranged in the second side plate, and the heat dissipation fan is arranged opposite to the conductive dust screen; the conductive dustproof net is attached to the outer side of the second side face, and the length of the conductive dustproof net relative to the second side face is not smaller than the length of the cooling fan relative to the second side face.
6. The grid-connected photovoltaic inverter according to claim 5, wherein the heat dissipation fan, the conductive dust screen and the inner wall of the second side plate form a cavity;
one end of the supporting cylinder is connected with the conductive dustproof net, and the other end of the supporting cylinder is embedded in and protrudes out of the bottom plate.
7. The grid-connected photovoltaic inverter according to claim 6, wherein the first side plate has a plurality of parallel ventilation holes therein, so as to facilitate the heat dissipation fan to bring the heat inside the inverter cabinet to the outside of the inverter cabinet through the ventilation holes.
8. The photovoltaic grid-connected inverter according to claim 1, wherein the first side plate and the second side plate are both hinged to the top plate; the induction pipe is connected with the supporting cylinder through a guide pipe.
9. The grid-connected photovoltaic inverter according to claim 8, wherein support plates are disposed on the first side plate and the second side plate, and are connected to hinge seats, and the hinge seats are hinged to the top plate.
10. The grid-connected photovoltaic inverter according to claim 1, wherein a main control board is arranged on the bottom board, and a direct current input terminal, the inverter module, a current sensor and a microcontroller are arranged on the main control board; the main control board is electrically connected with the direct current input terminal, the inversion module, the current sensor and the microcontroller respectively; the inversion module is electrically connected with the microcontroller through the current sensor; the microcontroller and the direct current input terminal are respectively electrically connected with the inverter module.
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