CN110289772B - Power module and photovoltaic grid-connected inverter using same - Google Patents
Power module and photovoltaic grid-connected inverter using same Download PDFInfo
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- CN110289772B CN110289772B CN201910482508.2A CN201910482508A CN110289772B CN 110289772 B CN110289772 B CN 110289772B CN 201910482508 A CN201910482508 A CN 201910482508A CN 110289772 B CN110289772 B CN 110289772B
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- 239000003990 capacitor Substances 0.000 claims abstract description 50
- 230000017525 heat dissipation Effects 0.000 claims abstract description 50
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 57
- 229910052802 copper Inorganic materials 0.000 claims description 57
- 239000010949 copper Substances 0.000 claims description 57
- 239000000758 substrate Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 11
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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Classifications
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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
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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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- 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 relates to a power module and a photovoltaic grid-connected inverter using the same, wherein the photovoltaic grid-connected inverter comprises a cabinet and a power module arranged in the cabinet, the power module comprises a case, a bus capacitor bank, a radiator and an IGBT module, the bus capacitor bank, the radiator and the IGBT module are arranged in the case, a heat dissipation channel which ventilates from bottom to top and an installation cavity for installing the bus capacitor bank and the IGBT module are arranged on the left side and the right side of the heat dissipation channel are arranged in the case, an air inlet of the heat dissipation channel is arranged at the bottom of the case, and an air outlet of. The heat dissipation of the power module starts from the overall situation of the inverter, lower air inlet and upper air outlet are adopted, the heat dissipation channel penetrates through the upper part and the lower part of the case, the air inlet at the lower end of the case is opposite to the electric reactor below the inverter, the air outlet at the upper end of the case and the air inlet of the large fan at the top of the inverter form a heat dissipation air channel with circumferential sealing, and heat generated by the electric reactor and the IGBT module is exhausted out of the cabinet through the heat dissipation channel, so that.
Description
The application is a divisional application of the following applications, the application date of the original application: year 2017, month 02, day 17, application number of original application: 2017100876122, title of original application: a power module and a photovoltaic grid-connected inverter using the same are provided.
Technical Field
The invention relates to a power module and a photovoltaic grid-connected inverter using the same.
Background
Solar energy is one of the inexhaustible, pollution-free and cleanest energy sources, and becomes the first choice for new energy power generation by four advantages of universality, harmlessness, huge and long-term use. The development and wide application of the photovoltaic power generation technology play an important role in relieving the shortage of conventional energy and reducing the environmental pollution. The power module is used as a core component of the photovoltaic grid-connected inverter, the electrical performance and the structural layout rationality of the power module directly determine the performance and the overall dimension of the inverter.
At present, the design of a power module of a traditional high-power photovoltaic grid-connected inverter is limited on the local modular design of main components, so that the power module has the following problems: 1. the module design is not considered from the overall layout of the inverter, so that the layout of components is unreasonable, the space utilization rate is low, and the wiring is complex and messy. 2. The heat dissipation of the power module mostly adopts a front and back air inlet mode, local heat dissipation is carried out on the power module by using a small fan, and the heat dissipation effect is poor. 3. The frame of the power module is mostly in a welding type, so that the appearance is rough, the welding precision is difficult to guarantee, and the production and installation efficiency is not high. 4. The power module is installed the cabinet body and mostly adopts the fixed mode of long accent hole bolted connection, and the location is accurate inadequately to influence the wiring effect of business turn over wiring mouth. The existence of these problems directly limits the structural layout and the external dimension of the photovoltaic grid-connected inverter.
For example, chinese utility model patent that the publication number of granting is CN203851040U discloses a compact power module structure, this structure includes quick-witted case and installs the direct current bus capacitor group at quick-witted incasement, the radiator, the IGBT module, direct current bus capacitor group installs at quick-witted incasement along the fore-and-aft direction, the radiator is installed in one side of direct current bus capacitor group, the IGBT module sets up side by side with direct current bus capacitor group and fixed mounting on the radiator, the air intake and the air outlet of quick-witted case are located the front and back both ends of quick-witted case respectively and just right with the radiator passageway, quick-witted incasement forms a heat dissipation passageway by preceding to back.
Although the layout of the power module structure is relatively reasonable, the heat dissipation channel in the case is located at the bottom of the IGBI module, so that the heat dissipation channel can only dissipate the IGBI module of the power module, but cannot dissipate other parts of the power module, and the heat dissipation effect is poor.
Disclosure of Invention
The invention aims to provide a power module with a good heat dissipation effect. The invention also aims to provide a photovoltaic grid-connected inverter using the module.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a power module comprises a case, a bus capacitor bank, a radiator and an IGBT module, wherein the bus capacitor bank, the radiator and the IGBT module are installed in the case; the bus capacitor group and the IGBT module are arranged side by side up and down, the bus capacitor group is positioned above the IGBT module, and the bus capacitor group is connected with the IGBT module through a laminated busbar; the front end of the laminated busbar is provided with an input terminal, the lower end of the laminated busbar is provided with an output terminal used for being connected with an IGBT module, a direct current input switching copper bar is installed in the case in front of the laminated busbar, the upper end of the direct current input switching copper bar is connected with a corresponding input terminal, and the lower end of the direct current input switching copper bar is an input end used for inputting direct current.
The three-phase alternating current output switching copper bar is installed below the IGBT module in the case, the front end of each alternating current output switching copper bar is connected with the IGBT module, and the rear end of each alternating current output switching copper bar is an output end for outputting alternating current.
The case is of a drawer type structure, and a positioning guide pin used for being matched with the cabinet of the photovoltaic grid-connected inverter in a positioning mode after the case is installed in place in a guiding mode is arranged at the rear end of the case.
A photovoltaic grid-connected inverter comprises a cabinet and a power module arranged in the cabinet, wherein the power module comprises a case, a bus capacitor bank, a radiator and an IGBT module which are arranged in the case, a heat dissipation channel which ventilates from bottom to top and an installation cavity which is used for installing the bus capacitor bank and the IGBT module and is arranged on the left side and the right side of the heat dissipation channel are arranged in the case, an air inlet of the heat dissipation channel is arranged at the bottom of the case, and an air outlet of the heat dissipation channel is arranged at the top of the case; the bus capacitor group and the IGBT module are arranged side by side up and down, the bus capacitor group is positioned above the IGBT module, and the bus capacitor group is connected with the IGBT module through a laminated busbar; the female front end of arranging of stromatolite is equipped with the input terminal, the lower extreme is equipped with the output terminal that is used for being connected with the IGBT module, the machine incasement is installed direct current input switching copper bar in the female the place ahead of arranging of stromatolite, the upper end of direct current input switching copper bar is connected with corresponding input terminal, the lower extreme of direct current input switching copper bar is for being used for inputing direct current's input, the machine incasement is installed the three-phase and is exchanged the output switching copper bar in the below of IGBT module, the front end and the IGBT module of each alternating current output switching copper bar are connected, the rear end of each alternating current output.
The invention has the beneficial effects that: when the power module is installed in a cabinet of a photovoltaic grid-connected inverter, a case is erected and installed in the cabinet, the whole power module is radiated from the whole of the inverter and adopts lower air inlet and upper air outlet, a radiating channel penetrates through the upper portion and the lower portion of the case, an air inlet at the bottom of the case is opposite to a reactor below the inverter, an air outlet at the top of the case and an air inlet of a large fan at the top of the inverter form an independent radiating air channel, heat generated by the reactor and an IGBT module is exhausted out of the cabinet through the radiating channel, and the radiating effect is good.
Drawings
Fig. 1 is a schematic structural diagram of a chassis (chassis in a vertical state) in a power module embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a laminated busbar according to embodiment 1 of the power module of the present invention;
fig. 3 is a schematic distribution diagram (flat state of the chassis) of the heat sink, the IGBT module, and the bus capacitor bank in the chassis in embodiment 1 of the power module of the present invention;
fig. 4 is a schematic structural diagram (the chassis is in a flat state) after the direct-current input switching copper bar and the alternating-current input switching copper bar are mounted on the chassis in fig. 3;
FIG. 5 is a schematic view of the housing of FIG. 4 in an upright configuration;
fig. 6 is a schematic overall structure diagram (in a case standing state) of a power module in embodiment 1 of the present invention;
fig. 7 is a schematic view of a heat dissipation channel (in a case standing state) in power module embodiment 1 of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 7, a power module according to embodiment 1 of the present invention includes a chassis 1, and a bus capacitor group 2, an IGBT module 3, and a heat sink 4 mounted inside the chassis 1. When the power module is installed in a cabinet of the photovoltaic grid-connected inverter, the cabinet 1 is matched with the cabinet in a drawing mode through guide rails, and quick installation is achieved. The case 1 is formed by installing and combining aluminum-coated zinc plates through screws, and compared with a welded case, the invention has higher installation precision and improves the production and installation efficiency. In order to ensure accurate positioning, the rear end of the chassis 1 is provided with a positioning guide pin 18, and when the power module is installed in place, the positioning guide pin 18 is matched with the chassis in a positioning manner, so that the wiring effect of the wire inlet/outlet interface is ensured.
The cabinet 1 includes side plates 11, an upper end plate 12, a lower end plate 13, and a front support plate 15 and a rear support plate 14 disposed to face each other. The one end of keeping away from curb plate 11 of preceding backup pad 15 and back backup pad 14 all is equipped with turns over along 111, has seted up the bolt perforation on turning over along 111, and one-on-one interval has set firmly last mounting panel 16 and lower mounting panel 17 between preceding backup pad 15 and the back backup pad 14, goes up mounting panel 16 and is close to upper end plate 12, and lower mounting panel 17 is close to lower end plate 13, and wherein, lower mounting panel 17 sets up with lower end plate 13 integrated into one piece. A radiator mounting position is formed between the upper mounting plate 16 and the lower mounting plate 17, the radiator 4 comprises a base plate 41 and radiating fins 42 mounted on the base plate 41, and the radiator 4 is mounted between the front support plate 15 and the rear support plate 14; the specific installation mode is that the front end and the rear end of the base plate 41 are respectively fixedly connected with the turned edges of the front supporting plate 15 and the rear supporting plate 14 through bolts, and the radiating fins 42 are positioned between the side plate 11 and the base plate 41.
The side plate 11, the front support plate 15, the rear support plate 14, the base plate 41, the upper mounting plate 16 and the lower mounting plate 17 enclose a heat dissipation channel which ventilates from bottom to top, the side plate 11 forms the left side wall of the heat dissipation channel, the front support plate and the rear support plate form the front side wall and the rear side wall of the heat dissipation channel, and the upper mounting plate 16, the lower mounting plate 17 and the base plate 41 form the right side wall of the heat dissipation channel together. The air outlet of the heat dissipation channel is positioned at the top of the case, and the air inlet is positioned at the bottom of the case; in this embodiment, the lower opening 131 of the lower end plate 13 forms an air inlet of the heat dissipation channel, and the upper opening 121 of the upper end plate 12 forms an air outlet of the heat dissipation channel. The right side of heat dissipation channel is for supplying the installation cavity of bus capacitor group 2 and the installation of IGBT module 3, and bus capacitor group 2 and IGBT module 3 are installed side by side one on top of the other on the right side wall of heat dissipation channel. Go up and install female row 5 of stromatolite through the insulation support column on the mounting panel 16, there is bus capacitor mounting bracket 19 one side of keeping away from curb plate 11 of machine case through bolted connection, and bus capacitor installs between female row of stromatolite and bus capacitor mounting bracket 19, and IGBT module 3 is located the below of bus capacitor group and fixed mounting on radiator 4, still installs the IGBT drive plate on the IGBT module 3.
And the bus capacitor group 2 is in conductive connection with the IGBT module through the laminated busbar. The laminated busbar 5 comprises a rectangular substrate, mounting holes for mounting the bus capacitor bank are formed in the substrate at intervals along the length direction, the mounting holes are arranged in pairs, and each pair of the mounting holes is correspondingly provided with a bus capacitor. The hole opening of each mounting hole is marked with a symbol, one of the four rows of mounting holes is marked with a "-" symbol, the two middle rows are marked with an "N" symbol, the last row is marked with a "+" symbol, and when the bus capacitor is mounted, the bus capacitor is mounted by referring to the symbol marked at the hole opening of the mounting hole. An input terminal 51 is provided at one end in the longitudinal direction of the substrate, and an output terminal 52 is provided at one side in the width direction. When the laminated busbar 5 is installed, the length direction extends along the front-back direction of the chassis, the width direction extends along the up-down direction of the chassis, the input terminal 51 is positioned at the front side of the chassis, and the input terminal 51 extends into the second part space of the chassis and is used for being connected with the direct-current input switching copper bar; the output terminal 52 faces downward and is used for connection to the IGBT module. The IGBT module 3 is composed of a front part, a middle part and a rear part, three groups of output terminals 52 of the laminated busbar 5 correspond to each other, in the embodiment, absorption capacitors 6 are arranged between the laminated busbar 5 and the IGBT module, the three groups of absorption capacitors 6 are sequentially aligned with the three groups of output terminals 52 of the laminated busbar 5 and are respectively connected with the output terminals of the laminated busbar and the corresponding parts of the IGBT module through bolts, and the output terminals of the laminated busbar are connected with the IGBT module through the absorption capacitors 6.
The three-phase alternating current output switching copper bar 7 is installed at the position below the IGBT module 3 in the installation cavity of the case 1, each alternating current output switching copper bar 7 extends along the front-back direction, the front end of each alternating current output switching copper bar is connected with the corresponding part of the IGBT module 3 through the switching copper bar 8 extending along the up-down direction, and the rear end of each alternating current output switching copper bar forms an output end for outputting alternating current. Each alternating current output switching copper bar 7 is fixedly provided with a current Hall element 9, and the alternating current output switching copper bars 7 respectively penetrate through the corresponding current Hall elements 9. One side of the switching copper bar 8, which is far away from the side plate, in the case 1 is connected with an insulating plate 22 through bolts, and the insulating plate 22 is fixed with a control panel 21.
A direct current input switching copper bar 10 is fixed at the front part of the case 1, the direct current input switching copper bar 10 is positioned in front of the laminated busbar, the direct current input switching copper bar 10 is divided into a positive direct current input switching copper bar 101 and a negative direct current input switching copper bar 102, and the positive direct current input switching copper bar 101 is fixed on a side plate 11 of the case through an insulating support column; the negative direct-current input switching copper bar 102 is fixed on the positive direct-current input switching copper bar through an insulating block, so that the two-pole copper bars are supported and isolated, the positive direct-current input switching copper bar and the negative direct-current input switching copper bar extend in the up-down direction, the upper ends of the positive direct-current input switching copper bar and the negative direct-current input switching copper bar are connected with corresponding input terminals of the laminated busbar, and the lower ends of the direct-current input. The negative direct current input switching copper bar 102 is fixedly provided with a current Hall element 9. The direct current filter 20 is fixed at the front end of the case 1, the direct current filter 20 comprises a magnetic ring 201 and a module control panel 202, the module control panel 202 is located above the magnetic ring 201 and fixed at the front end of the case 1 through a control panel mounting plate 203, the magnetic ring 201 is fixed at the front end of the case and extends into the case, and positive and negative direct current input switching copper bars penetrate through holes of the magnetic ring 201 to achieve a filtering function.
The assembly process of the power module of the invention comprises the following steps: 1. installing the radiator 4 in the case; 2. mounting the IGBT module 3 on the heat sink 4; 3. fixing the laminated busbar 5 on the upper mounting plate 16 through an insulating support column; 4. fixing the bus capacitor group into a corresponding mounting hole of the bus capacitor mounting rack, and connecting the laminated busbar with the bus capacitor group through bolts; 5. aligning the absorption capacitor 6 with an output terminal of the laminated busbar in sequence, and connecting the absorption capacitor with the laminated busbar and the IGBT module through bolts; 6. inserting the IGBT driving board to the IGBT module; 7. fixing a magnetic ring of the direct current filter at the front end of the case, wherein the magnetic ring faces the inside of the case; 8. passing the direct-current input switching copper bar through the magnetic ring, wherein the front end of the direct-current input switching copper bar is connected with the input terminal of the laminated busbar; the positive direct-current input switching copper bar is fixed on the side plate of the case through an insulation support column, a current Hall element is fixedly arranged on the negative direct-current input switching copper bar, and the negative direct-current input switching copper bar is isolated from the positive direct-current input switching copper bar through an insulation block; 9. connecting an alternating current output switching copper bar to an output terminal of the IGBT module, wherein each alternating current output switching copper bar is fixedly provided with a current Hall element; 10. the front end of the chassis is provided with a control panel mounting plate 203, one side of the chassis is connected with an insulating plate 22, a module control panel 202 of the direct current filter is fixed on the control panel mounting plate 203, and a control panel 21 is fixed on the insulating plate 22, namely, the power module is mounted.
In this embodiment, the heat dissipation channel is defined by the side plate of the chassis, the front support plate, the rear support plate, the upper mounting plate, the lower mounting plate and the base plate of the heat sink, and in other embodiments, the upper mounting plate and the lower mounting plate may not be provided, and the base plate of the heat sink alone forms the right side wall of the heat dissipation channel; or the radiator comprises a shell with a rectangular cross section and radiating fins arranged in the shell, and the radiating channel is formed in the shell; the right side wall of the heat dissipation channel can also be a sealing plate connected to the front and rear support plates, and the heat radiator is fixed on the sealing plate. The IGBT module can also be arranged above the bus capacitor bank, and at the moment, the alternating current output switching copper bar is arranged above the IGBT module. The installation cavity for installing the bus capacitor bank and the IGBT module can also be arranged on the left side of the heat dissipation channel.
The embodiment of the photovoltaic grid-connected inverter using the power module comprises a cabinet and the power module installed in the cabinet, wherein the structure of the power module is as above, and the details are not repeated herein in order to avoid repetition. When the power module is installed, the case is erected and installed in the cabinet. After the power module is installed, the air inlet at the lower end of the case is opposite to the reactor below the power module, the air outlet at the upper end of the case and the air inlet of the large fan at the top of the power module form a circumferentially sealed heat dissipation air channel, heat generated by the reactor and the IGBT module is discharged out of the cabinet through the heat dissipation air channel, and the heat dissipation effect is good.
Claims (4)
1. The utility model provides a power module, includes quick-witted case and installs bus capacitor group, radiator and IGBT module in quick-witted case which characterized in that: the air inlet of the heat dissipation channel is positioned at the bottom of the case, and the air outlet is positioned at the top of the case; the case comprises a side plate, an upper end plate, a lower end plate, a front supporting plate and a rear supporting plate which are arranged face to face, wherein an upper opening on the upper end plate forms an air outlet of a heat dissipation channel, a lower opening on the lower end plate forms an air inlet of the heat dissipation channel, an upper mounting plate and a lower mounting plate are fixedly arranged between the front supporting plate and the rear supporting plate at an interval from top to bottom, the upper mounting plate is close to the upper end plate, the lower mounting plate is close to the lower end plate, a radiator mounting position is formed between the upper mounting plate and the lower mounting plate, the radiator comprises a base plate and a heat dissipation fin arranged on the base plate, the radiator is arranged between the front supporting plate and the rear supporting plate, the heat dissipation fin is arranged between the side plate and the base plate, the side plate, the front supporting plate, the rear supporting plate, the base plate, the, The upper mounting plate, the lower mounting plate and the substrate form a right side wall of the heat dissipation channel together, and the bus capacitor bank and the IGBT module are mounted on the right side wall of the heat dissipation channel in a row from top to bottom; the bus capacitor group and the IGBT module are arranged side by side up and down, the bus capacitor group is positioned above the IGBT module, and the bus capacitor group is connected with the IGBT module through a laminated busbar; the front end of the laminated busbar is provided with an input terminal, the lower end of the laminated busbar is provided with an output terminal used for being connected with an IGBT module, a direct current input switching copper bar is installed in the case in front of the laminated busbar, the upper end of the direct current input switching copper bar is connected with a corresponding input terminal, and the lower end of the direct current input switching copper bar is an input end used for inputting direct current.
2. The power module of claim 1, wherein: the three-phase alternating current output switching copper bar is installed below the IGBT module in the case, the front end of each alternating current output switching copper bar is connected with the IGBT module, and the rear end of each alternating current output switching copper bar is an output end for outputting alternating current.
3. The power module of any of claims 1-2, wherein: the case is of a drawer type structure, and a positioning guide pin used for being matched with the cabinet of the photovoltaic grid-connected inverter in a positioning mode after the case is installed in place in a guiding mode is arranged at the rear end of the case.
4. The utility model provides a photovoltaic grid-connected inverter, includes the rack and installs the inside power module in the rack, power module includes quick-witted case and installs bus capacitor group, radiator and the IGBT module at quick-witted incasement, its characterized in that: the air inlet of the heat dissipation channel is positioned at the bottom of the case, and the air outlet is positioned at the top of the case; the case comprises a side plate, an upper end plate, a lower end plate, a front supporting plate and a rear supporting plate which are arranged face to face, wherein an upper opening on the upper end plate forms an air outlet of a heat dissipation channel, a lower opening on the lower end plate forms an air inlet of the heat dissipation channel, an upper mounting plate and a lower mounting plate are fixedly arranged between the front supporting plate and the rear supporting plate at an interval from top to bottom, the upper mounting plate is close to the upper end plate, the lower mounting plate is close to the lower end plate, a radiator mounting position is formed between the upper mounting plate and the lower mounting plate, the radiator comprises a base plate and a heat dissipation fin arranged on the base plate, the radiator is arranged between the front supporting plate and the rear supporting plate, the heat dissipation fin is arranged between the side plate and the base plate, the side plate, the front supporting plate, the rear supporting plate, the base plate, the, The upper mounting plate, the lower mounting plate and the substrate form a right side wall of the heat dissipation channel together, and the bus capacitor bank and the IGBT module are mounted on the right side wall of the heat dissipation channel in a row from top to bottom; the bus capacitor group and the IGBT module are arranged side by side up and down, the bus capacitor group is positioned above the IGBT module, and the bus capacitor group is connected with the IGBT module through a laminated busbar; the female front end of arranging of stromatolite is equipped with the input terminal, the lower extreme is equipped with the output terminal that is used for being connected with the IGBT module, the machine incasement is installed direct current input switching copper bar in the female the place ahead of arranging of stromatolite, the upper end of direct current input switching copper bar is connected with corresponding input terminal, the lower extreme of direct current input switching copper bar is for being used for inputing direct current's input, the machine incasement is installed the three-phase and is exchanged the output switching copper bar in the below of IGBT module, the front end and the IGBT module of each alternating current output switching copper bar are connected, the rear end of each alternating current output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482508.2A CN110289772B (en) | 2017-02-17 | 2017-02-17 | Power module and photovoltaic grid-connected inverter using same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710087612.2A CN107070256B (en) | 2017-02-17 | 2017-02-17 | A kind of power module and the photovoltaic combining inverter using the module |
| CN201910482508.2A CN110289772B (en) | 2017-02-17 | 2017-02-17 | Power module and photovoltaic grid-connected inverter using same |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710087612.2A Division CN107070256B (en) | 2017-02-17 | 2017-02-17 | A kind of power module and the photovoltaic combining inverter using the module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110289772A CN110289772A (en) | 2019-09-27 |
| CN110289772B true CN110289772B (en) | 2021-04-20 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710087612.2A Active CN107070256B (en) | 2017-02-17 | 2017-02-17 | A kind of power module and the photovoltaic combining inverter using the module |
| CN201910482508.2A Active CN110289772B (en) | 2017-02-17 | 2017-02-17 | Power module and photovoltaic grid-connected inverter using same |
| CN201910483295.5A Active CN110138238B (en) | 2017-02-17 | 2017-02-17 | Power module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108075619A (en) * | 2017-12-25 | 2018-05-25 | 北京天诚同创电气有限公司 | A kind of single-phase power module |
| US11332087B2 (en) * | 2018-06-04 | 2022-05-17 | Westinghouse Air Brake Technologies Corporation | Phase module assembly of a multi-phase inverter |
| JP7277094B2 (en) * | 2018-08-31 | 2023-05-18 | 東洋電機製造株式会社 | power converter |
| CN110120639A (en) * | 2019-06-25 | 2019-08-13 | 阿特拉斯·科普柯(无锡)压缩机有限公司 | A kind of electronic equipment and electrical cabinet comprising it |
| CN112787564A (en) * | 2019-11-11 | 2021-05-11 | 中车株洲电力机车研究所有限公司 | Motor controller with high power density |
| CN115297698B (en) * | 2022-09-01 | 2024-05-17 | 国网重庆市电力公司电力科学研究院 | Photovoltaic grid-connected inverter with self-adaptive heat dissipation capability |
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| CN203851040U (en) * | 2014-05-06 | 2014-09-24 | 特变电工新疆新能源股份有限公司 | Compact power module structure |
| CN104868702A (en) * | 2014-11-03 | 2015-08-26 | 浙江海得新能源有限公司 | Converter power cabinet |
| CN205356166U (en) * | 2016-01-05 | 2016-06-29 | 中兴通讯股份有限公司 | Be applied to photovoltaic inverter's heat radiation structure |
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| CN200969521Y (en) * | 2006-11-14 | 2007-10-31 | 广东志成冠军集团有限公司 | Multi-standard modularized UPS electrical source |
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| CN104868702A (en) * | 2014-11-03 | 2015-08-26 | 浙江海得新能源有限公司 | Converter power cabinet |
| CN205356166U (en) * | 2016-01-05 | 2016-06-29 | 中兴通讯股份有限公司 | Be applied to photovoltaic inverter's heat radiation structure |
Also Published As
| Publication number | Publication date |
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| CN107070256A (en) | 2017-08-18 |
| CN107070256B (en) | 2019-06-21 |
| CN110138238A (en) | 2019-08-16 |
| CN110289772A (en) | 2019-09-27 |
| CN110138238B (en) | 2021-04-16 |
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