CN112398311A - Multi-module series-parallel power converter device - Google Patents
Multi-module series-parallel power converter device Download PDFInfo
- Publication number
- CN112398311A CN112398311A CN202011242987.XA CN202011242987A CN112398311A CN 112398311 A CN112398311 A CN 112398311A CN 202011242987 A CN202011242987 A CN 202011242987A CN 112398311 A CN112398311 A CN 112398311A
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- side module
- series
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- assembly
- module assembly
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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
- H02M1/00—Details of apparatus for conversion
-
- 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
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
-
- 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
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Inverter Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
本发明公开了一种多模块串并联功率变换器装置，包括：柜体、串联侧模块组件、并联侧模块组件、高频隔离变压器组件和隔板组件；柜体在至少两个侧面上设有若干个通风孔；串联侧模块组件和并联侧模块组件设置于柜体内相对的两侧；高频隔离变压器设置于串联侧模块组件和并联侧模块组件之间；高频隔离变压器与串联侧模块组件之间和高频隔离变压器与并联侧模块组件之间设置有隔板组件；隔板组件上设置有若干个第二通风孔。通过将串联侧模块组件和并联侧模块组件设置于柜体相对两侧且同侧子模块等电位，并分别在高频隔离变压器与二者之间设置有包括第二通风孔的隔板组件，降低了绝缘要求并压缩了子模块之间的电气气隙，提升了子模块的散热性。
The invention discloses a multi-module series-parallel power converter device, comprising: a cabinet, a series-side module assembly, a parallel-side module assembly, a high-frequency isolation transformer assembly and a partition assembly; the cabinet is provided with at least two sides. Several ventilation holes; the series-side module assembly and the parallel-side module assembly are arranged on opposite sides of the cabinet; the high-frequency isolation transformer is arranged between the series-side module assembly and the parallel-side module assembly; the high-frequency isolation transformer and the series-side module assembly A baffle plate assembly is arranged between the high frequency isolation transformer and the parallel side module assembly; a plurality of second ventilation holes are arranged on the baffle plate assembly. By arranging the series-side module assembly and the parallel-side module assembly on opposite sides of the cabinet with equal potential of the sub-modules on the same side, and disposing a partition plate assembly including a second ventilation hole between the high-frequency isolation transformer and the two, respectively, Reduces insulation requirements and compresses the electrical air gap between sub-modules, improving the heat dissipation of the sub-modules.
Description
Technical Field
The invention relates to the technical field of power equipment manufacturing, in particular to a multi-module series-parallel power converter device.
Background
With the continuous development of power electronic technology, power converters using power electronic key devices such as Si and SiC are also widely applied in the fields of rail transit, photovoltaic transmission, direct-current networking, alternating-current and direct-current interconnection and the like. Meanwhile, the direct-current power grid and the direct-current power supply technology can more reliably and efficiently receive distributed renewable power generation systems such as wind and light, energy storage units, electric vehicles and other direct-current power loads, the conversion links are reduced, the energy utilization is high, the power flow control degree is good, the rapid development is realized in the world, and therefore the related devices of the power converter have very wide application and market prospects.
At present, related equipment of the power converter mostly adopts a modularized and series-parallel connection topological design, but the arrangement and layout of submodules in a cabinet body is not reasonable enough, so that the whole machine is large in size and cannot construct a reasonable air channel, air-cooled heat dissipation is difficult to use in some high-power direct-current transformers, water-cooled heat dissipation is forced to be adopted, and a heat dissipation system is complex and difficult to maintain.
In the overall design of the power converter as shown in the figure, the high-voltage side module, the low-voltage side module and the high-frequency isolation transformer in the same group are placed in the same row, the high-voltage side module, the low-voltage side module and the high-frequency isolation transformer in the same group form a module, a plurality of modules form a cascade system, and air is exhausted from the front of the overall power converter after entering air. The above scheme has the following problems: the high-voltage module and the low-voltage module are positioned on the same side of the cabinet body, and the problem of insulation distance needs to be considered when wiring among the modules, so that the electrical clearance allowance of the whole machine is increased, and the power density of the whole machine is reduced; no current ventilates around the high frequency isolation transformer, has reduced high frequency isolation transformer's self-cooling effect.
Disclosure of Invention
The invention aims to provide a multi-module series-parallel power converter device, wherein series side module assemblies and parallel side module assemblies are arranged on two opposite sides of a cabinet body, sub modules on the same side are at the same potential, and partition plate assemblies comprising second ventilation holes are arranged between a high-frequency isolation transformer and the series side module assemblies and between the high-frequency isolation transformer and the parallel side module assemblies, so that the insulation requirement is reduced, the electric air gaps between the sub modules are compressed, and the heat dissipation performance of the sub modules is improved by improving the air flow in the cabinet body.
To solve the above technical problem, an embodiment of the present invention provides a multi-module series-parallel power converter apparatus, and the multi-module series-parallel power converter apparatus includes: the high-frequency isolation transformer comprises a cabinet body, a series side module assembly, a parallel side module assembly, a high-frequency isolation transformer assembly and a partition plate assembly;
the cabinet body is provided with a plurality of ventilation holes on at least two side surfaces;
the serial side module assembly and the parallel side module assembly are arranged on two opposite sides in the cabinet body;
the high-frequency isolation transformer is arranged between the serial side module assembly and the parallel side module assembly;
partition plate assemblies are arranged between the high-frequency isolation transformer and the series side module assembly and between the high-frequency isolation transformer and the parallel side module assembly;
and a plurality of second ventilation holes are formed in the partition plate assembly.
Further, the serial side module assembly and the parallel side module assembly comprise a plurality of sub-modules, and the sub-modules are provided with radiators;
the partition plate assembly comprises a plurality of partition plates, the partition plates correspond to the sub-modules one by one, the partition plates are provided with vent holes, and the vent holes correspond to the positions of the sub-module radiators;
and the partition plate is fixedly provided with an L-shaped switching terminal, and the L-shaped switching terminal corresponds to the alternating current end of the submodule through a copper bar.
Furthermore, the plurality of sub-modules in the serial side module assembly and the parallel side module assembly are arranged in a matrix;
and a plurality of partition plates in the partition plate assembly are correspondingly arranged in a matrix.
Further, any one of the partition plates of the partition plate assembly is in seamless connection with the adjacent partition plate.
Furthermore, a plurality of fans are arranged at the top of the cabinet body, and the fans draw air out of or blow air into the cabinet body.
Furthermore, the lateral wall of the cabinet body all is provided with a plurality of the first ventilation hole that is the matrix arrangement.
Furthermore, the sub-modules of the serial side module assembly are connected in series between rows and then connected in series with other rows.
Furthermore, the upper end of the serial side module assembly is a wire inlet end, and the lower end of the serial side module assembly is a wire outlet end.
Further, the plurality of sub-modules in each row of the parallel side module assembly are connected in parallel.
Furthermore, the submodules in a plurality of rows of the parallel side module assemblies are connected in parallel.
The technical scheme of the embodiment of the invention has the following beneficial technical effects:
through setting up series connection side module subassembly and parallelly connected side module subassembly in the relative both sides of cabinet body and homonymy submodule equipotential to with being provided with the baffle subassembly including the second venthole between high frequency isolation transformer and the series connection side module subassembly and between high frequency isolation transformer and the parallelly connected side module subassembly, reduced insulating requirement and compressed the electric air gap between the submodule, promoted the thermal diffusivity of submodule through improving cabinet body inside air flow.
Drawings
FIG. 1 is a schematic diagram of a multi-module series-parallel power converter apparatus according to an embodiment of the present invention;
FIG. 2 is a rear view of a multi-module series-parallel power converter apparatus provided by an embodiment of the present invention;
FIG. 3 is a front view of a multi-module series-parallel power converter apparatus provided by an embodiment of the present invention;
FIG. 4 is a schematic structural view of a baffle plate assembly provided by an embodiment of the invention;
FIG. 5 is a schematic diagram of a separator according to an embodiment of the present invention;
FIG. 6 is a top view of a multi-module series-parallel power converter apparatus provided by an embodiment of the present invention;
FIG. 7 is a schematic view of a sub-module heat sink provided by an embodiment of the invention;
FIG. 8 is a schematic view of a sub-module heat sink and spacer connection provided by an embodiment of the present invention;
FIG. 9 is a schematic diagram of a sub-module arrangement of a series side module assembly provided in an embodiment of the present invention;
FIG. 10 is a schematic diagram of a sub-module arrangement of a parallel side module assembly provided by an embodiment of the invention;
fig. 11 is a schematic diagram of a multi-module series-parallel power converter apparatus duct according to an embodiment of the present invention.
Reference numerals:
1. the cabinet body, 11, first ventilation hole, 12, the fan, 2, series connection side module subassembly, 3, parallel connection side module subassembly, 4, high frequency isolation transformer subassembly, 5, the baffle subassembly, 51, first L type metal switching terminal, 52, second L type metal switching terminal, 53, second ventilation hole, 6, submodule piece, 61, submodule piece air inlet fan, 62, fin formula radiator, 63, first heating unit, 64, second heating unit, 65, the exchange end outlet line copper bar.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Fig. 1 is a schematic structural diagram of a multi-module series-parallel power converter device according to an embodiment of the present invention.
Fig. 2 is a rear view of a multi-module series-parallel power converter apparatus provided by an embodiment of the present invention.
Fig. 3 is a front view of a multi-module series-parallel power converter apparatus according to an embodiment of the present invention.
Referring to fig. 1, fig. 2 and fig. 3, an embodiment of the invention provides a multi-module series-parallel power converter apparatus, including: the transformer cabinet comprises a cabinet body 1, a series side module assembly 2, a parallel side module assembly 3, a high-frequency isolation transformer assembly 4 and a partition plate assembly 5; the cabinet body 1 is provided with a plurality of ventilation holes on at least two side surfaces; the series side module assembly 2 and the parallel side module assembly 3 are arranged on two opposite sides in the cabinet body 1; the high-frequency isolation transformer is arranged between the series side module assembly 2 and the parallel side module assembly 3; partition plate assemblies 5 are arranged between the high-frequency isolation transformer and the series side module assembly 2 and between the high-frequency isolation transformer and the parallel side module assembly 3; the baffle plate assembly 5 is provided with a plurality of second ventilation holes 53.
In the above technical solution, the sub-modules 6 are distributed in the front and rear sides of the cabinet in a centralized manner, and the same sides are equipotential modules. The insulation requirement is reduced, the electric gap between the modules is compressed, and the power density of the whole machine is further improved.
Fig. 4 is a schematic structural diagram of a separator plate assembly 5 according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a separator according to an embodiment of the present invention.
Specifically, referring to fig. 4 and 5, the serial side module assembly 2 and the parallel side module assembly 3 include a plurality of sub-modules 6, and the sub-modules 6 are provided with radiators; the partition plate assembly 5 comprises a plurality of partition plates, the partition plates correspond to the sub-modules 6 one by one, and the partition plates are provided with vent holes corresponding to the positions of the sub-module radiators; the partition board is fixedly provided with a first L-shaped switching terminal 51 and a second L-shaped switching terminal 52, and the first L-shaped switching terminal 51 and the second L-shaped switching terminal 52 correspond to the positions of the alternating current terminal outgoing line copper bar 65 of the sub-module 6.
Further, a plurality of sub-modules 6 in the serial side module assembly 2 and the parallel side module assembly 3 are arranged in a matrix; the plurality of baffles in the baffle plate assembly 5 are correspondingly arranged in a matrix.
Specifically, any partition plate of the partition plate assembly 5 is connected with an adjacent partition plate in a seamless manner.
FIG. 6 is a top view of a multi-module series-parallel power converter apparatus according to an embodiment of the present invention
Referring to fig. 6, in one embodiment of the present invention, a plurality of fans 12 are disposed at the top of the cabinet 1. Alternatively, the fan 12 draws air from or blows air into the cabinet 1.
Specifically, the side wall of the cabinet body 1 is provided with a plurality of first ventilation holes 11 arranged in a matrix.
Fig. 7 is a schematic diagram of a sub-module heat sink provided by an embodiment of the invention.
FIG. 8 is a schematic view of a sub-module heat sink and spacer connection provided in an embodiment of the invention
Referring to fig. 7 and 8, the sub-module heat sink is disposed on one side of the sub-module 6, corresponding to the second ventilation holes 53 of the partition board. The air intake fan of the sub-module 6 is located at one side of the sub-module facing the outer side of the cabinet body, and the fin type radiator 62 is located at one side of the sub-module facing the inner part of the cabinet body, absorbs the heat of the first heating unit 63 and the second heating unit 64, and radiates the heat in an air cooling mode.
Fig. 9 is a schematic diagram of the arrangement of sub-modules 6 of the serial side module assembly 2 according to the embodiment of the present invention.
Fig. 10 is a schematic diagram of the arrangement of sub-modules 6 of the parallel side module assembly 3 according to the embodiment of the present invention.
Specifically, referring to fig. 9 and 10, the apparatus includes 48 sub-modules 6 in total; the serial side module assembly 2 comprises 24 sub-modules 6, and the parallel side module assembly 3 comprises 24 sub-modules 6 which are arranged in a 4 x 6 mode. The air inlets of the radiators of all the sub-modules 6 face the outside of the cabinet body 1, and the air outlets face the inside of the cabinet body 1.
When the device works, the sub-module radiator sucks cold air outside the cabinet body 1 through the first ventilation hole 11 of the cabinet door, hot air is blown into the middle position of the cabinet body 1 through the second ventilation hole 53 of the partition plate by the air outlet of the sub-module radiator, and the hot air in the middle of the cabinet body 1 is pumped out of the cabinet body 1 by the fan 12 at the top of the cabinet body 1, so that a radiating air channel is formed.
A plurality of sub-modules 6 of the series side module assembly 2 are connected in series between rows and then connected in series with other rows. The upper end of the serial side module assembly 2 is a wire inlet end, and the lower end thereof is a wire outlet end. Furthermore, several sub-modules 6 of each row of the parallel side module assembly 3 are connected in parallel. The submodules 6 of a plurality of rows of the parallel side module assembly 3 are connected in parallel.
Fig. 11 is a schematic diagram of a multi-module series-parallel power converter apparatus duct according to an embodiment of the present invention.
Referring to fig. 11, the device uses front and rear air inlets and top air outlets. The air duct is reasonable and effective in design. The high-frequency isolation transformer is positioned in the center of the air duct, and experimental data show that the temperature rise of the sub-module 6 is smaller than that of the high-frequency isolation transformer, so that the internal flow ventilation of the cabinet can further improve the heat dissipation effect of the self-cooling high-frequency isolation transformer.
The embodiment of the invention aims to protect a multi-module series-parallel power converter device, which comprises: the high-frequency isolation transformer comprises a cabinet body, a series side module assembly, a parallel side module assembly, a high-frequency isolation transformer assembly and a partition plate assembly; the cabinet body is provided with a plurality of ventilation holes on at least two side surfaces; the serial side module assemblies and the parallel side module assemblies are arranged on two opposite sides in the cabinet body; the high-frequency isolation transformer is arranged between the serial side module assembly and the parallel side module assembly; partition plate assemblies are arranged between the high-frequency isolation transformer and the series side module assembly and between the high-frequency isolation transformer and the parallel side module assembly; and a plurality of second ventilation holes are formed in the clapboard component. The technical scheme has the following effects:
through setting up series connection side module subassembly and parallelly connected side module subassembly in the relative both sides of cabinet body and homonymy submodule equipotential to with being provided with the baffle subassembly including the second venthole between high frequency isolation transformer and the series connection side module subassembly and between high frequency isolation transformer and the parallelly connected side module subassembly, reduced insulating requirement and compressed the electric air gap between the submodule, promoted the thermal diffusivity of submodule through improving cabinet body inside air flow.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. A multi-module series-parallel power converter apparatus, comprising: the high-frequency isolation transformer comprises a cabinet body, a series side module assembly, a parallel side module assembly, a high-frequency isolation transformer assembly and a partition plate assembly;
the cabinet body is provided with a plurality of ventilation holes on at least two side surfaces;
the serial side module assembly and the parallel side module assembly are arranged on two opposite sides in the cabinet body;
the high-frequency isolation transformer is arranged between the serial side module assembly and the parallel side module assembly;
partition plate assemblies are arranged between the high-frequency isolation transformer and the series side module assembly and between the high-frequency isolation transformer and the parallel side module assembly;
and a plurality of second ventilation holes are formed in the partition plate assembly.
2. The multi-module series-parallel power converter apparatus of claim 1,
the serial side module assembly and the parallel side module assembly comprise a plurality of sub-modules, and the sub-modules are provided with radiators;
the partition plate assembly comprises a plurality of partition plates, the partition plates correspond to the sub-modules one by one, the partition plates are provided with vent holes, and the vent holes correspond to the positions of the sub-module radiators;
and the partition plate is fixedly provided with an L-shaped switching terminal, and the L-shaped switching terminal corresponds to the alternating current end of the submodule through a copper bar.
3. The multi-module series-parallel power converter apparatus of claim 1,
the plurality of sub-modules in the serial side module assembly and the parallel side module assembly are arranged in a matrix;
and a plurality of partition plates in the partition plate assembly are correspondingly arranged in a matrix.
4. The multi-module series-parallel power converter apparatus of claim 1,
any one of the partition plates of the partition plate assembly is in seamless connection with the adjacent partition plate.
5. The multi-module series-parallel power converter apparatus of claim 1,
the top of the cabinet body is provided with a plurality of fans, and the fans pump air out of the cabinet body or blow air into the cabinet body.
6. The multi-module series-parallel power converter apparatus of claim 1,
the lateral wall of the cabinet body all is provided with a plurality of that is the matrix arrangement first ventilation hole.
7. The multi-module series-parallel power converter apparatus of claim 3,
the plurality of sub-modules of the serial side module assembly are connected in series between rows and then connected in series with other rows.
8. The multi-module series-parallel power converter apparatus of claim 7,
the upper end of the serial side module assembly is a wire inlet end, and the lower end of the serial side module assembly is a wire outlet end.
9. The multi-module series-parallel power converter apparatus of claim 3,
the plurality of sub-modules in each row of the parallel side module assembly are connected in parallel.
10. The multi-module series-parallel power converter apparatus of claim 9,
and the submodules in a plurality of rows of the parallel side module assemblies are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011242987.XA CN112398311A (en) | 2020-11-10 | 2020-11-10 | Multi-module series-parallel power converter device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011242987.XA CN112398311A (en) | 2020-11-10 | 2020-11-10 | Multi-module series-parallel power converter device |
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| CN112398311A true CN112398311A (en) | 2021-02-23 |
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| CN202011242987.XA Pending CN112398311A (en) | 2020-11-10 | 2020-11-10 | Multi-module series-parallel power converter device |
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| WO2022183479A1 (en) * | 2021-03-05 | 2022-09-09 | 华为数字能源技术有限公司 | Solid-state transformer, power supply device and data center |
| JP2024155008A (en) * | 2023-04-20 | 2024-10-31 | 株式会社Tmeic | Power Conversion Equipment |
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| JP2024155008A (en) * | 2023-04-20 | 2024-10-31 | 株式会社Tmeic | Power Conversion Equipment |
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