CN210380667U - Converter valve tower water distribution system with full-bridge and half-bridge power modules in series-parallel connection - Google Patents
Converter valve tower water distribution system with full-bridge and half-bridge power modules in series-parallel connection Download PDFInfo
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- CN210380667U CN210380667U CN201920981087.3U CN201920981087U CN210380667U CN 210380667 U CN210380667 U CN 210380667U CN 201920981087 U CN201920981087 U CN 201920981087U CN 210380667 U CN210380667 U CN 210380667U
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Abstract
The utility model discloses a converter valve tower water distribution system with a full-bridge and a half-bridge power module in series-parallel connection, wherein a main water inlet pipeline is connected with an interlayer water inlet transverse pipe, and a main water return pipeline is connected with an interlayer water return transverse pipe; the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly are both connected with a water inlet branch pipe and a water outlet branch pipe, one end of the water inlet branch pipe is connected with an interlayer water inlet transverse pipe, and one end of the water outlet branch pipe is connected with an interlayer water return transverse pipe; the flow resistance of each full-bridge power module water cooling assembly is equal to that of each half-bridge power module water cooling assembly. The utility model meets the development of flexible direct current transmission technology and the research and development requirements of large-capacity converter valve power units; the automatic distribution of the respective cooling water flow of the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly in the parallel-serial valve tower is realized, the respective cooling water flow between the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly is even, and the waste of cooling water is avoided.
Description
Technical Field
The utility model belongs to the technical field of high-voltage direct-current power transmission, concretely relates to full-bridge and half-bridge power module series-parallel's converter valve tower water distribution system.
Background
The core equipment of flexible direct current transmission is a converter valve tower consisting of a plurality of power modules, a power conversion device IGBT is a core part of the power modules, cooling water is adopted for heat dissipation of the IGBT in the power modules, a closed cooling water circulation system provides power, the cooling water is circulated to a water-cooling radiator in contact with an IGBT substrate through a pipeline, the heat is taken away through the cooling water circulating through an internal flow channel of the water-cooling radiator, and finally the cooling water is transferred to the atmospheric environment through heat exchange equipment, so that the operation of the converter valve power device IGBT is ensured within a safe temperature range.
Only one power module is arranged in the traditional converter valve tower, namely, the whole power module is connected to the full bridge power module or the whole power module is connected to the half bridge power module, and although the problem of waste of cooling water does not exist in the single connection mode, along with the development of a flexible direct-current transmission technology and the research and development requirements of a large-capacity converter valve power unit, the converter valve tower of the traditional single power module is low in efficiency and performance and cannot meet the requirements. The converter valve tower needs to be designed to be formed by two different structures and power modules with different calorific values in a series-parallel mode, and the full-bridge power modules and the half-bridge power modules in the series-parallel converter valve tower can be combined in different quantities. The problems to be overcome by the design of the parallel-serial converter valve tower are as follows: because the power device IGBT number that full-bridge and half-bridge power module adopted is different and calorific capacity is different, consequently the cooling water flow that each needs also is different. The traditional cooling water path system design method cannot meet the requirement, and if the flow of the main water inlet pipeline is increased, the waste of cooling water is caused.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a converter valve tower water distribution system of full-bridge and half-bridge power module series-parallel connection, its aim at satisfy the development of flexible direct current transmission technique and large capacity converter valve power unit's research and development demand, realize the respective cooling water flow automatic allocation of full-bridge and half-bridge power module in the series-parallel connection valve tower, respective cooling water flow is even between full-bridge and half-bridge power module, avoids the waste of cooling water.
In order to solve the technical problem, the utility model discloses a following scheme realizes:
a converter valve tower water distribution system with full-bridge and half-bridge power modules in series-parallel connection comprises a main water inlet pipeline, a main water return pipeline and a plurality of power module water cooling assemblies, wherein an interlayer water inlet transverse pipe is connected to the main water inlet pipeline; the power module water-cooling assembly comprises a full-bridge power module water-cooling assembly and a half-bridge power module water-cooling assembly, the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly are both connected with a water inlet branch pipe and a water outlet branch pipe, one end of the water inlet branch pipe is connected with an interlayer water inlet horizontal pipe, and one end of the water outlet branch pipe is connected with an interlayer water return horizontal pipe; the main water inlet pipeline, the interlayer water inlet horizontal pipe, the water inlet branch pipe, the water outlet branch pipe, the interlayer water return horizontal pipe and the main water return pipeline are sequentially communicated to form a circulating water path; the flow resistance of each full-bridge power module water cooling assembly is equal to that of each half-bridge power module water cooling assembly.
Furthermore, the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly are connected in parallel on the interlayer water inlet horizontal pipe and the interlayer water return horizontal pipe.
Furthermore, the center distance between the water inlet branch pipe and the water outlet branch pipe of the full-bridge power module water-cooling assembly is equal to the center distance between the water inlet branch pipe and the water outlet branch pipe of the half-bridge power module water-cooling assembly.
Furthermore, the interlayer water inlet transverse pipe and the interlayer water return transverse pipe are provided with the same interfaces, and the interfaces of the water inlet branch pipe and the water outlet branch pipe of the full-bridge power module water-cooling assembly are the same as the interfaces of the water inlet branch pipe and the water outlet branch pipe of the half-bridge power module water-cooling assembly.
Further, the diameter of the water inlet branch pipe of the full-bridge power module water-cooling assembly is equal to the diameter of the water inlet branch pipe of the half-bridge power module water-cooling assembly, and the diameter of the water outlet branch pipe of the full-bridge power module water-cooling assembly is equal to the diameter of the water outlet branch pipe of the half-bridge power module water-cooling assembly.
Furthermore, a damping device is arranged in the water inlet branch pipe of the full-bridge power module water-cooling assembly or the water inlet branch pipe of the half-bridge power module water-cooling assembly.
Further, damping device is the pipeline, and the external diameter of pipeline is less than the branch pipe internal diameter of intaking, and the pipeline setting is at the branch pipe inner wall of intaking.
Furthermore, an exhaust valve is arranged at one end, away from the water inlet, of the main water inlet pipeline, and an exhaust valve is arranged at one end, away from the water outlet, of the main water return pipeline.
Further, the full-bridge power module water-cooling assembly comprises five cold plates, and the half-bridge power module water-cooling assembly comprises three cold plates.
A design method of a converter valve tower water distribution system with a full-bridge power module and a half-bridge power module in series-parallel connection comprises the following steps of firstly, calculating the cooling flow Q1 required by a water cooling assembly of each full-bridge power module and the cooling flow Q2 required by a water cooling assembly of each half-bridge power module through a heat balance equation; then, according to the cooling flow Q2 required by the water-cooling component of the half-bridge power module, determining the flow channel structure of the water-cooling component of the half-bridge power module, and calculating the flow resistance R of the water-cooling component of the half-bridge power moduleHalf of(ii) a Then, according to the cooling flow Q1 required by the full-bridge power module water-cooling component, adjusting the flow channel structure of the full-bridge power module water-cooling component to ensure that the flow resistance R of the full-bridge power module water-cooling componentAll-purposeFlow resistance R equal to water cooling component of half-bridge power moduleHalf of(ii) a Finally, processing full-bridge power module water-cooling assembly and half-bridge power module water-cooling assembly samples to obtain flow resistance R of the full-bridge power module water-cooling assemblyAll-purposeAnd the flow resistance R of the water cooling component of the half-bridge power moduleHalf ofFine tuning is performed.
Compared with the prior art, the utility model discloses following beneficial effect has at least: the utility model comprises a main water inlet pipeline, a main water return pipeline and a plurality of power module water cooling components, wherein the main water inlet pipeline is connected with an interlayer water inlet horizontal pipe, and the main water return pipeline is connected with an interlayer water return horizontal pipe; the power module water-cooling assembly comprises a full-bridge power module water-cooling assembly and a half-bridge power module water-cooling assembly, the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly are both connected with a water inlet branch pipe and a water outlet branch pipe, one end of the water inlet branch pipe is connected with an interlayer water inlet horizontal pipe, and one end of the water outlet branch pipe is connected with an interlayer water return horizontal pipe; the main water inlet pipeline, the interlayer water inlet horizontal pipe, the water inlet branch pipe, the water outlet branch pipe, the interlayer water return horizontal pipe and the main water return pipeline are sequentially communicated to form a circulating water path, namely, the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly are mixed and connected in a converter valve tower water distribution system, so that the development of a flexible direct-current transmission technology and the research and development requirements of a large-capacity converter valve power unit are met; because the flow resistance of each full-bridge power module water-cooling assembly of the utility model is equal to the flow resistance of each half-bridge power module water-cooling assembly, after the flow resistance of each power module water-cooling assembly is the same, the cooling water of the interlayer water inlet transverse pipe is inevitably and uniformly distributed into the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly, the respective cooling water flow of the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly in the series-parallel valve tower is automatically distributed, the respective cooling water flow between the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly is uniform; the flow resistance of the full-bridge power module water cooling assembly is equal to that of each half-bridge power module water cooling assembly, and then the flow of cooling water does not need to be increased by increasing the diameter of the main water inlet pipeline, so that the production cost can be effectively saved.
Further, the centre-to-centre spacing between the water inlet branch pipe of full-bridge power module water-cooling subassembly and the play water branch pipe equals the centre-to-centre spacing between the water inlet branch pipe of half-bridge power module water-cooling subassembly and the play water branch pipe, the horizontal pipe of intaking between the layer is provided with the same interface with the horizontal pipe of return water between the layer, the water inlet branch pipe of full-bridge power module water-cooling subassembly and the interface of play water branch pipe, the water inlet branch pipe with the interface of play water branch pipe with half-bridge power module water-cooling subassembly are the same, and thus, according to actual conditions needs, can be so that can change at will between full-bridge power module water-cooling.
Further, be provided with damping device in full-bridge power module water-cooling subassembly's the branch pipe of intaking or half-bridge power module water-cooling subassembly's the branch pipe of intaking, damping device can adjust power module water-cooling subassembly's flow resistance, promptly in the in-service use in-process, if the full-bridge power module water-cooling subassembly has little difference with half-bridge power module water-cooling subassembly's flow resistance when appearing, add through the branch pipe of intaking for the power module water-cooling subassembly that the flow resistance is less and establish damping device, finely tune power module water-cooling subassembly's flow resistance, make full-bridge power module water-cooling subassembly and half-bridge power module water-cooling subassembly's flow resistance the same, and then make the respective cooling water flow between full-bridge power module water-cooling subassembly and half-bridge.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the overall flow of the present invention;
FIG. 2 is a schematic structural diagram of a water cooling assembly of the full-bridge power module in FIG. 1;
fig. 3 is a schematic structural diagram of a water-cooling assembly of the half-bridge power module in fig. 1.
In the figure: 1-main water inlet pipeline; 2-main water return pipeline; 3-interlayer water inlet horizontal pipe; 4-interlayer water return horizontal pipe; 5-water inlet branch pipe; 6-a backwater branch pipe; 7-an exhaust valve; 8-damping device.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the utility model relates to a full-bridge and half-bridge power module series-parallel converter valve tower water distribution system, which comprises a main water inlet pipeline 1, a main water return pipeline 2, an interlayer water inlet horizontal pipe 3, an interlayer water return horizontal pipe 4, a water inlet branch pipe 5, a water return branch pipe 6 and a plurality of power module water cooling assemblies, wherein the interlayer water inlet horizontal pipe 3 is connected to the main water inlet pipeline 1, and the interlayer water return horizontal pipe 4 is connected to the main water return pipeline 2; the power module water-cooling assembly comprises a full-bridge power module water-cooling assembly and a half-bridge power module water-cooling assembly, a water inlet branch pipe 5 and a water outlet branch pipe 6 are connected to the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly, one end of the water inlet branch pipe 5 is connected with the interlayer water inlet transverse pipe 3, one end of the water outlet branch pipe 6 is connected with the interlayer water return transverse pipe 4, and the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly are connected in parallel on the interlayer water inlet transverse pipe 3 and. The main water inlet pipeline 1, the interlayer water inlet horizontal pipe 3, the water inlet branch pipe 5, the water outlet branch pipe 6, the interlayer water return horizontal pipe 4 and the main water return pipeline 2 are sequentially communicated to form a circulating water path. The flow resistance of each full-bridge power module water cooling assembly is equal to that of each half-bridge power module water cooling assembly. An exhaust valve 7 is arranged at one end of the main water inlet pipeline 1, which is far away from the water inlet of the main water inlet pipeline, and an exhaust valve 7 is arranged at one end of the main water return pipeline 2, which is far away from the water outlet of the main water return pipeline.
As a certain preferred embodiment of the present invention, the center distance between the water inlet branch pipe 5 and the water outlet branch pipe 5 of the full-bridge power module water-cooling assembly is equal to the center distance between the water inlet branch pipe 5 and the water outlet branch pipe 6 of the half-bridge power module water-cooling assembly. The diameter of the water inlet branch pipe 5 of the full-bridge power module water-cooling assembly is equal to that of the water inlet branch pipe 5 of the half-bridge power module water-cooling assembly, and the diameter of the water outlet branch pipe 6 of the full-bridge power module water-cooling assembly is equal to that of the water outlet branch pipe 6 of the half-bridge power module water-cooling assembly. The same interface is arranged on the interlayer water inlet transverse pipe 3 and the interlayer water return transverse pipe 4, the interfaces of the water inlet branch pipe 5 and the water outlet branch pipe 6 of the full-bridge power module water-cooling assembly are the same as the interfaces of the water inlet branch pipe 5 and the water outlet branch pipe 6 of the half-bridge power module water-cooling assembly, and the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly can be replaced randomly according to actual requirements.
As a certain preferred embodiment of the utility model, finely tune for the flow resistance to full-bridge power module water-cooling subassembly and half-bridge power module water-cooling subassembly, be provided with damping device 8 in full-bridge power module water-cooling subassembly's the branch pipe of intaking 5 or half-bridge power module water-cooling subassembly's branch pipe of intaking 5. Preferably, damping device 8 is the pipeline, and the external diameter of pipeline is less than into 5 internal diameters of water branch pipe, and the pipeline welding is at into 5 inner walls of water branch pipe, and such setting can effectually play the regulatory action to power module water-cooling subassembly flow resistance.
As shown in fig. 2 and fig. 3, the full-bridge power module water cooling assembly of the present invention includes five cold plates, and the half-bridge power module water cooling assembly includes three cold plates. Obviously, if the flow channels of the five cold plates of the full-bridge power module water-cooling assembly are not optimally adjusted, the flow resistance is necessarily larger than that of the three cold plates of the half-bridge power module water-cooling assembly. The flow resistance is different, which results in uneven distribution of cooling water, and the full-bridge power module cannot meet the required flow of cooling water.
As a certain preferred embodiment, the utility model discloses a converter valve tower water distribution system's of full-bridge and half-bridge power module series-parallel design method does: firstly, calculating the cooling flow Q1 required by each full-bridge power module water-cooling assembly and the cooling flow Q2 required by each half-bridge power module water-cooling assembly through a heat balance equation; then, according to the cooling flow Q2 required by the water-cooling component of the half-bridge power module, determining the flow channel structure of the water-cooling component of the half-bridge power module, and calculating the flow resistance R of the water-cooling component of the half-bridge power moduleHalf of(ii) a Then, according to the cooling flow Q1 required by the full-bridge power module water-cooling component, adjusting the flow channel structure of the full-bridge power module water-cooling component to ensure that the flow resistance R of the full-bridge power module water-cooling componentAll-purposeFlow resistance R equal to water cooling component of half-bridge power moduleHalf ofAfter the flow resistance of each power module water-cooling assembly is the same, the cooling water of the interlayer water inlet transverse pipe 4 is necessarily and uniformly distributed into the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly, so that the respective cooling water flow of the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly in the hybrid valve tower is automatically distributed, the respective cooling water flow between the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly is uniform, and the waste of the cooling water is avoided; finally, processing the water-cooling component of the full-bridge power module and the half-bridge power moduleBlock water-cooling module sample, flow resistance R to full-bridge power module water-cooling moduleAll-purposeAnd the flow resistance R of the water cooling component of the half-bridge power moduleHalf ofCarry out the fine setting, preferably, add in the branch pipe 5 that intakes of full-bridge power module water-cooling subassembly or half-bridge power module water-cooling subassembly and establish damping device 8, for example, damping device 8 is the pipeline, and the external diameter of pipeline is less than 5 internal diameters of the branch pipe of intaking, and the pipe welding is at branch pipe 5 inner walls of intaking, and such setting just can effectually play the fine setting regulating action to power module water-cooling subassembly flow resistance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a converter valve tower water distribution system of full-bridge and half-bridge power module series-parallel connection which characterized in that: the device comprises a main water inlet pipeline (1), a main water return pipeline (2) and a plurality of power module water-cooling assemblies, wherein the main water inlet pipeline (1) is connected with an interlayer water inlet transverse pipe (3), and the main water return pipeline (2) is connected with an interlayer water return transverse pipe (4); the power module water-cooling assembly comprises a full-bridge power module water-cooling assembly and a half-bridge power module water-cooling assembly, the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly are both connected with a water inlet branch pipe (5) and a water outlet branch pipe (6), one end of the water inlet branch pipe (5) is connected with the interlayer water inlet horizontal pipe (3), and one end of the water outlet branch pipe (6) is connected with the interlayer water return horizontal pipe (4); the main water inlet pipeline (1), the interlayer water inlet horizontal pipe (3), the water inlet branch pipe (5), the water outlet branch pipe (6), the interlayer water return horizontal pipe (4) and the main water return pipeline (2) are sequentially communicated to form a circulating water path; the flow resistance of each full-bridge power module water cooling assembly is equal to that of each half-bridge power module water cooling assembly.
2. The converter valve tower water distribution system with the full-bridge and half-bridge power modules in series-parallel connection according to claim 1, wherein: the full-bridge power module water-cooling assembly and the half-bridge power module water-cooling assembly are connected in parallel on the interlayer water inlet transverse pipe (3) and the interlayer water return transverse pipe (4).
3. The converter valve tower water distribution system with the full-bridge and half-bridge power modules in series-parallel connection according to claim 1, wherein: the center distance between the water inlet branch pipe (5) and the water outlet branch pipe (6) of the full-bridge power module water-cooling assembly is equal to the center distance between the water inlet branch pipe (5) and the water outlet branch pipe (6) of the half-bridge power module water-cooling assembly.
4. The converter valve tower water distribution system with the full-bridge and half-bridge power modules in series-parallel connection according to claim 3, wherein: the interlayer water inlet transverse pipe (3) and the interlayer water return transverse pipe (4) are provided with the same interfaces, and the interfaces of the water inlet branch pipe (5) and the water outlet branch pipe (6) of the full-bridge power module water cooling assembly are the same as the interfaces of the water inlet branch pipe (5) and the water outlet branch pipe (6) of the half-bridge power module water cooling assembly.
5. The converter valve tower water distribution system with the full-bridge and half-bridge power modules in series-parallel connection according to claim 1, wherein: the diameter of full-bridge power module water-cooling subassembly's water inlet branch pipe (5) equals the diameter of half-bridge power module water-cooling subassembly's water inlet branch pipe (5), the diameter of full-bridge power module water-cooling subassembly's water outlet branch pipe (6) equals the diameter of half-bridge power module water-cooling subassembly's water outlet branch pipe (6).
6. The converter valve tower water distribution system with the full-bridge and half-bridge power modules in series-parallel connection according to claim 1, wherein: and a damping device (8) is arranged in the water inlet branch pipe (5) of the full-bridge power module water-cooling assembly or in the water inlet branch pipe (5) of the half-bridge power module water-cooling assembly.
7. The converter valve tower water distribution system of claim 6, wherein the converter valve tower water distribution system comprises a full-bridge power module and a half-bridge power module which are connected in series and in parallel, and the converter valve tower water distribution system comprises: damping device (8) are the pipeline, and the external diameter of pipeline is less than into water branch pipe (5) internal diameter, and the pipeline setting is in branch pipe (5) inner wall of intaking.
8. The converter valve tower water distribution system with the full-bridge and half-bridge power modules in series-parallel connection according to claim 1, wherein: the water inlet of the water pump is connected with the main water inlet pipeline (1) through a water inlet pipe, the end, away from the water inlet, of the main water inlet pipeline (1) is provided with an exhaust valve (7), and the end, away from the water outlet, of the main water return pipeline (2) is provided with the exhaust valve (7).
9. The converter valve tower water distribution system with the full-bridge and half-bridge power modules in series-parallel connection according to claim 1, wherein: the full-bridge power module water-cooling assembly comprises five cold plates, and the half-bridge power module water-cooling assembly comprises three cold plates.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391756A (en) * | 2018-12-14 | 2019-10-29 | 特变电工西安柔性输配电有限公司 | The change of current valve tower water distribution system and design method of full-bridge and half-bridge power module mixed connection |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391756A (en) * | 2018-12-14 | 2019-10-29 | 特变电工西安柔性输配电有限公司 | The change of current valve tower water distribution system and design method of full-bridge and half-bridge power module mixed connection |
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