Power module device and converter

Abstract

The utility model belongs to the technical field of electric power systems, and particularly discloses a power module device and a converter. According to the power module device provided by the utility model, the converter valve module and the capacitor module are arranged in the same cabinet body, so that the integration level of the power module device is improved, the structure is compact, the power module device can become an independent device and is convenient to mount and dismount, and the power module device and other devices in a converter do not influence each other; the capacitor module and the converter valve module are arranged up and down along the height direction of the cabinet body, so that the engineering occupied space of the power module device is reduced; the installation seat of the converter valve module is detachably connected with the cabinet body, the converter valve string is detachably arranged on the installation seat, the converter valve module is integrated, when the converter valve module breaks down, the converter valve module can be independently replaced or maintained, other parts in the power module device cannot be influenced, and disassembly and maintenance are convenient.

Description

Technical Field

[0001] This utility model relates to the field of power system technology, and in particular to a power module device and converter. Background Technology

[0002] In current converters, IGCT can replace conventional thyristor power electronic switching devices and is used in high-power converters, featuring high voltage withstand capability.

[0003] The structure of the converter is closely related to the electrical performance of the IGCT thyristor. Currently, the main models of converters separate the converter valve module and the capacitor module into two cabinets. The capacitor module and the converter valve module are connected by copper busbars. The power module has low integration and is not compact. The converter valve module and the capacitor module are placed in two different cabinets, which wastes a lot of space in the project. When the power module fails, disassembly and maintenance are inconvenient. Utility Model Content

[0004] The purpose of this utility model is to provide a power module device and converter, which improves the integration of the power module device, has a compact structure, occupies little space in the project, and is convenient for disassembly and maintenance when the power module device fails.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] In a first aspect, a power module device is provided, comprising:

[0007] Cabinet;

[0008] A converter valve module is provided, at least one of which includes a mounting base and at least one converter valve string. The converter valve string is detachably mounted on the mounting base, and the mounting base is detachably mounted inside the cabinet.

[0009] A capacitor module is installed inside the cabinet, along the height of the cabinet, below the converter valve module, and is electrically connected to the converter valve series via a busbar.

[0010] As an optional technical solution for the aforementioned power module device, a first support base is provided at the bottom of the cabinet, and a second support base is provided at a distance above the first support base. The second support base is connected to the mounting base, and the capacitor module is placed between the first support base and the second support base. The capacitor module is connected to the first support base.

[0011] As an optional technical solution for the aforementioned power module device, the first support base includes two first longitudinal beams and multiple first transverse beams. The two first longitudinal beams are connected to the two side walls of the cabinet, and the multiple first transverse beams are spaced apart. The two ends of the first transverse beams are connected to the two first longitudinal beams, and the capacitor module is mounted on the multiple first transverse beams.

[0012] As an optional technical solution for the aforementioned power module device, the second support base includes two second longitudinal beams and multiple second transverse beams. The two second longitudinal beams are connected to the two side walls of the cabinet, and the multiple second transverse beams are spaced apart. The two ends of the second transverse beams are connected to the two second longitudinal beams, and the mounting base rests on the multiple second transverse beams.

[0013] As an optional technical solution for the aforementioned power module device, the converter valve string includes at least one of IGCT devices and diode devices.

[0014] As an optional technical solution for the aforementioned power module device, the power module device further includes a cooling module, which is connected to the converter valve string and configured to cool the converter valve string.

[0015] As an optional technical solution for the aforementioned power module device, each of the converter valve modules is respectively provided with one of the cooling modules; and / or,

[0016] The converter valve module is provided in multiple ways, and each of the multiple converter valve modules is provided with a corresponding cooling module.

[0017] As an optional technical solution for the aforementioned power module device, the cooling module includes an inlet pipe, an outlet pipe, a first distribution pipe, a second distribution pipe, multiple connecting pipes, and multiple sets of liquid-cooled radiators. Each set of liquid-cooled radiators includes multiple liquid-cooled radiators. The liquid-cooled radiators are connected in series with the converter valve. The first distribution pipe is connected to the inlet pipe. In each set of liquid-cooled radiators, the inlet of the first liquid-cooled radiator is connected to the first distribution pipe. Two adjacent liquid-cooled radiators are connected through the connecting pipes. The outlet of the last liquid-cooled radiator is connected to the second distribution pipe, and the second distribution pipe is connected to the outlet pipe.

[0018] As an optional technical solution for the aforementioned power module device, the mounting base includes two spaced-apart I-beams, which are detachably connected to the cabinet. Multiple support plates are connected between the two I-beams. The converter valve is mounted on the support plates. The liquid inlet pipe is located in the inner groove of one of the I-beams, and the liquid outlet pipe is located in the inner groove of the other I-beam.

[0019] In a second aspect, a converter is provided, comprising the power module device described in any one of the above descriptions.

[0020] The beneficial effects of this utility model are:

[0021] The power module device provided by this utility model integrates the converter valve module and the capacitor module into the same cabinet, improving the integration of the power module device and making it compact. This allows the power module device to function as an independent unit, facilitating installation and disassembly without interfering with other components in the converter. The capacitor module and converter valve module are positioned vertically along the height of the cabinet, reducing the footprint of the power module device. The mounting base of the converter valve module is detachably connected to the cabinet, and a converter valve string is detachably mounted on the mounting base. The integrated converter valve module allows for individual replacement or repair of the converter valve module in case of failure, without affecting other components within the power module device, facilitating disassembly and maintenance. Attached Figure Description

[0022] Figure 1 This is a first axonometric view of the power module device provided in this embodiment of the present invention;

[0023] Figure 2 This is a second axonometric view of the power module device provided in this embodiment of the present invention;

[0024] Figure 3 This is an isometric view of the converter valve module and cooling module provided in this embodiment of the utility model;

[0025] Figure 4 This is a top view of the converter valve module and cooling module provided in this embodiment of the utility model.

[0026] In the picture:

[0027] 1. Cabinet; 2. Converter valve module; 3. Capacitor module; 4. Busbar; 5. First support base; 6. Second support base; 7. Cooling module;

[0028] 21. Mounting base; 211. I-beam; 212. Support plate; 22. Converter valve string;

[0029] 51. First longitudinal beam; 52. First transverse beam;

[0030] 61. Second longitudinal beam; 62. Second transverse beam;

[0031] 71. Liquid inlet pipe; 72. Liquid outlet pipe; 73. First liquid distribution pipe; 74. Second liquid distribution pipe; 75. Connecting pipe; 76. Liquid cooling radiator. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] like Figure 1 and Figure 2 As shown, this embodiment provides a power module device, which includes a cabinet 1, a converter valve module 2, and a capacitor module 3. At least one converter valve module 2 is provided, and each converter valve module 2 includes a mounting base 21 and at least one converter valve string 22. The converter valve string 22 is detachably mounted on the mounting base 21, and the mounting base 21 is detachably mounted inside the cabinet 1. The capacitor module 3 is disposed inside the cabinet 1, along the height direction of the cabinet 1, below the converter valve module 2, and is electrically connected to the converter valve string 22 via a busbar 4.

[0037] The power module device provided in this embodiment integrates the converter valve module 2 and the capacitor module 3 within the same cabinet 1, improving the integration of the power module device and making it compact. This allows the power module device to function as an independent unit, facilitating installation and disassembly without interfering with other components in the converter. The capacitor module 3 and converter valve module 2 are positioned vertically along the height of the cabinet 1, reducing the footprint of the power module device. The mounting base 21 of the converter valve module 2 is detachably connected to the cabinet 1, and a converter valve string 22 is detachably mounted on the mounting base 21. The integrated converter valve module 2 allows for individual replacement or repair in case of failure, without affecting other components within the power module device, facilitating disassembly and maintenance.

[0038] In the above, the busbar 4 used to connect the converter valve string 22 and the capacitor module 3 is a stacked busbar.

[0039] In some embodiments, such as Figure 1 and Figure 2 As shown, a first support base 5 is provided at the bottom of the cabinet 1, and a second support base 6 is provided above the first support base 5 at a distance. The second support base 6 is connected to the mounting base 21. The capacitor module 3 is placed between the first support base 5 and the second support base 6, and the capacitor module 3 is connected to the first support base 5. The first support base 5 provides support for the installation of the capacitor module 3, facilitating its installation inside the cabinet 1. The second support base 6 provides support for the installation of the mounting base 21, facilitating the installation of the converter valve module 2 inside the cabinet 1. The arrangement of the first support base 5 and the second support base 6 facilitates the installation of each module, realizes the modular installation of each module, and improves the integration of the power module device.

[0040] Optionally, the first support base 5 includes two first longitudinal beams 51 and multiple first transverse beams 52. The two first longitudinal beams 51 are connected to the two side walls of the cabinet 1, and the multiple first transverse beams 52 are spaced apart, with both ends of the first transverse beams 52 connected to the two first longitudinal beams 51. The capacitor module 3 is mounted on the multiple first transverse beams 52. The first support base 5 has a simple structure, using the first longitudinal beams 51 and the first transverse beams 52 to build a structure supporting the capacitor module 3, and can accommodate multiple capacitor modules 3, reducing the weight of the power module device. In addition, the gaps between the first transverse beams 52 and the first longitudinal beams 51 are beneficial for heat dissipation of the capacitor module 3.

[0041] The cabinet 1 includes a frame and panels covering the periphery of the frame. The first longitudinal beam 51 is bolted to the frame, and the first transverse beam 52 is bolted to the first longitudinal beam 51.

[0042] The second support base 6 includes two second longitudinal beams 61 and multiple second transverse beams 62. The two second longitudinal beams 61 are connected to the side walls of the cabinet 1, and the multiple second transverse beams 62 are spaced apart, with both ends of each transverse beam 62 connected to the two second longitudinal beams 61. The mounting base 21 rests on the multiple second transverse beams 62. The second support base 6 has a simple structure, using the second longitudinal beams 61 and the second transverse beams 62 to support the mounting base 21, and can accommodate multiple converter valve modules 2, reducing the weight of the power module device. Furthermore, the gaps between the second transverse beams 62 and the second longitudinal beams 61 facilitate heat dissipation of the converter valve modules 2. Optionally, the second longitudinal beams 61 are bolted to the frame of the cabinet 1, and the second transverse beams 62 are bolted to the second longitudinal beams 61.

[0043] In some embodiments, the commutation valve string 22 includes at least one of an IGCT device and a diode device. Optionally, the commutation valve string 22 includes an IGCT device, or the commutation valve string 22 includes a diode device, or the commutation valve string 22 includes both an IGCT device and a diode device; the configuration can be adjusted according to actual needs and is not specifically limited herein. The IGCT device is an integrated gate commutated thyristor.

[0044] The cabinet 1 is equipped with multiple converter valve modules 2. Some of the converter valve modules 2 include IGCT type converter valve strings 22, and other converter valve modules 2 include diode type converter valve strings 22. Alternatively, each converter valve string 22 of each converter valve module 2 may include both IGCT devices and diode devices. No specific limitation is made here.

[0045] IGCT devices are suitable for high-power converters, while IGBTs can be used instead of IGCTs for low-power converters.

[0046] The specific structure of the converter valve string 22 is existing technology and will not be described in detail here.

[0047] In some embodiments, such as Figure 3 and Figure 4 As shown, the power module device also includes a cooling module 7, which is connected to the converter valve string 22. The cooling module 7 is configured to cool the converter valve string 22 to reduce the heat generated during operation and extend the service life of the converter valve string 22.

[0048] Each converter valve module 2 is equipped with a corresponding cooling module 7, facilitating the replacement of individual converter valve modules 2. Alternatively, multiple converter valve modules 2 can be provided, with each multiple converter valve modules 2 corresponding to a cooling module 7, improving the integration of the structure and reducing the number of components.

[0049] Optionally, the cooling module 7 includes an inlet pipe 71, an outlet pipe 72, a first distribution pipe 73, a second distribution pipe 74, multiple connecting pipes 75, and multiple sets of liquid-cooled radiators 76. Each set of liquid-cooled radiators 76 includes multiple liquid-cooled radiators 76. The liquid-cooled radiators 76 are connected to the converter valve series 22. The first distribution pipe 73 is connected to the inlet pipe 71. In each set of liquid-cooled radiators 76, the inlet of the first liquid-cooled radiator 76 is connected to the first distribution pipe 73. Two adjacent liquid-cooled radiators 76 are connected through the connecting pipe 75. The outlet of the last liquid-cooled radiator 76 is connected to the second distribution pipe 74. The second distribution pipe 74 is connected to the outlet pipe 72. The coolant flows into the first distribution pipe 73 through the inlet pipe 71, and then flows through the first distribution pipe 73 to multiple sets of liquid-cooled radiators 76. The coolant first enters the first liquid-cooled radiator 76 in each set of liquid-cooled radiators 76, and then flows through each liquid-cooled radiator 76 in sequence through the connecting pipe 75. Then the coolant is discharged from the last liquid-cooled radiator 76 into the second distribution pipe 74, and then discharged through the outlet pipe 72, thus realizing the circulation of coolant and cooling the converter valve string 22 during the circulation process.

[0050] The converter valve string 22 includes IGCT devices or diode devices, and the liquid-cooled heat sink 76 is disposed between two adjacent IGCT devices or between adjacent diode devices. The specific connection structure between the liquid-cooled heat sink 76 and the converter valve string 22 is prior art and is not specifically limited here.

[0051] For example, each converter valve module 2 is provided with a corresponding cooling module 7. If multiple converter valve modules 2 are provided, the corresponding multiple cooling modules 7 are independent and not connected to each other. If multiple converter valve modules 2 are provided with one cooling module 7, then the cooling module 7 may include multiple first liquid distribution pipes 73 and / or multiple second liquid distribution pipes 74, depending on the specific situation, which will not be described in detail here.

[0052] Optionally, the mounting base 21 includes two spaced-apart I-beams 211. The I-beams 211 are detachably connected to the cabinet 1. Multiple support plates 212 connect the two I-beams 211. The converter valve string 22 is mounted on the support plate 212. The liquid inlet pipe 71 is located in the inner groove of one of the I-beams 211, and the liquid outlet pipe 72 is located in the inner groove of the other I-beam 211. The structure of the I-beams 211 can accommodate the liquid inlet pipe 71 and the liquid outlet pipe 72, improving the compactness of the connection structure between the converter valve module 2 and the cooling module 7, and ensuring that the liquid inlet pipe 71 and the liquid outlet pipe 72 are not damaged during the installation or removal of the converter valve module 2.

[0053] The cooling medium for cooling module 7 is preferably liquid water, which has low cooling costs.

[0054] This embodiment also provides a converter, including the power module device described above. The power module device is a device installed on the single-phase power supply in the converter. For a three-phase power converter, three power module devices are required.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A power module device, characterized in that, include: Cabinet (1); A converter valve module (2) is provided, at least one of which includes a mounting base (21) and at least one converter valve string (22). The converter valve string (22) is detachably mounted on the mounting base (21), and the mounting base (21) is detachably mounted inside the cabinet (1). A capacitor module (3) is installed inside the cabinet (1) along the height direction of the cabinet (1). The capacitor module (3) is located below the converter valve module (2). The capacitor module (3) is electrically connected to the converter valve string (22) through a busbar (4).

2. The power module device according to claim 1, characterized in that, The cabinet (1) has a first support base (5) at the bottom, and a second support base (6) is provided above the first support base (5) at a distance. The second support base (6) is connected to the mounting base (21). The capacitor module (3) is placed between the first support base (5) and the second support base (6). The capacitor module (3) is connected to the first support base (5).

3. The power module device according to claim 2, characterized in that, The first support base (5) includes two first longitudinal beams (51) and multiple first transverse beams (52). The two first longitudinal beams (51) are connected to the two side walls of the cabinet (1). The multiple first transverse beams (52) are spaced apart, and the two ends of the first transverse beams (52) are connected to the two first longitudinal beams (51). The capacitor module (3) is attached to the multiple first transverse beams (52).

4. The power module device according to claim 2, characterized in that, The second support base (6) includes two second longitudinal beams (61) and multiple second transverse beams (62). The two second longitudinal beams (61) are connected to the two side walls of the cabinet (1). The multiple second transverse beams (62) are spaced apart, and the two ends of the second transverse beams (62) are connected to the two second longitudinal beams (61). The mounting base (21) overlaps on the multiple second transverse beams (62).

5. The power module device according to claim 1, characterized in that, The converter valve string (22) includes at least one of an IGCT device and a diode device.

6. The power module device according to claim 1, characterized in that, The power module device further includes a cooling module (7) connected to the converter valve string (22) and configured to cool the converter valve string (22).

7. The power module device according to claim 6, characterized in that, Each of the aforementioned converter valve modules (2) is respectively provided with one of the aforementioned cooling modules (7); and / or, The converter valve module (2) is provided in multiple ways, and each of the multiple converter valve modules (2) is provided with a corresponding cooling module (7).

8. The power module device according to claim 6 or 7, characterized in that, The cooling module (7) includes an inlet pipe (71), an outlet pipe (72), a first distribution pipe (73), a second distribution pipe (74), multiple connecting pipes (75), and multiple sets of liquid-cooled radiators (76). Each set of liquid-cooled radiators (76) includes multiple liquid-cooled radiators (76). The liquid-cooled radiators (76) are connected to the converter valve string (22). The first distribution pipe (73) is connected to the inlet pipe (71). In each set of liquid-cooled radiators (76), the inlet of the first liquid-cooled radiator (76) is connected to the first distribution pipe (73). Two adjacent liquid-cooled radiators (76) are connected through the connecting pipes (75). The outlet of the last liquid-cooled radiator (76) is connected to the second distribution pipe (74). The second distribution pipe (74) is connected to the outlet pipe (72).

9. The power module device according to claim 8, characterized in that, The structure of the mounting base (21) includes two spaced I-beams (211), which are detachably connected to the cabinet (1). Multiple support plates (212) are connected between the two I-beams (211). The converter valve string (22) is installed on the support plate (212). The liquid inlet pipe (71) is located in the inner groove of one of the I-beams (211), and the liquid outlet pipe (72) is located in the inner groove of the other I-beam (211).

10. A converter, characterized in that, The power module device includes any one of claims 1-9.

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