Converter power module of wind generating set

Abstract

A converter power module of a wind generating set belongs to the technical field of wind power generation and comprises a driving plate, a laminated composite busbar, a capacitor, an IGBT (insulated gate bipolar transistor) assembly, a cooling fan assembly and a water cooling plate, the laminated composite busbar connects the capacitor with the IGBT assembly, the driving plate is connected with the IGBT assembly through a lead, the cooling fan assembly is arranged on the water cooling plate, and the water cooling plate is connected with the capacitor. The water cooling plate is provided with a pipeline used for water circulation, and the driving plate, the laminated composite busbar, the capacitor and the IGBT assembly are all arranged on the water cooling plate. The module integrates the advantages of two heat dissipation modes, the main body of the module adopts water-cooling heat dissipation, as the specific heat capacity of water is larger, the water-cooling heat dissipation effect is better, and devices which are not seriously heated outside the main body adopt air-cooling heat dissipation, the module has the advantages of small volume ratio, easiness in maintenance and the like; the power module has the advantages of being compact in structure, high in compatibility and matching performance, good in heat dissipation effect, capable of prolonging the service life of a product and convenient to install and maintain.

Description

Technical Field

[0001] This utility model belongs to the field of wind power generation technology, specifically relating to a power module for a wind turbine generator converter. Background Technology

[0002] Currently, power modules in the wind power converter market mainly use two cooling methods: water cooling and air cooling. Air-cooled power modules suffer from drawbacks such as prolonged fan vibration during use, leading to component fatigue and shortened lifespan, as well as ineffective heat dissipation and a small heat dissipation area. Maintenance costs are also higher because their cooling performance is inferior to water-cooled modules, requiring frequent maintenance and cleaning. However, water-cooled modules alone cannot meet practical needs.

[0003] The existing technology CN107425737B discloses a power module, converter and wind turbine generator set, which only uses a double-sided heat sink to achieve heat dissipation, which is not ideal and does not play a practical role in heat dissipation. Utility Model Content

[0004] To address the shortcomings of existing technologies, a power module for a wind turbine generator converter is provided, comprising a drive board, a laminated composite busbar, capacitors, IGBT components, a cooling fan assembly, and a water-cooled plate. The laminated composite busbar connects the capacitors and IGBT components. The drive board is connected to the IGBT components via wires. The cooling fan assembly is mounted on the water-cooled plate, and pipes for water flow are provided on the water-cooled plate. The drive board, laminated composite busbar, capacitors, and IGBT components are all mounted on the water-cooled plate.

[0005] Furthermore, the water-cooled plate is mounted on the mounting plate, and the mounting plate is used to mount the cooling fan assembly, side cover plate, and module upper frame.

[0006] Furthermore, a front cover plate and a front mounting plate are installed on the side cover plate, and a front small cover plate is installed on the front cover plate.

[0007] Furthermore, an SW handle is installed on the upper frame of the module.

[0008] Furthermore, a copper mounting column is provided on the water-cooled plate, a drive board mounting plate is mounted on the copper mounting column, a drive board is mounted on the drive board mounting plate, a bus capacitor fixing frame is fixedly provided on the copper mounting column, and a capacitor fixing plate is fixedly provided on the bus capacitor fixing frame.

[0009] Furthermore, a multilayer composite busbar is mounted on the capacitor, and an absorption capacitor is mounted on the multilayer composite busbar.

[0010] Furthermore, an AC copper busbar is installed on the IGBT assembly, and an external copper busbar is installed on the AC copper busbar.

[0011] Furthermore, a current sensor, a module inner frame, and a water-cooled plate clamp are installed on the water-cooled plate. A module upper frame is installed on the module inner frame, and an external connection mounting block is installed on the module upper frame. The water-cooled plate is connected to the mounting plate through the water-cooled plate clamp.

[0012] The beneficial effects of this utility model are:

[0013] 1. This module combines the advantages of two heat dissipation methods in its design.

[0014] 2. The main body of this module adopts water cooling. Since the main body of the module has a large power, the heat dissipation performance is particularly critical and directly determines the product quality.

[0015] 3. Because water has a higher specific heat capacity, water cooling is more effective at dissipating heat.

[0016] 4. Components that do not generate significant external heat are cooled by air, which has advantages such as small size and easy maintenance.

[0017] 5. This power module features a compact structure, strong compatibility, and good heat dissipation, increasing product lifespan and facilitating installation and maintenance. Attached Figure Description

[0018] Figure 1 This is an exploded view of the power module of the wind turbine generator converter of this utility model;

[0019] Figure 2 This utility model relates to the assembly of the power module of the wind turbine generator converter. Figure 1 ;

[0020] Figure 3 This utility model relates to the assembly of the power module of the wind turbine generator converter. Figure 2 ;

[0021] Figure 4 These are three views of the power module of the wind turbine generator converter of this utility model.

[0022] 1. Side cover plate, 2. Drive board, 3. Laminated composite busbar, 4. Absorption capacitor, 5. Drive board mounting plate, 6. Mounting copper pillar, 7. Capacitor fixing plate, 8. Busbar capacitor fixing bracket, 9. Capacitor, 10. IGBT assembly, 11. Cooling fan assembly, 12. SW handle, 13. External copper busbar, 14. AC copper busbar, 15. Current sensor, 16. Water-cooled plate, 17. Module upper frame, 18. External connection mounting block, 19. Module upper rack, 20. Module inner frame, 21. Front small cover plate, 22. Front cover plate, 23. Front mounting plate, 24. Mounting plate, 25. Water-cooled plate clamp. Detailed Implementation

[0023] Example 1

[0024] A wind turbine generator converter power module, such as Figures 1-4 As shown, the device includes a driver board 2, a multilayer composite busbar 3, a capacitor 9, an IGBT assembly 10, a cooling fan assembly 11, and a water-cooled plate 16. The multilayer composite busbar 3 connects the capacitor 9 and the IGBT assembly 10. The driver board 2 is connected to the IGBT assembly 10 via wires. The cooling fan assembly 11 is mounted on the water-cooled plate 16, and the water-cooled plate 16 has pipes for water flow. The driver board 2, the multilayer composite busbar 3, the capacitor 9, and the IGBT assembly 10 are all mounted on the water-cooled plate 16.

[0025] The water-cooled plate 16 is mounted on the mounting plate 24, and the cooling fan assembly 11, the side cover plate 1, and the module upper frame 17 are mounted on the mounting plate 24.

[0026] The side cover plate 1 is equipped with a front cover plate 22 and a front mounting plate 23, and the front cover plate 22 is equipped with a front small cover plate 21.

[0027] The module's upper frame 17 is equipped with an SW handle 12.

[0028] The water-cooled plate 16 is provided with a copper column 6, a drive board mounting plate 5 is installed on the copper column 6, a drive board 2 is installed on the drive board mounting plate 5, a bus capacitor fixing frame 8 is fixedly installed on the copper column 6, and a capacitor fixing plate 7 is fixedly installed on the bus capacitor fixing frame 8.

[0029] The capacitor 9 is mounted on a stacked composite busbar 3, and the stacked composite busbar 3 is mounted on an absorption capacitor 4.

[0030] An AC copper busbar 14 is installed on the IGBT assembly 10, and an external copper busbar 13 is installed on the AC copper busbar 14.

[0031] The water-cooled plate 16 is equipped with a current sensor 15, a module inner frame 20, and a water-cooled plate clamping plate 25. The module inner frame 20 is equipped with a module upper frame 19, and the module upper frame 19 is equipped with an external connection mounting block 18. The water-cooled plate 16 is connected to the mounting plate 24 through the water-cooled plate clamping plate 25.

[0032] The functions of each component are as follows:

[0033] The function of side cover 1 is to protect internal components;

[0034] The function of driver board 2 is to control the operation of IGBT assembly 10;

[0035] The function of the multilayer composite busbar 3 is to connect the capacitor and the IGBT assembly 10;

[0036] The function of absorption capacitor 4 is to absorb voltage spikes;

[0037] The function of driver board mounting plate 5 is to mount driver board 2;

[0038] The purpose of installing copper pillar 6 is to install drive board mounting plate 5;

[0039] The function of capacitor fixing plate 7 is to fix capacitor 9;

[0040] The function of bus capacitor mounting bracket 8 is to fix the capacitor;

[0041] The function of capacitor 9 is to store energy and filter it;

[0042] The function of IGBT component 10 is to provide rectifier and inverter protection;

[0043] The function of the cooling fan assembly 11 is to dissipate heat;

[0044] The purpose of SW handle 12 is to make it easy to pick up;

[0045] The function of the external copper busbar 13 is to conduct electricity;

[0046] The function of AC copper busbar 14 is to conduct electricity;

[0047] The function of current sensor 15 is to detect current;

[0048] The function of the water-cooled plate 16 is to dissipate heat;

[0049] The purpose of frame 17 on the module is for protection;

[0050] The function of the external connection mounting block 18 is to fix the laminated composite busbar 3;

[0051] The function of module mounting 19 is to fix the external connection mounting block 18;

[0052] The function of the module inner frame 20, front small cover plate 21, front cover plate 22, front mounting plate 23, and mounting plate 24 is protection;

[0053] The function of the water-cooled plate clamp 25 is to fix the water-cooled plate 16.

[0054] The multilayer composite busbar 3 connects the capacitor 9 and the IGBT assembly 10 to control the current and improve the stability and reliability of the system. The driver board 2 is connected to the IGBT assembly 10 via wires to control and detect the IGBT status.

[0055] Example 2

[0056] This utility model provides a novel power module, mainly used in wind-cooled converters for wind power generation. The design principle is as follows:

[0057] The external sheet metal parts of the module are made of standard 5052 aluminum alloy, which has excellent corrosion resistance and is both beautiful and practical.

[0058] By optimizing the control principle, the number of IGBTs used in a single module is reduced;

[0059] The IGBT components 10 are distributed on both sides of the water-cooled plate 16. The water-cooled plate 16 also has two flow channels, distributed on both sides respectively. Compared with the traditional single flow channel, the dual flow channel has a larger heat dissipation area and better heat dissipation effect. Furthermore, the water-cooling connector uses a snap-fit ​​nut to prevent the heavy water pipes from rotating back and forth during connection, greatly reducing the difficulty of construction. The water-cooling connector is connected to the water-cooled plate 16 by a threaded connection, which prevents water leakage at the joint.

[0060] The bus capacitors are large-capacity metal film capacitors, which effectively reduce the number of capacitors used in a single module and provide excellent and stable performance.

[0061] The bus capacitor and IGBT are connected and conducted through the laminated composite busbar 3, which can ensure a balanced distribution of positive and negative current in the system.

[0062] The upper components of the water-cooled plate 16 are fully protected, effectively protecting core components such as the IBGT and control board, and the appearance is also aesthetically pleasing.

[0063] The technical solution of this utility model is as follows:

[0064] This utility model includes: a side cover plate 1, a drive plate 2, a laminated composite busbar 3, an absorption capacitor 4, a drive plate mounting plate 5, a mounting copper column 6, a resin capacitor fixing plate 7, a busbar capacitor fixing bracket 8, a 200μF-1300VDC capacitor 9, an IGBT assembly 10, a cooling fan assembly 11, an SW handle with a hole spacing of 100mm 12, an external copper busbar 13, an AC copper busbar 14, a current sensor 15, a water-cooled plate 16, a module upper frame 17, an external connection mounting block 18, a bakelite module upper frame 19, a module inner frame 20, a front small cover plate 21, a front cover plate 22, a front mounting plate 23, a mounting plate 24, and a water-cooled plate clamping plate 25.

[0065] The copper mounting column 6, the 200μF_1300VDC capacitor 9, the current sensor 15, the module inner frame 20, the water-cooled plate clamp 25, and the IGBT assembly 10 are all mounted on the water-cooled plate 16.

[0066] The water-cooled plate 16 is installed on the mounting plate 24;

[0067] The drive board mounting plate 5 is mounted on the mounting copper pillar 6;

[0068] The drive board 2 is mounted on the drive board mounting plate 5;

[0069] The aforementioned multilayer composite busbar 3 is mounted on the capacitor 200μF_1300VDC9;

[0070] The absorption capacitor 4 is mounted on the stacked composite busbar 3;

[0071] The bus capacitor mounting bracket 8 is fixed to the mounting copper column 6;

[0072] The resin capacitor fixing plate 7 is fixed to the bus capacitor fixing frame 8.

[0073] The AC copper busbar 14 is mounted on the IGBT assembly 10;

[0074] The external copper busbar 13 is installed on the AC copper busbar 14;

[0075] The cooling fan assembly 11, side cover plate 1, and module upper frame 17 are installed on the mounting plate 24;

[0076] The aforementioned module rack_bakelite 19 is installed onto the module inner rack 20;

[0077] The external connection mounting block 18 is attached to the module mounting bracket 19;

[0078] The SW handle hole spacing 100mm12 is installed on the upper frame 17 of the module;

[0079] The front mounting plate 23 and the front cover plate 22 are mounted onto the side cover plate 1;

[0080] The front cover plate 21 is installed on the front cover plate 22;

[0081] The key points and areas to be protected in this utility model are:

[0082] 1. The external sheet metal components of the module adopt a standard aluminum alloy shell, which reduces weight and is both aesthetically pleasing and practical;

[0083] 2. Through optimization of the control principle, the number of IGBTs used in a single module is reduced to a total of 6;

[0084] 3. The dual-channel structure design significantly increases the heat dissipation area, resulting in a marked improvement in heat dissipation performance;

[0085] 4. Using metal film capacitors results in lower prices and superior performance;

[0086] 5. The water-cooled plate joint uses a snap-fit ​​nut for easier water pipe connection.

[0087] Other alternatives

[0088] Potentially similar technical solutions:

[0089] 1. Other materials can be selected for the external sheet metal components of the module, such as stainless steel, galvanized sheet, engineering resin, fiberglass, etc.

[0090] 2. The flow channels of the water-cooled plate can be made into a single flow channel, etc.

[0091] 3. Electrolytic capacitors can be used as bus capacitors.

[0092] 4. The number of current sensors can be reduced and they can be installed outside the module, etc.

[0093] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A power module for a wind turbine generator converter, characterized in that, The device includes a driver board (2), a multilayer composite busbar (3), a capacitor (9), an IGBT assembly (10), a cooling fan assembly (11), and a water-cooled plate (16). The multilayer composite busbar (3) connects the capacitor (9) and the IGBT assembly (10). The driver board (2) is connected to the IGBT assembly (10) via wires. The cooling fan assembly (11) is mounted on the water-cooled plate (16), and the water-cooled plate (16) is provided with pipes for water flow. The driver board (2), multilayer composite busbar (3), capacitor (9), and IGBT assembly (10) are all mounted on the water-cooled plate (16).

2. The wind turbine generator converter power module according to claim 1, characterized in that, The water-cooled plate (16) is installed on the mounting plate (24), and the cooling fan assembly (11), side cover plate (1), and module upper frame (17) are installed on the mounting plate (24).

3. The wind turbine generator converter power module according to claim 2, characterized in that, A front cover plate (22) and a front mounting plate (23) are installed on the side cover plate (1), and a front small cover plate (21) is installed on the front cover plate (22).

4. The wind turbine generator converter power module according to claim 2, characterized in that, The SW handle (12) is installed on the upper frame (17) of the module.

5. The wind turbine generator converter power module according to claim 4, characterized in that, A copper column (6) is installed on the water-cooled plate (16), a drive board mounting plate (5) is installed on the copper column (6), a drive board (2) is installed on the drive board mounting plate (5), a bus capacitor fixing frame (8) is fixedly installed on the copper column (6), and a capacitor fixing plate (7) is fixedly installed on the bus capacitor fixing frame (8).

6. The wind turbine generator converter power module according to claim 5, characterized in that, A multilayer composite busbar (3) is installed on the capacitor (9), and an absorption capacitor (4) is installed on the multilayer composite busbar (3).

7. The wind turbine generator converter power module according to claim 6, characterized in that, An AC copper busbar (14) is installed on the IGBT assembly (10), and an external copper busbar (13) is installed on the AC copper busbar (14).

8. The wind turbine generator converter power module according to claim 7, characterized in that, A current sensor (15), a module inner frame (20), and a water-cooled plate clamp (25) are installed on the water-cooled plate (16). A module upper frame (19) is installed on the module inner frame (20). An external connection mounting block (18) is installed on the module upper frame (19). The water-cooled plate (16) is connected to the mounting plate (24) through the water-cooled plate clamp (25).

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