Converter module and converter

Abstract

The converter module comprises a first basic unit and a second basic unit which are assembled in a stacked mode, and the first basic unit comprises a radiator, an IGBT assembly, an alternating current copper bar, a horizontal low-sensitivity busbar, a vertical low-sensitivity busbar and a supporting screw rod. The second basic unit comprises a supporting capacitor, a stand column, a control unit and a DC / DC power module, and the first basic unit comprises a plurality of IGBT assembly installation positions which are used for configuring IGBT assemblies of different specifications and numbers so as to achieve the traction or auxiliary inversion function. The converter module adopts a unified appearance structure, a plurality of IGBT assembly mounting positions are arranged and preset on the radiator, IGBT devices of different specifications and numbers can be configured according to different requirements, so that the functions of traction, auxiliary inversion and the like are met, and the converter module adopts a laminated mounting mode, is sequentially mounted from bottom to top, and is simple, convenient and convenient to maintain.

Description

Technical Field

[0001] The invention relates to the field of low-floor and shunting locomotive traction converters, and in particular to a converter module and a converter. Background Art

[0002] Due to the wide application range and high demand for personalized customization of small and medium power converter modules, different application requirements usually put forward higher requirements for certain performance aspects of converter modules, such as power density, life, reliability, cost, etc. The converter module is the core circuit part of the converter, so designing a simplified and unified small and medium power converter module platform can solve different functional requirements such as power density, life, reliability and cost.

[0003] At present, there is a great demand for projects in the fields of low-floor vehicles in rail transit vehicles and shunting vehicles in the locomotive field in China, but the demand for a single project is small and the requirements for personalized customization are high. The converter module needs to design a simplified module platform. On the basis of the simplified module platform, by configuring different combinations of key components such as IGBT, driver board, DCU (drive control unit), supporting capacitors, etc. according to different functional requirements, the module can meet the functional requirements of different projects and increase the versatility of small and medium-power converter modules. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a novel IGBT multifunctional converter module and converter.

[0005] A first aspect of the present invention provides a converter module, comprising a first basic unit and a second basic unit that are stacked and assembled, wherein the first basic unit comprises a heat sink, an IGBT component, an AC copper busbar, a horizontal low-inductance busbar, a vertical low-inductance busbar and a support screw, and the second basic unit comprises a supporting capacitor, a column, a control unit and a DC / DC power supply module, wherein the first basic unit comprises a plurality of IGBT component mounting positions for configuring IGBT components of different specifications and quantities to achieve traction or auxiliary reverse functions.

[0006] In one embodiment, the IGBT assembly includes an IGBT device and a gate drive unit, the gate drive unit matches the shape of the IGBT device and is embedded and attached to the IGBT device, and the IGBT device and the gate drive unit are electrically connected by welding.

[0007] In one embodiment, the IGBT component is fixed on the heat sink, and the bottom of the IGBT component is coated with thermal conductive silicone grease.

[0008] In one embodiment, an AC terminal block and a DC terminal block are also fixed on the heat sink, one end of the AC copper busbar is fixed on the IGBT component, and the other end is overlapped on the AC terminal block, the end of the horizontal low-inductance busbar is connected to the DC terminal block, one end of the vertical low-inductance busbar is fixedly connected to the horizontal low-inductance busbar, and the other end is fixed on the supporting capacitor.

[0009] In one embodiment, the first basic unit further includes a protection plate, which is fixed to the heat sink via support studs to protect the gate drive unit in the IGBT assembly, and a wire binding hole is provided on the protection plate.

[0010] In one embodiment, the IGBT device includes a device with a current specification of 600A and / or 800A.

[0011] In one embodiment, the supporting capacitor includes a plurality of cylindrical capacitor mounting positions to configure cylindrical capacitors of different specifications and quantities, and the plurality of cylindrical capacitors are connected in parallel.

[0012] In one embodiment, the converter module is provided with 8 IGBT components, and the 8 IGBT components are configured to include two three-phase traction inverter units and two chopper units, and the three-phase traction inverter units are driven by a single tube; or the 8 IGBT components are configured to include one three-phase traction inverter unit and two chopper units, and the three-phase traction inverter unit is driven by two IGBT components in parallel.

[0013] In one embodiment, the converter module is provided with 12 IGBT components, and the 12 IGBT components are configured as two three-phase traction inverter units, and the three-phase traction inverter units are driven by two IGBT components in parallel.

[0014] In one embodiment, the converter module is provided with 14 IGBT components, and the 14 IGBT components are configured to include four traction inverter units and two chopper units, and the traction inverter unit adopts a single-tube output; or the 14 IGBT components are configured to include two traction inverter units and two chopper units, and the traction inverter unit adopts parallel output of every two IGBT components; or the 14 IGBT components are configured to include two three-phase traction inverter units, two DC / DC units, one energy feedback unit and two chopper units, and the three-phase traction inverter unit adopts a single-tube output, and the energy feedback unit and the DC / DC unit both adopt parallel output of every two IGBT components.

[0015] In one embodiment, the converter module is provided with 14 IGBT components, and the 14 IGBT components are configured to include three three-phase auxiliary inverter units, two DC / DC units and one chopper unit. The three-phase auxiliary inverter unit adopts a single-tube output, and the DC / DC unit adopts two IGBT components in parallel; or the 14 IGBT components are configured to include two controllable rectifier units, two auxiliary inverter units and two chopper units. The auxiliary inverter unit adopts a single-tube output, and the controlled rectifier unit adopts two IGBT devices in parallel output.

[0016] In one embodiment, the second basic unit further includes at least two PT100s, and the PT100 is fixed on the heat sink to perform over-temperature protection on the converter module when the surface of the heat sink is over-temperature.

[0017] In one embodiment, the supporting capacitor is fixed on the epoxy cloth board and the capacitor bracket, the epoxy cloth board is fixed on the capacitor bracket, the capacitor bracket is installed on the column through a capacitor support, and the capacitor bracket and the capacitor support and the capacitor support and the column are fastened by screws.

[0018] In one embodiment, the second basic unit also includes a control layer support frame, which is installed on the capacitor support. The control unit and the DC / DC power supply module are fixed on the control layer support frame. The control layer support frame is also provided with a handle to facilitate the installation and disassembly of the module control layer.

[0019] In one embodiment, the column is provided with a column handle for facilitating the transportation of the converter module.

[0020] A second aspect of the present invention provides a converter, comprising the above converter module.

[0021] Compared with the prior art, the converter module of the present invention has the following advantages:

[0022] 1. With a unified appearance structure, 14 IGBT component positions are preset on the radiator. IGBT devices of different specifications and quantities can be configured according to different needs to meet functions such as traction and auxiliary inverter. The converter module is installed in layers from bottom to top, which is simple, convenient and easy to maintain.

[0023] 2. Through different combinations and configurations of key components such as radiator, IGBT, driver board, support capacitor, DCU (including software), etc., it can meet the functional requirements of different projects in the low-floor field and shunting locomotive field;

[0024] 3. The converter module support capacitor adopts a solution of multiple cylindrical capacitors in parallel. The specifications and quantity of the cylindrical capacitors can be configured according to different parameter requirements, effectively improving the versatility of the module and reducing costs;

[0025] 4. The converter module adopts a drive and detection integrated board, which is welded and installed on the IGBT device to save module space;

[0026] 5. The module integrates DCU and meets different circuit function requirements by configuring different control software / hardware.

[0027] The above-mentioned technical features can be combined in various technically feasible ways to produce new embodiments, as long as the purpose of the present invention can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The invention will be described in more detail below based on non-limiting examples and with reference to the accompanying drawings, in which:

[0029] Figure 1 It shows a schematic structural diagram of a converter module according to the present invention;

[0030] Figure 2 Shows Figure 1 A schematic structural diagram of a first unit of a converter module;

[0031] Figure 3 Shows Figure 1 A schematic diagram of the structure of the second unit of the converter module;

[0032] Figure 4 Shows Figure 2 Schematic diagram of the structure of the IGBT component;

[0033] Figure 5-Figure 6 The schematic diagram of the configuration of the 8 IGBT components of the converter module for traction function is shown;

[0034] Figure 7 The schematic diagram of the configuration of 12 IGBT components of the converter module for traction function is shown;

[0035] Figure 8-Figure 10 The schematic diagram of the configuration of 14 IGBT components of the converter module for traction function is shown;

[0036] Figure 11-Figure 12 A schematic diagram showing the configuration of 14 IGBT components in a converter module with auxiliary inverter function.

[0037] In the figures, the same components are indicated by the same reference numerals. The figures are not drawn to scale.

[0038] Wherein, the accompanying drawings are marked as follows:

[0039] 1. Converter module; 1000. First basic unit; 1010. Heat sink; 1020. IGBT assembly; 1021. IGBT device; 1022. Gate drive unit; 1030. AC copper busbar; 1040. AC wiring seat; 1050. DC wiring seat; 1060. Horizontal low-inductance busbar; 1070. Vertical low-inductance busbar; 1080. Support screw; 1090. Protective plate; 1100. Wire support; 1110. PT100; 1120. AC wiring seat; 2000. Second basic unit; 2010. Support Support capacitor; 2020, column; 2030, capacitor support; 2040, capacitor bracket side plate; 2050, capacitor bracket; 2060, capacitor support rod; 2070, epoxy cloth board; 2080, control layer support frame; 2090, handle; 2100, column handle; 2110, control unit; 2120, DC / DC power supply module; 3000, traction inverter unit; 3010, chopper unit; 3020, auxiliary inverter unit; 3030, DC / DC unit; 3040, energy feedback unit; 3050, controllable rectifier unit. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, as long as there is no conflict, the various embodiments of the present invention and the various features in the embodiments can be combined with each other, and the technical solutions formed are all within the protection scope of the present invention.

[0041] Parts not described in the present invention can be implemented by adopting or drawing on existing technologies.

[0042] like Figure 1 to Figure 3 As shown, the first aspect of the present invention provides a converter module 1, including a first basic unit 1000 and a second basic unit 2000 which are stacked and assembled, wherein the first basic unit 1000 includes a heat sink 1010, an IGBT component 1020, an AC copper busbar 1030, a horizontal low-inductance busbar 1060, a vertical low-inductance busbar 1070 and a support screw 1080, and the second basic unit includes a support capacitor 25010, a column 2020, a control unit 2110 and a DC / DC power supply module 2120, wherein the first basic unit 1000 includes a plurality of installation positions for IGBT components 1020, so as to configure IGBT components of different specifications and quantities to realize traction or auxiliary reverse function.

[0043] The converter module of this embodiment adopts a uniform appearance structure, and multiple (for example, up to 14) IGBT component positions are preset on the heat sink. IGBT devices of different specifications and quantities can be configured according to different needs to meet functions such as traction and auxiliary inversion. The converter module adopts a stacked installation method, which is installed from bottom to top in sequence, which is simple, convenient and easy to maintain.

[0044] In some optional embodiments, the bottom of the IGBT component 1020 is coated with thermal conductive silicone grease and fixed on the heat sink 1010, such as Figure 4 As shown, the IGBT component 1020 includes an IGBT device 1021 and a gate drive unit 1022. The gate drive unit 1022 is developed and designed according to the shape of the IGBT and is embedded and attached to the IGBT device 1021. The IGBT device 1021 and the gate drive unit 1022 are electrically connected by welding, which can ensure the reliability of the IGBT operation and save space.

[0045] In some specific embodiments, an AC terminal block 1040 and a DC terminal block 1050 are also fixed to the heat sink 1010 by screws, one end of the AC copper busbar 1030 is fixed to the IGBT component 1020, and the other end is overlapped on the AC terminal block 1040 and / or the AC terminal block 1120, the horizontal low-inductance busbar 1060 is fastened to the IGBT component 1020 by screws, and the end is connected to the DC terminal block 1050, and one end of the vertical low-inductance busbar 1070 is fastened to the horizontal low-inductance busbar 1060 by screws, and the other end is fixed to the supporting capacitor 2010.

[0046] In some specific embodiments, the first basic unit 1000 also includes a protective plate 1090, which is fixed to the heat sink 1010 through a support screw 1080 to protect the gate drive unit 1022 in the IGBT component 1020. The protective plate 1090 is provided with wire binding holes to facilitate wiring inside the inverter module.

[0047] In some specific embodiments, the multiple IGBT components 1020 use a driving and detecting integrated board, and the driving and detecting integrated board is welded on the multiple IGBT components to save module space.

[0048] In some specific embodiments, the converter module 1 can be installed with up to 14 IGBT components, so that the converter module can be applied to low-floor and shunting locomotive projects with different functional requirements. The rated reference voltage of the IGBT is 1700V, and IGBT devices with current specifications of 600A and / or 800A can be selected. Both devices with current specifications belong to the new bridge arm packaging type, and the external electrical and mechanical installation interfaces remain compatible.

[0049] In some specific embodiments, the supporting capacitor 2010 includes a plurality of cylindrical capacitor mounting positions, and the plurality of cylindrical capacitors are connected in parallel. By setting a plurality of cylindrical capacitor mounting positions, cylindrical capacitors of different specifications and quantities can be configured according to different parameter requirements, thereby effectively improving the versatility of the module and reducing costs.

[0050] like Figure 3As shown, the second basic unit 2000 also includes at least 2 PT100 (1110), and the PT100 is fixed on the radiator 1010. When the radiator table is over-temperature, the PT100 will feed back an action signal to the transmission control unit of the converter module 1 to perform over-temperature protection on the converter module.

[0051] In some specific embodiments, the supporting capacitor 2010 is fixed on the epoxy cloth board 2070 and the capacitor bracket 2050, the epoxy cloth board 2070 is fixed on the capacitor bracket 2050 by screws, the capacitor bracket 2050 is installed on the column 2020 through the capacitor support 2030, and the capacitor bracket 2050 and the capacitor support 2030 and the column 2020 are fastened by screws.

[0052] Continue to refer Figure 3 The second basic unit 2000 also includes a control layer support frame 2080, which is installed on the capacitor support 2030. The control unit 2110 and the DC / DC power module 2120 are fixed to the control layer support frame 2080 by screws. A handle 2090 is also provided on the control layer support frame 2080 to facilitate the installation and disassembly of the module control layer (control unit 2110 and DC / DC power module 2120).

[0053] The control unit 2110 uses an integrated DCU and can meet different circuit function requirements by configuring different control software / hardware.

[0054] More specifically, a column handle 2100 is provided on the column 2020 to facilitate the transportation of the converter module.

[0055] The converter module of the present invention can realize the traction or auxiliary inversion function by configuring IGBT components of different specifications and quantities.

[0056] The specific configuration of the converter module is described below with reference to a specific embodiment.

[0057] In some specific embodiments, the converter module realizing the traction function may be configured with eight IGBT components 1020, such as Figure 5 As shown, the eight IGBT components 1020 are configured to include two three-phase traction inverter units 3000 and two chopper units 3010. This configuration is mainly used to meet low-floor applications. The starting and rated current of the traction motor do not need to be very large, and a single-tube drive method can be adopted. Each inverter output can drive one traction motor, and a total of two motors can be driven to operate, thereby realizing axle control.

[0058] In some other specific embodiments, Figure 6As shown, the eight IGBT components 1020 for realizing the traction function can also be configured to include one three-phase traction inverter unit 3000 and two chopper units 3010. This configuration is mainly used to meet low-floor applications, and the starting and rated current of the traction motor do not need to be very large. Among them, the three-phase traction inverter unit 3000 adopts a method of driving two devices in parallel, and each inverter output drives two traction motors. A total of two motors can be driven to operate, thereby realizing frame control.

[0059] In some optional embodiments, Figure 7 As shown, the converter module 1 realizing the traction function can be configured with 12 IGBT components 1020, and the 12 IGBT components are configured as two three-phase traction inverter units 3000. This configuration is mainly used to meet the application of shunting locomotives. Each module can drive two traction motors (realizing axle control) or four traction motors (realizing frame control) by driving two IGBT components in parallel.

[0060] In some other optional embodiments, the converter module 1 realizing the traction function may be configured with 14 IGBT components 1020, such as Figure 8 As shown, the 14 IGBT components can be optionally configured to include four traction inverter units 3000 and two chopper units 3010 to meet the needs of low floors. The traction inverter unit 3000 uses a single-tube output and can drive four traction motors.

[0061] In some other optional embodiments, such as Fig. 9 The 14 IGBT components 1020 shown can be optionally configured to include two traction inverter units 3000 and two chopper units 3010 to meet the needs of shunting locomotives. The traction inverter unit uses two IGBT components in parallel output, and each converter module 1 can drive two traction motors (to achieve axle control) or four traction motors (to achieve frame control);

[0062] or Fig.10 As shown, the 14 IGBT components 1020 are configured to include two three-phase traction inverter units 3000, two DC / DC units 3030, one energy feedback unit 3040 and two chopper units 3010, which are mainly used to meet the needs of low floors. The three-phase traction inverter unit 3000 adopts a single-tube output, and the energy feedback unit 3040 and the DC / DC unit 3030 both use two IGBT components 1020 in parallel. Each converter module 1 can drive two traction motors.

[0063] The converter module 1 realizing the auxiliary inversion function may be provided with 14 IGBT components 1020, such as Fig.11As shown, the 14 IGBT components 1020 are configured to include three three-phase auxiliary inverter units 3020, two DC / DC units 3030 and one chopper unit 3010 to meet the needs of shunting locomotives, wherein the three-phase auxiliary inverter unit 3020 adopts a single-tube output, and the DC / DC unit 3030 adopts a parallel output method for every two IGBT components 1020.

[0064] In other optional embodiments, such as Fig.12 As shown, the 14 IGBT components 1020 can also be configured to include two controllable rectifier units 3050, two auxiliary inverter units 3020 and two chopper units 3010 to meet the needs of shunting locomotives, wherein the auxiliary inverter unit 3020 adopts a single-tube output, and the controllable rectifier unit 3050 adopts a parallel output of every two IGBT components 1020.

[0065] In addition to the configuration examples listed above, other key components such as IGBT, drive board, DCU (including software and hardware), support capacitors and other key components can be configured in different combinations to meet the functional requirements of different projects in the low-floor and shunting locomotive fields.

[0066] The second aspect of the present invention further provides a converter, comprising a converter module 1 of any one or a combination of the above. Therefore, the converter also has the beneficial effects of the above converter module.

[0067] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The terms "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. In the description of the present invention, the orientation or position relationship indicated by the terms "vertical" and the like is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. When the absolute position of the described object changes, the relative position relationship may also change accordingly, so it cannot be understood as a limitation of the present invention.

[0068] At this point, those skilled in the art should recognize that, although the present invention has been described with reference to the preferred embodiments, various improvements may be made thereto and components therein may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments may be combined in any manner. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions within the scope of the claims. In addition to the configuration examples listed herein, other different combination configurations of key components such as IGBT, driver board, DCU, support capacitors, etc. also fall within the scope of protection of the patent invention.

Claims

1. A converter module, characterized in that: It comprises a first basic unit and a second basic unit which are stacked and assembled, wherein the first basic unit comprises a heat sink, an IGBT component, an AC copper busbar, a horizontal low-inductance busbar, a vertical low-inductance busbar and a supporting screw, and the second basic unit comprises a supporting capacitor, a column, a control unit and a DC / DC power supply module, wherein the first basic unit comprises a plurality of IGBT component mounting positions for configuring IGBT components of different specifications and quantities to realize traction or auxiliary reverse function.

2. The converter module according to claim 1, characterized in that: The IGBT assembly is fixed on the heat sink. The IGBT assembly includes an IGBT device and a gate drive unit. The gate drive unit matches the shape of the IGBT device and is embedded and attached to the IGBT device. The IGBT device and the gate drive unit are electrically connected by welding.

3. The converter module according to claim 2, characterized in that: An AC terminal block and a DC terminal block are also fixed on the radiator. One end of the AC copper busbar is fixed on the IGBT component, and the other end is overlapped on the AC terminal block. The end of the horizontal low-inductance busbar is connected to the DC terminal block. One end of the vertical low-inductance busbar is fixedly connected to the horizontal low-inductance busbar, and the other end is fixed on the supporting capacitor.

4. The converter module according to claim 3, characterized in that: The first basic unit further includes a protection plate, which is fixed to the heat sink via support studs to protect the gate drive unit in the IGBT assembly, and a wire binding hole is provided on the protection plate.

5. The converter module according to claim 3, characterized in that: The bottom of the IGBT component is coated with thermal conductive silicone grease, and multiple IGBT components use a drive detection integrated board, which is welded on the multiple IGBT components.

6. The converter module according to claim 5, characterized in that: The IGBT device includes a device with a current specification of 600A and / or 800A.

7. The converter module according to claim 6, characterized in that: The supporting capacitor comprises a plurality of cylindrical capacitor mounting positions to configure cylindrical capacitors of different specifications and quantities, and the plurality of cylindrical capacitors are connected in parallel.

8. The converter module according to claim 7, characterized in that The converter module is provided with 8 IGBT components, and the 8 IGBT components are configured to include two three-phase traction inverter units and two chopper units, and the three-phase traction inverter units are driven by a single tube; or the 8 IGBT components are configured to include one three-phase traction inverter unit and two chopper units, and the three-phase traction inverter units are driven by two IGBT components in parallel.

9. The converter module according to claim 7, characterized in that: The converter module is provided with 12 IGBT components, and the 12 IGBT components are configured as two three-phase traction inverter units. The three-phase traction inverter units are driven by two IGBT components in parallel.

10. The converter module according to claim 7, characterized in that: The converter module is provided with 14 IGBT components, and the 14 IGBT components are configured to include four traction inverter units and two chopper units, and the traction inverter unit adopts a single-tube output; or the 14 IGBT components are configured to include two traction inverter units and two chopper units, and the traction inverter unit adopts parallel output of every two IGBT components; or the 14 IGBT components are configured to include two three-phase traction inverter units, two DC / DC units, one energy feedback unit and two chopper units, and the three-phase traction inverter unit adopts a single-tube output, and the energy feedback unit and the DC / DC unit both adopt parallel output of every two IGBT components.

11. The converter module according to claim 7, characterized in that: The converter module is provided with 14 IGBT components, and the 14 IGBT components are configured to include three three-phase auxiliary inverter units, two DC / DC units and one chopper unit. The three-phase auxiliary inverter unit adopts a single-tube output, and the DC / DC unit adopts two IGBT components in parallel; or the 14 IGBT components are configured to include two controllable rectifier units, two auxiliary inverter units and two chopper units. The auxiliary inverter unit adopts a single-tube output, and the controlled rectifier unit adopts two IGBT devices in parallel output.

12. The converter module according to any one of claims 1 to 11, characterized in that: The second basic unit also includes at least two PT100s, and the PT100 is fixed on the heat sink to perform over-temperature protection on the converter module when the table top of the heat sink overheats.

13. The converter module according to claim 12, characterized in that: The supporting capacitor is fixed on the epoxy cloth plate and the capacitor bracket, the epoxy cloth plate is fixed on the capacitor bracket, the capacitor bracket is installed on the column through a capacitor support, and the capacitor bracket and the capacitor support as well as the capacitor support and the column are fastened by screws.

14. The converter module according to claim 13, characterized in that: The second basic unit also includes a control layer support frame, which is installed on the capacitor support. The control unit and the DC / DC power supply module are fixed on the control layer support frame. The control layer support frame is also provided with a handle to facilitate the installation and disassembly of the module control layer.

15. The converter module according to claim 14, characterized in that: The column is provided with a column handle for facilitating the transportation of the converter module.

16. A converter, characterized in that: The invention comprises the converter module according to any one of claims 1 to 15.

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