Integrated remote sampling device suitable for high-power traction converter

Abstract

The application provides an integrated remote sampling device suitable for a high-power traction converter, comprising: a sampling control module, a current sensor sampling port, a voltage sensor sampling port, a temperature sensor sampling port, a sampling control board and a fiber signal transmission port, the sampling control board converts sampling signals into fiber signals, and the fiber signals are transmitted to a remote control unit through the fiber signal transmission port; a power module, a power input port, a power output port and a power board, the power board converts the voltage of an external DC power input through the power input port, and then transmits the converted voltage to external equipment through the power output port; and a box body, the sampling control module and the power module are assembled in the box body. The technical scheme of the application can solve the technical problem of distance limitation in the setting of a traction control unit and a traction power unit of a high-power traction converter in the prior art.

Description

Technical Field

[0001] This invention relates to the field of electric traction drive technology, and in particular to an integrated remote sampling device suitable for high-power traction converters. Background Technology

[0002] In the development of high-power traction converters, it is necessary to sample current, voltage, temperature, etc., to enable the traction control unit to complete closed-loop control. Filtering and power supply are required for various drives of the power module; alarm processing is also necessary for various low-level information. Currently, most high-power traction converters adopt a parallel cabinet arrangement of the control unit and the primary circuit of the traction converter, with sampling, power supply, filtering, and alarm functions all concentrated in the control chassis or cabinet. For example, the publicly available literature "Development of Train TCU Development Platform" (Instrument and Meter User, October 2014) discloses a traction control system for rail transit applications, which uses a PXI-6229 data acquisition card in an onboard chassis for signal acquisition. Due to the limited length of analog signal acquisition cables, the control chassis is placed near the traction converter. The parallel cabinet arrangement of the control unit and the primary circuit of the traction converter is usually accomplished by multiple sampling and power supply devices, resulting in relatively simple functionality. Furthermore, the sampled signals from each sensor are analog, which are susceptible to electromagnetic interference from high-power power electronic devices. Therefore, the analog transmission line distance must be as short as possible to keep the control unit and power unit close together. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0004] This invention provides an integrated remote sampling device suitable for high-power traction converters. The integrated remote sampling device includes: a sampling control module, comprising: a current sensor sampling port, a voltage sensor sampling port, a temperature sensor sampling port, a sampling control board, and an optical fiber signal transmission port. The current sensor sampling port, voltage sensor sampling port, temperature sensor sampling port, and optical fiber signal transmission port are respectively connected to the sampling control board. The sampling control board converts the sampling signals from the current sensor sampling port, voltage sensor sampling port, or temperature sensor sampling port into optical fiber signals, which are then transmitted to a remote control unit via the optical fiber signal transmission port. A power module, comprising: a power input port, a power output port, and a power board. The power input port and power output port are connected to the sampling control board, and the power board is connected to the sampling control board to provide power. The power board converts the voltage of the external DC power input from the power input port and transmits it to an external device via the power output port. A housing, in which the sampling control module and the power module are assembled.

[0005] Furthermore, the sampling control board includes a current sampling circuit, a voltage sampling circuit, a temperature sampling circuit, a first signal conditioning circuit, a digital signal processing circuit, a photoelectric conversion circuit, and an optical fiber signal transmission circuit. The current sensor sampling port, voltage sensor sampling port, and temperature sensor sampling port transmit their respective sampling signals to the corresponding sampling circuits. The signals processed by the sampling circuits are transmitted to the first signal conditioning circuit for isolation and amplification. The isolated and amplified analog signals are transmitted to the digital signal processing circuit, which converts the analog signals into digital signals. The digital signals are then converted into optical fiber signals by the photoelectric conversion circuit. The optical fiber signals are transmitted to the optical fiber signal transmission port via the optical fiber signal transmission circuit and then to the remote control unit.

[0006] Furthermore, the power board includes a first power conversion module, a second power conversion module, and a filtering module. The external DC power is converted by the first power conversion module and then filtered by the filtering module to become the first power. The first power is transmitted to the second power conversion module and the power output port. The second power conversion module converts the first power into the second power, and the second power is transmitted to the power output port.

[0007] Furthermore, the first power conversion module adopts a 110VDC / 24VDC power conversion circuit, the second power conversion module adopts a 24VDC / 5VDC power conversion circuit, and the filtering module adopts a 24VDC filtering module.

[0008] Furthermore, the integrated remote sampling device also includes a plug-in connector, through which the power board and the sampling control board are connected.

[0009] Furthermore, the integrated remote sampling device also includes multiple first fixing components, and the sampling control board is fixedly connected to the power board through the multiple first fixing components.

[0010] Furthermore, the box body is made of a highly conductive material.

[0011] Furthermore, the integrated remote sampling device also includes a conductive adhesive strip, the housing has a top plate, the inner side of the top plate has a groove, and the conductive adhesive strip is located in the groove.

[0012] Furthermore, the integrated remote sampling device also includes a thermally conductive rubber pad located between the power board and the housing.

[0013] Furthermore, the integrated remote sampling device also includes multiple second fixing components. The housing includes a base plate, and the power board is fixedly connected to the base plate of the housing through multiple second fixing components. Thermally conductive rubber pads are in contact with the power board and the base plate of the housing, respectively.

[0014] This invention provides an integrated remote sampling device suitable for high-power traction converters. This device integrates a sampling control module and a power supply module within a housing, enabling it to sample current, voltage, and temperature. It supplies power to various drives of the converter power module via power supply terminals and uses fiber optic transmission to avoid electromagnetic interference, achieving long-distance transmission. The integrated remote sampling device of this invention is compact, has a simple layout, and is easy to assemble. It separates high-voltage system sampling and control, eliminating the distance limitation between the traction control unit and the traction power unit, allowing for centralized management of the traction control unit. Compared with existing technologies, this invention solves the technical problem of distance limitations in the setup of the traction control unit and the traction power unit in high-power traction converters. Attached Figure Description

[0015] The accompanying drawings, which form part of this specification, are provided to further illustrate embodiments of the invention and, together with the textual description, explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0016] Figure 1 An exploded right front view of an integrated remote sampling device for high-power traction converters, provided according to a specific embodiment of the present invention, is shown.

[0017] Figure 2 An exploded left front view of an integrated remote sampling device for high-power traction converters, provided according to a specific embodiment of the present invention, is shown.

[0018] Figure 3 A schematic diagram of the assembly structure of an integrated remote sampling device suitable for high-power traction converters, according to a specific embodiment of the present invention, is shown.

[0019] Figure 4 A schematic diagram of a top plate structure according to a specific embodiment of the present invention is shown;

[0020] Figure 5 A schematic diagram of the signal flow of an integrated remote sampling device suitable for high-power traction converters, provided according to a specific embodiment of the present invention, is shown.

[0021] The above figures include the following reference numerals:

[0022] 10. Sampling control module; 11. Current sensor sampling port; 12. Voltage sensor sampling port; 13. Temperature sensor sampling port; 14. Sampling control board; 15. Fiber optic signal transmission port; 16. Software upgrade port; 17. Status indicator light; 20. Power module; 21. Power input port; 22. Power output port; 23. Power board; 231. First power conversion module; 232. Second power conversion module; 233. Filtering module; 30. Housing; 31. Top plate; 31a. Slot; 31b. First threaded hole; 32. Side plate; 32a. Second threaded hole; 41. First copper pillar; 42. Second copper pillar; 50. Plug connector; 60. Thermal conductive rubber pad. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0026] like Figures 1 to 3 As shown, according to a specific embodiment of the present invention, an integrated remote sampling device suitable for high-power traction converters is provided. This integrated remote sampling device for high-power traction converters includes: a sampling control module 10, which includes: a current sensor sampling port 11, a voltage sensor sampling port 12, a temperature sensor sampling port 13, a sampling control board 14, and an optical fiber signal transmission port 15. The current sensor sampling port 11, voltage sensor sampling port 12, temperature sensor sampling port 13, and optical fiber signal transmission port 15 are respectively connected to the sampling control board 14. The sampling control board 14 controls the sampling based on the current sensor sampling port 11, voltage sensor sampling port 12, temperature sensor sampling port 13, and optical fiber signal transmission port 15. The sampling signal from port 12 or temperature sensor sampling port 13 is converted into an optical fiber signal, which is transmitted to the remote control unit through optical fiber signal transmission port 15; power module 20 includes: power input port 21, power output port 22 and power board 23. Power input port 21 and power output port 22 are connected to sampling control board 14, and power board 23 is connected to sampling control board 14 to provide power to sampling control board 14; power board 23 converts the voltage of the external DC power input from power input port 21 and transmits it to external devices through power output port 22; housing 30, in which sampling control module 10 and power module 20 are assembled.

[0027] This configuration provides an integrated remote sampling device suitable for high-power traction converters. This device integrates the sampling control module 10 and the power supply module 20 within a housing 30, enabling it to sample current, voltage, and temperature. It supplies power to various drives of the converter power module via power supply terminals and uses fiber optic transmission to avoid electromagnetic interference, achieving long-distance transmission. The integrated remote sampling device of this invention is compact, has a simple layout, and is easy to assemble. It separates high-voltage system sampling and control, eliminating the distance limitation between the traction control unit and the traction power unit, allowing for centralized management of the traction control unit. Compared with existing technologies, this invention solves the technical problem of distance limitations in the setup of the traction control unit and the traction power unit in high-power traction converters.

[0028] In this invention, in order to enable the sampling control board 14 to convert the sampling signals acquired by each sensor sampling port into optical fiber signals, the sampling control board 14 can be configured to include a current sampling circuit, a voltage sampling circuit, a temperature sampling circuit, a first signal conditioning circuit, a digital signal processing circuit, a photoelectric conversion circuit, and an optical fiber signal transmission circuit. The current sensor sampling port 11, the voltage sensor sampling port 12, and the temperature sensor sampling port 13 respectively transmit their respective sampling signals to the corresponding sampling circuits. The signals processed by the sampling circuits are transmitted to the first signal conditioning circuit for isolation and amplification. The analog signals after isolation and amplification are transmitted to the digital signal processing circuit, which converts the analog signals into digital signals. The digital signals are converted into optical fiber signals by the photoelectric conversion circuit, and the optical fiber signals are transmitted to the optical fiber signal transmission port 15 via the optical fiber signal transmission circuit and then transmitted to the remote control unit.

[0029] In one specific embodiment of the present invention, the digital signal processing circuit employs an AD conversion module. The AD conversion module converts analog signals into digital signals for subsequent photoelectric conversion.

[0030] In this invention, in order to facilitate the software update and upgrade of the sampling control board 14, the configurable sampling control module 10 also includes a software upgrade port 16. The software upgrade port 16 is connected to the sampling control board 14. The sampling control board 14 also includes a second signal conditioning circuit. The software upgrade signal input to the software upgrade port 16 is isolated and configured by the second signal conditioning circuit and then transmitted to the digital signal processing circuit.

[0031] In this invention, to achieve voltage conversion of the external DC power input to the power supply input port 21 by the power supply board 23, the power supply board 23 can be configured to include a first power conversion module 231, a second power conversion module 232, and a filter module 233. The external DC power is converted by the first power conversion module 231 and then filtered by the filter module 233 to become a first power supply. The first power supply is then transmitted to the second power conversion module 232 and the power supply output port 22. The second power conversion module 232 converts the first power supply into a second power supply, which is then transmitted to the power supply output port 22. The first power conversion module 231 and the second power conversion module 232 can respectively obtain two types of power supplies: a first power supply and a second power supply. These two types of power supplies can be provided to external devices via the power supply output port 22 to meet the different power supply needs of different devices. Furthermore, the filter module 233 can further suppress conducted interference.

[0032] In a specific embodiment of the present invention, the first power conversion module 231 may employ a 110VDC / 24VDC power conversion circuit, the second power conversion module 232 may employ a 24VDC / 5VDC power conversion circuit, and the filter module 233 may employ a 24VDC filter module. External DC power is converted to 24V power by the 110VDC / 24VDC power conversion circuit. The 24V power is then processed by the 24VDC filter module and converted to 5V power by the 24VDC / 5VDC power conversion circuit. Both the 24V and 5V power supplies are then transmitted to external devices via the power output port 22.

[0033] In this invention, to ensure a stable connection between the power supply board 23 and the sampling control board 14, the configurable integrated remote sampling device further includes a mating connector 50, through which the power supply board 23 and the sampling control board 14 are connected. The mating connector 50 enables a stable mechanical connection between the power supply board 23 and the sampling control board 14, while also ensuring that the power supply board 23 provides a stable power supply to the sampling control board 14.

[0034] In a specific embodiment of the present invention, to further stabilize the connection between the power board 23 and the sampling control board 14, the configurable integrated remote sampling device further includes multiple first fixing components. The sampling control board 14 is fixedly connected to the power board 23 through the multiple first fixing components. The first fixing components can play an auxiliary limiting role in the fixed connection between the power board 23 and the sampling control board 14. In a specific embodiment of the present invention, the configurable integrated remote sampling device includes four first fixing components, which correspond to the four corners of the sampling control board 14 respectively. Each first fixing component includes a first copper pillar 41 and a screw. The first copper pillar 41 is fixedly connected to the power board 23 and the sampling control board 14 through the screw. The power board 23 and the sampling control board 14 are provided with internal threaded holes corresponding to the screws.

[0035] In this invention, the integrated remote sampling device provides various power supplies such as 110VDC, 24VDC, and 5VDC, as well as sampling signals such as current, voltage, and temperature. Since the remote sampling device of this invention is designed for high-power traction converter sampling, it differs significantly from traditional sampling methods in that it requires high-voltage isolation of the sampling signals, typically at the 3kV level. Through the separate board design of the sampling control board 14 and the power supply board 23, high-voltage isolation of the onboard isolation circuit can be achieved, reducing the impact of the high-voltage system on the low-voltage signal side.

[0036] In this invention, to improve the electromagnetic shielding effect of the integrated remote sampling device, the housing 30 can be made of a high-conductivity material. Good electromagnetic shielding can be achieved by ensuring proper grounding of the housing 30 and the device. As a specific embodiment of this invention, the housing 30 can be made of a high-conductivity aluminum alloy. The housing 30 is an all-metal casing, possessing excellent shielding performance and capable of reliable operation in complex electromagnetic environments.

[0037] In this invention, in order to further reduce electromagnetic interference, the configurable integrated remote sampling device also includes a conductive adhesive strip. The housing 30 has a top plate 31, and the inner side of the top plate 31 has a groove 31a, in which the conductive adhesive strip is located.

[0038] In a specific embodiment of the present invention, the integrated remote sampling device further includes multiple connectors. The top plate 31 has multiple first threaded holes 31b, and the housing 30 includes four side plates 32, each with multiple second threaded holes 32a. The multiple connectors correspond one-to-one with the multiple first threaded holes 31b and the multiple second threaded holes 32a, and the four side plates 32 are fixedly connected to the top plate 31 by the multiple connectors. In this embodiment, screws can be used as connectors.

[0039] In this invention, the integrated remote sampling device has a relatively concentrated layout, which significantly reduces its size but also generates heat. To improve the heat dissipation of the integrated remote sampling device, a thermally conductive rubber pad 60 can be configured, located between the power board 23 and the housing 30. The thermally conductive rubber pad 60 transfers heat from the power module 20 to the housing 30, where it is then rapidly dissipated. This avoids the reduction in electromagnetic shielding performance caused by ventilation or active cooling in complex electromagnetic environments.

[0040] In this invention, to further stabilize the positional relationship between the power board 23 and the thermally conductive rubber pad 60 and improve heat dissipation performance, the configurable integrated remote sampling device further includes multiple second fixing components. The housing 30 includes a base plate, and the power board 23 is fixedly connected to the base plate of the housing 30 through the multiple second fixing components. The thermally conductive rubber pad 60 contacts both the power board 23 and the base plate of the housing 30. Through the multiple second fixing components, the thermally conductive rubber pad 60 can be clamped and fixed between the power board 23 and the base plate of the housing 30, allowing the power board 23 to dissipate heat more quickly through the thermally conductive rubber pad 60 and the base plate of the housing 30.

[0041] As a specific embodiment of the present invention, the configurable integrated remote sampling device includes four second fixing components, which correspond to the four corners of the power board 23 respectively. Each second fixing component includes a second copper pillar 42 and a screw. The second copper pillar 42 is fixedly connected to the power board 23 and the bottom plate of the housing 30 by the screw. The power board 23 and the bottom plate of the housing 30 are provided with internal threaded holes corresponding to the screws.

[0042] In this invention, the sampling control module 10 may also be configured to include a status indicator light 17, which is connected to the sampling control board 14 and is used to indicate whether sampling is in progress.

[0043] This invention relates to an integrated remote sampling device for high-power traction converters. This highly integrated device possesses current, voltage, and temperature sampling capabilities and can supply power to various drives of the converter power module via power supply terminals. The remote sampling device features a simple structure, compact size, and tight layout; it is easy to assemble and can be easily fixed to the converter power unit after assembly. Furthermore, the remote sampling device can be directly plugged into connectors for current, voltage, and temperature sensors, supporting hot-swapping. The housing of the integrated remote sampling device is made of highly conductive aluminum alloy and has internal conductive rubber strips, providing excellent electromagnetic shielding.

[0044] According to another aspect of the present invention, an installation method for an integrated remote sampling device suitable for high-power traction converters is provided. The installation method specifically includes: placing a thermally conductive rubber pad 60 on the bottom plate of a housing 30; connecting a current sensor sampling port 11, a voltage sensor sampling port 12, a temperature sensor sampling port 13, an optical fiber signal transmission port 15, a power input port 21, and a power output port 22 to a power board 23; fixing the power board 23 to the bottom plate of the housing 30 via multiple second fixing components and clamping the thermally conductive rubber pad 60; fixing the sampling control board 14 to the power board 23 via a plug-in connector 50 and multiple first fixing components; and connecting the four side plates of the housing 30 to the cover plate and the bottom plate via multiple connectors.

[0045] The integrated remote sampling device of the present invention has a simple installation method and a compact layout. The assembled integrated remote sampling device can be easily fixed on the converter power unit.

[0046] In summary, this invention provides an integrated remote sampling device suitable for high-power traction converters. This device integrates the sampling control module and power supply module within a housing, enabling it to sample current, voltage, and temperature. It supplies power to various drives of the converter power module via power supply terminals and utilizes fiber optic transmission to avoid electromagnetic interference, achieving long-distance transmission. The integrated remote sampling device of this invention is compact, has a simple layout, and is easy to assemble. It separates high-voltage system sampling and control, eliminating the distance limitation between the traction control unit and the traction power unit, allowing for centralized management of the traction control unit. Compared with existing technologies, the technical solution of this invention solves the technical problem of distance limitations in the setup of the traction control unit and the traction power unit in high-power traction converters.

[0047] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0048] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An integrated remote sampling device suitable for high-power traction converters, characterized in that, The integrated remote sampling device suitable for high-power traction converters includes: The sampling control module (10) includes: a current sensor sampling port (11), a voltage sensor sampling port (12), a temperature sensor sampling port (13), a sampling control board (14), and an optical fiber signal transmission port (15). The current sensor sampling port (11), the voltage sensor sampling port (12), the temperature sensor sampling port (13), and the optical fiber signal transmission port (15) are respectively connected to the sampling control board (14). The sampling control board (14) converts the sampling signals from the current sensor sampling port (11), the voltage sensor sampling port (12), or the temperature sensor sampling port (13) into optical fiber signals. The optical fiber signals are transmitted to the remote control unit through the optical fiber signal transmission port (15). The power module (20) includes a power input port (21), a power output port (22), and a power board (23). The power input port (21) and the power output port (22) are connected to the sampling control board (14). The power board (23) is connected to the sampling control board (14) to provide power to the sampling control board (14). The power board (23) converts the voltage of the external DC power input from the power input port (21) and transmits it to the external device through the power output port (22). The sampling control board (14) and the power board (23) are designed as separate boards to provide high-voltage isolation for the onboard isolation circuit and reduce the impact of the high-voltage system on the low-voltage signal side. The sampling control module (10) and the power module (20) are assembled inside the housing (30); The integrated remote sampling device also includes a plug-in connector (50), through which the power board (23) and the sampling control board (14) are connected.

2. The integrated remote sampling device for high-power traction converters according to claim 1, characterized in that, The sampling control board (14) includes a current sampling circuit, a voltage sampling circuit, a temperature sampling circuit, a first signal conditioning circuit, a digital signal processing circuit, a photoelectric conversion circuit, and an optical fiber signal transmission circuit. The current sensor sampling port (11), the voltage sensor sampling port (12), and the temperature sensor sampling port (13) respectively transmit their respective sampling signals to the corresponding sampling circuits. The signals processed by the sampling circuits are transmitted to the first signal conditioning circuit for isolation and amplification. The analog signals after isolation and amplification are transmitted to the digital signal processing circuit. The digital signal processing circuit converts the analog signals into digital signals. The digital signals are converted into optical fiber signals by the photoelectric conversion circuit. The optical fiber signals are transmitted to the optical fiber signal transmission port (15) via the optical fiber signal transmission circuit and then to the remote control unit.

3. The integrated remote sampling device for high-power traction converters according to claim 1 or 2, characterized in that, The power board (23) includes a first power conversion module (231), a second power conversion module (232), and a filter module (233). The external DC power is converted by the first power conversion module (231) and then filtered by the filter module (233) to become the first power. The first power is transmitted to the second power conversion module (232) and the power output port (22). The second power conversion module (232) converts the first power into the second power, and the second power is transmitted to the power output port (22).

4. The integrated remote sampling device for high-power traction converters according to claim 3, characterized in that, The first power conversion module (231) adopts a 110VDC / 24VDC power conversion circuit, the second power conversion module (232) adopts a 24VDC / 5VDC power conversion circuit, and the filter module (233) adopts a 24VDC filter module.

5. The integrated remote sampling device for high-power traction converters according to claim 1, characterized in that, The integrated remote sampling device also includes multiple first fixing components, and the sampling control board (14) is fixedly connected to the power board (23) through multiple first fixing components.

6. The integrated remote sampling device for high-power traction converters according to claim 1, characterized in that, The box body (30) is made of a high conductivity material.

7. The integrated remote sampling device for high-power traction converters according to claim 1, characterized in that, The integrated remote sampling device also includes a conductive adhesive strip. The box (30) has a top plate (31), and the inner side of the top plate (31) has a groove (31a). The conductive adhesive strip is located in the groove (31a).

8. The integrated remote sampling device for high-power traction converters according to claim 1, characterized in that, The integrated remote sampling device also includes a thermally conductive rubber pad (60), which is located between the power board (23) and the housing (30).

9. The integrated remote sampling device for high-power traction converters according to claim 8, characterized in that, The integrated remote sampling device also includes multiple second fixing components. The housing (30) includes a base plate. The power board (23) is fixedly connected to the base plate of the housing (30) through multiple second fixing components. The thermally conductive rubber pad (60) is in contact with the power board (23) and the base plate of the housing (30) respectively.

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