Traction converter device

Abstract

The utility model discloses a traction converter device. A first chamber and a second chamber which are separated and arranged in the horizontal direction are formed in a cabinet body of the traction converter device; a magnetic element and an air supply assembly used for conducting air cooling on the magnetic element are arranged in the first cavity. An auxiliary charging integrated module is arranged in the second cavity; the auxiliary charging integrated module and the magnetic element are close to each other and are electrically connected. According to the traction converter device provided by the utility model, the auxiliary inverter module and the charger module are integrated into the auxiliary charging integrated module, so that the integration level of the whole device is improved, and miniaturization and light weight are facilitated; the internal space of the cabinet body is reasonably arranged, so that the heat dissipation requirement of the magnetic element is met, the complexity of the air duct structure design is reduced, and the space utilization rate of the cabinet body can be improved; the auxiliary charging integrated module and the magnetic element are close to each other in position, so that the wiring path of a conductive circuit between the auxiliary charging integrated module and the magnetic element is shortened.

Description

Technical Field

[0001] This utility model relates to the field of intercity and urban rail transit technology, and in particular to a traction converter device. Background Technology

[0002] Existing intercity and urban rail traction converters require an additional charger module. Furthermore, the magnetic components are small in size and numerous, resulting in a complex cooling duct structure.

[0003] The present invention aims to improve the cabinet integration of traction converters, to rationalize the layout of the traction converter cabinet, to improve the space utilization of the cabinet, and to make the converter smaller and lighter. Utility Model Content

[0004] This utility model provides a traction converter device to improve the cabinet integration of the traction converter device, to rationalize the layout of the cabinet, and to improve the space utilization of the cabinet.

[0005] This utility model provides a traction converter, wherein a first chamber and a second chamber are formed in the cabinet of the traction converter and are arranged in a horizontal direction.

[0006] The first chamber is equipped with magnetic elements and an air supply assembly for air cooling the magnetic elements;

[0007] The second chamber is equipped with an auxiliary charging module, which integrates an auxiliary inverter module and a charger module.

[0008] The auxiliary charging module is located close to the magnetic element and the two are electrically connected.

[0009] In one implementation, the second chamber is divided into a first sub-chamber and a second sub-chamber in the left-right direction, and the auxiliary charging module and the rectifier module are installed in the first sub-chamber and the second sub-chamber respectively.

[0010] The first sub-chamber is adjacent to the first chamber.

[0011] In one implementation, the first sub-chamber is separated from the first chamber by a partition plate, and the auxiliary charging module and the magnetic element are respectively disposed on opposite sides of the partition plate.

[0012] In one implementation, the second chamber is divided into a second sub-chamber and a third sub-chamber in the front-back direction;

[0013] An inverter module is installed in the third sub-chamber.

[0014] In one embodiment, the second chamber is oriented horizontally... shape;

[0015] The first chamber is square in the horizontal direction and is located inside the second chamber.

[0016] In one embodiment, a cooling pipeline is provided in the second chamber, the cooling pipeline including multiple branch pipelines, the positions of the branch pipelines corresponding to the positions of the auxiliary charging module, the rectifier module and the inverter module.

[0017] In one embodiment, the air supply assembly includes an air supply channel having an air inlet and an air outlet, and a fan disposed within the air supply channel;

[0018] The magnetic element is located in the air supply duct, and the fan is configured to drive the cold airflow into the air supply duct through the air inlet. After the cold airflow flows through the magnetic element and exchanges heat with the magnetic element, it drives the hot airflow out through the air outlet.

[0019] In one embodiment, the air supply channel is defined by a baffle plate disposed in the first chamber.

[0020] In one embodiment, the air inlet is located on the side wall of the cabinet; the air outlet is located below the magnetic element.

[0021] In one implementation, the magnetic element includes a transformer and a reactor.

[0022] Compared with the prior art, the advantages of this utility model are:

[0023] The traction converter in this embodiment integrates the auxiliary inverter module and the charger module into an integrated auxiliary-charger module, which improves the overall integration of the device and is beneficial for miniaturization and weight reduction.

[0024] Secondly, this embodiment also makes a reasonable layout of the internal space of the cabinet, and sets the magnetic components in the first chamber for separate air cooling of the magnetic components. While meeting the heat dissipation requirements of the magnetic components, it helps to reduce the complexity of the air duct structure design and improve the space utilization of the cabinet.

[0025] In addition, the proximity of the auxiliary charging module and the magnetic components helps to shorten the trace path of the conductive lines between them and reduce the impact of stray inductance in the lines. Attached Figure Description

[0026] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the internal structure of the traction converter;

[0028] Figure 2 This is a schematic diagram of the internal layout of the traction converter from a top-down perspective;

[0029] Figure 3 This is the circuit topology diagram of the traction converter.

[0030] Figure label:

[0031] 1. Cabinet body; 11. First chamber; 12. Second chamber; 121. First sub-chamber; 122. Second sub-chamber; 123. Third sub-chamber; 13. Partition;

[0032] 2. Magnetic components; 21. High-frequency transformers; 22. DC / DC reactors; 23. Filter reactors;

[0033] 3. Auxiliary charging integrated module;

[0034] 4. Rectifier module; 5. Inverter module;

[0035] 6. Air supply assembly; 61. Fan; 62. Air inlet; 63. Baffle plate;

[0036] 7. Main contactor. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings.

[0038] This utility model provides a traction converter device, in which a first chamber 11 and a second chamber 12 are formed in the cabinet 1, which are arranged in a horizontal direction. The first chamber 11 is provided with a magnetic element 2 and an air supply assembly 6 for air cooling the magnetic element 2. The second chamber 12 is provided with an auxiliary charging module 3, which is integrated with an auxiliary inverter module and a charger module. The auxiliary charging module 3 is located close to the magnetic element 2 and the two are electrically connected.

[0039] The traction converter in this embodiment integrates the auxiliary inverter module and the charger module into an auxiliary-charger integrated module 3, which improves the overall integration of the device and is beneficial for miniaturization and weight reduction.

[0040] Secondly, this embodiment also makes a reasonable layout of the internal space of the cabinet 1, and sets the magnetic element 2 in the first chamber 11 to cool the magnetic element 2 separately by air. While meeting the heat dissipation requirements of the magnetic element 2, it is beneficial to reduce the complexity of the air duct structure design and also reduce the space occupied by the cabinet.

[0041] In addition, the auxiliary charging module 3 and the magnetic element 2 are located close to each other, which helps to shorten the wiring path of the conductive lines between them and reduce the influence of stray inductance in the lines.

[0042] The second chamber 12 is equipped with an auxiliary charging module 3, a rectifier module 4, and an inverter module 5. Preferably, the rectifier module can be a four-quadrant module.

[0043] The second chamber 12 is divided in the left-right direction into a first sub-chamber 121 for installing the auxiliary charging module 3 and a second sub-chamber 122 for installing the rectifier module 4.

[0044] The first sub-chamber 121 is adjacent to the first chamber 11, and the auxiliary charging module 3 is installed inside the first sub-chamber 121. Specifically, the auxiliary charging module 3 is fixedly installed on the left and right sides, and wiring terminals are provided on the upper and lower sides of the auxiliary charging module 3 for connecting power cables.

[0045] The first sub-chamber 121 and the first chamber 11 are separated by a partition plate 13. The auxiliary filling module 3 and the magnetic element 2 are respectively disposed on opposite sides of the partition plate 13.

[0046] The auxiliary charging module 3 and the magnetic element 2 are close to each other and separated by a partition plate 13. The conductive lines on the auxiliary charging module 3 pass through the partition plate 13 into the first chamber 11 and connect to the magnetic element 2. The auxiliary charging module 3 and the magnetic element 2 are separated by only one plate, which helps to shorten the routing path of the conductive lines between them, reduce stray inductance, and improve the EMC performance (i.e., electromagnetic compatibility) of the traction converter.

[0047] In one implementation, the second chamber 12 is divided into a second sub-chamber 122 and a third sub-chamber 123 in the front-back direction; the inverter module 5 is installed in the third sub-chamber 123.

[0048] In this embodiment, by rationally arranging the interior of the traction converter cabinet 1, the space utilization rate of the cabinet 1 can be improved.

[0049] The second chamber 12 is horizontally oriented The first chamber 11 is square in the horizontal direction and is located inside the second chamber 12.

[0050] In one implementation, a cooling pipeline is provided in the second chamber 12. The cooling pipeline includes multiple branch pipelines, and the positions of the branch pipelines correspond to the positions of the auxiliary charging module 3, the rectifier module 4, and the inverter module 5.

[0051] The cooling pipeline is connected to the rectifier module 4, the inverter module 5, and the auxiliary charging module 3 through multiple branch pipelines for liquid cooling.

[0052] In this embodiment, the cabinet 1 is divided into a first chamber 11 and a second chamber 12. The first chamber 11 is provided with an air supply assembly 6 to provide air cooling for the magnetic components 2 inside the first chamber 11. The second chamber 12 is provided with a cooling pipeline to provide liquid cooling for the auxiliary charging module 3, the rectifier module 4 and the inverter module 5 installed in the second chamber 12.

[0053] In this embodiment, the magnetic element 2 includes a transformer and a reactor. The magnetic element 2 in this embodiment is a high-frequency auxiliary transformer magnetic element 2, the transformer is a high-frequency transformer 21, and the reactor includes a DC / DC reactor 22 and a filter reactor 23. This embodiment adopts a high-frequency auxiliary transformer scheme, that is, high switching frequency control, which can improve the dynamic performance of the system, reduce the weight of the magnetic element 2 in the auxiliary transformer system, and improve the output efficiency of the auxiliary transformer.

[0054] In one embodiment, the air supply assembly 6 includes an air supply channel having an air inlet 62 and an air outlet, and a fan 61 disposed in the air supply channel; the magnetic element 2 is located in the air supply channel, and the fan 61 is configured to drive the cold airflow through the air inlet 62 into the air supply channel, and after the cold airflow flows through the magnetic element 2 and exchanges heat with the magnetic element 2, it drives the hot airflow out from the air outlet.

[0055] The air inlet 62 is located on the side wall of the cabinet 1; the air outlet is located below the magnetic element 2. The air supply channel is defined by the baffle 63 located in the first chamber 11.

[0056] In this embodiment, the cold air enters through the air inlet 62 on the side wall of the cabinet 1, and after flowing through and cooling the magnetic element 2, it flows out through the air outlet below the magnetic element 2. Since there are many high-frequency electromagnetic elements and each element is small in size, the air supply channel is formed by setting the baffle plate 63 to ensure the ventilation performance in the first chamber 11, thereby meeting the heat dissipation requirements of the magnetic element 2.

[0057] The electrical connection methods of the electrical components in the traction converter device of this utility model embodiment are as follows:

[0058] The auxiliary charging module 3 and the inverter module 5 are electrically connected to the rectifier module 4, respectively.

[0059] Under traction conditions, the single-phase power grid voltage AC970V is rectified into 1800V DC voltage by rectifier module 4, and then inverted into frequency-modulated and voltage-regulated (VVVF voltage with adjustable voltage and frequency) by inverter module 5. The output can drive the traction motor. At the same time, the 1800V DC voltage rectified by rectifier module 4 serves as an intermediate DC circuit to provide power to auxiliary charging module 3. After processing by auxiliary charging module 3 and high-frequency magnetic component 2, the output is DC110V and AC380V / 50Hz, which power the DC load of the charger and the auxiliary load of the train.

[0060] In electric braking mode, the traction motor turns into a generator. The three-phase power generated by the motor is rectified into intermediate DC power by inverter module 5. Part of the DC power is used to support the normal operation of the auxiliary system, and part of it is fed back to the train pantograph and catenary.

[0061] In this embodiment, the traction converter also has a main control unit installed in its cabinet 1.

[0062] The main control unit is electrically connected to the rectifier module 4, inverter module 5, auxiliary charging module 3, and train communication equipment. The main control unit is responsible for receiving driver instructions and controlling the electrical components in the traction converter cabinet 1 in real time. It also has complete fault protection functions, module-level fault self-diagnosis functions, and self-reset functions for minor faults.

[0063] The control cable panel of the main control unit faces the side of cabinet 1 to facilitate module testing and maintenance.

[0064] The main contactor 7 is installed on the side of the traction converter cabinet, which provides overload protection, short circuit protection, undervoltage protection, overvoltage protection, temperature protection, and controls the working status of the electrical components inside the cabinet.

[0065] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A traction converter, characterized in that, The cabinet contains a first chamber and a second chamber that are horizontally separated. The first chamber is equipped with magnetic elements and an air supply assembly for air cooling the magnetic elements; The second chamber is equipped with an auxiliary charging module, which integrates an auxiliary inverter module and a charger module. The auxiliary charging module is located close to the magnetic element and the two are electrically connected.

2. The traction converter according to claim 1, characterized in that, The second chamber is divided into a first sub-chamber and a second sub-chamber in the left-right direction, and the auxiliary charging module and the rectifier module are installed in the first sub-chamber and the second sub-chamber respectively. The first sub-chamber is adjacent to the first chamber.

3. The traction converter according to claim 2, characterized in that, The first sub-chamber is separated from the first chamber by a partition plate, and the auxiliary charging module and the magnetic element are respectively disposed on opposite sides of the partition plate.

4. The traction converter according to claim 2 or 3, characterized in that, The second chamber is divided into a second sub-chamber and a third sub-chamber in the front-back direction; An inverter module is installed in the third sub-chamber.

5. The traction converter according to claim 4, characterized in that, The second chamber is oriented in the horizontal direction shape; The first chamber is square in the horizontal direction and is located inside the second chamber.

6. The traction converter according to claim 4, characterized in that, The second chamber is equipped with a cooling pipeline, which includes multiple branch pipelines. The positions of the branch pipelines correspond to the positions of the auxiliary charging module, the rectifier module, and the inverter module.

7. The traction converter according to claim 1, characterized in that, The air supply assembly includes an air supply channel with an air inlet and an air outlet, and a fan disposed within the air supply channel. The magnetic element is located in the air supply duct, and the fan is configured to drive the cold airflow into the air supply duct through the air inlet. After the cold airflow flows through the magnetic element and exchanges heat with the magnetic element, it drives the hot airflow out through the air outlet.

8. The traction converter according to claim 7, characterized in that, The air supply channel is defined by a baffle plate disposed in the first chamber.

9. The traction converter according to claim 7 or 8, characterized in that, The air inlet is located on the side wall of the cabinet; the air outlet is located below the magnetic element.

10. The traction converter according to claim 1, characterized in that, The magnetic components include transformers and reactors.

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