Traction and auxiliary converter structure for 400 km / h electric multiple unit

Abstract

The present invention relates to the field of traction and auxiliary converter structures for high-speed electric multiple units. Disclosed is a traction and auxiliary converter structure for a 400 km / h electric multiple unit. The traction and auxiliary converter structure comprises a cabinet, wherein an input contactor unit, an output contactor unit and a TCU are sequentially provided on a left side inside the cabinet from top to bottom; a plurality of high-voltage input ports are provided in a left side of the input contactor unit; a plurality of groups of three-phase high-voltage output ports configured to be connected to an electric motor are provided in a left side of the output contactor unit; a grounding screw seat is provided at the bottom of an outer wall of a left side of the TCU; a power I module unit, a voltage and current sensor unit and a power II module unit are sequentially provided in the middle of the cabinet from top to bottom; and an electric-motor cooling unit, an auxiliary transformer and electric-motor side water pump unit, a fan unit, an auxiliary reactor and converter side water pump unit and a converter cooling unit are sequentially provided on a right side inside the cabinet from top to bottom. The present invention meets the requirements of the entire structure for miniaturization and light weight.

Description

Traction auxiliary converter structure for 400 km / h EMU

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202311791023.4 and application date of December 25, 2023, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present invention relates to the field of traction auxiliary converter structures for high-speed trains, and in particular to a traction auxiliary converter structure for trains with a speed of 400 kilometers per hour. Background Art

[0004] In order to achieve a higher commercial operating speed (400Km / H) for my country's high-speed rail and continue to consolidate my country's leading advantage in high-speed rail, it is necessary to further research and improve the next generation of high-efficiency permanent magnet traction transmission systems of new SiC devices and permanent magnet motors. A more miniaturized and lightweight traction auxiliary converter structure can be designed to achieve high-speed rail speed increase.

[0005] In the prior art, there are two types of traction-auxiliary converter structures. One is a separate structure, in which the traction and auxiliary converters are separated and implemented in two cabinets. However, this structure results in a relatively large combined size and weight of the traction and auxiliary converters in the vehicle's travel direction. The other is an integrated structure, in which the traction and auxiliary converters are integrated into a single structure. However, this structure has low power density, is heavy, has a large length in the vehicle's travel direction, and does not utilize a permanent magnet motor system or a water-cooled motor system.

[0006] Therefore, in order to solve the above problems, it is necessary to improve the existing traction auxiliary converter structure. Summary of the Invention

[0007] In order to solve the problem that the traction auxiliary converter needs to be miniaturized and lightweight, and that the system is expected to be applicable to permanent magnet motors and adopt a water-cooling method, the present invention provides a traction auxiliary converter structure for a 400 km / h EMU.

[0008] The present invention is achieved through the following technical solutions: a traction auxiliary converter structure for 400 km / h EMUs, comprising a rectangular cabinet. The cabinet interior is divided into multiple functional units. The left side of the cabinet interior is sequentially arranged from top to bottom: an input contactor unit, an output contactor unit, and a TCU control unit. The left side of the input contactor unit is provided with multiple high-voltage input ports for managing high-voltage input; the left side of the output contactor unit is provided with multiple sets of three-phase high-voltage output ports for connecting to the motor; the output contactor unit is provided with multiple sets of three-phase high-voltage output ports for connecting to the motor; the output contactor unit is provided with multiple sets of three-phase high-voltage output ports for managing high-voltage output. A grounding screw is provided at the bottom of the left outer wall of the TCU control unit to ground the entire cabinet. The middle portion of the cabinet is sequentially arranged from top to bottom: a power I module unit, a voltage and current sensor unit, and a power II module unit, which implement the main functions required within the cabinet. The right side of the cabinet interior is sequentially arranged from top to bottom: a motor cooling unit, an auxiliary transformer and motor-side water pump unit, a fan unit, an auxiliary reactor and converter-side water pump unit, and a converter cooling unit. These cooling units provide cooling for the entire traction auxiliary converter. The upper part of the motor cooling unit is the motor radiator air inlet, the lower part of the converter cooling unit is the converter radiator air inlet, and a plurality of auxiliary output ports are also provided on the right side of the fan unit. The outside of the auxiliary transformer and the motor side water pump unit is provided with a motor cooling water inlet pipe and a motor cooling water outlet pipe of the motor cooling unit; the outside of the auxiliary inductor and the converter side water pump unit is provided with a converter cooling water inlet pipe and a converter cooling water outlet pipe of the converter cooling unit, which are used for water inlet and outlet to cool the motor; a plurality of air outlets are provided on the back of the cabinet so that the wind entering the radiator is blown out outward.

[0009] Preferably, the upper portion of the input contactor unit is an input contactor maintenance space, and the lower portion of the TCU control unit is a TCU maintenance space for maintaining each module.

[0010] Preferably, the upper portion of the power I module unit is a power I module maintenance space, and the lower portion of the power II module unit is a power II module maintenance space, which are used by staff to maintain the power I module and the power II module respectively.

[0011] Preferably, the upper and lower parts of the cabinet are module maintenance spaces for staff to maintain each module.

[0012] Preferably, eight high-voltage input ports are provided on the left side of the input contactor unit; three groups of three-phase high-voltage output ports for connecting to the motor are provided on the left side of the output contactor unit; and six auxiliary output ports are also provided on the right side of the fan unit.

[0013] Preferably, six positioning and mounting plates are evenly distributed on the upper and lower edges of the front panel of the cabinet for installation and positioning in the vehicle.

[0014] Preferably, the cabinet body is provided with detachable movable door panels around its periphery, and the door panels are made of aluminum plates, which are light in weight and easy to disassemble.

[0015] Preferably, a maintenance bottom door is provided at the middle bottom of the cabinet.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the present invention provides a traction auxiliary converter structure for a 400 km / h EMU, and the traction auxiliary converter adopts a welded structure to ensure that the entire structure meets the impact and vibration requirements, and reasonably divides the structure, effectively reducing the weight and length of the cabinet, thereby achieving the miniaturization and lightweight requirements of the entire structure; meeting the requirements of the motor permanent magnet system and improving the working efficiency of the motor; meeting the water cooling requirements of the motor and reducing the failure rate of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a front view of the structure of the present invention;

[0018] FIG2 is a left side view of the structure of the present invention;

[0019] FIG3 is a right side view of the structure of the present invention;

[0020] FIG4 is a top view of the structure of the present invention;

[0021] FIG5 is a bottom view of the structure of the present invention;

[0022] FIG6 is a rear view of the cabinet of the present invention. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to specific embodiments.

[0024] A traction auxiliary converter structure for a 400 km / h motor vehicle, as shown in Figures 1 to 6: includes a cabinet H, which is a rectangular parallelepiped. The interior of the cabinet H is divided into multiple functional units. The left side of the interior of the cabinet H is sequentially provided with an input contactor unit 1, an output contactor unit 2 and a TCU control unit 3 from top to bottom. The left side of the input contactor unit 1 is provided with multiple high-voltage input ports 101, and the left side of the output contactor unit 2 is provided with multiple groups of three-phase high-voltage output ports 201 for connecting to the motor. A grounding screw seat 301 is provided at the bottom of the left outer wall of the TCU control unit 3; the middle part of the cabinet H is sequentially provided with a power I module unit 4, a voltage and current sensor unit 14 and a power II module unit 5 from top to bottom, and the right side of the interior of the cabinet H is sequentially provided with There are a motor cooling unit 6, an auxiliary transformer and motor-side water pump unit 7, a fan unit 8, an auxiliary inductor and converter-side water pump unit 9 and a converter cooling unit 10. The upper part of the motor cooling unit 6 is the motor radiator air inlet 601, and the lower part of the converter cooling unit 10 is the converter radiator air inlet 1001. A plurality of auxiliary output ports 801 are also provided on the right side of the fan unit 8. The outer side of the auxiliary transformer and motor-side water pump unit 7 is provided with a motor cooling water inlet pipe 602 and a motor cooling water outlet pipe 603 of the motor cooling unit 6; the outer side of the auxiliary inductor and converter-side water pump unit 9 is provided with a converter cooling water inlet pipe 1002 and a converter cooling water outlet pipe 1003 of the converter cooling unit 10; and a plurality of air outlets 13 are provided on the back of the cabinet H.

[0025] This embodiment adopts the following preferred solutions: the upper part of the input contactor unit 1 is the input contactor maintenance space 101, the lower part of the TCU control unit 3 is the TCU maintenance space 302, and the left side of the output contactor unit 2 is the output contactor maintenance space 202; the upper part of the power I module unit 4 is the power I module maintenance space 401, and the lower part of the power II module unit 5 is the power II module maintenance space 501; the upper and lower parts of the cabinet H are both module maintenance spaces 11; the left side of the input contactor unit 1 is provided with eight high The output contactor unit 2 is provided with three groups of three-phase high-voltage output ports 201 for connecting to the motor on the left side; the fan unit 8 is also provided with six auxiliary output ports 801 on the right side; six positioning mounting plates 12 are evenly distributed on the upper and lower edges of the front panel of the cabinet H; the dimensions of the cabinet H are: 4.06 meters long, 2.39 meters wide, and 0.702 meters high; the cabinet H is provided with removable movable door panels made of aluminum plates on all sides; a maintenance bottom door is provided at the middle bottom of the cabinet H; the cabinet H adopts a welded structure.

[0026] The specific operation of this embodiment is as follows: the entire cabinet H is installed at the corresponding position on the vehicle using the positioning mounting plate 12. After debugging, the various modules in the entire device can be used to perform their corresponding functions. The functions of each module are well known to those skilled in the art. The device in this embodiment has redesigned all high and low voltage interface positions, and also redesigned the motor water cooling interface position. The modules are clearly divided and easy to install, meeting the requirements of lightweight.

[0027] The scope of protection claimed by the present invention is not limited to the above specific embodiments. For those skilled in the art, the present invention may have various variations and modifications. Any modifications, improvements and equivalent substitutions made within the concept and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A traction auxiliary converter structure for a bullet train with a speed of 400 km / h, wherein, It includes a cabinet body. The cabinet body is in the shape of a cuboid. The interior of the cabinet body is divided into multiple functional units. Inside the cabinet body, an input contactor unit, an output contactor unit, and a TCU control unit are sequentially arranged from top to bottom on the left side. On the left side of the input contactor unit, multiple high-voltage input ports are provided. On the left side of the output contactor unit, multiple sets of three-phase high-voltage output ports for connecting motors are provided. At the bottom of the left outer wall of the TCU control unit, a grounding screw base is provided. In the middle of the cabinet body, a power module I unit, a voltage and current sensor unit, and a power module II unit are sequentially arranged from top to bottom. Inside the right side of the cabinet body, a motor cooling unit, an auxiliary transformer and a motor-side water pump unit, a fan unit, an auxiliary reactor and a converter-side water pump unit, and a converter cooling unit are sequentially arranged from top to bottom. The upper part of the motor cooling unit is the air inlet of the motor radiator. The lower part of the converter cooling unit is the air inlet of the converter radiator. On the right side of the fan unit, multiple auxiliary output ports are also provided. Outside the auxiliary transformer and the motor-side water pump unit, a motor cooling water inlet pipe and a motor cooling water outlet pipe of the motor cooling unit are provided. Outside the auxiliary reactor and the converter-side water pump unit, a converter cooling water inlet pipe and a converter cooling water outlet pipe of the converter cooling unit are provided. On the back of the cabinet body, multiple air outlets are provided.

2. The structure of a traction auxiliary converter for a 400-kilometer-per-hour EMU according to claim 1, wherein, The upper part of the input contactor unit is the input contactor maintenance space. The lower part of the TCU control unit is the TCU maintenance space. The left side of the output contactor unit is the output contactor maintenance space.

3. The structure of a traction auxiliary converter for a 400-kilometer-per-hour EMU according to claim 1, wherein, The upper part of the power module I unit is the power module I maintenance space. The lower part of the power module II unit is the power module II maintenance space.

4. A traction auxiliary converter structure for a 400-kilometer-per-hour bullet train according to claim 1, wherein, The upper and lower parts of the cabinet body are both module maintenance spaces.

5. The structure of a traction auxiliary converter for a 400-km / h EMU according to claim 1, wherein, On the left side of the input contactor unit, eight high-voltage input ports are provided. On the left side of the output contactor unit, three sets of three-phase high-voltage output ports for connecting motors are provided. On the right side of the fan unit, six auxiliary output ports are also provided.

6. The structure of a traction auxiliary converter for a 400-kilometer-per-hour bullet train according to claim 1, wherein, On the upper and lower edges of the front panel of the cabinet body, six positioning mounting plates are evenly distributed.

7. A traction auxiliary converter structure for a 400-km / h multiple unit, according to claim 1, wherein, The dimensions of the cabinet body are: length 4.06 meters, width 2.39 meters, and height 0.702 meters.

8. The structure of a traction auxiliary converter for a 400-kilometer-per-hour bullet train according to claim 1, wherein, Removable movable door panels are provided around the cabinet body, and aluminum plates are used.

9. The structure of a traction auxiliary converter for a 400-kilometer-per-hour bullet train according to claim 1, wherein, There is a maintenance bottom door at the middle bottom of the cabinet body.

10. A traction auxiliary converter structure for a 400-kilometer-per-hour EMU according to claim 1, wherein, The cabinet body adopts a welded structure.

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