Auxiliary converter device and railway vehicle

Abstract

The invention provides an auxiliary converter device and a railway vehicle. The auxiliary converter device comprises a box body; the box body is internally provided with an inverter partition plate and a charger partition plate which are vertically arranged along the length direction of the box body; the box body is divided into an inverter chamber, a middle chamber and a charger chamber; a heat dissipation fan and a transformer are arranged in the middle chamber, an inverter module is arranged above the inverter chamber, a charger module is arranged above the charger chamber, and the inverter module and the charger module are oppositely arranged on the two sides of the heat dissipation fan; and the heat dissipation fan is used for conveying forced wind to the inverter module and the charger module to realize heat dissipation. The auxiliary converter device is compact in structure and high in integration level; the device is divided into three chambers according to functions and voltage grades, each chamber is modularly designed, and the assembly efficiency is effectively improved; and a forced air cooling heat dissipation structure is adopted, a heat dissipation air channel is short, air inlet is uniform, and the heat dissipation effect, safety and stability are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of rail vehicle converter devices, and in particular relates to an auxiliary converter device, a control method thereof, and a locomotive. Background technique [0002] The existing subway auxiliary converters are mainly divided into natural cooling and forced air cooling according to the cooling method. The natural cooling inverter module heat pipe is huge, and requires the cooperation of more than three people to disassemble and install, which has hidden dangers in construction safety; Compared with the natural cooling type, the transformer is relatively small in weight and volume, so it is widely used. The existing forced air-cooled auxiliary converter products have the following disadvantages: [0003] 1. The air duct design is unreasonable, the air duct in the box is not easy to clean, the air duct is long, and the wind resistance is large, and it is easy to cause the cooling effect of each module and ...

AI Technical Summary

Problems solved by technology

[0003] 1. The design of the air duct is unreasonable, the air duct in the box is not easy to clean and the air duct is long, the air resistance is large, and it is easy to cause the heat dissipation effect of each module and device in the box to deteriorate, which in turn affects its life and reliability;

[0004] 2. The unreasonable layout of the various components in the box leads to a large space occupation, a high height of the box, and a large volume and weight, which is not conducive to the installation and disassembly of the auxiliary converter device at the bottom of the train. At the same time, the center of gravity of the box is relatively different from the geometric center Far, seriously affecting the stability of the cabinet;

[0005] 3. Various electrical components such as power modules, transformers, reactors, and control modules are installed in the box, as well as busbars and cables used to connect various electronic components. The disassembly and maintenance lines are complicated, which makes maintenance costs high. And disassembly and maintenance need to enter the bottom of the vehicle, which is not conducive to the maintenance work;

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