High-integration converter device

Abstract

The invention discloses a high-integration converter device, which comprises two rectification modules positioned in a box body, two inversion modules, an auxiliary variable module, a battery charger module, an auxiliary depressurizing and filtering device and a traction control unit, wherein the rectification modules output direct-current voltage to a middle direct-current loop after being applied with voltage from a traction transformer; the middle direct-current loop is connected with two paths of main inversion loads and one path of auxiliary inversion load in parallel; the main inversion loads convert the direct current into the three-phase alternating current by the inversion modules; the three-phase alternating current is supplied to a motor; and the auxiliary variable module load is characterized in that power is supplied to auxiliary equipment out of the converter device and the battery charger module in the converter device via the auxiliary depressurizing and filtering device. The high-integration converter device disclosed by the invention has the advantages of simple and compact structure, low cost, high integration degree, convenience in installation and good reliability.

Description

technical field [0001] The invention mainly relates to the field of converters for motor trains, in particular to a highly integrated converter for trains. Background technique [0002] As the core component of the EMU, the converter device for the EMU is responsible for a series of conversions of the power grid energy to drive the traction motor and supply electric energy for the auxiliary equipment on the train. With the rapid development of rail transit, various electric locomotives or EMUs generally use high-power converter devices, such as insulated gate bipolar transistor (Insulate Gate Bipolar Transistor, IGBT) converter devices. It can be seen that the EMU converter device is developing in the direction of high power, complete regulation and control functions, high integration, and high output. [0003] At present, the main traction converters, auxiliary converters, chargers, etc. used in the field of rail transit are all built into separate cabinets. That is to sa...

AI Technical Summary

Problems solved by technology

[0007] It can be seen from the above that the design method of independent cabinets for main traction converters, auxiliary converters, chargers and water-cooling heat dissipation devices has the following main disadvantages: each device is cabineted separately, the number of cabinets increases, and the production cost increases. The group space layout is more difficult and takes up more EMU installation space, and the reliability of electrical and mechanical connections between various equipment is greatly reduced

Each device is built into a separate cabinet, and heat dissipation, control and other systems need to be considered separately for each device, and the consistent resources of each device have not been fully shared.

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