A universalized, integrated and modularized IGBT traction converter module

Abstract

The invention is a kind of generalized, integral and modular IGBT drawing converter model, which includes converting unit set in the drawer structure, a direct current supporting capacitance unit, gate driving circuit and control box, it has generalization, integration and modularity. The integration degree is high, the radiating mode is selectable, and the assembly and maintenance are convenient.

Description

technical field [0001] The invention belongs to a traction conversion device for rolling stock that converts alternating current into suitable direct current or converts direct current into suitable alternating current, especially a generalized, integrated and modularized IGBT traction device for rail rolling stock. converter module. technical background [0002] Due to the short period of use and development, IGBT converters generally still have many imperfections. As far as medium and high-power IGBT converters are concerned, the current situation of common use at home and abroad is: (1) Modular, general-purpose The degree of transformation is not high. There is no consideration of modularization and generalization, and the products are individually designed according to the dimensions provided by customers. Traction converters used in AC drives are generally divided into four-quadrant rectifiers and inverters. Because the circuit structure and control of the two are di...

AI Technical Summary

Problems solved by technology

(2) Difficulty increasing power

(3) Inconvenient installation and maintenance

Due to the lack of modularization and convenience considerations in the structural design of many converters, it brings great inconvenience to installation and maintenance. It is often necessary to dismantle many other components or components in order to maintain one component or component. , It also has a serious impact on the reliability of the system and the overall life, because every time it is disassembled, the reliability of the corresponding components must be reduced. For example, the number of insertions and removals of general connectors is regulated. Plugins will no longer be reliable

(4) The electrical performance is affected, and the potential of the device cannot be fully utilized

Due to the low degree of modularization and integration of general converters or the unreasonable layout of components, if low-inductance busbars are not used or related components are arranged too far away, the wiring inductance or line inductance will be too large, which will make the entire converter The electrical performance of the converter is affected, so that the full potential of the converter cannot be exploited

(5) The heat dissipation method is complicated, or the effect is not good

Of course, in some occasions where the heat dissipation requirement is particularly large, we can also add an air duct to the radiator for forced air cooling, but the heat dissipation capacity at this time is beyond the reach of ordinary forced air cooling

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