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Current conversion module and main structure thereof

A main structure and inverter technology, applied in the direction of converting equipment structural components, converting AC power input to DC power output, and electrical equipment structural components, etc., can solve problems such as overvoltage and failure of switching devices, and reduce peak voltage. , The effect of reducing current harmonic content and stray inductance

Pending Publication Date: 2022-02-22
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Usually, in the corresponding power module of the main circuit of the conversion system, there will be a process of commutation between the corresponding switching device and the supporting capacitor; and in the commutation process, due to the stray inductance in the current path, the corresponding switching device will exist Risk of overvoltage or even failure

Method used

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  • Current conversion module and main structure thereof
  • Current conversion module and main structure thereof
  • Current conversion module and main structure thereof

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Embodiment Construction

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0052]In this application, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. an actual relationship or order. Moreover, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements incl...

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Abstract

The invention provides a current conversion module and a main structure thereof. A direct-current capacitor busbar comprises a busbar body, and a rectification side connecting end, an inversion side connecting end and a capacitor side connecting end which are arranged on the busbar body. The direct current side of a rectification assembly is connected with the busbar body through the rectification side connecting end, a supporting capacitor assembly is connected with the busbar body through the capacitor side connecting end, the direct current side of an inversion assembly is connected with the busbar body through the inversion side connecting end, and therefore the main structure of the current conversion module integrates the rectification function and the inversion function. Moreover, the inversion side connecting end and the rectification side connecting end are respectively arranged at the two sides of the capacitor side connecting end, i.e., the supporting capacitor assembly is arranged between the rectification assembly and the inversion assembly, so that the paths from the rectification assembly and the inversion assembly to the supporting capacitor assembly are as short as possible, the stray inductance in the main structure of the converter module is reduced, and the safety and the reliability of the main structure of the converter module are improved.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a converter module and its main structure. Background technique [0002] In a high-power AC drive electric locomotive or a high-speed EMU, the main power modules of the main circuit of its converter system include a four-quadrant power module and an inverter chopper power module. [0003] Usually, in the corresponding power module of the main circuit of the conversion system, there will be a process of commutation between the corresponding switching device and the supporting capacitor; and in the commutation process, due to the stray inductance in the current path, the corresponding switching device will exist Risk of overvoltage or even failure. [0004] Therefore, how to reduce the stray inductance in the main circuit of the converter system to ensure the safety and reliability of the main circuit of the converter system is an urgent problem to be solved. Contents ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/00H02M7/483H02M7/5387H05K7/20
CPCH02M7/003H02M7/483H02M7/5387H05K7/209
Inventor 黄南陈燕平窦泽春谢雄波杨见光邵强王嘉义蒋云富陈明翊胡长风杨乐乐
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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