Filter and parameter design method thereof

A parameter design and filter technology, applied in the direction of digital technology network, impedance network, electrical components, etc., can solve the problems of voltage change rate and excessive peak voltage, etc., to reduce the peak voltage amplitude, reduce the impact, reduce the common The effect of the modulo voltage

Pending Publication Date: 2022-02-18
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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Problems solved by technology

[0005] In order to solve the problem that the voltage change rate and peak voltage of the traction converter using SiC power devices are too large, the present invention aims to propose a circuit structure of a filter, a SiC traction converter suitable for the filter, and the filter Parameter design method for power converter and SiC traction converter

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  • Filter and parameter design method thereof
  • Filter and parameter design method thereof

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[0040] The following description is presented to enable any person skilled in the art to make and use the invention and to integrate it into a specific application context. Various modifications, and various uses in different applications will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to a wider range of embodiments. Thus, the present invention is not limited to the embodiments set forth herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0041] In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the practice of the present invention may not necessarily be limited to these specific details. In other words, well-known structures and devices are shown in block diagram form without detail in ord...

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Abstract

The invention provides a filter, a SiC traction converter adopting the filter and a parameter design method and a device of the SiC traction converter. The filter comprises a common-mode filter circuit used for reducing common-mode interference current and common-mode voltage of a load end of the filter, and an input end of the common-mode filter circuit is an input end of the filter; a differential mode filter circuit is used for reducing the voltage change rate and the peak voltage amplitude of the load end of the filter, the input end of the differential mode filter circuit is connected with the output end of the common mode filter circuit, and the output end of the differential mode filter circuit is the output end of the filter. the output end of the filter is connected with a load through a connecting line.

Description

technical field [0001] The invention relates to a variable frequency drive system, in particular to a filter and a parameter design method thereof. Background technique [0002] With the market application of high-power SiC power devices, the traction drive system of rail transit with SiC as the core has been significantly improved in terms of power density and system efficiency, which will definitely become the trend of future development. [0003] Compared with traditional Si-based IGBT converters, the switching frequency and switching speed of SiC converters are significantly improved. On the one hand, the higher switching frequency and voltage change rate will make the traction drive system generate strong electromagnetic interference, and at the same time, it will generate a large voltage change rate (du / dt) and overvoltage at the traction motor end, which will not be enough for the insulation of the traction motor. The conditions posed great challenges and made the be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H17/06
CPCH03H17/06
Inventor 杨德勇支永健窦泽春朱柄全袁科亮范伟罗剑波万伟伟杨天矾闫光临吴浩高子凡
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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