Electromagnetic interference filter design based on terminal model of inverter

被引：0
|
作者：
Zhou T.-X. [1 ]
Zheng X.-Y. [1 ]
Ye S.-Z. [1 ]
Chen H.-L. [1 ]
机构：
[1] College of Electrical Engineering, Zhejiang University, Hangzhou
来源：
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2021年 / 55卷 / 11期
关键词：
Electromagnetic interference (EMI); EMI filter design; Inverter; Noise source impedance; Resonance suppression;
D O I：
10.3785/j.issn.1008-973X.2021.11.023
中图分类号：
学科分类号：
摘要：
The noise source impedance of inverter has a great influence on the filtering effect of electromagnetic interference (EMI) filter, and it is necessary to extract and analyze the noise source impedance of inverter when designing the filter. A passive EMI filter design method based on terminal model of inverter was studied. A terminal EMI model of inverter was established. By measuring terminal voltage as well as terminal current of inverter and using optimized algorithm, the equivalent noise source and the equivalent source impedance of inverter were extracted. Considering the noise source impedance, the load impedance and the high-frequency characteristics of filter components, optimization algorithm was used to calculate the component parameters of filter, so as to realize the quantitative design of EMI filter. For the problem that common-mode EMI at some frequency points exceeded limit after connecting the filter, the cause of resonance was analyzed, and a damping circuit design method was proposed. Connecting the designed EMI filter for experiment, EMI of the inverter output lines met the standard, which validated the proposed EMI filter design method. © 2021, Zhejiang University Press. All right reserved.
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页码：2215 / 2224
页数：9
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