DESIGN OF EMI FILTER BASED ON NOISE SOURCE IMPEDANCE EXTRACTION OF PHOTOVOLTAIC INVERTER

被引：0

作者：

Wang, Haining ^{[1
]}

LiMingjie ^{[1
]}

Su, Jianhui ^{[1
]}

Zhang, Peng ^{[1
]}

Zhang, Jian ^{[1
]}

机构：

[1] Engineering Research Center of Photovoltaic System Ministry of Education, Hefei University of Technology, Hefei

来源：

Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2025年 / 46卷 / 05期

关键词：

electromagnetic compatibility; EMI filter; insertion loss; inverters; noise abatement; norse source impedance;

D O I：

10.19912/j.0254-0096.tynxb.2024-0145

中图分类号：

学科分类号：

摘要：

An efficient design method of EMI filter based on the extracted noise source impedance extraction for photovoltaic inverter is proposed. A two-port network equivalent model of the EMI filter is established and the influence of noise source impedance on the insertion loss of the filter is analyzed. The boundary of common mode/differential mode noise source impedance of the photovoltaic inverter is obtained by the single inductance/single capacitance insertion loss method,and the design equations of EMI filter parameters on both AC side and DC side of the photovoltaic inverter are given by turning frequency. Finally,the noise source impedance of the 20 kW photovoltaic inverter is extracted and incorporated into the designed EMI filter. The insertion loss is simulated and measured, which verifies that the designed EMI filter can effectively suppress noise interference, thereby significantly improving the electromagnetic compatibility of the system. © 2025 Science Press. All rights reserved.

引用

页码：345 / 354

页数：9

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