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Conducted EMI Filter Design Based on the Noise Source Impedance in Single-phase Grid-connected Inverter
Received:April 18, 2018  Revised:May 14, 2018
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Keywords:Single-phase inverter  Noise source impedance  Common mode interference  Differential mode interference  EMI Filter
Fund Project:Project Supported by Natural Science Foundation of Guangdong – Doctor startup project (2017A030310317)
Jiangshiqi Shenzhen University jiangshiqi2017@email.szu.edu.cn
Liu Yitao Shenzhen University liuyt@szu.edu.cn
JinDianheng Shenzhen University jindianheng2016@email.szu.edu.cn
PanXuewei School of Mechanical Engineering and Automation Harbin Institute of Technology Shenzhen xwpan@hit.edu.cn
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      School of Mechanical Engineering and Automation, Harbin Institute of Technology (Shenzhen), Shenzhen 518000, Guangdong Province, China ) Abstract: Grid-connected inverter is a necessary part in Grid-connected system. With the development of semiconductor material, the switching frequency in the power converter becomes higher than before that would produce du/dt and di/dt. Through coupling with parasitic parameters among the system or between the system and ground, results in conducted common mode and differential mode electromagnetic interference (EMI). EMI filter design based on noise source impedance was analyzed and introduced in this paper. The simulation and experiments results verify the effectiveness of this method.