基于新能源逆变系统的直流侧电磁干扰噪声机理分析及其抑制技术  

Analysis and suppression of electromagnetic interference noise at DC side of new energy inverter system

作　　者：孙红艳[1] 刘勇[2] 赵阳[2] 张宇环[2] 颜伟[2] 

机构地区：[1]南京师范大学泰州学院,江苏泰州225300 [2]南京师范大学电气与自动化工程学院,江苏南京210042

出　　处：《电力自动化设备》2013年第11期64-68,80,共6页Electric Power Automation Equipment

基　　金：江苏省自然科学基金资助项目(BK2011789);江苏省教育厅高校科研成果产业化推进项目(JHB2011-20);江苏省研究生培养创新工程资助项目(CXZZ12_0404;CXLX12_0411)~~

摘　　要：针对新能源逆变系统的直流侧传导电磁干扰(EMI)噪声进行了综合分析,就其产生机理提出了直流侧传导电磁干扰噪声的共模干扰机理模型和差模干扰机理模型,在共模、差模噪声分析的理论基础上,详细分析了直流EMI滤波器的设计及其特性。采用MATLAB仿真对比分析了高频寄生参数的存在对DC_LISN受试端阻抗、隔离度、插入损耗等参数的影响。以某一风能逆变系统为实验对象,具体分析了该系统直流侧的传导干扰噪声特性,并设计了相应的直流EMI滤波器。实验结果很好地验证了采用所提方法设计的直流EMI滤波器的有效性。The conducted EMI（ElectroMagnetic Interference） noise at the DC side of new energy inverter system is comprehensively analyzed and its common-mode and differential-mode interference models are proposed based on its generation mechanism. The design of DC EMI filter and its characteristics are analyzed in detail. MATALB simulation is adopted to analyze the influence of high-frequency parasitic parameters on the EUT port impedance,isolation and insertion loss of DC_LISN. As an experiment,the characteristics of DC-side conducted EMI noise is analyzed for a wind inverter system and a corresponding DC EMI filter is designed to suppress its excessive EMI noise. Experimental results show the effectiveness of the designed DC EMI filter.

关 键 词：新能源逆变 直流 传导电磁干扰 MATLAB 仿真 高频寄生参数 滤波器 噪声 

分 类 号：TM464[电气工程—电器] TM937.4