中国电机工程学报2012，Vol.32Issue(30)：156-162,7.
复杂电子系统传导EMI噪声机理分析与处理
Investigation and Reduction on Conducted Electromagnetic Interference Noise Mechanism for Complex Power Electronics Systems
摘要
Abstract
In order to analyze conducted EMI noise generated by complex power electronics systems, three theoretical models and its equivalent circuits were proposed by utilizing the electric dipole model, the circuit analysis method and the scattering parameter method, including cross talk mechanism, not-well grounding mechanism and PCB cable impedance mismatch mechanism. Furthermore, the cross talk choke was designed to suppress conducted EMI noise generated by cross talk. The experiment results show a vehicle GPS and RFID card reader system can pass the GB 9254 standard by employing the suggested approaches of this paper and its noise decreased 44.8 and 29.28 dBμV, respectively, so the validity of the approaches was verified.关键词
电子系统/传导电磁干扰噪声/串扰/接地不良/阻抗失配/噪声抑制Key words
electronics system/ conducted electromagnetic interference (EMI) noise/ cross talk/ not-well grounding/impedance mismatch/ noise reduction分类
信息技术与安全科学引用本文复制引用
颜伟,赵阳,王恩荣,张宇环,邱晓晖,孙红艳,陈雪丽..复杂电子系统传导EMI噪声机理分析与处理[J].中国电机工程学报,2012,32(30):156-162,7.基金项目
国家自然科学基金项目(51075215) （51075215）
江苏省自然科学基金(BK2011789) （BK2011789）
毫米波国家重点实验室开放基金(K201106) （K201106）
江苏省教育厅高校科研成果产业化推进项目(JHB2011-20). （JHB2011-20）
