基于“一致性”原则的“场-多导体”传输线辐射敏感度测试的等效理论及实现  

Equivalent Theory and Its Realization of the Radiated Immunity Test with Incident Field Excitation Coupling to Multi-Conductor Transmission Lines Based on the Consistency

作　　者：高欣欣[1] 王世山[1] 娄千层 颜伟[2] 张洪霞 Gao Xinxin;Wang Shishan;Lou Qianceng;Yan Wei(Jiangsu Key Laboratory of New Energy Generation and Power Conversion Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;School of Electrical and Automation Engineering Nanjing Normal University,Nanjing 210042,China)

机构地区：[1]南京航空航天大学江苏省新能源发电与电能变换重点实验室,南京211106 [2]南京师范大学电气与自动化工程学院,南京210042 [3]不详

出　　处：《电工技术学报》2018年第7期1588-1598,共11页Transactions of China Electrotechnical Society

基　　金：航空基金(20142552023)、江苏省自然基金(BK20171414)、研究生创新基地(实验室)开放基金(kfjj20160308)及中央高校基本科研业务费专项资金资助项目。

摘　　要：电缆是辐射干扰的一个主要来源,也是电磁耦合的接收器。随着电磁环境的日趋复杂,电缆的辐射敏感度测试已是研究电磁兼容的重点之一,但其传统的测试方法成本较高。为了节省成本且不失测试的有效性,提出一种等效测试方法,即"场-多导体"传输线耦合(FCL)模型和双端口激励下的传输线(ETP)模型之间的等效。基于多导体传输线理论,外施电磁场对传输线的影响可等效为无外施场的情况下外加一根两端接有一定幅值和相位的信号源的干扰线对传输线的响应;基于这一理论对其建模并仿真,证明两模型的等效性。由此,分别在电波暗室建立"场-多导体"耦合实验测试平台和双端口激励下的传输线多导体实验测试平台,并进行相关特性的测试。研究结果表明,在一定的频率范围内,两模型的等效性较好,即外施场对线缆的干扰测试可以用外加特定干扰线对其串扰的测试来等效,这为电缆的辐射敏感度测试问题提供了低成本的新思路,具有一定的应用前景。Cable,as electromagnetic coupling receptor,is one of the main sources of electromagnetic interference(EMI).With the increasingly complex electromagnetic environment,the radiated immunity test of the cable has been one of the important subjects in electromagnetic compatibility area.However,the cost of traditional test method is high.In this paper,an equivalence of two test methods on the basis of model of fields coupling to transmission lines(FCL)and model of transmission lines excited at two-port(ETP)respectively is proposed.According to the typical principle of multi-conductor transmission lines(MTLs),the substituted test method for that based on FCL is implemented by resorting to a generator line laid parallel and in proximity of the cable under test and fed at the terminations by two voltage sources,whose amplitude and phase shift is suitably controlled.Availability of the proposed scheme is preliminary investigated by simulation and subsequently verified by measurement through setting up fields coupling to multi-conductor transmission lines(FCL)test platform in anechoic chamber and transmission lines excited at two port test platform.Eventually,the results suggest that these two models consist well in certain frequency range,which provides a new approach for radiated immunity test of cable has a potential application prospect.

关 键 词：电缆 辐射敏感度 “场-多导体”传输线耦合 电波暗室 

分 类 号：TM246[一般工业技术—材料科学与工程] TM937[电气工程—电工理论与新技术]