基于环形LC单元的新型连接方式及其在平面EMI滤波器中的应用  

New Connection Based on LC Unit for Its Application in Planar EMI Filter

作　　者：龚敏[1] 王世山[1] 宋峥[1] 

机构地区：[1]南京航空航天大学自动化学院,南京210016

出　　处：《南京航空航天大学学报》2014年第1期115-120,共6页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：国家自然科学基金(51177071)资助项目;台达环境与教育基金会<电力电子科教发展计划>(DREK2013004)资助项目;研究生创新基地(实验室)开放基金(kfjj120204))资助项目

摘　　要：LC单元是指"感容"集成的模块,是组成EMI滤波器的重要元件之一。理想情况下,LC单元由双面螺旋线构成。基于环形LC单元的不同连接方式,提出了一种新型结构———完成共模电感和差模电容的集成。本文建立了LC单元的等效模型,并在此基础上分析了该结构在差、共模电流作用下的参数模型。实验和理论研究表明,所提出的模块能有效增大共模电感值。The LC unit is an important component of the EMI filter for its easy ＂inductance-inductance＂ integration, and usually the ideal LC unit is composed of the double helix structure. Based on the differ- ent ways of connection on LC units, a new structure is presented, which is mainly used for the integra- tion of common-mode inductors and differential-mode capacitor. According to the transmission line the- ory, the equivalent model of LC units is established, and then the parameter models of the new struc- ture are analyzed under the conditions of the differential-mode current and the common-mode current. Moreover, the research shows that the proposed model has larger common-mode inductor, which is also confirmed by the corresponding experiment.

关 键 词：平面EMI滤波器 LC单元 共模电感 差模电容 

分 类 号：TN713.4[电子电信—电路与系统]