Investigation of Cascade Connection Method to Improve the Insertion Loss of DM Active EMI Filters

In this article, a new kind of cascade connection method of differential mode (DM) active EMI filter (AEF) is put forward. Contrary to the conventional idea, it is found different kinds of cascade AEF connections show different insertion loss (IL). Based upon the mathematical analysis, among the eig...

Full description

Saved in:
Bibliographic Details
Published inIEEE journal of emerging and selected topics in power electronics Vol. 10; no. 1; pp. 1084 - 1094
Main Authors Zhou, Yongxing, Chen, Wenjie, Yang, Xu
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 01.02.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Active EMI filters (AEF)
Active filters
cascade connections
differential mode (DM) noise
Electromagnetic interference
Impedance
Insertion loss
insertion loss (IL)
Mathematical analysis
Passive filters
Sensors
Topology
Online AccessGet full text

Cover

More Information
Summary:In this article, a new kind of cascade connection method of differential mode (DM) active EMI filter (AEF) is put forward. Contrary to the conventional idea, it is found different kinds of cascade AEF connections show different insertion loss (IL). Based upon the mathematical analysis, among the eight potential connection methods, two cascade AEF-connection methods are more effective than the other six methods. The IL is much higher than the others. Therefore, the two effective topologies are further analyzed from several perspectives. And the best topology suiting the practical application is found. Several prototypes are fabricated and tested. Experimental results show good agreement with the theoretical calculation.
ISSN:2168-6777
2168-6785
DOI:10.1109/JESTPE.2021.3112576