Title :
Research and realization of a novel active common-mode EMI filter
Author :
Xinli Chang ; Wenjie Chen ; Yuehong Yang ; Kangping Wang ; Xu Yang
Author_Institution :
State Key Lab. of Electr. Insulation & Power Equip., Xi´an Jiaotong Univ., Xi´an, China
Abstract :
Voltages and currents of high power density power electronic circuits vary rapidly for its high speed switching, which results in serious electromagnetic interference (EMI) problems. The conventional used EMI filters are made of passive inductors and capacitors. Its size is usually comparable to that of the converter itself. As to this, active EMI filters (AEF) made of amplifiers and transistors are proposed. In this paper, a novel AEF topology used for DC-DC power converters is proposed. The most distinguished feature of this filter is that it shares the same power supply with the DC-DC converter. Thus, the size and weight of the whole filter is reduced to a great extent. The experimental results show that the proposed filter worked well and could attenuate the noise with high effectiveness.
Keywords :
DC-DC power convertors; electromagnetic interference; filtering theory; switched mode power supplies; AEF; DC-DC power converters; active EMI filters; capacitors; high power density power electronic circuits; novel active common-mode EMI filter; passive inductors; serious electromagnetic interference problems; Active filters; Current transformers; Electromagnetic interference; Noise; Passive filters; Power supplies; Windings; EMI; active; filter;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2015 IEEE
Conference_Location :
Charlotte, NC
DOI :
10.1109/APEC.2015.7104612