A Novel Neutral Point-Based Active EMI Filter for Common Mode Noise Attenuation

被引：14

作者：

Zhou, Yongxing ^{[1
]}

Chen, Wenjie ^{[1
]}

Yang, Xu ^{[1
]}

Yu, Zheyuan ^{[1
]}

Meng, Xin ^{[1
]}

Ren, Pengyuan ^{[1
]}

Chen, Yuxuan ^{[1
]}

Huang, Xingwei ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2022年 / 37卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Sensors; Capacitors; Attenuation; Passive filters; Electromagnetic interference; Topology; Impedance; Active electromagnetic interference (EMI) filters; common mode noise; EMI attenuation; STABILITY ANALYSIS; REDUCTION; IMPROVE;

D O I：

10.1109/TPEL.2022.3161288

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This letter proposed a new configuration of neutral point-based common mode (CM) active electromagnetic interference (EMI) filter (NP-CM-AEF). It is achieved by setting the reference of filtering system to the neutral point of equipment under test. Therefore, CM noise could be sensed across neutral point and ground. Meanwhile, compensation signal could be built by op-amp and re-injected to cancel the initial CM noise. The main advantage of the proposed NP-CM-AEF lies in that no more noise separation such as bulky passive CM transformer is needed to get pure CM noise. The whole filter becomes smaller, lighter, and more compact compared with traditional CM AEF. Working principle is analyzed in details and hardware experimental tests are also performed. It shows that the proposed NP-CM-AEF has a good attenuation to CM noise and total size is pretty tiny.

引用

页码：10081 / 10085

页数：5

共 11 条

[1] Modeling and Stability Analysis of Active/Hybrid Common-Mode EMI Filters for DC/DC Power Converters [J].