Active Common-mode Noise Suppressor with Feedback Amplifier and Ferrite-cores

被引：0

作者：

Mahmood, Farhan ^{[1
]}

Okamoto, Ken ^{[1
]}

Arai, Naruto ^{[1
]}

Kato, Jun ^{[1
]}

机构：

[1] NTT Corp, Network Technol Labs, Tokyo, Japan

来源：

2018 IEEE INTERNATIONAL TELECOMMUNICATIONS ENERGY CONFERENCE (INTELEC) | 2018年

关键词：

power conversion equipment; common-mode noise; ferrite-core; active noise suppressor; feedback amplifier;

D O I：

暂无

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：

Power conversion equipment (PCE) such as rectifier is installed to telecom facilities, which is known for generating common-mode noise to power cables in a frequency range from 100 kHz to 10 MHz. To suppress the common-mode noise without disconnecting the power cables, ferrite-cores are applied, though its insertion loss are less than 5 dB so that it cannot suppress the common-mode noise enough. To solve this problem, authors propose active common-mode noise suppressor (ACNS) which is consist of two ferrite-cores and a feedback amplifier, to suppress the common-mode noise from the PCE for more than 10 dB without disconnecting the power cables. This paper describes a basic principles and development of the ACNS and it is found that the proposed ACNS can suppress the common-mode noise for more than 10 dB in the frequency range from 100 kHz to 8 MHz without disconnecting the power cables, by measuring its insertion loss characteristics in frequency-domain and suppression effect in time-domain.

引用

页数：4

共 4 条

[1] An active EMI filtering technique for improving passive filter low-frequency performance [J].