Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
권호 표지

A Novel Active Common-mode EMI Filter for Mitigating Conducted EMI

전도성 EMI저감을 위한 능동형 공통모드 EMI 필터

  • Son Yo-Chan (School of Electrical Engineering and Computer Science, College of Engineering, Seoul National University) ;
  • Sul Seung-Ki (School of Electrical Engineering and Computer Science, College of Engineering, Seoul National University)
  • 손요찬 (서울대학교 공과대학 전기컴퓨터공학부) ;
  • 설승기 (서울대학교 공과대학 전기컴퓨터공학부)
  • Published : 2002.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents a novel active common-mode EMI filter for the PWM inverter application. The proposed filter is based on the current sensing and compensation circuit and it utilizes a fast transistor amplifier for the current compensation. The amplifier utilizes an isolated low-voltage dc power supply for its biasing and it is possible to construct the active filter independent of the source voltage of the equipment. Thus the proposed active filter can be used in any application regardless of its working voltage. The effectiveness of the proposed circuit is verified by experimental results.

Keywords