Title :
A novel active common-mode EMI filter for PWM inverter
Author :
Son, Yo-Chan ; Sul, Seung-Ki
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., South Korea
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 :
DC-AC power convertors; PWM invertors; active filters; amplifiers; compensation; electric current measurement; electric sensing devices; electromagnetic interference; PWM inverter; active common-mode EMI filter; compensation circuit; current compensation; current sensing circuit; fast transistor amplifier; isolated low-voltage DC power supply; working voltage; Active filters; Circuit noise; Coupling circuits; Electromagnetic interference; Frequency; Inductors; Insertion loss; Passive filters; Pulse width modulation inverters; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2002. APEC 2002. Seventeenth Annual IEEE
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-7404-5
DOI :
10.1109/APEC.2002.989297
