Impedance Interaction and EMI Attenuation in Converters with an Integrated Transmission-Line Filter

Author

Baisden, Andrew C. ; Boroyevich, Dushan ; Van Wyk, Jacobus Daniel

Author_Institution

Center for Power Electronic Systems, The Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, 655 Whittemore Hall (0179), Blacksburg, VA 24061 USA

fYear

2007

fDate

Feb. 25 2007-March 1 2007

Firstpage

1203

Lastpage

1208

Abstract

Integrated transmission-line filters were previously proposed to attenuate conducted electro-magnetic interference (EMI) produced by high-frequency switching power converters. In this work, such a filter is manufactured using planar processing technologies, and it is tested for the first time with a 500W, front-end, single-phase power factor correction converter switching at 400 kHz. Impedance interactions between the filter, the converter, and the EMI measurement set-up are discussed, evaluated, measured, and improved to minimize undesired resonances and increase low-frequency EMI attenuation. Experimentally measured attenuation provided by the filter in the range from 100 kHz to 100 MHz was 20-50 dB.

Keywords

Attenuation measurement; Electromagnetic interference; Filters; Impedance measurement; Manufacturing processes; Power factor correction; Resonance; Switching converters; Testing; Transmission lines; Electromagnetic interference (EMI); Power factor correction circuit (PFC); Transmission-line filter;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference, APEC 2007 - Twenty Second Annual IEEE

Conference_Location

Anaheim, CA, USA

ISSN

1048-2334

Print_ISBN

1-4244-0713-3

Type

conf

DOI

10.1109/APEX.2007.357667

Filename

4195870