Title :
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
fDate :
Feb. 25 2007-March 1 2007
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;
Conference_Titel :
Applied Power Electronics Conference, APEC 2007 - Twenty Second Annual IEEE
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
1-4244-0713-3
DOI :
10.1109/APEX.2007.357667
