Graphical analysis of the spectra of EMI sources in power electronics

Author

Costa, François ; Magnon, Didier

Author_Institution

SATIE ENS de Cachan, France

Volume

20

Issue

6

fYear

2005

Firstpage

1491

Lastpage

1498

Abstract

A new method of analysis is proposed to graphically predict the spectrum envelope of electromagnetic interference (EMI) emitted by power electronics equipment. Relationships between the time-domain (waveforms) and the frequency-domain (spectrum) of some typical EMI signals observed in power converters are pointed out. Special attention is paid to the analysis of the transient functions of EMI signals. It is shown they behave as filtering or "smoothing" functions in the high-frequency part of the spectrum.

Keywords

electromagnetic interference; power convertors; spectral analysis; time-frequency analysis; EMI; electromagnetic interference; frequency-domain analysis; power converter; power electronics; spectrum envelope; spectrum graphical construction; time-domain analysis; transient function; Electromagnetic analysis; Electromagnetic interference; Electromagnetic transients; Filtering; Frequency domain analysis; Power electronics; Signal analysis; Smoothing methods; Time domain analysis; Transient analysis; EMI frequency-domain analysis; Electromagnetic interference (EMI) analysis; spectrum graphical construction;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2005.857564

Filename

1528623