A Comparative Study of Carrier-Frequency Modulation Techniqu(6)
时间：2025-04-26
Abstract—A rigorous mathematical analysis and a comparative study of carrier-frequency modulation (CFM) techniques for the conducted electromagnetic interference (EMI) suppression in pulsewidth-modulated converters is presented. CFM techniques dither the
TSEetal.:CARRIER-FREQUENCYMODULATIONTECHNIQUES
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(a)
(b)
(c)
Fig.6.Theoreticalpowerspectraoftheinputcurrentwith1f =16
.
=6kHzand =2.(b)f
=750Hzand
).
Increasingcaneffectively
dispersethelow-orderharmonics.However,withthe
sameand
different
Fig.7.Modelofthetriangle-likefilterresponseintheEMCanalyzer.
smaller
.Themeasuredspectrumisunabletodif-ferentiatetheeffectiveness
of
issufficientlylarge,thePSDofthemeasuredPWM
waveformisuniformlydistributed.Themeasuredspectrumwill
increases.increase
as
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