Simple spread-spectrum pulse-modulation technique for EMI mitigation in power converters

Saad Ul Hasan*, Yuba Raj Kafle, Graham E. Town

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

2 Citations (Scopus)

Abstract

The adoption of wide-bandgap (WBG) switching devices such as gallium nitride (GaN) transistors in power converters enables to achieve higher switching frequencies and higher power density with reduced cooling requirements and smaller passive components. However, the potential for increased electromagnetic interference (EMI) resulting from the faster switching transients possible with WBG devices is a concern in many applications. Hence techniques for reducing EMI are of increasing interest. In this paper we present a simple implementation of a spread-spectrum pulse-modulation technique to reduce the peak EMI generated by switch-mode power converters. The method is based on an aperiodic gate drive signal generated from two periodic signals, e.g. a sawtooth and a sinewave, which are anharmonically related. Simulations and experimental measurements of conducted EMI from a prototype of a SEPIC converter incorporating a hybrid GaN HEMT demonstrated a 10 dB reduction in peak EMI.

Original languageEnglish
Title of host publication2017 Australasian Universities Power Engineering Conference (AUPEC 2017)
Subtitle of host publicationproceedings
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages569-573
Number of pages5
ISBN (Electronic)9781538626474, 9781538626467
ISBN (Print)9781538626481
DOIs
Publication statusPublished - 2017
Event2017 Australasian Universities Power Engineering Conference, AUPEC 2017 - Melbourne, Australia
Duration: 19 Nov 201722 Nov 2017

Publication series

Name
ISSN (Electronic)2474-1507

Conference

Conference2017 Australasian Universities Power Engineering Conference, AUPEC 2017
CountryAustralia
CityMelbourne
Period19/11/1722/11/17

Fingerprint

Dive into the research topics of 'Simple spread-spectrum pulse-modulation technique for EMI mitigation in power converters'. Together they form a unique fingerprint.

Cite this