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EMI filter design for high frequency power converters
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.ORCID iD: 0000-0002-8466-946X
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
2012 (English)In: 2012 11th International Conference on Environment and Electrical Engineering, EEEIC 2012: Conference Proceedings, IEEE conference proceedings, 2012, p. 586-589Conference paper, Oral presentation only (Refereed)
Abstract [en]

With the emerging power semiconductor devices in GaN and SiC technology and the development of high frequency multilayered PCB power transformers, power efficient DC-DC converters are designed in megahertz switching frequency range. The increased switching frequency in combination with sudden changes in current “di/dt” or voltage “dv/dt” levels generate higher order harmonics, which cause Electro Magnetic Interference (EMI). One of the major challenges, to design the power stage of these converters, is to minimize the EMI because it affects their Electro Magnetic Compatibility (EMC). There is a spread belief that the EMI becomes much worse in a MHz switching converter compared to the current ones operating below 150 kHz. This paper investigates the consequences on implementation of a line filter for suppressing conducted EMI in high frequency power converters. The results are based on electronic simulations, comparing EMI and filter design, for a 200 kHz and 2 MHz buck converter under similar conditions. By analyzing the noise frequency spectrum of both the converters it is observed that the size of filter components, such as capacitors and common mode chokes is greatly reduced in case of 2MHz Buck converter. The results show that the size reduction that can be accomplished by increasing the switching frequency to MHz range can be improved further by a smaller implementation of the line filter as well.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2012. p. 586-589
Keywords [en]
Electro Magnetic Interference, Electro Magnetic Compatibility, Line Impedance Stablizer Network, Pulse With
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-16524DOI: 10.1109/EEEIC.2012.6221444Scopus ID: 2-s2.0-84864246773Local ID: STCISBN: 978-1-4577-1830-4 (print)OAI: oai:DiVA.org:miun-16524DiVA, id: diva2:536117
Conference
2012 11th International Conference on Environment and Electrical Engineering, EEEIC 2012;Venice;18 May 2012through25 May 2012;Category numberCFP1251I-CDR;Code91459
Available from: 2012-09-05 Created: 2012-06-21 Last updated: 2016-10-20Bibliographically approved
In thesis
1. Power electronics for - and modelling of - resistance welding equipment
Open this publication in new window or tab >>Power electronics for - and modelling of - resistance welding equipment
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2013. p. 134
Series
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 163
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-20947 (URN)STC (Local ID)978-91-87557-07-1 (ISBN)STC (Archive number)STC (OAI)
Supervisors
Available from: 2014-01-02 Created: 2014-01-02 Last updated: 2016-10-20Bibliographically approved
2. Analysis and EMI suppression of MHz frequency range switch mode power supplies
Open this publication in new window or tab >>Analysis and EMI suppression of MHz frequency range switch mode power supplies
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2013. p. 139
Series
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 164
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-21019 (URN)STC (Local ID)978-91-87557-08-8 (ISBN)STC (Archive number)STC (OAI)
Supervisors
Available from: 2014-01-13 Created: 2014-01-13 Last updated: 2016-10-20Bibliographically approved

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Majid, AbdulSaleem, JawadBertilsson, Kent

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