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Automatika : journal for control, measurement, electronics, computing and communications, Vol. 53 No. 2, 2012.

Original scientific paper

https://doi.org/10.7305/automatika.53-2.166

Improved EMC of Switched-Mode Power Converters with Randomized Modulation

Franc Mihalič orcid id orcid.org/0000-0002-1458-3126 ; University of Maribor, Faculty of Electrical Engineering and Computer Science, Institute of Robotics, Smetanova 17, 2000, Maribor, Slovenia

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Abstract

This paper surveys some analytical and experimental results concerning different randomized modulation strategies in switched-mode power converters (SMPCs). After a short review of practical experiences within the literature it presents the benefits of several randomized schemes for power converters (i.e. reduced electromagnetic interference - EMI, and lower acoustic noise). It also introduces the mathematical background for dealing with randomized modulation within the medium-frequency range: power spectrum density (PSD). Finally, the EMI measurements confirm the improved EMC performances of the randomized boost rectifier, as also in the DC-DC buck converter.

Keywords

Switched-mode power converters (SMPCs); Randomized pulsewidth modulation (RPWM); Electromagnetic compatibility (EMC); Power spectral density (PSD)

Hrčak ID:

84023

URI

https://hrcak.srce.hr/84023

Publication date:

1.6.2012.

Article data in other languages: croatian

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