Izvorni znanstveni članak
https://doi.org/10.7305/automatika.53-2.166
Improved EMC of Switched-Mode Power Converters with Randomized Modulation
Franc Mihalič
orcid.org/0000-0002-1458-3126
; University of Maribor, Faculty of Electrical Engineering and Computer Science, Institute of Robotics, Smetanova 17, 2000, Maribor, Slovenia
Sažetak
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.
Ključne riječi
Switched-mode power converters (SMPCs); Randomized pulsewidth modulation (RPWM); Electromagnetic compatibility (EMC); Power spectral density (PSD)
Hrčak ID:
84023
URI
Datum izdavanja:
1.6.2012.
Posjeta: 3.870 *