Synthesizing Power Electronic Switching Waveforms For Reduced EMI Generation

Niall F Oswald, BH Stark, C. Hargis, W Drury, DMJ Holliday

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

1 Citation (Scopus)


A method of analysing switching waveforms using their derivative terms shows that imposing an ‘S-shaped’ profile on the switching transitions offers significant improvements in the control of power loss and radiated EMI in power converters. Numerical modelling to investigate the effects of varying the timing parameters of the waveforms enables switching transients to be shaped to reduce high-frequency spectral content. The resulting synthesized waveforms are used to demonstrate experimentally that total high-frequency power content is reduced without any associated increase in switching time and therefore power loss.
Translated title of the contributionSynthesizing Power Electronic Switching Waveforms For Reduced EMI Generation
Original languageEnglish
Title of host publicationPower Electronics, Machines and Drives 2010
Number of pages6
Publication statusPublished - 21 Apr 2010

Bibliographical note

Conference Proceedings/Title of Journal: Power Electronics, Machines and Drives (PEMD 2010), 5th IET International Conference on
Conference Organiser: The IET


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