A Novel Approach to Reduce EMI in Switched-Mode Power Supplies Operating at Fixed Switching Frequencies

Hubert F, Dorsch P, Rupitsch S, Dürbaum T (2019)


Publication Type: Conference contribution, Conference Contribution

Publication year: 2019

Publisher: VDE VERLAG GMBH · Berlin · Offenbach

Pages Range: 630 - 637

Conference Proceedings Title: PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management

Event location: Nuremberg, Germany DE

ISBN: 978-3-8007-4938-6

Abstract

This contribution presents a novel approach to reduce electromagnetic interference of switched-mode power supplies. The interference reduction is based on the inverse piezoelectric effect. Providing a low-impedance propagation path for conducted emissions at a resonance frequency of a piezoelectric element, we can attenuate a discrete disturbance peak of a disturbance spectrum. We successfully integrated our novel piezoelectric EMI-filter in a flyback-converter in order to suppress a common-mode disturbance peak. Measurement results reveal that the suppression effect can be improved by 31 dB compared to a similar regular interference-suppression capacitor. Regarding the practical use of the developed piezoelectric EMI-filter, the temperature dependence is examined in addition.

Authors with CRIS profile

How to cite

APA:

Hubert, F., Dorsch, P., Rupitsch, S., & Dürbaum, T. (2019). A Novel Approach to Reduce EMI in Switched-Mode Power Supplies Operating at Fixed Switching Frequencies. In VDE VERLAG GMBH, Berlin · Offenbach (Eds.), PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (pp. 630 - 637). Nuremberg, Germany, DE: VDE VERLAG GMBH · Berlin · Offenbach.

MLA:

Hubert, Florian, et al. "A Novel Approach to Reduce EMI in Switched-Mode Power Supplies Operating at Fixed Switching Frequencies." Proceedings of the PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, Nuremberg, Germany Ed. VDE VERLAG GMBH, Berlin · Offenbach, VDE VERLAG GMBH · Berlin · Offenbach, 2019. 630 - 637.

BibTeX: Download