Modeling Strategy for EMI Filters

Performance of electromagnetic interference (EMI) filters in power-electronics applications is limited by the parasitic coupling between the components of the filters and the self-parasitic of each component. While these parasitic effects can be partially taken into account on the circuit level, it...

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Veröffentlicht in:IEEE transactions on electromagnetic compatibility 2020-08, Vol.62 (4), p.1572-1581
Hauptverfasser: He, Ruijie, Xu, Yang, Walunj, Sameer, Yong, Shaohui, Khilkevich, Victor, Pommerenke, David, Aichele, Hermann L., Boettcher, Martin, Hillenbrand, Philipp, Klaedtke, Andreas
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Sprache:eng
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Zusammenfassung:Performance of electromagnetic interference (EMI) filters in power-electronics applications is limited by the parasitic coupling between the components of the filters and the self-parasitic of each component. While these parasitic effects can be partially taken into account on the circuit level, it is difficult to estimate their values. In this article, a full-wave modeling methodology is proposed to predict the performance of a complete EMI filter up to 1 GHz. Following the proposed methodology, the mutual couplings among the EMI filter components are taken into account as well as the self-parasitics of each individual component. Experiments and simulations are carried out to validate the modeling methodology. A self-parasitic cancellation technique is also applied to demonstrate the benefits of three-dimensional modeling methodology in EMI filter design.
ISSN:0018-9375
1558-187X
DOI:10.1109/TEMC.2020.3006127