Comprehensive Comparison of Physical and Behavioral Approaches for Virtual Prototyping and Accurate Modeling of Three-Phase EMI Filters

Simone Negri, Giordano Spadacini (), Flavia Grassi, Piotr Lezynski, Robert Smolenski and Sergio Amedeo Pignari
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Simone Negri: Department of Electronics, Information and Bioengineering, Politecnico di Milano, 20133 Milano, Italy
Giordano Spadacini: Department of Electronics, Information and Bioengineering, Politecnico di Milano, 20133 Milano, Italy
Flavia Grassi: Department of Electronics, Information and Bioengineering, Politecnico di Milano, 20133 Milano, Italy
Piotr Lezynski: Institute of Automatics, Electronics and Electrical Engineering, University of Zielona Góra, 65-417 Zielona Góra, Poland
Robert Smolenski: Institute of Automatics, Electronics and Electrical Engineering, University of Zielona Góra, 65-417 Zielona Góra, Poland
Sergio Amedeo Pignari: Department of Electronics, Information and Bioengineering, Politecnico di Milano, 20133 Milano, Italy

Energies, 2024, vol. 17, issue 19, 1-22

Abstract: This paper addresses and compares the modeling of typical EMI filters used in three-phase power equipment obtained through two different approaches, namely, physical and behavioral. Firstly, an innovative physical EMI filter modeling procedure is presented, which relies on an analytical formulation in terms of chain-parameters matrices and allows for an easy evaluation of its attenuation characteristics. The considered procedure builds an overall filter model by combining simple components models, requiring the determination of only a limited number of parasitic elements. Furthermore, the latter can be easily estimated without the need to build any prototype, avoiding the costly trial-and-error design procedures currently applied in the industrial context. Additionally, the considered physical model is tailored for high-power filters, built with thick wires, while most of the physical models available in the literature are aimed at small-sized filters built on printed circuit boards. The procedure is validated step by step, discussing the accuracy of each component model and its impact on overall accuracy compared to the actual measurements of the final assembled filter. Secondly, a behavioral modeling procedure is presented, which is based on external measurements performed on the filter prototype and provides an equivalent circuit model. Specifically, it extends to three-phase filters a circuit model previously developed for the single-phase case. Lastly, a critical comparison between the proposed physical and behavioral models is presented, highlighting the strengths and limitations of both and suggesting optimal uses for each.

Keywords: conducted emissions (CE); electromagnetic interference (EMI); EMI filters; behavioral models; physical models; power converters (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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