PhD Defence Leonardo Corrêa Malburg | Miniaturized Passive EMI Filters for More-Electric Aircraft

Miniaturized Passive EMI Filters for More-Electric Aircraft

Leonardo Corrêa Malburg is a PhD candidate in the Department of Power Electronics. (Co) Promotors are prof.dr. G. Rietveld and prof.dr. T. Batista Soeiro from the Faculty of Electrical Engineering, Mathematics and Computer Science (EEMCS) of the University of Twente.

The increasing electrification of aircraft leads to a growing number of power electronic converters in onboard electrical systems. While enabling more efficient architectures, these converters introduce electromagnetic interference (EMI), requiring passive filters to ensure compliance with aerospace standards. These filters, however, contribute significantly to system mass and volume. This dissertation investigates how passive EMI filters for more-electric aircraft can be systematically miniaturized without compromising stability or conducted-emission performance. The research addresses impedance characterization of power converters, experimental evaluation of EMI in multi-converter networks, and filter design methodologies. It further analyzes the impact of filter placement strategies, including centralized, localized, and distributed configurations. The results show that improved system-level understanding reduces conservative design margins and enables more compact filtering solutions while maintaining compliance. The work contributes to the development of efficient and lightweight electrical architectures for future aircraft.