Host
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Client & task
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Objectives
Wide-bandgap (WBG) converters generate extremely steep dv/dt and di/dt transitions, leading to large common-mode and differential-mode interference that propagates through power cables, heatsinks, and transformer parasitics. Meeting EMC regulations under these conditions requires advanced magnetic filters capable of operating up to tens of MHz with predictable behaviour.
However, traditional EMC chokes and filters are designed using low-frequency models that fail to capture key high-frequency effects such as distributed capacitance, dielectric losses, winding proximity effects, and inter-winding coupling. Furthermore, next-generation HF materials offer opportunities for improved EMC filtering but are not yet represented in standard design tools.
This project develops accurate models and design methodologies to enable compact, reliable EMC magnetics tailored to WBG-based systems—an essential step toward fully exploiting WBG technology in real-world applications.
Objectives 1
WBG semiconductors offer low switching losses and high voltage operation, which produces high rates of change of voltages and currents in PE systems. These result in increased differential and common mode currents, which must be externally filtered. This project will investigate methods to design improved and cost-effective EMC filter magnetics, and to produce accurate models for HF simulation.
Objectives 2
Topics include the extension of magnetic models to EMC frequencies (up to 100 MHz), including HF materials into the DM and CM filters, modelling of parasitics & HF coupling, impact of winding geometries and loss calculations.
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Expected Results
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Sed fringilla gravida lorem, id rhoncus justo egestas sed. Nulla sagittis vel ante sit amet neque non tellus interdum tincidunt eget eu odio. Awesome!
