DCリンクキャパシタによる大電流SiCパワーモジュールのEMI特性改善効果

抄録

This paper studies electromagnetic interference (EMI) noise mitigation for large-current SiC power modules with integrated DC-link capacitors. Symmetrically-placed DC-link capacitors in a power module most effectively reduce conducted-EMI in the MHz-band. The challenge is to reduce the several hundred kHz band differential-mode noises caused by the parallel connection of the smoothing- and DC-link capacitors.