Thévenin Equivalent Circuits for Modeling Coupled Common/Differential-Mode Behavior in Power Electronic Systems

Modeling the unintended common- and differential-mode (CM DM) behavior of multi-converter power electronic-based systems can be a challenge. Chief among issues is need for detailed knowledge converter hardware to determine model parameters. In this paper, focus on derivation Thévenin-based models that only require characterization at terminals. Periodic linear time varying system analysis first used derive consider applicability such models. Subsequently, methods experimentally characterize Thévenin parameters are established. The modeling approach then establish worst-case predictions CM/DM microgrid which validated using both time-domain simulation experiment.