HV eDrive System Impedance Analysis for Insertion Loss Characterization of Active EMI Filters

Active EMI Filter (AEF) design for high voltage applications pose several challenges. Theoretical models related to AEFs in literature are comprehensive and well-documented, however the influence of system parameters for practical high power applications has not been exhaustively researched yet. For effective filter design, practical technicalities and challenges should be explored extensively. To correctly predict the insertion loss characteristics of a given application, the investigation of system parameters is mandatory. This paper aims at thoroughly investigating the real impedances of the eDrive system, to predict the performance behavior of various AEF topologies. To assess the implications of load and source impedances, the frequency dependent impedances extracted from high power eDrive system are utilized to quantify the insertion loss characterization of AEF.