Experimental characterization of conducted EMI in three-phase power electronics system using terminal model

Abstract

This paper investigates the relevant issues for experimental characterization of conducted EMI resulting from three-phase power electronics system. Terminal model is used to describe the EMI behavior. The theoretical analysis and equivalent terminal model for three-phase power electronics system are conducted and proposed respectively. The measurement setup which fulfills the requirement of parameter extraction is then discussed. Measurement procedure is described and the obtained data is processed to calculate the desired parameters. Using the model and parameters from experimental extraction, conducted EMI level can be predicted and the results are compared with measurement to validate the correctness of the characterization.