A Hybrid Modelling Approach for Evaluating the Emissions from a Powertrain

The paper deals with the analysis of the electromagnetic emission from a powertrain for automotive applications. A hybrid modelling approach is presented, based on the assumption that only the cable subsystem of the powertrain is known, whereas all the other components such as drives, inverters, and batteries are only known in terms of their nominal behavior. The hybrid approach is based on the experimental characterization of the components and on the full-wave simulation of the cable subsystem. All the subsystems are then represented in term of equivalent circuital multiport and a system-level circuital simulation is carried out to derive the high-frequency currents and voltages. These quantities are finally used to estimate the emissions from the powertrain. Benchmark with alternative models and with the experimental results show the effectiveness of the proposed methodology.