Systemsimulations with EMI-Filter in an Automotive HighVolt Environment

Abstract:
The goal of this work is to realize a physical simulation model of a high volt automotive EMI filter. The modeling emphasis is on not only having a black box of the same behavior but on creating an equivalent circuit representing understood physical behavior. This approach leads to a fully transparent structure which enables the developer to optimize the filter by changing parameters without losing the correlation to the physical basics of the filter’s high frequency behavior. In the project “InSeL” this approach could be verified together with Robert Bosch GmbH in a real test setup. Comparing real measurements with different modeling approaches clearly shows the benefits and limits of S-parameter and physical modeling.