A holistic vibration analysis of an electric engine including mechanical and electrodynamic interactions

Abstract

In this paper, a method for vibration analysis of electric engines and associated structure is presented. For this purpose, a multi-body simulation (MBS) is extended in such a way that electromagnetic loads can be considered using the finite element method (FEM). Subsequently, the determined loads lead to an excitation of the structural vibrations and a sound radiation of the engine, which is analyzed at selected operating points. A test rig will be used to validate the implemented method. Finally, different design variations of the engine are evaluated with respect to their acoustic behavior. The developed method is not limited to the presented application, but it can be applied to any system with electric drives.