Calculation of Electric Machines Vibration using an Analytical Beam Element Model

The stator core vibration caused by electromagnetic forces is an important topic in the design of electric ma-chines. A crucial task for the comprehensive analysis of this issue is to accurately estimate the eigenmodes and eigenfrequencies of the mechanical system. This paper presents a new analytical model based on beam elements as an alternative to the typical finite-element (FE) and classical analytical models applied for this purpose. The proposed model takes the stator yoke and teeth into account and is able to predict the system eigenmodes and eigenfrequencies. The results are compared to FE and analytical calculations and validated based on measurements performed on a stator core.