2024/02/01 by Attila Gonda, Stefan Paulus, Simon Graf +3
Engineering · #Adhesion, Friction, and Surface Interactions #Electrical Contact Performance and Analysis #Gear and Bearing Dynamics Analysis
paper · doi:10.1016/j.triboint.2024.109354
openalex publication_date 2024/02/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
In modern frequency inverter controlled electric drive trains, parasitic electric currents can occur in rolling bearings and lead to damages of the bearing components. In the prediction of bearing currents, the bearing capacitance plays a major role. It is commonly calculated based on the Hertzian area and the central lubrication gap height of the contact of the rolling contacts using different correction factors. In this work, a combined simulation model is presented to calculate the rolling bearing capacitance. It considers the capacitance of the rolling contact as well as the regions outside the contact domain. The model consists of an electrically extended EHL simulation of the rolling contact and a FEM simulation of the surroundings. The results of the combined simulation method show a good agreement with experimental results without the use of correction factors.