Electrical Bearing Damage, A Problem in the Nano- and Macro-Range
Volker Schneider, Cara-Nastasja Behrendt, Pauline Höltje, Daniel Cornel, Florian Michael Becker-Dombrowsky, Steffen Puchtler, Francisco Gerardo Antonio Gutierrez Guzman, Bernd Ponick, Georg Jacobs, Eckhard Kirchner
Abstract
Rolling bearings face different damaging effects: Besides mechanical effects, current-induced bearing damage occurs in electrical drive systems. Therefore, it is of increasing interest to understand the differences leading to known electrical damage patterns. It is of utmost importance not to consider the harmful current passage in the machine element as an isolated phenomenon but to take into account the whole drive system consisting of the machine elements, the electric motor and the connected power electronics. This publication works toward providing an overview of the state-of-the-art of research regarding electrical bearing currents.