Prediction of motor bearing currents for converter operation

verfasst von

Michael Kriese, Eike Christian Wittek, Sven Gattermann, Hans Tischmacher, Gerhard Poll, Bernd Ponick

Abstract

The mechanisms that lead to bearing currents have been known for several years. Empirical results have been collected for a few combinations comprising converter, motor and motor feeder cable. Although there are a series of remedial measures, the basic parameters which favor subsequent bearing damage, especially corrugation, have still not been adequately clarified. After a brief introduction into the theory of motor bearing currents, this document will present two models that allow these currents to be calculated in advance for any drive system. An algorithm is subsequently described which can be used to estimate the potential danger for an induction motor taking into account the temperature and the speed.

Organisationseinheit(en)

Institut für Maschinenkonstruktion und Tribologie
Institut für Antriebssysteme und Leistungselektronik

Externe Organisation(en)

Siemens AG

Typ

Aufsatz in Konferenzband

Publikationsdatum

2010

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Elektrotechnik und Elektronik, Maschinenbau

Elektronische Version(en)

https://doi.org/10.1109/ICELMACH.2010.5608127 (Zugang: Geschlossen)