Investigation of influence of bearing load and bearing temperature on EDM bearing currents

Author

Magdun, Oliver ; Gemeinder, Yves ; Binder, Andreas

Author_Institution

Inst. for Electr. Energy Conversion, Darmstadt Univ. of Technol., Darmstadt, Germany

fYear

2010

fDate

12-16 Sept. 2010

Firstpage

2733

Lastpage

2738

Abstract

To detect the worst case and the best case of the bearing operating conditions concerning the magnitude of the high frequency discharge bearing currents (“EDM currents”) and the frequency of electric discharges in the bearings of the small power inverter-fed AC motors, systematic investigations have been performed for three, 4-pole, 1.5 kW squirrel cage induction motors at different speeds, bearing loads and bearing temperatures.

Keywords

PWM invertors; discharges (electric); electrical discharge machining; machine bearings; squirrel cage motors; EDM bearing current; bearing load; bearing temperature; electric discharge; electric discharge machining; high frequency discharge bearing current; power 1.5 kW; power inverter-fed AC motor; squirrel cage induction motor; Current density; Force; Induction motors; Lubricants; Resistance; Temperature measurement; EDM currents; bearing failures; bearing load; bearing resistance; bearing temperature; critical thickness;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2010 IEEE

Conference_Location

Atlanta, GA

Print_ISBN

978-1-4244-5286-6

Electronic_ISBN

978-1-4244-5287-3

Type

conf

DOI

10.1109/ECCE.2010.5618061

Filename

5618061