Title :
Motor winding problems caused by inverter drives
Author :
Fenger, Mark ; Campbell, Steven R. ; Pedersen, Jan
Author_Institution :
Iris Power Eng. Inc, Toronto, Ont., Canada
Abstract :
This article describes measurements of the surge voltage characteristics from a group of eight low-voltage motors driven by inverter fed drives. As described here, two motors have repeatedly been subjected to unexpected stator winding failures. Inspection of the windings after failure indicated that the main cause of the failures is the voltage surge environment applied to the stator winding.
Keywords :
AC motor drives; failure analysis; inspection; invertors; partial discharge measurement; stators; surges; voltage measurement; humidity effect; inverter fed drives; low-voltage motors; motor winding problems; partial discharges; stator; surge voltage measurement; unexpected stator winding failures; voltage surge environment; windings inspection; Capacitance measurement; Coils; Frequency; Inverters; Low voltage; Partial discharges; Pulse measurements; Stator windings; Surges; Wounds;
Journal_Title :
Industry Applications Magazine, IEEE
DOI :
10.1109/MIA.2003.1206913
