Title :
Failure Analysis of Induction Motors: Magnetic Wedges in Compression Stations
Author :
Hanna, Robert ; Schmitt, Dennis W.
Author_Institution :
RPM Eng. Ltd., Mississauga, ON, Canada
Abstract :
This article presents the failure analysis and field measurements of five 7,500-hp induction motors driving reciprocating compressors for a natural gas compression station. The failure analysis examined fan design, vibration, motor-operating temperature, compressor loading profile, number of motor starts, and ambient temperature. A comparison between direct online motor starting and soft starting using an adjustable speed drive (ASD) and the impact on motor performance are presented. The settings and historical data gathered from the microprocessor protection relay for the motors are also covered and discussed.
Keywords :
failure analysis; induction motor drives; microprocessor chips; natural gas technology; relay protection; shapes (structures); starting; variable speed drives; ASD; adjustable speed drive; ambient temperature; compressor loading profile; direct online motor starting; failure analysis; fan design; field measurements; induction motors; magnetic wedges; microprocessor protection relay; motor performance; motor starts; motor-operating temperature; natural gas compression station; reciprocating compressors; soft starting; vibration; Compressors; Failure analysis; Induction motors; Magnetomechanical effects; Stator windings; Vibrations;
Journal_Title :
Industry Applications Magazine, IEEE
DOI :
10.1109/MIAS.2012.2191340
