The subject of on-line detection and location of inter-turn
short circuits in the stator windings of three-phase induction motors is
discussed, and a noninvasive approach, based on the computer-aided
monitoring of the stator current Parks Vector, is introduced.
Experimental results, obtained by using a special fault producing test
rig, demonstrate the effectiveness of the proposed technique, for detecting
inter-turn stator winding faults in operating three-phase induction
machines. On-site tests conducted in a power generation
plant, using the diagnostic instrumentation system developed, are also
reported.