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Inter-turn stator winding fault diagnosis in three-phase induction motors, by Park's vector approach

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3 Author(s)
Cardoso, A.J.M. ; Dept. de Engenharia Electrotecnica, Coimbra Univ., Portugal ; Cruz, S.M.A. ; Fonseca, D.S.B.

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 Park's 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

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Energy Conversion, IEEE Transactions on  (Volume:14 ,  Issue: 3 )