FAULT DETECTION AND DIAGNOSIS IN AN INDUCTION MOTOR
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United States of America Patent
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Issued Date -
Sep 15, 2016
app pub date -
Feb 23, 2016
filing date -
Feb 23, 2016
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of detecting rotor and/or stator side faults in an induction motor. Signals indicative of three-phase stator currents of the induction motor are acquired (10) and converted (16) into three-phase current phasors. The three-phase current phasors are combined (16) to obtain a quantity having a DC component and an AC component. A frequency spectrum of the AC component is obtained (18) and compared (20,22) to a frequency spectrum of the AC component under healthy operating conditions in order to determine the presence of a rotor and/or stator side fault in the induction motor
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