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The aim of this paper is to investigate the effects of the bearing faults on the stator current and on the efficiency of the induction motors, in order to verify the effectiveness of the analysis of these variables for diagnostic purposes. The paper reports the experimental results on four different types of bearing faults.
The aim of this paper is to verify the effectiveness of the stator current analysis for the detection of bearing problems. The paper reports the experimental results on four different types of bearing faults.
Damage of bearings is the most common cause of failures of squirrel-cage induction motors. A faulty bearing results in additional motor vibrations. They are reflected in the harmonic content of stator currents. In certain operating conditions the current signal is the sole source of information on the state of the motor. The paper presents a mathematical model of the motor, allowing for rotor eccentricities...
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