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Based on inductive coupling approach, an on-line impedance frequency response method is proposed for early detection of defects in induction motors. Using a 4-pole induction motor as a system-under-test, the proposed method is validated experimentally through emulated inter-turn and shorted coil. Statistical indicators are also introduced for better detection of faults in the motor. As the setup has...
Inverter-generated high-frequency common-mode voltage and resultant common-mode current cause premature motor bearing failure; hence, high-frequency simulations of induction motors exposed to common-mode voltage are presented to gain insights into the motors' common-mode behavior. In addition, electrical discharge machining, one of the mechanisms responsible for bearing degradation, is modeled by...
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