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This paper proposes a novel diagnosis method for detection and discrimination of two typical mechanical failures in induction motors by stator current analysis: load torque oscillations and dynamic rotor eccentricity. A theoretical analysis shows that each fault modulates the stator current in a different way: torque oscillations lead to stator current(More)
This paper examines the detection of mechanical faults in induction motors by an original use of stator current time-frequency analysis. Mechanical faults lead generally to periodic load torque oscillations. The influence of the torque oscillations on the induction motor stator current is studied using an analytical approach. The mechanical fault results in(More)
—We have constructed an optoelectronic very-large-scale integration (OE-VLSI) chip with a 540-element receiver and transmitter array. Differential optical signaling was used in conjunction with a fully differential electrical architecture for the receiver and transmitter circuits. The chip was partitioned into multiple functional channels to demonstrate(More)
In this paper, a new technique of on-line detection of inter-turn short circuits in stator of permanent magnet synchronous motor (PMSM) is proposed. The study is focused on a PMSM with non sinusoidal electromotive force (emf). The technique is formulated by combining extended Parkpsilas vector approach and classical recursive least squares algorithm (RLS).(More)
  • J. Faucher
  • 2005
Although linear state feedback control is a classical scheme for converter control, fuzzy state feedback is rather rare but efficient. Nevertheless, there is no simple and efficient method for tuning. This paper presents a new, simple and robust method for the tuning of fuzzy feedback controllers with the help of experimental designs. There is no need of(More)
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