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This paper presents the simulation and experimental results of a 42 V fault-tolerant six-phase induction machine (6PIM) with opened stator phases. The 6PIM has symmetrical 60 degrees displacement winding allowing fault-tolerant modes for an electric power steering (EPS) application. A voltage source inverter (VSI) in closed-loop using a vector control feeds its. The 6PIM model is derived from the...
Mechanical anomalies like load troubles, great torque dynamic variations and torsional oscillations, result in the fatigue of the shaft driving electrical machine and other mechanical parts as bearings and gearboxes of complex electromechanical systems. Particularly in non-stationary condition, torsional vibration can reach important levels at resonant frequencies by producing weaknesses in the mechanical...
The aim of this paper is to present a new approach to detect broken bars fault in squirrel-cage induction machine. This approach is based on the study of stray flux signal after the supply disconnection. This type of test is useful especially for the maintenance purpose when it is possible to remove the load and supply effects. In this case, the current in rotor side decrease by its time constant...
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