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In this paper, a novel diagnostic and protection algorithm based on wavelet neural network is developed and implemented in real-time for inverter faults in the vector controlled induction motor drives. The phase currents of an induction motor drive for different faulted and unfaulted conditions are preprocessed by wavelet packet transform in order to minimize the structure and timing of the proposed...
This paper presents a new speed-sensorless vector control drive system for induction motor. In order to produce low harmonics in output voltage and current, reduce the torque fluctuation, and avoid the high voltage jump in switching time, the system utilizes three-level inverter to supply power for the induction motor and a SVPWM scheme with neutral point voltage balance strategy is applied for the...
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