Journal of Electrical Engineering : Volume 18 / 2018 - Edition : 2

ANALYZE THE PERFORMANCE OF CSI FED INDUCTION MOTOR WITH A NOVEL MRAS BASED CONTROLLER TO MINIMIZE THE TORQUE RIPPLE

Authors:
PANNEER SELVAM N
RAJASEKARAN V
ARUL PRASANNA M
GERALD CHRISTOPHER RAJ
Domain:
electrical machines and drives
Abstract:
A simple mathematical model is constructed to analyze the performance of Sensorless Field oriented controlled Current Source Inverter (FOC - CSI) fed induction motor drive to minimize the torque ripples during low speed operation is proposed in this paper. The estimated torque and stator flux are significant to control the system effectively in FOC. However the torque and stator flux are adversely affected by the stator resistance variations due to temperature and low frequency results torque ripples and the system becomes unstable. A new model reference adaptive system (MRAS) based algorithm for torque estimation is analyzed mathematically in Field oriented vector controlled CSI fed induction motor. The MATLAB/Simulink and hardware results reveal that the proposed method is able to obtain precise flux and torque control, even for very low speed operations.
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