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In this paper, an enhanced active fault-tolerant control (FTC) is proposed to solve a current sensor failure in the induction motor drive (IMD) using two current sensors. The proposed FTC method applies only one observer to diagnose the faults and recon gure the control signals by the space stator current. The diagnosis function is made up of a comparison algorithm between the measured current space vector and the estimated space vector. Then, incorrect feedback stator currents are replaced by the estimated values in the recon guration function. The amplitude of a healthy measured current is applied to adjusted the accuracy of estimated current signals. The IMD uses the eld-oriented control (FOC) technique to control the speed and torque. The e ectiveness in stabilizing the IMD system when a current sensor error occurs is veri ed by various simulations in the Matlab-Simulink environment.

An Enhanced Fault Tolerant Control Against Current Sensor Failures in Induction Motor Drive by Applying Space Vector