الفهرس 
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Abstract
This present thesis is to introduces a novel sensorless model-predictive torque-flux control (MPTFC) for two-level inverter-fed IM drives to overcome the high torque ripples issue, which is evidently presented in model-predictive torque control (MPTC). The suggested control approach will be based on a novel modification for the adaptive full-order-observer (AFOO). To mitigate the machine losses, particularly at low speed and light load operations, the loss minimization criterion (LMC) is suggested. A comprehensive comparative analysis between the performance of IM drive under conventional MPTC, and those of the proposed MPTFC approaches (without and with LMC consideration) has been carried out to confirm the efficiency of the proposed MPTFC drive. The suggested sensorless system can operate at very low speeds and has the better dynamic and steady-state performance.