Direct Torque Control of an Induction Motor Using Fractional-Order Sliding Mode Control Technique for Quick Response and Reduced Torque Ripple

The performance of electric drive propulsion systems is often degraded by the high torque and flux ripples an drive. Traditional control methods, such as proportional plus integral (PI) controllers classical sliding mode (SMCs), have shown good response reduced ripple, but even lower ripple content at low voltage levels required for its effective use in vehicle (EV) applications. In this paper, a new direct (DTC) technique with space vector pulse width modulation (SVPWM) using fractional-order (FOSMC) two-level inverter (2LI) constant switching frequency proposed. effectiveness proposed controller compared conventional proportional-integral (SMC). Simulink models are developed MATLAB version R2018a to analyze robustness strategy. Simulation results demonstrate advantage reducing steady state less settling time during sudden load change conditions. also demonstrates better utilization stator through trajectory waveforms.