Fractional Order Sliding Mode Control based Model Predictive Current Control of Multi-phase Induction Motor Drives

A high robust and accurate control system is required to regulate the speed and torque in multi-phase induction motors. A fractional order sliding mode control is employed in this paper to model a robustified and chattering free control paradigm using the basic mathematical formulation of sliding mode control. The proposed control scheme eliminates the inherent chattering in sliding mode control using the fraction calculus theory. Model predictive control is used in the inner loop to produce an optimal switching states for five phase induction motor. The analysis of the aforementioned control strategies provides effective and smooth speed convergence with less error showing a superior performance over conventional PI and SMC schemes. The efficacy of the proposed design is analyzed using the IM model developed in MATLAB/Simulink.