Generalized Model Predictive Direct Torque Control: Long prediction horizons and minimization of switching losses

This paper presents a generalized Model Predictive Direct Torque Control scheme with an extended horizon, which is composed of multiple hinges (groups of switch transitions) linked by several extrapolation segments. The controller´s performance is further enhanced by minimizing the switching losses in the inverter. Initial results suggest that with respect to state of the art Direct Torque Control, the switching losses are reduced by up to 60%, while the Total Harmonic Distortion of the torque is at the same time improved by 20%. These results are based on a medium-voltage three-phase Neutral Point Clamped inverter driving an induction machine.