For medium-voltage drives, model predictive direct torque control (MPDTC) significantly
reduces the switching losses and/or the harmonic distortions of the torque and stator
currents, when compared to standard schemes, such as direct torque control or pulse width
modulation. Extending the prediction horizon in MPDTC further improves the performance.
At the same time, the computational burden is greatly increased due to the combinatorial
explosion of the number of admissible switching sequences. Adopting techniques from …

Abstract Model predictive direct torque control (MPDTC) is a recent control scheme for three-
phase ac electric drives based on direct torque control (DTC). Using a dynamic model of the
drive, MPDTC predicts several future switching transitions, extends the output trajectories
and chooses the inverter switch positions that minimize the switching frequency. The latest
version of MPDTC allows for a long switching horizon, which is composed of multiple
switching events (group of switching transitions) connected by extension segments. This …