Predictive torque and flux control of an induction machine fed by an indirect matrix converter with reactive power minimization

A predictive torque and flux control method for an induction machine fed by an indirect matrix converter is presented in this paper. The control scheme selects the switching state that minimizes the error in the torque and flux predictions according to their reference values and, at the same time, the control scheme is enhanced by including a reactive power minimization strategy with the goal to have unity power factor in the input side of the converter. The control objectives are accomplished by using a prediction horizon of one sample time and a very intuitive control law. The proposed control scheme is validated trough simulation results where is shown that the predictive approach can be implemented simply with a good tracking of the torque and flux to their respective references and input currents with unity power factor.