A new DTC control for PMSM with torque ripple minimization and constant switching frequency

Abstract

PurposeThe aim of the paper is to conduct an analytical study of the two new methods of the permanent magnet synchronous motor torque and flux direct control with the predictive non‐linear torque and flux controller.Design/methodology/approachThe method is based on the prediction of the torque and flux error vector in order to minimize the torque ripple and ensure the constant switching frequency.FindingsThe proposed methods ensure the torque and flux error vector minimization, reduction of the torque ripples, and constant switching frequency without deterioration of the dynamic properties of the standard direct torque control (DTC).Originality/valueAn innovative predictive DTC method is presented. The correctness of the analysis and main assumptions, as well as the expected final results have been verified in simulation.