A Duty Cycle based Finite-set Model Predictive Torque Control for Permanent Magnet Synchronous Motor Drives

Abstract

This paper presents a duty cycle based finite-set model predictive torque control (FS-MPTC) for permanent magnet synchronous motor drives. The proposed method contributes to significantly reduce torque ripples experienced in conventional FS-MPTC by using two voltage vectors (VVs) in one sampling cycle. The duty ratio of active VV is determined based on PI controller, which equivalently adjusts the weighting between torque and flux control in FS-MPTC. The validity of the proposed method is verified through simulations.