Improved Multi-step FCS-MPCC with Disturbance Compensation for PMSM Drives

In this paper, an improved multi-step finite control set model predictive current control (FCS-MPCC) strategy with speed loop disturbance compensation for permanent magnet synchronous machine (PMSM) drives system is proposed. In order to improve the steady-state performance of the system, multi-step prediction has been proposed in FCS-MPCC strategy. However, because the conventional multi-step prediction has the defect of heavy computational burden, an improved multi-step finite control set model predictive current control (IM MPCC) strategy is proposed. Furthermore, in order to improve the dynamic response of the system, a disturbance compensation (DC) mechanism based on extended state observer (ESO) is added to estimate and compensate the total disturbance in the speed loop for PMSM system. The simulation results validate the effectiveness of the proposed control strategy.