  In this paper, an improved multi-step finite control set model predictive
current control (FCS-MPCC) strategy with speed loop disturbance compensation is
proposed for permanent magnet synchronous machine (PMSM) drives system. A
multi-step prediction mechanism is beneficial to significantly improve the
steady-state performance of the motor system. While 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 by developing a new multi-step prediction mechanism. Furthermore, in
order to improve the dynamic response of the system, a disturbance compensation
(DC) mechanism based on an extended state observer (ESO) is proposed to
estimate and compensate the total disturbance in the speed loop of the PMSM
system. Both simulation and experimental results validate the effectiveness of
the proposed control strategy.
