A Sliding Mode Velocity Regulator of a PMSM using a Finite-Control-Set Model Predictive Current Control for a Household Appliance

This paper proposes a speed control approach for a Permanent Magnet Synchronous Motor (PMSM) based on the finite control set model predictive control (FCS-MPC) strategy. It utilizes a cascaded control scheme comprising an inner FCS-MPC current control loop and an outer Sliding Mode Control (SMC) loop. PMSMs are extensively used in industry, and FCS-MPC has been developed for current control due to its fast dynamic response, capability to enforce constraints, and potential elimination of a modulator. Additionally, SMC has gained recognition as an effective approach for controlling PMSMs, thanks to its robustness against model uncertainties and disturbances. The proposed approach, when compared with the conventional PI cascaded control usually implemented by Whirlpool on domestic machines, has demonstrated a noticeable improvement in terms of control performances and robustness.