Disturbance-Deadbeat Inductance Observer Based Current Predictive Control for SPMSM Drives

In order to improve the parameter robustness of the model predictive control (MPC), a novel current predictive control method is proposed here. Firstly, the incremental prediction model of the permanent-magnet synchronous motor is used to predict the current of the next instant, due to the advantage of without permanent-magnetic flux linkage parameter. Furthermore, the disturbance-deadbeat inductance observer (DDIO) is proposed, in which the parameter disturbance at the next instant is predicted and is used as the reference to extracted inductance information. Finally, a DDIO + MPC method is developed to improve the parameter sensitivity of the predictive control. The simulation and experimental results validate the effectiveness of the proposed method.