Abstract
An improved robust predictive current control algorithm with observation compensation of current and disturbance is proposed in this paper. Theoretically, the predictive current control with robustness for permanent magnet synchronous motor (PMSM) possesses excellent control performance. However, the problems of discrete sampling delay and time-varying electromagnetic parameters in practical systems seriously degrade the control quality of model-based predictive current controller. A Luenberger state observer is designed to observe and compensate the stator current error and parameter disturbances, and improve the conventional deadbeat predictive current control. The effectiveness of the proposed algorithm has been verified by the simulation result.
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