Disturbance compensation-based predictive current control for PMSM

A deadbeat predictive current control (DPCC) algorithm for PMSM drive system basing on disturbance compensation is proposed in this paper. First, a stator current and disturbance observer (SCDO) is presented to simultaneously predict future value of stator current and track system disturbance caused by parameter mismatch in real time. Based on this SCDO, a composite control method combining the DPCC part and current prediction and feedforward compensation part based on SCDO, called DPCC+SCDO method, is developed. Experimental results show the validity of the proposed approach.