An Improved Predictive Current Control Scheme for Five-Phase Flux-Switching Permanent Magnet Machine With Disturbance Observer

To improve anti-disturbance performance of a five-phase flux-switching permanent magnet (FSPM) motor drive, a robust deadbeat model predictive current control (RDB-MPCC) method with disturbance observer is proposed in this paper. First, parameter sensitivity of the traditional deadbeat model predictive current control (DB-MPCC) method and the influence of parameter mismatches on system performance are theoretically analyzed. Secondly, the observer system is designed based on the simplified gain matrix. A specific and practical observer gain design scheme is proposed, which can realize accurate observation of disturbances. The proposed RDB-MPCC method can eliminate static current error caused by parameter deviations as well as improve the stability of the system. Finally, a five-phase FSPM prototype motor is used to verify the effectiveness of the proposed RDB-MPCC method.