A Finite Control Set Model Predictive Current Control Scheme for Five-phase PMSMs Based on Optimized Duty Ratio

Finite control set model predictive current control (FCS-MPCC) scheme is easy to realize and has fast dynamic response, so it’s widely employed in machine drive applications. However, the low-order harmonics in stator currents, heavy computation burden and the utilization improvement of dc-link voltage are the key issues of FCS-MPCC schemes for multiphase machine drives. Thus, this paper proposes a FCS-MPCC scheme with the optimized duty ratio (MPCC-ODR) for five-phase machine drives. Simulations and experimental results have verified that the proposed MPCC-ODR scheme can suppress low-order harmonics, improve the utilization of dc-link voltage and reduce computation complexity.