A Weighting-Factorless Predictive Torque Control Method for Open-End Winding PMSM with Common DC Bus

Abstract The weighting factors (WFs) of conventional predictive torque control (PTC) are difficult to tune, which limits its practical application. When the PTC is applied open-end winding permanent magnet synchronous motor (OEW-PMSM) with a common DC bus, there three different units variables that require prediction and control. Therefore, it necessary introduce two WFs construct cost function (CF), increases difficulty realizing strategy. Sequential adopts idea hierarchical optimization avoid introduction directly. In this paper, sequential structure constructed WFs. Then, number elements in finite set (FCS) each layer optimized reduce zero sequences current (ZSC) ripple, so as achieve better effect. Finally, effectiveness proposed strategy proved by simulation.