A Novel Finite-Control-Set Model-Free Predictive Current Control Incorporating Event Triggering Mechanism for PMSM Drives

Abstract

This paper proposes a novel finite-control-set model-free predictive current control (FCS-MFPCC) for permanent magnet synchronous machine (PMSM) drives. Different to the existing FCS-MFPCC methods, the proposed method is designed based on the sliding-mode (SM) control theory, exhibiting the merits of parameter-independence and reduced computation burden. Meanwhile, there are no tuning coefficients in the proposed method, and the information of dc-link voltage is unconcerned. Furthermore, the event triggering (ET) mechanism is introduced to the proposed FCS-MFPCC, and a combined triggering condition is designed. In this way, not only the current errors can be regulated within a preset range but also the SM existence condition can be maintained anytime. Besides, the delay compensation is also considered for the proposed method. Finally, the simulated and experimental results based on a PMSM test rig are given to validate the effectiveness and superiority of the proposed method.