Abstract: In order to mitigate the high common-mode voltage (CMV) problem in dual three-phase permanent magnet synchronous motor (PMSM), we propose a finite control set model predictive current control (FCS-MPCC) strategy, which is based on an expanded control set and optimized modulation of the duty cycle to eliminate CMV. First, we establish a control set of zero common-mode voltage (CMV) vectors. To mitigate harmonic currents, we generate six fundamental virtual voltage vectors through a virtual voltage vector synthesis technique. Furthermore, to minimize the fundamental plane current tracking error, we synthesize six additional virtual voltage vectors with new orientations, forming an expanded control set comprising 12 virtual voltage vectors. Second, we employ a sawtooth carrier modulation scheme, achieving fixed switching frequency by inserting zero voltage vectors at the beginning, middle, and end of the switching sequence. Finally, simulation comparisons with existing FCS-MPCC methods for CMV suppression in a dual three-phase PMSM validate the proposed strategy’s superiority in terms of CMV suppression and current tracking accuracy.