In　this　paper,　a　fault-tolerant　predictive　current　control　strategy　for　a　one-phase　open-circuit　dual　three-phase　permanent　magnet　synchronous　motor　system　with　harmonic　suppression　is　proposed,　which　is　capable　of　effectively　controlling　the　harmonics　induced　by　a　non-sinusoidal　back　electromotive　force　under　faulty　operating　conditions.　Firstly,　a　fully　decoupled　model　for　the　faulty　motor　is　established　based　on　the　theory　of　double　transformation,　which　solves　the　problem　of　strong　coupling　between　the　direct-axis　and　quadrature-axis　voltages.　Moreover,　the　distribution　of　space　voltage　vectors　for　a　single-phase　open-circuit　system　is　provided　and　harmonic-free　virtual　vectors　with　the　largest　possible　amplitude　are　constructed　by　recombining　the　fundamental　voltage　vectors.　Thus,　the　proposed　scheme　can　effectively　eliminate　harmonics　while　maintaining　high　utilization　of　DC　bus　voltage.　Simulation　results　verify　the　effectiveness　of　the　scheme.　©　2024　IEEE.