On　the　one　hand,　with　the　use　of　direct　torque　control　(DTC)　for　a　six-phase　permanent　magnet　synchronous　motor　(PMSM)　and　a　three-phase　PMSM　series-connected　system　supplied　by　a　six-phase　inverter,　it　is　possible　to　realize　fast　torque　control　for　two　PMSMs.　On　the　other　hand,　because　the　number　of　inverter　output　voltage　vectors　(VVs)　is　increased　to　64,　it　is　difficult　to　divide　sectors　for　traditional　switching　table　DTC　(ST-DTC).　Furthermore,　it　is　difficult　to　choose　an　optimal　switching　vector　to　reduce　torque　and　flux　ripples　of　two　PMSMs　in　ST-DTC.　A　predictive　control　strategy　of　torque　and　stator　flux　is　introduced　into　a　two-PMSM　series-connection　DTC　system,　including　winding　fault,　in　this　paper.　Based　on　the　principle　of　minimum　errors　of　torque　and　stator　flux　amplitude　and　minimum　zero-sequence　current,　an　optimal　VV　is　predicted.　In　order　to　realize　uninterrupted　torque　control　before　and　after　open-phase　fault,　open-phase　winding　flux　is　considered　in　stator　flux,　and　the　inverter　VV　considering　open-phase　voltage　is　constructed　in　an　open-phase　control　strategy.　The　experimental　results　show　that　the　steady-state　torque　and　stator　flux　ripples　of　a　series-connected　drive　system　are　greatly　reduced,　and　the　drive　system　can　operate　without　interruption　from　failure-free　to　failure　operation.　©　1982-2012　IEEE.