Aimed　at　the　problems　of　unbalanced　capacitor　neutral-point　voltage　and　high　common-mode　voltage　in　a　permanent　magnet　synchronous　motor　drive　system　powered　by　a　T-type　three-level　inverter,　a　model　predictive　instantaneous　torque　control　(MPITC)　strategy　based　on　finite　voltage　vector　set　optimization　is　proposed.　First,　in　view　of　the　influence　of　voltage　vectors　on　the　neutral-point　voltage,　only　zero,　small　and　large　vectors　are　selected　to　participate　in　MPITC.　Second,　according　to　the　relationship　between　the　switching　states　and　common-mode　voltage,　it　is　confirmed　that　13　low　common-mode　voltage　vectors　participate　in　the　control.　To　improve　the　operation　performance　of　the　motor,　the　long　vector　synthetic　virtual　voltage　vector　is　used　to　replace　the　medium　vector　to　participate　in　the　model　predictive　control.　Finally,　according　to　the　neutral-point　potential　and　the　motor　current　direction,　the　voltage　vector　which　is　favorable　for　maintaining　the　neutral-point　voltage　balance　is　selected　from　19　voltage　vectors　as　the　preselected　vector　set.　Experimental　results　show　that　the　proposed　control　strategy　can　effectively　reduce　the　electromagnetic　torque,　flux　linkage　pulsation　and　common-mode　voltage　amplitude,　and　the　neutral-point　voltage　achieves　balanced　control.　©　2025　Editorial　Department　of　Journal　of　Power　Supply.　All　rights　reserved.