In　order　to　improve　dynamic　performance　and　reduce　switching　loss　of　permanent　magnet　synchronous　motor　system　in　electric　vehicle　drive,　a　self-adjusting　direct　torque　control　strategy　is　proposed.　Based　on　the　analyses　of　zero　voltage　vector　in　DTC,　fuzzy　control　rules　with　zero　voltage　vector　are　presented　to　acquire　both　quick　dynamic　torque　response　of　PMSM　and　reduced　switching　loss　of　inverter.　Simulation　and　experiment　results　prove　the　proposed　strategy.　©　2008　IEEE.