Abstract: The direction of output voltage vector is limited and the current ripples is large in a single sampling period,when the permanent magnet synchronous motor（PMSM）adopts two-vector model predictive current control strategy. A novel three-vector model predictive current control strategy was proposed in this paper. The first optimal voltage vector was selected based on 6 times on-line current prediction. When selecting the second optimal voltage vector, it only needed to judge the sector number of the error vector between the predictive current value produced by the first optimal voltage vector and the reference current value, and its selection principle was to reduce the error. Finally, the zero vector was introduced to adjust the amplitude of the output voltage vector.So the output voltage vector direction and amplitude could be adjusted. The basic voltage vectors actuation durations were calculated by the current deadbeat control principle of d and q axis. Experimental results show that the proposed method can effectively reduce the current ripples and has a good dynamic property and steady state behavior.