In this thesis, a novel boost-type DC/AC inverter for PMSM (Permanent Magnet Synchronous Motors) drive is proposed. By generalized zero vector control, the proposed inverter has higher output voltage and single-stage control. Besides, Using control mode, back EMF of PMSM can be detected to obtain the phase and magnitude of air-gap flux. Without complicated transformation, the maximum torque control can be achieved by back EMF of PMSM and the signals of encoder. Finally, the proposed some experimental results are compared with the proposed theory for verification.