说明：  永磁同步电机直接转矩控制，通过直接转矩控制，采用SVPWM技术，对永磁同步电机的转矩与转速进控制，以达到预期的转速与转矩。
(Permanent magnet synchronous motor direct torque control, through direct torque control, using SVPWM technology, the torque and speed of the permanent magnet synchronous motor are controlled to achieve the expected speed and torque.)