Comparative study on vector control and direct torque control based on permanent magnet synchronous motor
Due to the relative lack of comparison between the advantages and disadvantages of traditional direct torque control(DTC)and field oriented control(FOC),the comparison between vector control and direct torque control was carried out from three perspectives:basic principle,logic block diagram and result analysis.Focusing on the analysis of the decoupling idea of FOC and the stator flux orientation of DTC,the electromagnetic torque and current waveforms of the two were analyzed by unifying the motor parameters with the control variable method.The results showed that the pulsation of the traditional DTC was greater than that of the FOC,but in terms of overshoot,the traditional DTC had more advantages.
permanent magnet synchronous motorvector controldirect torque control
NETL
NSTL
万方数据
维普
