What is direct torque control or DTC method?

DTC is used for efficient control of the torque and flux without varying the motor parameters and load value. The flux and torque can be directly controlled by the inverter voltage vector in DTC. It can be concluded that DTC can be applied for the PMSM and is useful for a wide range of speeds. Applications that require good dynamic performance demand DTC as it has a greater advantage over other control methods because of its property of fast torque response. For the sake of increase of the performance indices, the control period must be as short as possible. It is also practical for the sensitivity to keep the DC voltage in a certain limiting value.