Number 3 –> What is direct torque control (DTC) for AC induction motors?

Vector control (also referred to as field oriented control, or FOC) controls the magnetizing and the torque-producing components of the stator current independently to control both motor speed and torque. Another control method, known as direct torque control (DTC), is similar to field oriented control, in that it decouples torque and flux and controls them independently. But DTC controls motor torque directly, without a modulator, so torque response is much faster.

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