Direct Torque Control (DTC) is using ...Question 8Answera.Rotating reference frame (d,q)b.Stationary reference frame (α,β)c.Three-phase reference frame (a,b,c)

Direct Torque Control (DTC) is an advanced technique used in the control of electrical drives, particularly in synchronous and induction motors. It operates without the need for a rotating reference frame like in vector control methods, which rely on the transformation of three-phase currents into a two-axis system.

Answer Explanation

1. Rotating reference frame (d,q): This is typically used in Field Oriented Control (FOC) systems to decouple the torque and flux controls, not directly in DTC.

2. Stationary reference frame (α,β): DTC can be implemented in stationary reference frames using stator current components, and it's closer to the concept of Direct Torque Control.

3. Three-phase reference frame (a,b,c): DTC fundamentally operates in the natural three-phase system, utilizing the three-phase current measurements to control torque and flux directly.

Final Answer

The correct answer is b. Stationary reference frame (α,β). Direct Torque Control uses a stationary reference frame to regulate motor torque and flux.