What is direct torque control of induction motor?

Direct torque control (DTC) is an emerging technique for controlling PWM inverter-fed induction motor (IM) drives. It allows the precise and quick control of the IM flux and torque without calling for complex control algorithms. In principle, moreover, it requires only the knowledge of the stator resistance.

What is the basic principle of direct torque control method explain with block diagram?

Direct torque control (DTC) is one method used in variable-frequency drives to control the torque (and thus finally the speed) of three-phase AC electric motors. This involves calculating an estimate of the motor’s magnetic flux and torque based on the measured voltage and current of the motor.

How do you control speed and torque of an induction motor?

Speed Control of Three Phase Induction Motor

V / f control or frequency control.
Changing the number of stator poles.
Controlling supply voltage.
Adding rheostat in the stator circuit.

What is meant by torque control?

A control method that enables the torque generated by a motor to be equal to a torque reference input. Torque control is suitable for tension control of a winding machine and other applications.

Why do we need torque control?

The reliability of the fastener depends on how well the tightening torque is controlled. When the bolt is torqued properly, it remains under constant stress and is immune from fatigue.

What is the difference between vector control and direct torque control?

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. But DTC controls motor torque directly, without a modulator, so torque response is much faster.

What is torque control?

Torque Control and Related Terms Torque is the force applied to something to make it spin (rotate) in machinery. Torque control then is simply controlling the amount of torque placed on a fastener without damaging it by over-tightening. Prevailing Torque. Measure of a screw or nuts frictional resistance to rotation.

What are the different methods of speed control in induction motor?

Speed Control Methods of Induction Motor:

Control From Stator Side:
Control From Rotor Side:
Speed Control by frequency variation:
Speed Control By Pole Changing:
Speed control by varying Supply voltage:
Speed control by varying Rotor Resistance:
Speed control by injected EMF:
Speed control by Cascade Connection:

What are the various methods of speed control of 3phase induction motor?

Different speed control methods of 3 phase induction motor

V / f (variable frequency) control or frequency control.
changing the number of stator poles.
By Changing The Applied Voltage.
Rotor resistance control.
Cascade control of two motors.
EMF Injecting in rotor circuit.

What is direct torque controlled induction motor?

K.B.Mohanty in 2009 A Direct Torque Controlled A strategy of variable duty ratio control Induction Motor with scheme technique minimizes torque and Variable Hysteresis Band. current ripples, improves torque response, and reduces switching losses in spite of its simplicity.

What is Direct Torque Control (DTC)?

What is the best induction motor control scheme for electric vehicle?

M.vasudevan and New Direct Torque Control Field Oriented Control, Direct Torque Dr. R.Arumugan in 2004 Scheme of Induction Motor Control (DTC), and DTC using Space for Electric vehicle. Vector Modulation are investigated. DTC using Space vector modulation is found to be the best scheme for this application.

Is there a speed sensorless rotor flux oriented torque control?

Using MATLAB/SIMULINK software, simulation has been made to illustrate this strategy and compare the results of two ways. This paper describes a speed sensorless rotor flux oriented torque control of induction machines which utilises stator flux components as control variables.