What is DTC control in drive?
High-performance AC drives from ABB offer an innovative technology called direct torque control (DTC). As the name suggests, the method controls motor flux and torque directly, instead of trying to control motor currents indirectly like AC vector drives and DC drives.
What is the basic principle of direct torque control method?
Direct Torque Control (DTC) is an optimised AC drives control principle where inverter switching directly controls the motor variables: flux and torque. The measured input values to the DTC control are motor current and voltage. The voltage is defined from the DC-bus voltage and inverter switch positions.
Who invented DTC?
Later in the 1980s, a new control method for induction machines was introduced: The direct torque control (DTC) method. It was proposed by Takahashi and Depenbrock [1, 2].
What are the advantages of vector control?
Vector Control offers the advantages of better speed holding, better response to sudden load changes as well as greatly improved torque at low speeds. Motors often run more efficiently – and therefore cooler.
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 difference between speed control and torque control?
A speed controller can control speed in either a clockwise direction or a counterclockwise direction by applying a positive or negative voltage. This is referred to as a two quadrant controller; clockwise torque in a clockwise direction and counterclockwise torque in a counterclockwise direction.
What is Torque Control?
Torque Control and Related Terms Torque control then is simply controlling the amount of torque placed on a fastener without damaging it by over-tightening. This slip means the wrench stops putting any more torque on the fastener and it has reached its optimal torque.
What is torque control?
What is Direct Torque Control for PMSM?
Abstract: Direct torque control (DTC) is a method to control motor with utilizing torque and flux. Base on the analysis of basic DTC of permanent magnet synchronous motor (PMSM), a new DTC technology based on flux error vector (FEV-DTC) is proposed to reduce torque and flux ripples in this paper.
What is the difference between scalar control and vector control?
Scalar control is a relatively simple method. The purpose of the technique is to control the magnitude of the chosen control quantities. The vector control technique works with vector quantities, controlling the desired values by using space phasors which contain all the three phase quantities in one phasor.
What is DTC technology?
DTC technology also provides other benefits ranging up to system-level features. High-performance AC drives from ABB offer an innovative technology called direct torque control (DTC). As the name suggests, the method controls motor flux and torque directly, instead of trying to control motor currents indirectly like AC vector drives and DC drives.
What is the method of controlling torque?
The controlling torque in indicating instruments may be provided by one of the following two methods: Spring control. Gravity control. This is the most common method of providing controlling torque, in electrical instruments.
What is torque controller?
The Torque Control System is a plug and play, closed loop, CNC, measure and control system. The system is composed of an AC -Servomotor with integrated overload-protected torque transducer. This allows to link the NC-controlled rotary-motion with monitoring of the torque / angel of rotation process.