Direct torque control method for speed control of induction motor pdf

The objective is to make a critical analysis of these methods in terms of ripples. The torque and flux references are tracked using hysteresis controllers and a switching table implemented with lut is used for selecting the optimum converters output. In scalar control, which is based on relationships valid in steady state, only the magnitude and frequency of. An efficient method of induction motor control is the direct torque control dtc. Pdf direct torque control for induction motor using. The direct torque method performs very well even without speed sensors. Pdf design of direct torque controller of induction. This method is based on avoiding the electromagnetic transients in the stator. Speedsensorless dtc of a matrix converter fed induction motor using an. Direct torque control of induction motor department of electrical engineering, college of engineering, trivandrum 2.

Pdf high performance drives with induction machines require use of vector control. Stator voltage control of an induction motor circuit globe. Introduction industrial loads require operation at wide range of speeds. Direct torque control dtc is one method used in variable frequency drives to control the. In this project, a dtc model has been developed and tested using a matlabsimulink package. Field oriented control foc and direct torque accepted 29 january 2014 control dtc are the two strategies implemented to the imd for speed control. The purpose of the scalar control technique is to control the magnitude of the chosen. The actual speed of induction motor is compared with reference speed and speed error is. Improvements in direct torque control of induction motor for wide. Induction machine, direct torque control dtc, fuzzy logic fl. The driving force behind abbs allcompatible drives architecture pdf.

Induction motor drive, modeling of induction motor, vector control, field orient control, direct torque control, and fuzzy applications. Over the years direct torque control dtc of induction motor emerged as an alternative to field oriented. Direct torque control of induction motor using svm. Pdf direct torque control strategy of induction motors.

The chapter explains direct torque control dtc technique, direct self control technique, and an enhanced version of the dtc scheme, employing the spacevector pulse width. Index termsdirect torque control, induction motor control, inverter, minimum. Pdf direct torque control of induction motor drives. Direct torque control of inverterfed induction machine allows high dynamic performance by means of very simple control schemes.

Stator voltage control of an induction motor stator voltage control is a method used to control the speed of an induction motor. Introduction the history of electrical motors goes back as far as 1820, when hans christian oersted discovered the magnetic effect of an electric current. It offers a simple control structure, fast response, and robust operation 35. The structure is very simple and it is normally used without speed feedback. The control methods for induction motors can be divided into two parts.

Practically, induction motor doesnt work at its rated speed. Direct torque control dtc is an emerging technique for controlling pwm inverterfed induction motor im drives. It allows the precise and quick control of the im flux and torque without calling. Direct torque control dtc for motor drive applications has been well established in both academia and industry.

The main advantage of the method for direct torque control of induction machines is its simplicity and. Download pdf protection and control of modern power systems. Abstract direct torque control dtc is a preferred approach for its fast torque. This chapter presents control methods for highperformance adjustable speed drives with induction motors by direct selection of consecutive states of the inverter. Pdf methods for direct torque control of induction machines. Pdf direct torque control of induction motor drives researchgate. Pdf direct torque control of induction motor drives a study. Pdf direct torque control dtc is an emerging technique for controlling pwm. Speed control of induction motor using vector control. Scalar control is relatively simple method compared to vector control.