This paper presents a practical implementation for direct torque control of induction motor drive. Control system experiment is proposed using Digital Signal Processor. This control scheme directly determines the switching states of the inverter and gives optimal characteristics for stator flux and torque control. A simple switching pattern for direct torque control algorithm for induction moto...

i TABLE OF CONTENTS ii LIST OF SYMBOLS iv LIST OF FIGURES vi

A zero-voltage transition (ZVT) soft-switching inverter for an induction motor drive is developed. The proposed soft-switchng inverter is formed from the traditional pulse-wi dth modulated (PWM) inverter by simply augmenting with auxiliary resonant circuits, and the soft switching is acheved through applying PWM switching control signals with suitable delays for the main and auxiliary switches....

The paper presents an estimation method for the electromagnetic and mechanical parameters of squirrel cage induction motor. The main result consists in the use of an improved dynamic model that allows also the estimation of the iron loss. The estimated parameters are obtained with accuracy higher than the one from the classical tests. The parameters can be used in the implementation of control ...

This paper proposes direct torque control of induction motor simulation using conventional method. Direct Torque Control (DTC) is a control technique used in AC drive systems to obtain high performance torque control and thereby controlling the speed of induction motor. The principle is based on simultaneous decoupling of stator flux and electromagnetic torque of AC drive system. DTC drives use...

In this paper represent the simulation analysis of space vector pulse width modulated(SVPWM) inverter fed Induction motor drives. The main objective of this paper is analysis of Induction motor with SVPWM fed inverter and harmonic analysis of voltages & current. for control of IM number of Pulse width modulation (PWM) schemes are used to for variable voltage and frequency supply. The most commo...

In this paper, an adaptive backstepping controller is proposed for the position tracking of a mechanical system driven by an induction motor (IM). The mechanical system is a single link fixed on the shaft of the induction motor. The backstepping methodology provides a simpler design procedure for a adaptive control scheme than the model reference adaptive control method, which is demonstrated i...

This paper presents the modified integrator which we can use in the controlling scheme of an induction motor (IM). The modification tends to some advancement in direct torque control of induction motor. The undesirable variations which occur in the form of offset, gain error, etc can be eliminate by means of the involvement of the new integrator in the direct torque and flux control (DTFC) meth...

Indirect field orientation (IFO) induction machine drives are increasingly employed in industrial drive systems, but the drive performance is often degrades. Motor works on best performance at certain voltage and frequency for certain loads. In this paper artificial neural network is used to predict the operating voltage and frequency when the load torque and speed going changed so motor effici...

An important factor in industrial progress during the past five decades has been the increasing sophistication of factory automation which has improved productivity manyfold. Manufacturing lines typically involve a variety of variable speed motor drives which serve to power conveyor belts, robot arms, overhead cranes, steel process lines, paper mills, and plastic and fiber processing lines to n...