Speed control of an induction motor by using indirect vector control method ashutosh mishra1, prashant choudhary2 abstract the in this paper, an implementation of intelligent controller for speed control of an induction motor im using indirect vector control method has been developed and analyzed in detail. Vector control theory background the ac induction motor acim is the workhorse of industrial and residential motor applications due to its simple construction and durability. Speed control of an induction motor by using indirect vector. The content of this book is divided into three basic parts. Conference paper pdf available november 2009 with 268. Pdf performance analysis of indirect vector control of. Induction machine, vector control method, svpwm, picontroller, field oriented control, indirect field oriented control. Similar to indirect vector control, various controllers have been implemented on direct vector controlled induction motor drives also to improve the performance of the drive.
An3476, washing machine threephase acinduction direct. With the help of this control technique the induction motor can replace a separately excited dc motor. Thesis on vector control of induction motor vector control motor wikipedia vector control, also called fieldoriented control foc, is a variablefrequency drive vfd control method in which the stator currents of a threephase ac electric motor are identified as two orthogonal components that can be visualized with a vector. Indirect vector control of three phase induction motor. This paper presents the implementation of indirect vector control of three phase induction motor using hysteresis band pwm current control and synchronous current control in psim environment. This paper presents an implementation of adaptive sliding mode controller asmc based robust speed control strategy for indirect vector control ivc three phase induction motor im drive. The induction motors were characterized by complex, highly nonlinear and timevarying dynamics, and hence their promptness control is a stimulating problem in the engineering applications especially in high performance drive system. Indirect field oriented control for induction motor ieee. Speed control of induction motor using vector control. Indirect vector control of induction motor using fuzzy logic controller. Comparison of direct and indirect vector control of induction motor. The simulation model of the induction motor drive is developed using the principle of indirect foc.
The vector control technique decouples the two components of stator current space vector. Modeling and simulation of indirect field oriented control. The two components are defined in the synchronously rotating reference frame. It should be mentioned that the field orientation principle can be used in control not only of induction asynchronous motors, but of all kinds of synchronous motors as well. Parameter estimation and indirect vector control of ac. Parameter estimation and indirect vector control of ac induction motor.
The compensation is based on equivalent circuit parameters variation and indirect vector control. Vector control of an ac induction motor washing machine threephase ac induction direct vector control, rev. One called the direct or feedback method, and the other, the indirect or feed forward method. This drive features closedloop speed control based on the indirect or feedforward vector control method. The vector control of induction motors is one of the most suitable and popular speed control technique presently used. The analysis, design and simulation of the fuzzy logic controller for indirect vector control of induction motor are carried out based on fuzzy set theory. This paper introduces a smart speed control system for induction motor using. Implementation of 3phase induction motor through indirect. Keywords fig double cage induction motor, constant vf control, indirect vector control. Indirect field oriented control ifoc is known to produce high performance in induction motor im drives by decoupling rotor flux and torque producing current components of stator current. The schemes investigated are indirect vector control and direct torque control of induction motor which gives good dynamic behaviour. The paper presents a vector control model of induction machine with four parameters only. An induction motor is presented as an electromechanical power converter, and basic relations between the electrical, magnetic and mechanical quantities in the motor will be explained.
Speed control of an induction motor by using indirect. Indirect vector control of multi cage induction motor. These problems can be solved using vector control or field oriented control. The paper presents a fuzzy logic speed control system based on fuzzy logic approach for an indirect vector controlled induction motor drive for high performance. The indirect vector control in case of induction machines, the control is usually performed in the reference frame dq attached to the rotor flux space vector. Thesis on vector control of induction motor 876924. There are essentially two general methods of vector control. An intelligent speed controller design for indirect vector. Pdf comparative study of indirect vector control and. Variable frequency drives implement the scalar or vector control of an induction motor. Indirect field oriented control for induction motor drive using space. Indirect vector control of a variable frequency induction motor drive vcimd. Vector control, also called fieldoriented control foc, is a variablefrequency drive vfd control method in which the stator currents of a threephase ac electric motor are identified as two orthogonal components that can be visualized with a vector.
The induction motor mathematically modeled in the rotor flux reference frame is presented. Typical openloop rotor flux observers by using the voltage model, current model, and combined. Indirect field oriented control for induction motor drive. The indirect vector controlled induction motor drive involve decoupling of the stator current in to torque and flux producing components. The field orientation principle in control of induction motors. Vector control system for an induction motor with indirect rotor flux orientation 5 3. Srinu naik abstract vector control is becoming the industrial standard for induction motor control. Abstract vector control, also called fieldoriented control foc, is a variable frequency drive vfd control method in which the stator currents of a 3 phase induction motor are identified as two orthogonal components that can be visualized with a vector. Traditional indirect vector control system of induction motor introduces conventional pi regulator in outer speed loop. Pdf indirect vector control of induction motor researchgate. One component defines the magnetic flux of the motor, the other the torque.
Pdf simulation of fuzzy sliding mode controller for. The main advantage of this minimum number of parameters model consists in the measurements possibilities of them. This paper deals with the detailed comparative investigation of high performance control schemes of induction motor. Scalar control is suitable for application where the load is constant. Vector controlled induction motor drives the previous control strategies good steadystate but poor dynamic response oscillation resulted from the air gap flux vector control fieldoriented control is related to the phasor control of the rotor flux. Abstractvector control is becoming the industrial standard for induction motor control. Index termslinear induction motor, equivalent circuit. Direct vector control and indirect vector control are introduced as two techniques of the vector control for an induction motor. Vector control, also called fieldoriented control foc, is a variable frequency drive vfd control method in which the stator currents of a 3 phase induction motor are identified as two orthogonal components that can be visualized with a vector. Pdf speed control of induction motor drive based on. Comparison between direct and indirect field oriented.
Introduction synchronous rotation speed of the induction motor is determined by three phase electric grid frequency and the number of motor poles, i. The speed control loop outputs the reference electromagnetic torque and rotor flux of the machine. Flux estimation methods to obtain the rotor flux angle required for the vector control of an induction motor are examined. With scalar control, only the magnitude and frequency of the supply voltage are controlled without phase control absent feedback by rotor position. While the direct method is inherently the most desirable control scheme, it suffers. In this paper, an implementation of intelligent controller for speed control of an induction motor im using indirect vector control method has been developed and analyzed in detail. An908 using the dspic30f for vector control of an acim. Introduction induction machines with double cage rotor winding are commonly utilized in. Direct field oriented control of induction motor drive ieee xplore. Indirect vector control of a redundant linear induction motor for aircraft launch. Objectives a generalized indirect vector control formulation that allows for multiple, coupled stators does not exist in the literature. Pdf the paper emphasis a solution for induction motor speed control.
Introduction induction machines are largely used in industrial plants and are adequate for almost any kind of environment. These motors have no brushes to wear out or magnets to add to the cost. Comparison between direct and indirect field oriented control of. Characteristics of linear induction motor considering.
Performance analysis of three phase induction motor. The decoupling control between the rotor flux and the torque is no longer achieved in terms of stator current components this paper introduces a decoupled rotor flux and torque control based on. Simulation results have shown the algorithm had good performances. Because of the low maintenance and robustness induction motors have many applications in the industries. Speed control of induction motor drive based on indirect vector control using pi controller. The fieldoriented control induction motor drive block represents a standard vector or rotor fieldoriented control drive for induction motors. Vector controlled induction motor drive operates like a separately. Svpwm algorithm is used to control a voltage source inverter fed indirect vector controlled induction motor drive to have optimum use of the dc bus voltage and maximum output torque. Indirect vector control of induction motor alexandru onea1 vasile horga2 marcel ratoi2 1department of automatic control and technical informatics 2department of electric drives gh. The indirect vector controlled induction motor drive involves decoupling of the stator current in to torque and flux producing components. A particular control scheme among them can be chosen depending upon requirement of application.
Comparison between direct and indirect field oriented control of induction motor venu gopal b t research scholar, department of electrical engineering uvce, bangalore university, bengaluru abstract vector control, also called fieldoriented control foc, is a variable frequency drive vfd control method in which the stator currents of a 3. Pdf this paper presents an implementation of adaptive sliding mode controller asmc based robust speed control strategy for indirect vector control. Currently the use of threephase induction machines has been increased tremendously in industrial applications due to several methods available to control the speed and torque of the motor. Block diagram of indirect vector control of induction motor drive. This paper involves pid controller of driver and motors with fuzzy logic techniques. Vector controlled drive systems with the so called brushless d. Simulation of indirect field oriented control of induction. Induction motor drive using indirect vector control with.
In any machine drive system, current control directly influences both flux and torque developed directly. High performance drive a system employed for motion control using electric motor as a prime. In this paper, an indirect field oriented control ifoc method is proposed. Gopakumar, centre for electronics design and technology, iisc bangalore. Indirect field oriented control ifoc is known to produce high performance in induction motor im drives by decoupling rotor flux and torque producing. Indirect vector control of induction motor using fuzzy. The main effort is to replace dc motor by an induction motor and merge the advantages of both the motors together into variable speed brushless. The paper presents a vector control model of induction machine with. An intelligent speed controller design for indirect vector controlled induction motor drive system shaija p ja, asha elizabeth daniela aschool of engineering, cusat, kochi22, india abstract the aim of this paper is to present an indirect vector control technique rotor field oriented for a three phase induction motor. Thats why the implementation of vector control requires information on the modulus and the space currents of the induction machine are separated into flux and. Field oriented control or vector control vc techniques are being used extensively for the control of induction motor. In this chapter, the mathematical model of induction motor based on space vector theory and the principle of indirect foc are presented.
Speed control of vector controlled induction motors using. The indirect vector control of induction motor is the same as the direct vector control method but with a difference that the unit vectors are generated in an indirect. Fuzzy logic is based on the fuzzy logic set theory which contains variables having degree of membership from 0 to 1. This paper details the software implementation and comparison of a vector control scheme indirect field oriented control with scalar control scheme direct torque control for ac drive used for induction motors. Modern method of static frequency conversion has liberated the. Indirect vector control of a redundant linear induction. This technique allows a squirrel cage induction motor to be driven with high dynamic performance comparable to that of a dc motor. The vector control of induction motors is one of the most suitable and popular speed. The paper emphasis a solution for induction motor speed control. Comparison of direct and indirect vector control of. The different control schemes of induction motor drives are including scalar control, vector or field oriented control, direct torque control, and adaptive control etc. Indirect vector control of three phase induction motor using. Most of these applications need fast and smart speed control system. A novel adaptive pi based on fuzzy logic reasoning flr is presented in this paper for indirect vector control ivc three phase induction motor im.
The project is complete mathematical model of field orientation control foc induction motor is described and simulated in matlab for studies a 50 hp37kw, cage type induction motor has been considered. Basic scheme of field oriented control of induction motor. Pdf indirect vector control of a variable frequency induction. The previous control strategies good steadystate but poor. The proposed slidingmode controller is compared with pi controller with no load and various load condition. Pdf indirect vector control of induction motor using. Comparison study of vector control of induction motor using rotor. Pdf simulation of indirect vector control of three phase.
Their popularity is due to their high efficiency, reliability, low maintenance. Difference between direct and indirect vector control of. This paper proposes the implementation of 3phase induction motor through indirect vector controlled induction motor im drive involves decoupling of the stator current into torque and flux producing components of an induction motor. Lecture 35 vector control of induction motor youtube. Index termsinduction motor, vector control, speed control, ac motors. Comparison of direct and indirect vector control of induction motor b. The paper presents a slidingmode speed control system for an indirect vector controlled induction motor drive for high performance. Doublecage induction machine model, indirect vector control, constant vf control. The analysis, design and simulation of the slidingmode controller for indirect vector control induction motor are carried out. Indirect vector control of induction motor using sliding. Indirect vector controlled ivc induction motor drives used in high.
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