Speed control of induction motor is possible in two sides. Check out macbook pro, imac pro, macbook air, imac, and more. Full form kit includes case, doublesided silkscreened pcb, heatsink, cooling fan, hardware and electronics including parts from revised article in. The induction motor is made up of the stator, or stationary windings, and the rotor.
If the emf in the rotor of an 8 poles induction motor has a frequency of 1. The induction motor is also called asynchronous motor. Calculating required start current for new or existing ac induction motor installations. Synchronous speed means the speed of the rotating magnetic field in the stator. Speed control of a three phase induction motor using field oriented control eng. Speed of a dc shunt motor can be varied very easily with good efficiency, but in case of induction motors, speed reduction is accompanied by a corresponding loss of efficiency and poor power factor.
Ppt induction motor powerpoint presentation free to. The approach is relatively easy as far as the power circuit and control circuit are concerned. Methods of speed control of induction motor electrical. Speed control of single phase induction motor using ac. High performance speed sensorless control of threephase. Direct torque control method is one of the best control strategies which allow a torque control in steady state and transient operation of induction motor. Speed control of induction motor using triac 37 fig. Speed control of 3 phase induction motor free download as powerpoint presentation. These are also called as asynchronous motors, because an induction motor always runs at a speed lower than synchronous speed.
To increase its performance, this paper presents a modified method for speed controller of an indirect vectorcontrolled induction motor drive using. Torque produced by the rotor varies from stationary to full running speed. These strategies are known as extinction angle control eac, modified phase angle control mpac, and symmetrical angle control sac. The speed control of induction motor at lower cost and its efficient performance is discussed. Speed control of dc motor by using pwm technique project.
Speed control of 3 phase induction motor programmable. An introduction there are various methods for the speed control of an induction motor. Keywords cycloconverter, split phase induction motor i. Speed control of an induction motor there is a various method of speed control of an induction motor. Control of induction motors by using programmable logic. Single phase induction motor speed control this project is designed to control the speed of a singlephase induction motor by using operating knob. In this system, the scalar control vhz of induction motor experiments with and explores the use of speed control. Induction motor seminar ppt, pdf report study mafia. Speed control of a three phase induction motor using field. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from.
Pdf speed control of induction motor using foc method. The speed of a pair of slipring motors can be controlled by a cascade connection, or concatenation. Induction motors are widely used electrical motors due to their reliability, low cost and robustness. Ppt presentation on speed control of induction motor nilesh. Cycloconverters are used in very large variable frequency drives with ratings from few. By varying the frequency, the speed of the motor can be varied. These techniques depend on varying the stator ac voltage to control the speed of threephase induction motor. Motorcad is the worldleading dedicated electric motor design software package for the multiphysics simulation of electrical machines across the full torquespeed range. The operating point is the intersection of the two characteristics and we can fix for a given load and motor parameters. Simulation diagram this is the simulation diagram for induction motor. Ppt induction motor speed control powerpoint presentation, free. Speed control at the rotor side we can change the speed at the rotor by,by adding some external resistance in the rotor circuitby cascade connection of the motor. Speed sensorless control of induction motor using model reference adaptive system. How to control the speed of an induction motor quora.
Developed in 1998, motorcad is used by major motor manufacturers and universities worldwide. Induction motor is a device which converts electrical energy into mechanical energy. This paper contains the description about the design, construction and implementation of the speed control circuit for induction motor. This paper present the speed control of single phase induction motor using arduino with the controlling objectives pwm and spwm. From the equations of park of the machine we draw the. Induction motor speed control powerpoint ppt presentation. Speed control of three phase induction motor ppt play ppt. In this paper, speed control of induction motor using cycloconverter is presented. Motorcad enables design engineers to evaluate motor topologies and concepts. Synchronous reluctance machine synrm in variable speed. Therefore, by varying the voltage and frequency by the same ratio, flux and hence, the torque can be kept constant throughout the speed range. On the input side, voltage doublers are used and on the output side an hbridge, or 2phase inverter, is used as shown in figure 2. In this way, the slip power of main motor is fed to the auxiliary induction motor at a frequency of f 2 s 1 f 1 let us now assume that p 1, p 2 and s 1, s 2 be the number of poles and slips respectively. Ahuja speed control of induction motor using vector or field oriented control international journal.
A theoretical background on scalar motor control principle. Induction motors are the most commonly used motors in many applications. Speed control kit for induction motors jaycar electronics. Introduction speed control of induction motor is necessary in industrial applications. Speed control of induction motor using pi and pid controller. Application circuit to control the speed of single phase induction motor. Pdf speed sensorless control of induction motor using model. There are more than one methods to control the speed of induction motor, you can choose one depending on your resources, efficiency required etc. The operating point is the intersection of the two characteristics and we can fix for a. Parameter symbol value 1 supply frequency f 50 hz 2 voltage v 400 v 3 stator resistance r s 1. The speed of a threephase induction motor driving a given load is determined by matching the torquespeed characteristics of the motor and load, as shown in fig. The user can quickly start evaluating the performance of the vhz system with this method. A variable frequency drive vfd is used to control the speed of motor with the primary voltage control method.
The devicenet node address mac id and data rate are selected using. Speed control of induction motor detailed explanation. In the reference 3 different types of pwm strategies have been used for speed control of induction motor drive. Variable frequency drive for induction motor elprocus. Generally, it is known as the asynchronous motor because its running speed is less than its synchronous speed. Also the implementation of a hardware and software for speed control and protection with the result obtained from the test on induction motor performance is provided and this idea presents a design and implementation of a monitoring and control system for the three phase induction motor based on programmable logic controller plc. It certainly leads to the best performance and high efficiency of the induction motor.
Direct torque control method made the motor more accurate. Induction motor theory jerry bednarczyk, pe course content introduction the ac induction motor is well suited to applications requiring constant speed operation. Introduction types of electrical machines types of 3ph induction motor basic principle working principle compnents of induction motor application comparision between 1ph i. Speed control of three phase induction motor electrical4u. It is an ac motor in which current is induced in the rotor winding by the magnetic field of the stator winding, by electromagnetic induction. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. There basically 2 types of induction motor depending upon the type. Figure 3 shows the relation between the voltage and.
As a result of using vfd, large amount of energy is saved by reducing sudden jerks at the start of the motor. The most popular type is the 3phase, squirrelcage ac induction motor. There are several methods for the speed control of induction motor. Generally, an ebook can be downloaded in five minutes or less. Control of induction motor drive using artificial neural. The project pwm fed speed control of induction motor using pc is implemented successfully by using 16f877a pic microcontroller. Ac induction motor is a special type of electric motor having its own typical characteristics and performance in terms of starting, speed control, protections, and so on. Speed control of induction motor by variable frequency control. The central constructivist of this paper is to accrue the performance of speed sensorless control of three phase induction motor. The speed of a threephase induction motor driving a given load is determined by matching the torque speed characteristics of the motor and load, as shown in fig. In general, the induction motor is cheaper and easier to maintain compared to other alternatives. Some of the advantages like low cost, rugged design less complex, and easy to maintain ac motors results in many of the industrial operations are performed with the use of ac drives than dc drives. Speed control of induction motor by using cycloconverter. Hi all, so im working on a project titled controlling the speed of a single phase induction motor.
Top 7 mistakes newbies make going solar avoid these for effective power harvesting from the sun duration. Speed control of induction motor using cycloconverter. However, induction motors do not inherently have the capability of variable speed of operation. The rotor of one motor is connected to the stator of the other.
We can change the speed at the stator by, changing the supply frequency, changing the supply voltage and changing the number of stator poles. An induction motor can be defined as the ac electric motor device in which a power source fed by the alternating current with the help of a primary winding. Triac as induction motor speed controller prof abhijit kalbande1a, sapana rathod2a a assistant professor 1,p. Ppt presentation on speed control of induction motor. The torque developed in this method is proportional to the square of the supply voltage.
Winner of the standing ovation award for best powerpoint templates from presentations magazine. Parameters used supply rms voltage 110 v frequency of sin wave 50hz power. Then for the main motor, synchronous speed is 120f 1 p 1. Synrm and induction machine im, a new operating diagram of the synrm, different. From the equation 1 it is clear that the motor speed can be changed by a change in frequency f, a number of poles p, and slip s. Chapter 3 induction motor and different speed control methods page no 3. A three phase induction motor is basically a constant speed motor so its somewhat difficult to control its speed. Free download induction motor seminar ppt, pdf report. Speed control of three phase induction motor ppt download. An introduction to an evaluation of the different control strategies in. Speed control of a three phase alternating current induction motor. Speed control of induction motors linkedin slideshare. An843, speed control of 3phase induction motor using.
The different methods of speed control of im can be broadly classified into scalar and vector control methods. Before discussing the methods to control the speed of three phase induction motor one should know the basic formulas of speed and torque of three phase. The induction motor drive is a dynamic nonlinear system with uncertainty in the machine parameters. While researching on the internet i came across this one circuit that proposes a model that uses a microcontroller and a triac circuit and a. For professionals ready to push their creativity, these industryleading apps offer maximum control over editing, processing, and output of. This method is applicable to squirrel cage induction motor only.
An induction motor is practically a constant speed motor, that means, for the entire loading range, change in speed of the motor is quite small. The speed of an induction motor can be easily controlled by varying the frequency of the 3phase supply. This makes constant vf the most common speed control of an induction motor. The synchronous speed of an induction motor is given by the relation shown below. Speed control of induction motor by variable frequency control variable frequency control is a method which is used to control the speed of an induction motor. Ac induction motor speed control so what can we do to control the speed of an ac induction motor. Induction motor is now called the racehorse of the industry 1. The rotor speed of an induction motor is given by the equation shown below. Main objective of this project is to develop micro controller based application through which we can control speed of dc motor. In order to perform this operation we used pulse width modulation technique which. The main aim of direct torque control strategies is to effectively control the torque and flux of induction motor.
Various induction motor speed control methods advantages. The speed control of induction motor is done at the cost of decrease in efficiency and low electrical power factor. Speed control of induction motor 7 ways to control. Control system design the pid controller is designed to control motor speed based on incoming information of system and auto tuning and its parameters have been tuned for receiving best stability and overshoot and settling time. Speed control of a three phase alternating current induction motor using space. The aim of this study is to improve tracking performance of the induction motor drive. By using pwm strategies, in the reference 45 inverter is used to drive the speed of induction motor, ac choppers are used in the reference67 for the speed control of induction motor. Direct torque control for doubly fed induction machine.
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