Three phase motor control using scr the stator voltage can be reduced by delaying triggering pulses of the scr, if we delay these pulses the voltage may be reduced from rated ip voltage, which causes to decrease the speed of motor. Nowadays plc is used in wide type of applications in industries. Sensorless speed control of an induction motor drive using. Know basics of 3 phase ac induction motor and its control using svpwm 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.
The intent of this paper is to compare and evaluate between the performance of the speed control of induction motor by using plc programmable logic control and also pid proportional integral derivative controller. Control and monitoring of 3 phase induction motor using plc. Introduction this application note describes the design of a 3phase ac induction motor drive with volts per hertz control in closedloop vhz cl. Sensorless speed and position control of induction motor servo drives using mlp neural network and sliding mode controller morteza majdi and farzan rashidi faculty of engineering, azad university of tehransouth branch tehran, iran abstract in this paper, the sensorless speed and position control of induction motor drive is studied.
Power line communications and its applications, 2009. In this application plc of allen bradley is used which communicate with vfd and in turn. Three phase induction motor drive using igbts and constant. Using a switching arrangement, at a time, supply is given to one winding only and hence speed control is possible. A properly designed variable frequency induction motor drive can be very flexible. Its are the most widely used motors for appliances, industrial control, and automation.
Speed control of 3 phase induction motor programmable. Various induction motor speed control methods advantages. The synchronous speed and therefore, the speed of the motor can be controlled by varying the supply frequency. Design and implementation of plc based monitoring control. The induction motors starting and protection using conventional starters require lot of wiring and components. Tests of the induction motor system driven by inverter and controlled by plc prove a higher accuracy in speed regulation as compared to a conventional. Specifically, at high speeds and loads, the efficiency of plccontrolled system is increased up to 1012% as compared to the configuration of the induction motor supplied from a standard network. Speed control of induction motor using cycloconverter. Speed control of three phase induction motor using plc. Design and implementation of plcbased monitoring control.
The discussion is based on the dspicdem mc motor control development system, but you can use your own hardware if you choose. Vf speed control of three phase induction motor by using plc. Rotor induction motor can either type of wound or squirrelcage. We have designed a control panel and programmed the plc according to our need. The speed control of poly phase induction motor can be done through the different methods. Speed control of induction motor using pi and pid controller. The results obtained for power factor improvement from power analyzer connected across induction motor gives a fine control. Pdf induction motor speed control using power line. So speed control of this motor is an important agenda. By using variable frequency control, it is possible to adjust the speed of the motor either above or below base speed. Implementation of motor speed control using proportional integral derrivative pid controller using.
The speed control of induction motor is done at the cost of decrease in efficiency and low electrical power factor. Instead of conventional methods, going for plc based starting and prote. Speed control of vector controlled induction motors using. The basic structure of the plc is illustrated in fig. In this post let us see what are the various methods to control the speed of induction motor.
Get this project kit at system demonstrates a speed control mechanism that is efficient an. It is based on freescales 56f800e microcontrollers. How to control the speed of an induction motor quora. However, there is more to improve in open loop drives. Control system of induction motor using plc plc software once written must be easy and intuitive to follow. Jun 06, 2016 speed control of induction motor using plc and vfd 1. When power is supplied to an induction motor at the recommended specifications, it runs at its rated speed. Thus we have to control the speed of induction motor using triac. Speed control of induction motor by using inverter vfd. It can control the speed of an induction motor over a range from as little as 5% of base speed up to about twice base speed. Fabrication of monitoring and control system for 3 phase induction motor based on programmable logic controller plc technology.
Triac as induction motor speed controller prof abhijit kalbande1a, sapana rathod2a a assistant professor 1,p. These techniques depend on varying the stator ac voltage to control the speed of threephase induction motor. Fault diagnosis of induction motor using plc open access. Pdf speed control of induction motor using plc and scada.
We use here delta ac motor drive for its operation. A properly designed variable frequency inductionmotor drive can be very flexible. In this application plc of allen bradley is used which communicate with vfd and in turn control the speed of induction motor. Jul 10, 2010 control system of induction motor using plc plc software once written must be easy and intuitive to follow. Speed control of induction motor using adr controller madhuri jakkampudi1, grandhi ramu2 1,2electrical and electronics engineering department, chaitanya institute of science and technology, kakinada, a. 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. Speed control of an induction motor there is a various method of speed control of an induction motor. Download project documentsynopsis induction motors have been used widely in different fields ranging from domestic appliances to industrial machinery. We know that t he speed of the induction motor is given by, from the above equation, the speed of the motor can be controlled by changing supply frequency and by changing number of poles in the stator. Nov 17, 2016 get this project kit at induction motor speed controllerproject system demonstrates a speed control mechanism that is efficient an. Sensorless speed control of an induction motor drive using predictive 1179 the work presented in this thesis is a continuation of a work that started with studies of the oscillatory behaviour of inverter fed induction machines peterson, 1991. The rotor speed of an induction motor is given by the equation shown below. This necessitates a speed control mechanism that is efficient and is also safe to use.
Speed control of induction motor drive using nnnpc hossein ebadi kalhoodashtia1, esmaeel naghibib, mostafa alinezhad c afajr gas refining co. Speed control of induction motor using pid controller pdf. The paper is about speed control of three phase induction motor using plc programmable logic controller through vfd variable frequency drive. Induction motor or asynchronous motor is an ac electric motor in which the rotor torque produced is caused by electromagnetic induction from the stator winding of the magnetic field. The synchronous speed of an induction motor is given by the relation shown below. Pdf speed control of three phase induction motor using plc. Here a programmable logic controller is used which will be programmed as per our need. Plcs are an integrated part of the domain systems, advances in technology of the system will effect the requirements of the plc software. Jun 08, 2019 nearly 80% of the worlds ac motors are poly phase induction motors. When power is supplied to an induction motor at the recommended specifications, it runs. These strategies are known as extinction angle control eac, modified phase angle control mpac, and symmetrical angle control sac.
The role of cycloconverter in speed control of induction motor is to vary the supply frequency which in turn, changes the speed of motor. In this method of speed control of three phase induction motor, we provide two separate windings in the stator. I need to control the speed of an single phase induction motor not less than a 400w, no more than a 1kw, 220v 50hz. A three phase induction motor is basically a constant speed motor so its somewhat difficult to control its speed. Dec 17, 2019 in this method of speed control of three phase induction motor, we provide two separate windings in the stator. Speed control of a three phase induction motor using pwm. The used of plc in this project will help to reduce complexity and easy to troubleshoot. In the present work, the simulation of speed control of motor at different frequencies by using cycloconverter is. The system is designed using a plc for intelligent control on a threephase induction motor and. In such cases, a control unit involving a plc must be added to the system structure. These two stator windings are electrically isolated from each other and are wound for two different numbers of poles. Jan 09, 2017 speed control methods of induction motor.
If you continue browsing the site, you agree to the use of cookies on this website. Presented here is a robust system for switching onoff, varying the speed and direction of rotation of an industrial 3 phase induction motor using vfd and plc. This paper presents design and analysis of a three phase induction motor drive using igbt. Pdf induction motor speed control using plc and scada.
An984, an introduction to ac induction motor control using. In the present work, the simulation of speed control of motor at different frequencies by using cycloconverter is simulated and waveforms are discussed. Speed control of induction motor using triac 38 conclusion after simulation it is clear that we can change or vary the speed of induction motor by varying gate firing angle. The main objective of the work is use a programmable logic controller plc instead of the classic control to make a cheap and reliable protection system for three. However, we selected the rotor resistance method of control for starting the induction motor. Induction motor speed control using power line communication. To address this problem, a plc based control system was designed for a threephase induction motor. The use of the motor power cable in the speed feedback induction motor. Here we will discuss about the speed control of wound rotor induction motor using variation of rotor resistance. Controlling and protection of three phase induction motor using plc.
What is future scope in plc based induction motor starting. Vf speed control of three phase induction motor by using plc and scda. Speed control of induction motor 7 ways to control. 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 induction. Programmable logic controller, supervisory control and. An843, speed control of 3phase induction motor using.
It is a 16 bit highperformance digital signal controller dsc. Reference 1 theory and performance of electrical machine a book by j. Thus, by implementing automation scheme the productivity can be improved at lower cost. The simulation work proves the idea of vf control using pwm inverter and the software used for simulation is psim powersim. The performance of the volt per hertz strategy were evaluated through simulation shown in results. Component of speed control of im by plc miniature circuit breaker mcb. In this paper, various aspects of three phase induction motor such as speed. This paper presents a plc based monitoring and control. Induction motors are the most widely used motors for appliances, industrial control, and automation.
The objective of this project is to use the algorithm of proportional integral derivative pid controller to control the speed of the dc motor using programmable logic controller plc implementation. The obtained efficiency by using plc control is increased as compared to the openloop configuration of the induction motor fed by an inverter. Three phase induction motor are widely used motor in industry because of its rugged construction and negligible maintenance. In this study, the plc measures the current, the voltage, the temperature, and the speed of an induction motor through analog inputs. Also there are different methods to control the speed of induction motor. Introduction this application note describes the design of a 3phase ac induction vector control drive with position encoder coupled to the motor shaft. Induction motor speed control using plc and scada irjet. Induction motors are widely used in industry because of their rigidity and speed control flexibility. Controlling 3phase induction motors using vfd and plc. Rotor resistance control of induction motor electrical4u. Speed control of three phase induction motor electrical4u.
Abstract the control of induction motors has been a primary concern of researchers. Sensorless speed and position control of induction motor. Input and output components of the processes are connected to the plc. I recently bought an arduino uno and im a complete newb, so be prepared for silly questions. This paper include with simulation of vf speed control of threephase induction motor using pwm inverter strategy. Speed control of 3 phase induction motor free download as powerpoint presentation. Nearly 80% of the worlds ac motors are poly phase induction motors.
All the required control and motor performance data will be taken to a personal computer via plc for further analysis. Starting and speed control of 3phase slipring induction. 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. Also the induction motor can be run in either of the two directions which is quite useful in many applications. An ac motor is used in the research together with the plc, encoder and proface touch screen. Speed control of three phase induction motor using plc under. Performance evaluation between plc and pid controllers. Introduction this application note describes the design of a 3phase ac induction vector control drive with position encoder coupled to. Pdf plcbased control system for a threephase induction. In addition, we will monitor motor parameters via scada system. Speed control of induction motor by variable frequency control. In this study, the plc measures the current, the voltage, the temperature, and the speed of. There are more than one methods to control the speed of induction motor, you can choose one depending on your resources, efficiency required etc.
It can control the speed of an induction motor over a range from as little as. Therefore, the problem of induction motor protection attracted many researchers. The dspicdem mc motor control development system has electrical isolation and is fully selfprotected against faults. Control of induction motors by using programmable logic. Vf speed control of three phase induction motor by using. Various automation processes in the industry need control of ac induction motors using ac drives.