The implementation is done using a rectifier and an inverter, where the pwm triggering pulses were generated by using pic micro controller for switching the igbts of the inverter. Pdf speed control of an induction motor fed by an inverter using. In recent years, the control of the induction motor drive is an active research area. Simulation of 3ph induction motor in matlab with direct and.
As induction motors are widely being used, their speed control may be required in many applications. Keywords induction motor, speed control, fuzzy logic controller, torque control. So im working on a project titled controlling the speed of a single phase induction motor. Application circuit to control the speed of single phase induction motor. It is hard to learn anything valueable from that page.
The motor is started under different loads in two methods. The project pwm fed speed control of induction motor using pc is implemented successfully by using 16f877a pic microcontroller. May, 20 the project pwm fed speed control of induction motor using pc is implemented successfully by using 16f877a pic microcontroller. Microcontroller based speed control of three phase induction motor. In both induction and synchronous motors, the ac power supplied to the motor s stator creates a magnetic field that rotates in synchronism with the ac oscillations.
Also the induction motor can be run in either of the two directions which is quite useful in many applications. Nehrir, speed control of threephase induction motor by stator voltage control ieee transactions on industrial electronics and control instrumentatio n, may 1975. Speed control of three phase squirrel cage induction motor. Jun 05, 2018 different methods of speed control of induction motor. Conclusion to control the speed of induction motor inverters are commonly used, but in this project ac chopper is implemented to control speed of single phase induction motor by implementing the asymmetrical pwm method the efficiency of the motor is improved. Low cost, low maintenance, simple construction, reliability and high efficiency. Speed control of three phase squirrel cage induction motor using vf method is implemented. The comparison was done to change the motor speed from 0 to the rated speed n s with the rated load torque. In case of three phase induction motor torque produced is given by t. The approach is relatively easy as far as the power circuit and control circuit are concerned. 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. They run at a constant speed from noload to the full load.
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. 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. Pdf speed control of induction motor by using intelligence. Speed control of three phase induction motor electrical. The basic operation mechanisms are that when the series switches are closed the parallel switches are open then the current will be flow from supply to the induction motor. The operating point is the intersection of the two characteristics and we can fix for a given load and motor parameters. Pdf speed control of induction motors kamakhya basumatary. In this post let us see what are the various methods to control the speed of induction motor. If you want to control induction motor speed, save yourself a lot of grief and get a 3phase motor. Each method is studied and discussed using supporting simulation of currents, torque, speed, efficiency and power factor curves. The speed control of induction motor is more important to achieve maximum torque and efficiency. The most popular type is the 3phase, squirrelcage ac induction motor.
Matlab simulation for speed control of three phase induction. Pdf this paper gives the comparative study among various techniques used to control the speed of three phase induction motor. The motor is mounted in a test rig that allows one to control the torque applied to the motor shaft and to measure both rpm and torque. Induction motor is the most commonly used ac motor drive for various industrial and domestic applications. You should also make a dc measurement of stator winding linetoline resistance using a dmm. The three phase induction motor has following advantages. Free download induction motor seminar ppt, pdf report. In our project the speed of induction motor, control with the help of. Three phase induction motors are mostly used in motion based applications. Induction motor control is complex due to its nonlinear characteristics. There are following methods of speed control of three phase induction motor.
By default, the block sets the simulation type parameter to continuous to use a continuous sample time during simulation. The simplicity of this project is that it can be operate by any person who need not. Jan 09, 2017 speed control methods of induction motor. Ac motor drives are widely used to control the speed of pumps, blower speeds. Speed control of induction motor using pi and pid controller. Induction motor speed control using android application. The pmdc consists of rotor or armature and a stator, which is a permanent magnet. In this system we are modulating the width of pulse in order to control the speed of induction motor. Record all nameplate information for the induction motor.
Speed control of three phase induction motor using arduino. Simulation of 3ph induction motor in matlab with direct. A wireless speed control of three phase induction motor. Speed control of three phase induction motor electrical4u. Speed control of single phase induction motor using ac. There are two ways of speed control for a dc motor, field control in this method, the eld current or current through stator is varied to control the speed of. Matlab simulation of the proposed speed control method for 1hp induction motor was done to verify the performance of the proposed method. In this project was done to control the speed of the three phase induction. This paper contains the description about the design, construction and implementation of the speed control circuit for induction motor. 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. Induction motor speed control project serves this purpose of controlling the speed of. An843, speed control of 3phase induction motor using pic18 mcus.
Induction motor speed control project serves this purpose of controlling the speed of the induction motor. A theoretical background on scalar motor control principle. Project report speed control of induction motor eceprojects. The user can quickly start evaluating the performance of the vhz system with this method. Possible to change torque speed characteristics of drive by software modification. The induction motor block implements a threephase induction motor. Whereas a synchronous motor s rotor turns at the same rate as the stator field, an induction motor s rotor rotates at a somewhat slower speed than the stator field. Download project documentsynopsis induction motors have been used widely in different fields ranging from domestic appliances to industrial machinery. Speed control of induction motor using vf technique phase i a thesis. Pdf speed control of single phase induction motor using fuzzy. Induction motors have been used widely in different fields ranging from domestic appliances to industrial machinery. The most appropriator actuators for variable speed drive is seem to be capacitor run drive.
Get this project kit at system demonstrates a speed control mechanism that is efficient an. Speed control of an induction motor there is a various method of speed control of an induction motor. 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. In this method of speed control of three phase induction motor rheostat is added in the stator circuit due to this voltage gets dropped. Induction motor speed controller project nevon projects. The three phase induction motor or synchronous motor is used as ac drive. If the emf in the rotor of an 8 poles induction motor has a frequency of 1. Speed control of induction motor drive using universal. Speed control of induction motor 7 ways to control induction. Generally, it is known as the asynchronous motor because its running speed is less than its synchronous speed. Speed control of single phase induction motor using triac. The block uses the threephase input voltages to regulate the individual phase currents, allowing control of the motor torque or speed. This necessitates a speed control mechanism that is efficient and is also safe to use.
Induction motor seminar ppt, pdf report study mafia. Dec 05, 2014 the project uses two antiparallel scrs in series with an induction motor to the mains supply. This article explains the structure, principle of speed control and the features of each. Three phase induction motors are very popular in industrial, appliances and heavy industry applications. 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 zero crossing detector circuit to adjust the speed. In the proposed system speed of three phase induction motor can be controlled i. Speed control of threephase induction motor using pic18 microcontroller article will help you to design your project.
Speed control of induction motor using pic microcontroller. As we know that, rotor of an induction motor rotates at a speed somewhat lower than the synchronous speed. In the reference 3 different types of pwm strategies have been used for speed control of induction motor drive. Nov 17, 2016 get this project kit at induction motor speed controller project system demonstrates a speed control mechanism that is efficient an. Speed control of single phase ac induction motor possible. Methods of speed control of induction motor electrical concepts. Chapter pdf available january 2016 with 1,318 reads.
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. An induction motor can be used as induction generator, or it can be unrolled to form the linear induction motor which can directly generate linear motion. The ac speed control motor unit that uses the most popular singlephase capacitorrun induction motor, the small and highly efficient brushless dc motor unit, and the inverter unit that combines a threephase induction motor with a small inverter. Dec 17, 2019 therefore by changing the number of poles we can easily change the speed of three phase induction motor. Figure1 shows the simple block diagram for the system. Speed control methods of various types of speed control. Scrs are triggered from a firing angle trigger circuit having a potentio meter to gradually control. Let us first have a look at the relationship between the rotor speed and slip to arrive at various methods of speed control of. Pdf the applications of induction motors in various fields are. The rotor speed of an induction motor is given by the equation shown below. Different speed control methods of induction motor are explained below. In addition, electronics can reduce the systems average power consumption and noise generation of the motor.
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