The induction motor is made up of the stator, or stationary windings, and the rotor. Speed control of three phase induction motor ppt play ppt. The bars forming the conductors along the rotor axis are connected by a thick metal ring at the ends, resulting in a short circuit. Dq based modeling of three phase induction motor is presented in this model. Similarly in this post, we will made a powerpoint file accessible. Other motors that are included are 1 phase induction motors, permanent synchronous motors and synchronous reluctance motors. Be careful it can hurt to tangle with a three phase motor. Jun 04, 2017 inverter ppt pdf powerpoint presentation. Three phase induction motors used in explosive atmospheres w60 line squirrel cage rotor. Induction motors ppt transformer electrical engineering. The rotor will constantly be turning to align its magnetic field with that of the stator field. Induction motors ppt free download as powerpoint presentation. Working of 3 phase induction motor is explained in this video with help of animation.
Induction motor basics, single phase and three phase. 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. Rotating flux is only possible when 3 phase voltage or poly phase which is 120 degree apart in time is applied to a three phase winding or poly phase winding 120 degree apart in space. The 3phase set of currents, each of equal magnitude and with a phase.
When the primary winding or stator is connected to a three phase alternating current supply, it. Threephase induction motor ppt download slideplayer. There are two basic reasons for the use of single phase motors rather than 3 phase motors. Maintenance and troubleshooting three phase induction motor. Induction motor seminar ppt, pdf report study mafia. Perform an analysis on induction machines which is the most rugged and the most.
When a three phase induction motor connected to a single phase power supply using the steinmetz connection operates in a practical noload condition, not all windings consume active power. The primary focus of problems in a three phase induction motor is in their stators and their supports. As previously, we have covered a lot of important topics. Ac induction motors are also the most common motors used in main powered home appliances. The leading causes of failures are superheating, imperfections in the isolation, mechanical bearings, and electrical failures. A simple explanation of how a 3 phase induction motor works.
A 3 phase induction motor can be used for different applications with various speed and load requirements. So the main idea behind motor maintenance is to prevent breakdown rather than repairs them. Dec 29, 2017 apr 30, 2020 ppt three phase induction motor electrical engineering ee notes edurev is made by best teachers of electrical engineering ee. Nov 27, 2019 thus from the working principle of three phase induction motor, it may be observed that the rotor speed should not reach the synchronous speed produced by the stator.
This document is highly rated by electrical engineering ee students and has been viewed 2516 times. There are two types of induction motors, one with wound type rotor, also called slipring motor and another one with squirrelcage rotor. The basic idea of an electric motor is to generate two magnetic fields. Share speed control of three phase induction motor ppt. Inductor convertor the dc voltage as constant current source csi regulated. View 3 phase induction motor ppts online, safely and virusfree. One single phase wattmeter plus miscellaneous apparatus as needed. Starting method for induction motors a 3 phase induction motor is theoretically self starting. Induction motor 1 chapter 3 induction motor bee23 electrical machine power system 2 learning outcomes. Cad library electric motors 2d3d drawings cad library automation 2d3d drawings do you need other materials. Historythe induction motor with a wrapped rotor wasinvented by nikola tesla in 1888 in the unitedstates. The stator of an induction motor consists of 3 phase windings, which when connected to a 3 phase supply creates a rotating magnetic field.
Induction motor theory jerry bednarczyk, pe course content introduction the ac induction motor is well suited to applications requiring constant speed operation. In this video basic of construction and working principle of 3 phase induction motor is explained with the help of 3d animation. In general, the induction motor is cheaper and easier to maintain compared to other alternatives. An inverter is nothing but a motor control which is used in adjusting the speed of an ac induction motor. Generally, an ebook can be downloaded in five minutes or less.
Threephase induction motors are the most common and frequently encountered machines in industry it can be. Synchronous motors are special types of motors used in constant speed applications, whereas most of the motors used in the industrial applications are of induction type. Free download induction motor seminar ppt, pdf report. Three phase induction motors used in explosive atmospheres w60 line squirrel cage rotor horizontal date. Single phase induction motor the single phase induction machine is the most frequently used motor for refrigerators, washing machines, clocks, drills, compressors, pumps, and so forth.
The topic lies under the basic electrical and electronics engineering course that covers various other. The ac induction motor is the most used electrical motor in industrial applications worldwide. If the speeds become equal, there would be no such relative speed, so no emf induced in the rotor, and no current would be flowing, and therefore no torque would be generated. We also discuss the construction of a three phase motor including its. In this chapter, we shall focus our attention on the construction. The most common type of ac motor being used throughout the work today is the induction motor. Three phase induction motors authorstream presentation. Phase induction motors capacitorstart induction motor dynamic.
Thus from the working principle of three phase induction motor, it may be observed that the rotor speed should not reach the synchronous speed produced by the stator. It certainly leads to the best performance and high efficiency of the induction motor. Unit 16 electric motors washington state university. What are the advantages of a three phase induction motor. Threephase induction motor singlephase induction motor there are probably more singlephase ac induction motors in use today than the total of all the other types put together. The 3 phase set of currents, each of equal magnitude and with a phase. The very first thing that you should do before starting any type of maintenance on a motor is a visual inspection, a lot of times the trouble can be found just by looking, because if the problem is that bad then it should be very obvious by observation. The adobe flash plugin is needed to view this content.
The bars forming the conductors along the rotor axis are connected by a thick metal ring at the ends, resulting in a short circuit as shown in figure 1. View and download powerpoint presentations on 3 phase induction motor ppt. The speed of the ac induction motor is adjusted by the frequency variation of the ac power to the motor. We are nonprofit website to share and download documents. Generally, it is known as the asynchronous motor because its running speed is less than its synchronous speed. Record all nameplate information for the induction motor.
When the 3 phase stator windings are fed by 3 phase supply, a magnetic flux of constant magnitude which is rotating at synchronous speed is set up. The stator carries a 3 phase winding called stator winding while the rotor carries a shortcircuited winding. The stator of an induction motor consists of a number of overlapping windings offset by an electrical angle of 120. The threephase induction motor is the extensively used for various kinds of industrial drives. There are also links to powerpoint slideshows that show the animations seen in the presentations.
Advantages of 3 phase induction motor generally easy to build and cheaper than corresponding dc or synchronous motors induction motor is robust. At the end of the lecture, student should be able to. Three phase induction motor consists of a stator and a rotor, and there is no electrical connection between these two. The singlephase ac induction motor best fits this description.
A successful salesman for general electrics motor division once remarked to one of your instructors that, when asked by a customer how a motor. These are of two types, squirrel cage and slip ring motors. Jan 15, 2014 watch this video to understand the working principals of the three phase induction motors. The operating principle of a 3 phase induction motor is based on the production of r. Ppt threephase induction motor electrical engineering ee. Here basic operation principle of an induction motor is. It is logical that the least expensive, lowest maintenance type motor should be used most often. Presentation on 3 phase motor free download as powerpoint presentation. The three phase induction motors are simple in construction, rugged, low cost and easy to maintain. Simulink model of three phase induction motor file exchange. What is common to all the members of this family is that the basic physical process involved in their operation is the conversion of electromagnetic energy. These motors are squirrel and slipring type induction motors. Today we are going to made available a powerpoint presentation file for all.
Similarly in this post, we will made a powerpoint file accessible for all. Clicking on the following links will allow you to down load adobe acrobat files of the class lecture not there are also links to powerpoint slideshows that show the animations seen in the presentations if you need a powerpoint viewer follow this link to the, 12a three phase induction motors download download. Working principal of three phase induction motor electrical. The main purpose of controlling the speed of three phase induction motor is to save unwanted energy. Search wegthreephaseinductionmotorsmasterline50019089. A poly phase induction motor consists of two major parts, the stator and rotor when stator is excited with a. Variable frequency drive vfd three phase induction motor energy meter clamp meter timer a variablefrequencydrive vfdisusedtocontrolthespeedofthe3phaseinductionmotor. These stator and rotors are made up of highmagnetic core materials with less hysteresis and eddy current losses.
The working of the three phase induction motor is based on the principle of electromagnetic induction. Like any electric motor, a 3 phase induction motor has a stator and a rotor. Find powerpoint presentations and slides using the power of, find free presentations research about 3 phase induction motor ppt. Jun 10, 2017 in this video basic of construction and working principle of 3 phase induction motor is explained with the help of 3d animation. By far the most commonly used ac motor is the induction motor. Introduction types of electrical machines types of 3 ph induction motor basic principle working principle compnents of induction motor application comparision between 1ph i.
When three phase stator winding of an induction motor is energized from a 3 phase supply, a rotating magnetic field is set up which rotates around the stator at synchronous speed n s. Compare the rotation of this motor with that in figure 164. Ppt threephase induction motor electrical engineering. The sinusoidal stator phase currents fed in the stator coils create a magnetic field. Threephase induction motors are the most common and frequently. Inverter not only adjusts the speed but also adjusts the voltage to the motor. Scribd is the worlds largest social reading and publishing site. Three phase or poly phase motors are of mainly two types. Ppt presentation on speed control of induction motor nilesh. Understand the principle and the nature of single phase and 3 phase induction machines. Download 3 phase induction motor powerpoint presentation today we are going to made available a powerpoint presentation file for all.
Download 3 phase induction motor ppt archives jugaruinfo. Applications of three phase induction motors of size varying from half a kilowatt to thousands of kilowatts are numerous. View and download powerpoint presentations on three phase induction motor ppt. Ppt induction motor powerpoint presentation free to. The three phase induction motor is the extensively used for various kinds of industrial drives. Presentation on 3 phase motor electromagnetic induction machines. They are found everywhere from a small workshop to a large manufacturing industry. A three phase induction motor runs on a three phase ac supply. You should also make a dc measurement of stator winding linetoline resistance. Ppt induction motor powerpoint presentation free to download id. For reason of economy, most houses, offices and also rural areas are supplied with single phase a. This final thesis will mostly be dedicated to induction motors but also to synchronous permanent magnet and reluctance motors.
This article concentrates only on a three phase induction motor and its protection. Ppt three phase induction motor powerpoint presentation, free. The stator carries a 3 phase winding called stator winding while the rotor carries a shortcircuited winding called rotor winding only the stator winding is fed from the 3 phase supply. Difference is that transformer is an alternating flux machine while induction motor is rotating flux machine. A three phase ac induction motor is the only type where the rotating magnetic field is created naturally in the stator because of the nature of the supply. To the running of this website, we need your help to. Dc motors depend either on mechanical or electronic commutation to create rotating magnetic fields. Download 3 phase induction motor powerpoint presentation. A 3 phase induction motor has two main parts i stator and ii rotor. Squirrel cage induction motor requires significantly less maintenance as it does not contain brushes, commutators, slip rings. Three phase ac induction motors are widely used in industrial and commercial applications. Nov 04, 2012 introductionan induction motor im is a type ofasynchronous acmotor where power is supplied to therotating device bymeans ofelectromagneticinduction three phase induction motors 4. They run at a constant speed from noload to the full load. The single phase induction motor resembles, three phase, squirrelcage motor except that, single phase induction motor has no starting torque and some special arrangement have to be made to make it as self starting.
Find powerpoint presentations and slides using the power of, find free presentations research about three phase induction motor ppt. Ac induction motors are also the most common motors used in. These motors are selfstarting and use no capacitor, start winding, centrifugal switch or other starting device. Dynamic performance of threephase induction motor radhika priyadarshini, m. A variable frequency drive vfd is used to control the speed of motor with the primary voltage control method. Apr 30, 2020 ppt three phase induction motor electrical engineering ee notes edurev is made by best teachers of electrical engineering ee.
Tech, 2nd semester, eee, acit, bangalore lekshmi m, associate professor, eee, acit, bangalore abstract a dynamic model of an induction motor considers the instantaneous effects of varying voltagecurrents, stator. The single phase motor stator has a laminated iron core with two windings arranged perpendicularly. Ppt induction motor powerpoint presentation free to download. Threephase induction motor protection systems and its. There are two types of rotors which are employed in 3 phase induction motor. The rotor is separated from the stator by a small airgap which ranges from 0. Since here we are talking about maintenance of induction motor, and it is of two types. Introduction types of electrical machines types of 3ph induction motor basic principle working principle compnents of induction motor application comparision between 1ph i.
956 686 66 885 1497 660 1039 588 1085 765 113 867 499 615 1032 157 1269 1490 1455 758 271 1349 242 1287 1328 484 1013 1144 1044