Srms are made up of laminated stator and rotor cores with ns2mq poles on the stator and nr poles on the rotor. A stator winding is placed in the stator of induction motor and the three phase supply is given to it. Introductionan induction motorim is a type ofasynchronous acmotor where power is supplied to therotating device bymeans ofelectromagneticinduction threephase induction motors 4. This paper presents load characteristics of a threephase induction motor model core calculated with the. As previously, we have covered a lot of important topics. A three phase supply is given to the stator of the induction motor.
The power and torque developed by the motor will be three times that of one phase. Today we are going to made available a powerpoint presentation file for all. Displaying powerpoint presentation on three phase induction motor available to view or download. A threephase 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. Ppt induction motors powerpoint presentation free to. Scribd is the worlds largest social reading and publishing site. Three phase induction motor parts in hindi youtube. Several additional components are necessary to operate the singlephase motor. In this video basic of construction and working principle of 3 phase induction motor is explained with the help of 3d animation. You can download free ppt threephase induction motor electrical engineering ee notes edurev pdf from edurev by using search above. Find powerpoint presentations and slides using the power of, find free presentations research about three phase induction motor ppt. Free download induction motor seminar ppt, pdf report.
These types of motors are known as selfstarting induction motors. A portion of rotating magnetic field in a threephase. As its name indicates stator is a stationary part of induction motor. Threephase induction motors are the most common and. 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. Ppt induction motor powerpoint presentation free to. Umanand, principal research scientist, power electronics group, cedt, iisc bangalore for more detail. There are two types of rotors which are employed in 3 phase induction motor. Ppt three phase induction motor powerpoint presentation, free. Generally, it is known as the asynchronous motor because its running speed is less than its synchronous speed. Displaying powerpoint presentation on three phase induction motor department of electrical available to view or download.
The main purpose of controlling the speed of three phase induction motor is to save unwanted energy. Understand the principle and the nature of single phase and 3 phase induction machines. The stator carries a 3phase winding called stator winding while the rotor carries a shortcircuited winding. Ppt equivalent circuit of an induction motor rotor. Despite the fact that the threephase motor has more phases than the singlephase motor, the singlephase motor is a much more complex machine. Both the ends are connected with bearings for free rotation means of reduced friction. As the name indicates stator is a stationary part of induction motor. The working of the threephase induction motor is based on the principle of electromagnetic induction. An induction or asynchronous motor is an ac electric motor in which the electric current in the rotor needed to produce torque is induced by electromagnetic induction from the magnetic field of. Threephase or polyphase motors are of mainly two types. Record all nameplate information for the induction motor. The single phase induction motor resembles, threephase, 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. Ppt induction motor powerpoint presentation free to download.
We also discuss the construction of a three phase motor including its. Induction motor electric motor squirrel free 30day. A 3phase, y connected, 460 volt line to line, 25 horsepower, 60 hz, 8 pole induction motor has the following constants, in ohms per phase referred to the stator. A free powerpoint ppt presentation displayed as a flash slide show on id. Induction motors ppt free download as powerpoint presentation. Three phase induction motor powerpoint ppt presentation. Introduction types of electrical machines types of 3ph induction motor basic principle working principle compnents of induction motor application comparision between 1ph i. Like any other electrical motor, induction motors have two main parts the rotor and the stator. You should also make a dc measurement of stator winding linetoline resistance. The threephase induction motor is the extensively used for various kinds of industrial drives.
A variable frequency drive vfd is used to control the speed of motor with the primary voltage control method. 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. Most favored configuration amongst many more options are 64 three phase and 86 four phase srms as shown in the figure 1a. Outer frame it is the outer body of the of the motor. Download three phase induction motor department of electrical pp for free. Threephase induction motor ppt download slideplayer. This document is highly rated by electrical engineering ee students and has been viewed 787 times. Historythe induction motor with a wrapped rotor wasinvented by nikola tesla in. Three phase induction motor department of electrical. Perform an analysis on induction machines which is the most rugged and the most.
A simple explanation of how a 3 phase induction motor works. Threephase induction motors authorstream presentation. In the case of three phase ac alternating current operation, the most widely used motor is a 3 phase induction motor, as this type of motor does not require an additional starting device. Ac induction motors are also the most common motors used in main powered home appliances. In this chapter, we shall focus our attention on the construction. It is widely used when compared to the three phase motor for the. The speed of the ac induction motor is adjusted by the frequency variation of the ac power to the motor. One singlephase wattmeter plus miscellaneous apparatus as needed. An electrical motor is an electromechanical device which converts electrical energy into mechanical energy.
View 3 phase induction motor ppts online, safely and virus free. Inverter not only adjusts the speed but also adjusts the voltage to the motor. Induction motor 1 chapter 3 induction motor bee23 electrical machine power system 2 learning outcomes. The three phase induction motors are simple in construction, rugged, low cost and easy to maintain. Induction motors introduction threephase induction motors are the most common and frequently encountered machines in industry simple design, rugged, lowprice, easy. Efficiency of induction motor when the induction motor is connected to a 3phase supply, current flows in the primary circuit, heat is produced in the stator conductor as copper loss no load current also flows and further power is lost as iron losses power than flow through the air gap as magnetic field energy, there will be no loss in the air gap further energy is lost in the rotor winding as. The 3phase set of currents, each of equal magnitude and with a phase. Presentation on induction motor linkedin slideshare. An inverter is nothing but a motor control which is used in adjusting the speed of an ac induction motor. Search, download, upload, request and share educational ppts for free.
The number of phases is m and each phase is made up of concentrated coils placed on 2q stator poles. Lecture series on basic electrical technology by prof. Ppt threephase induction motor electrical engineering ee. When threephase 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 ns. Double field revolving theory ac current flows through the stator two fields are generated 1f forward rotating field 2bbackward rotating field pulsating field due to various magnitudes of field at diff time 2 3. Stator is made up of number of stampings in which different slots are. Induction motor seminar ppt, pdf report study mafia. Similarly in this post, we will made a powerpoint file accessible for all. Generally, an ebook can be downloaded in five minutes or less. Applications of threephase induction motors of size varying from half a kilowatt to thousands of kilowatts are numerous. Threephase induction motors are the most common and frequently encountered machines in industry it can be. The rotor will constantly be turning to align its magnetic field with that of the stator field. Apr 01, 2020 chapter 3 phase induction motor drives, ppt, electrical machines, semester, engineering electrical engineering ee notes edurev is made by best teachers of electrical engineering ee. Like any electric motor, a 3phase induction motor has a stator and a rotor.
The most common type of ac motor being used throughout the work today is the induction motor. The basic idea of an electric motor is to generate two magnetic fields. Advantages of 3 phase induction motor generally easy to build and cheaper than corresponding dc or synchronous motors induction motor is robust. View and download powerpoint presentations on three phase induction motor ppt. An induction motor is also called asynchronous motor as it runs at a speed other than the synchronous speed. Threephase induction motor protection systems and its. This article concentrates only on a threephase induction motor and its protection. For this example, refer to the motor equivalent circuit and calculations described above.
At the end of the lecture, student should be able to. They run at a constant speed from noload to the full load. Speed control of three phase induction motor ppt play ppt. Download 3 phase induction motor powerpoint presentation. Dc motors depend either on mechanical or electronic commutation to create rotating magnetic fields. Induction motor maintenance february 17, 2019 february 24, 2012 by electrical4u maintenance as the name suggests it is the action necessary for retaining or restoring a piece of equipment or machine to the specified operable condition to achieve its maximum useful life. At the instant of starting, a 3phase induction motor is like a transformer whose secondary side is short circuited slip s1. Chapter 3 phase induction motor drives, ppt, electrical. Induction motor free download as powerpoint presentation.