So, the frequency of the rotor emf of course, f because rotor is not rotating so frequency. For the latter two technologies, we consider the case of three phase power, which is generally preferred over single phase because of much higher power density. In the first course, mainly the dc motor control both steady state and dynamic, and steady state torque. Transformer electrical4u electrical engineering and. They include brushless dc motors stepping motors single phase motors the universal motors single phase induction motors. At the end of the lecture, student should be able to.
Syllabus 1st year 1st semester common to all branches. Basic electrical technology nptel online videos, courses iit video lectures. Learn for free, pay a small fee for exam and get a certificate. A 3phase induction motor with synchronous speed of rev per minute. Concepts derived from phase diagram studies for the strengthening of fe. Electrical engineering basic electrical technology nptel. Electrical engineering modelling and analysis of electric. Hi friends, i hope you all are fine and doing great with your lives. Nptel, online courses and certification, learn for free.
Nptel, iit electrical engineering video lectures, courses, classes, tutorials, training iit video courses and video lectures. However, the textures of most engineering surfaces are random, either isotropic or. Introduction to induction motor the engineering projects. Such connections are often used in the laboratory to start 3 phase induction motor at reduced voltage. Kannapiran assistant professor department of electronics and communication engineering sasurie college of engineering vijayamangalam 638 056. View notes l30nkdet ee nptel from electrical ee212 at international institute of information technology. A 3 phase ac induction motor can be controlled by varying its inputs according to a. One single phase wattmeter plus miscellaneous apparatus as needed. It supplies an induction motor ich has a full load speed of 144wh 0 rpm. Lesson 29 rotating magnetic field in three phase induction motor. Understand the principle and the nature of single phase and 3 phase induction machines. Today, i am gonna give you an introduction of a single phase induction motor. It is described by the highest degree term of the formula for running time.
The we pass to phase 2 and compare a2 with a1 which is now in the third. Fundamentals, theory, and design college of engineering. List two problems each associated with over voltage and under voltage in a three phase induction motor. Induction machines guru nanak dev engineering college. Record all nameplate information for the induction motor. Figure shows the leonard set, which consists of an induction motor that drives the direct current.
Ppt threephase induction motor electrical engineering. Generation, transmission and distribution of electric. A servo motor is a dc or ac or brushless dc motor combined. For information on three phase, you can read my article on 3 phase.
Before coming to the power flow diagram in an induction motor, total input power fed to the motor via stator winding is i p v i. Hi all, let us begin the course on induction motors, in this video, we will have an introduction and basic construction concepts. A three phase, 12 pole, salient pole alternator is coupled to a diesel engine running at 500 rpm. Electrical engineering 2018 by ashish sir 3 phase synchronous. Institute technology dc free online course materials. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. This document is highly rated by electrical engineering ee students and has been viewed 2495 times. Assignment i visvesvaraya technological university. Primary focus will be on the operation of 3phase induction machine, single phase. Perform an analysis on induction machines which is the most rugged and the most. Lecture series on basic electrical technology by prof. Motor engineer provides high level technical consulting services for the electric motor and generator design market worldwide. Vvvf adjustable speed drives for induction motors both sixstep and pwm.
The stator winding of this machine is conventional, very much like that of an induction motor. Let us have an introduction about synchronous motors, and understand the basic principle of its operation. Single phase machines are restricted to small power levels. As i previously mentioned in my article on introduction to induction motors, there are two main types of induction motors, single phase induction motor and 3 phase induction motor.
Single phase induction motor the engineering projects. Of course, the actual voltages applied to the motor and the resulting. Ra provider sponsor free engineering forum software technical publication or resource. The slides and spindle of the cnc machine are driven by stepper motors. Specialpurpose electric machines the machines introduced in this lecture are used in many applications requiring fractional horsepower, or the ability to accurately control position, velocity or torque. Electrical engineering special electromechanical systems nptel. The balanced winding is of the same type, as given in lesson no. The book deals with the fundamentals, theory, and design of conventional cars with internal combustion engines ices, electric vehicles evs, hybrid. So, now principle of induction motor right so, the operation of three phase induction motor is. Alloying plays a central role in designing advanced engineering materials with. Pdf power electronics and drives used in automotive. Basic electrical technology usb media storage type. Most motors are three phase, but it is not difficult to carry out most of the analysis for an arbitrary number.
A course material on ee 2352 solid state drives by mr. Nptel syllabus advanced electric drives video course course outline the first course on electric drives usually introduces the concept of control of electric motors for various types of mechanical loads. You should also make a dc measurement of stator winding linetoline resistance. Dc motor, the ac induction motor, and the ac synchronous motor. Pdf this chapter deals with power electronics and drives used in electric vehicles ev. List the causes that are responsible for nonstarting of a three phase induction motor. For reason of economy, most houses, offices and also rural areas are supplied with single phase a. Explain how a rotating magnetic field is produced when the stator of a three phase induction motor is supplied from a symmetrical three phase supply.
First year common to all branches year 1st, semester i s. Per phase electrical model for generalized brushless pm motor. Nptel provides elearning through online web and video courses various streams. Module 8 three phase induction motor version 2 ee iit, kharagpur lesson. Fall 2005 ee595s electric drive systems 3 voltsperhertz control. Department of electrical engineering basic electrical engineering 4 credit course code. Induction motor, rotating magnetic field, three phase balanced winding, and balanced voltage. Fall 2005 ee595s electric drive systems 2 overview of strategies voltsperhertz control constant slip control fieldoriented control. There are two types of induction motors, one is named as single phase induction motor, while the second one is named as 3 phase induction motor. In this module we will be discussing the three phase induction machine. Induction motor 1 chapter 3 induction motor bee23 electrical machine power system 2 learning outcomes. Electrical engineering video lectures from nptel, iit, mit.
There are two basic reasons for the use of single phase motors rather than 3 phase motors. Umanand, principal research scientist, power electronics group, cedt, iisc bangalore. Basic electrical technology lecturer nptel videos description notes by prof. Introduction types of electrical machines types of 3ph induction motor basic principle working principle compnents of induction motor application comparision between 1ph i. Moduleiv 10 hours single phase induction motor, theory of operation double revolving field theory, equivalent circuit, determination of parameters methods of starting, split phase starting, repulsion starting, shaded pole starting, performance characteristics. Type, principle of operation, sliptorque characteristics. Single phase induction motors have very high starting torque b. Welcome to this open and free electrical engineering study site. The need for a starter therefore is not, conversely enough, to provide starting but to reduce heavy starting currents and provide overload and novoltage protection. Apr 18, 2020 ppt three phase induction motor electrical engineering ee notes edurev is made by best teachers of electrical engineering ee. Department of electrical engineering indian institute of technology, kharagpur lecture 59 three phase induction motors contd. Basic electrical technology nptel online videos, courses.
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