Nptel, iit, lectures, courses, video, engineering, online. This video shows the characteristics of a dc motor. Find materials for this course in the pages linked along the left. Ac induction motors are also the most common motors used in main powered home appliances. Must watch it subscribe our electrical engineering related channel electrical academy to get the. The video lectures were generously provided by tim fiegenbaum at north seattle community college. Lets learn the working of an electric motor, which converts electricity into a rotation. The course notes are intended to serve as the primary references for this course, and were developed over the years during which the course has been offered. Induction motor theory jerry bednarczyk, pe course content introduction the ac induction motor is well suited to applications requiring constant speed operation. If you have watched this lecture and know what it is about, particularly what electrical engineering topics are discussed, please help us by commenting on this video with your suggested description and title. Electrical engineering video lectures from nptel, iit, mit. Passive components, sources, krichoffs law, modeling of circuit, analysis using matlab, transfer function and pole zero domain, phasor analysis, the practical transformer, phasor analysis, transformer basics, dc machines, dc generators, dc motors, three phase system, induction motor and synchronous machine. This is an introductory lab designed to introduce you to the oscilloscope and matlab. Lecture series on basic electrical technology by prof.
Magnetic circuits quantities and definitions, solving magnetic circuits with electrical analogies, mechanics for motors and generators, electromagnetic induction and magnetic forces, construction of elementary dc generators, induced voltage in practical dc. Dc motors are rarely utilized in normal applications as a result of all electrical supply firms furnish electrical energy but, for special applications like in steel mills, mines and electric traction, its advantageous to convert ac into dc so as to use dc motors. Modules may be used by teachers, while students may use the whole package for self instruction or for reference. A good material for the poles of a pmdc motor should have the apposite of the above. Mod01 lec39 lecture 39testing of dc series motors 40. Dc motor, generators and energy conversion devices lecture. Razor scooter wheel motor at first glance, a brushless directcurrent bldc motor might seem more complicated than a permanent magnet brushed dc motor, but the purpose of the following is to emphasize the simple analytical techniques that can be used to understand the operation of a bldc. Advantages of 3 phase induction motor generally easy to build and cheaper than corresponding dc or synchronous motors induction motor is robust. Tirslk module 12 lecture video part i dc motors physics video. Nptel provides elearning through online web and video courses various. Dc motor, generators and energy conversion devices lecture notes.
Experiment 7 series dc motor i objectives to determine the torquespeed characteristic curve. In this video, construction of dc machines with all the parts are conceptually explained. Dc motor principle a machine that converts dc power into mechanical energy is known as dc motor. Course notes electric machines electrical engineering.
Draw the simplified speedtime curve for the main line services and show all necessary periods. Sal shows that this net torque will cause the loop to rotate. This section contains lecture notes in both pdf and powerpoint formats. The rotor and stator windings are connected in parallel. Dc motor introduction, principle and working my tech info. Motor control rss lecture 3 monday, 7 feb 2011 prof. Dc machine are the electromechanical energy conversion devices which converts either dc power to mechanical power or mechanical power to dc power. Other members of the family are the directcurrent dc motor or generator, the induction motor or generator, and a number. The induction motor is made up of the stator, or stationary windings, and the rotor. Types of dc motors dc motor are of 3 types they are 1. Umanand, principal research scientist, power electronics group, cedt, iisc. Electrical machines i online course video lectures by. Our free video lectures cover everything from basic electronics to semiconductor technology.
Using flemings left hand rule, we show you how to determine the direction the winding. This video lecture, part of the series industrial drives. An intro to the four types of dc motors motion control blog. Mod01 lec40 lecture 40characteristics of compound dc series motors freevideolectures aim to help millions of students across the world acquire knowledge, gain good grades, get jobs. You will measure the angular velocity of your homebuilt motor and characterize a dc motor by measuring its motor constant. Introduction a series dc motor is a motor whose filed windings consists of a relatively few turns connected in series with the armature circuit. Mod01 lec37 lecture 37starting and braking of dc series motors mod01 lec38 lecture 38speed control and of dc series motors mod01 lec39 lecture 39testing of dc series motors. The notes are organized in chapters, though the chapters may not correspond precisely with the order of the material as discussed in lecture. Learning objectives identify and define the components of a two pole permanent magnetic dc motor stator, armature, commutator and brushes. Digital communication notes pdf dc lecture notes 4.
Module 5 dc generators this module describes the types of dc generators and their application in terms of voltage production and load characteristics. Electric motors and generators introduction a simple ac generator a simple dc generator dc generators or dynamos ac generators or alternators dc motors ac motors universal motors electrical machines a summary chapter 23 introduction. If the emf in the rotor of an 8 poles induction motor has a frequency of 1. This type of dc motor provides great starting torque and has good speed regulation, but torque is limited so they are typically found on low horsepower applications. Course home syllabus calendar readings lecture notes lab videos assignments download course materials. Module 6 dc motors this module describes the types of dc motors and includes discussions of speed control, applications, and load characteristics.
Electric motors and generators explained using animations, plus stepper motors. This video provides all the important mcq questions from dc motor in detail and also provides some important points to remember for exams and interviews must watch dc motor all other important. Whether youre a beginner or an advanced learner looking for refresher courses, youll find them in our informative video series. Physclips provides multimedia education in introductory physics mechanics at different levels. A dc motor is a mechanism that transforms electrical energy to mechanical energy. Simple analysis for brushless dc motors case study. Information and entropy, conditional entropy and redundancy, shannon fano coding, mutual information, information loss due to noise, source codings huffman code, variable length coding, source coding to increase average lnfomtation per bit. Bee basic electric engineering is common to first year branches of ug engineeringexpect bt. Nptel video lectures, iit video lectures online, nptel youtube lectures. Video lecture on working principle of a dc motor of chapter dc machine of subject basic electrical engineering for firstyear engineering students. Dc motors although ac motors are used in most of the cases, dc motors have many applications and used for multipurpose applications. Sal shows that there will be a net torque on a loop of current in a wire.
Gopakumar, does not currently have a detailed description and video lecture title. To find out how to reverse the direction of rotation of a series dc motor. We discuss the construction and working principle of a dc motor. Dc motors i tutorial of basic electrical technology course by prof l. Chapter 1 principles of operation of synchronous machines the synchronous electrical generator also called alternator belongs to the family of electric rotating machines. In this lesson well examine motor drives, power electronics devices that vary the speed and torque of a motor under its direction by varying the supplied voltage magnitude and frequency. Some of the slides include animations, which can be seen by viewing the powerpoint file as a slide show. Dc motor introduction, principle and working introduction. Et 332a dc motor, generators and energy conversion devices. These notes has been made by me after watching nptel lectures given by dr. Term may also refer to the winding that is on the rotor. Subhajit bose03 shuvankar das02 binoy mourya09 sushobhan sarkar06 prosenjit debnath35 3. Electrical engineering video lectures tutorials lecture 16 power ports lecture 24 dc machines part 2 lecture 15 power factor lecture 25 dc generators lecture 22 the practical transformer part 3 lecture 18 transformer basic part 2 lecture 27 dc motors lecture 26 dc generators 2 lecture 37 induction motor 2 lecture 20 the. Using flemings left hand rule, we show you how to determine.
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