Ss 120 x f p 120 x 60 8 900 rpm rotor speed motor slip is known, equation 2. Calculate ithe time taken and energy dissipated in the motor during starting. An induction motor is based on the principle of induction of voltages and currents. List and describe the more commonly used equipment in an electric substation. It supplies an induction motor ich has a full load speed of 144wh 0 rpm. Mostafa elshahed objectives learn a brief history of the electrical power systems construction. Power semiconductor drives notes pdf psd notes pdf book starts with the topics introduction to thyristor controlled drives, single phase semi and fully controlled converters connected to d.
Vectorcontrolled induction motor drive elece8402 control of electric drives and power converters 5 ects marko hinkkanen spring 2017 128. Synchronous machines synchronization verify that the phase sequences of the two systems are the same. An induction motor can run at synchronous speed when a it is run on load b it is run in reverse direction c it is run on voltage higher than the rated voltage d e. Application notes vibration diagnostics for industrial electric motor drives the induction motor is the most widely employed industrial electricdrive. A detailed analysis of various methods of starting an ac induction motor and their effects on motor characteristics pdf. Find the percentage slip and number of poles of the induction motor. The rotor is separated from the stator by a small airgap which ranges from 0. All we need to do is to keep daxis stator current constant. The synchronous speed of the motor is given by equation 1. To study how to reverse the direction of rotation in 3 type of motor. Comparison study of vector control of induction motor. Adjust the machine speed with the turbine that drives the generator until the generator voltage frequency is nearly the same as the frequency of the network voltage.
There are also links to powerpoint slideshows that show the animations seen in the presentations. Analysis of induction motor drive with direct torque control scheme using space vector modulation a report submitted in partial fulfillment of the requirements for the degree of master of technology in electrical engineering power electronics and drives by vudatha vinod kumar roll no. Equivalent circuit of an induction motor enables the performance characteristics which are evaluated for steady state conditions. Induction motors induction motors are the most commonly used prime. I write short notes on controlled rectifieraunov05. The starting device adds to the cost of the motor and also requires more space. The previous control strategies good steadystate but poor. In this type of three phase induction motor the rotor is wound for the same number of poles as that of stator but it has less. Identifying the vibration problems that can occur in induction motor drives have an added complexity due to the rotating magneticfields in the machine. Motor current signature analysis mcsa is a condition monitoring technique that is now widely used to diagnose problems such as broken rotor bars, abnormal levels of airgap eccentricity, shorted turns in low voltage stator windings, and certain mechanical problems. List and describe the more commonly used equipment in. When frictional torque in a motor equals the morque from the lorentz force inside the motor, the net torque is zero and a steady operation is achieved. Notes for electrical drives ed by verified writer lecture notes, notes, pdf free download, engineering notes, university notes, best pdf notes, semester, sem, year, for all, study material. Massachusetts institute of technology department of electrical engineering and computer science 6.
Induction motor notes free download faadooengineers. Record all nameplate information for the induction motor. Clicking on the following links will allow you to down load adobe acrobat files of the class lecture notes. Lecture notes in pdf format are available via the school webpage for lecture notes. Motor speed relationship the synchronous speed of an ac motor is the speed of the rotating magnetic field set up by the stator winding synchronous speed rpm 120 x frequency divided by the number of poles. Lecture series on industrial automation and control by prof. If you need a powerpoint viewer follow this link to the microsoft download site.
Fall 2005 ee595s electric drive systems 2 overview of strategies voltsperhertz control constant slip control fieldoriented control. Krishnan written the book namely electric motor drives modeling, analysis and control author r. Induction motor drive elec46 electric drive systems 1. May 18, 2008 lecture series on industrial automation and control by prof. A three phase, 12 pole, salient pole alternator is coupled to a diesel engine running at 500 rpm. Here you can download the industrial drives and applications vtu notes pdf ida pdf vtu of as per vtu syllabus. You should also make a dc measurement of stator winding linetoline resistance using a dmm.
The least expensive and most widely used induction motor is the squirrel cage induction motor. When the load increases the speed of the motor drops and the new operating point of. Motor torque developed is proportional to the square of supply voltage and rotor current is proportional to the supply voltage in induction motors. Application notes vibration diagnostics for industrial. The classification of electrical drives can be done depending upon the various components of the drive system. The main body of the induction motor comprises of two major parts as shows. The interest in sensorless drives of induction motor has grown significantly over the past few years due to some of their advantages, such as mechanical robustness, simple. This drive consists of a single motor, which drives one or more line shafts. It consists of an electric motor motors, a transfer mechanism, an electrical energy converter, and a control system. The 3phase set of currents, each of equal magnitude and with a phase.
Chapter 3 induction motor and different speed control methods page no 3. The rotor will constantly be turning to align its magnetic field with that of the stator field. Singlephase 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. Phasethis represents the number of ac power lines supplying the motor. Electric motor drives modeling analysis and control by r. The induction motor drive is a dynamic nonlinear system with uncertainty in the machine parameters. Pdf control of induction motor drive using artificial. Section ii discusses the concept and definitions regarding with induction motor drives. Hence, the torque to current ratio is directly proportional to the supply voltage, and while decreasing the terminal voltage to control the speed, the torque developed by the motor will also decreases. Analytic design evaluation of induction machines january 12, 2006 c 2005 james l. The increased use of adjustable frequency drives afds for motor control is also making it necessary to nameplate a frequency range, especially for hazardous duty listed applications. Fall 2005 ee595s electric drive systems 2 overview of strategies voltsperhertz control.
Lecture 1 single phase induction motor 1introduction the singlephase induction machine is the most frequently used motor for refrigerators, washing machines, clocks, drills, compressors, pumps, and so forth. For the same output a 1phase motor is about 30% larger than a corresponding 3phase motor. Gopakumar, centre for electronics design and technology, iisc bangalore. Any mechanical load applied to the motor shaft will introduce a torque on the motor shaft. The electric drives with manual control can be as simple as a room fan. Identifying the vibration problems that can occur in inductionmotor drives have an added complexity.
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 to mechanical energy, and vice versa. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Drives general 4 motor operation with converter supply 6 motor current waveforms 6. Lecture 6 three phase induction motors cairo university. Calculating motor ratings for various classes of duty. Adjust the terminal voltage of the generator by changing the dc. Power semiconductor drives pdf notes psd pdf notes. Lecture 35 vector control of induction motor youtube. Syllabus, question banks, books, lecture notes, important part a 2 marks questions and important part b 16 mark questions, previous years question papers collections.
Control of induction motor drive using artificial neural network. Industrial drives and applications vtu notes pdf ida pdf. Induction machine control and simulation c 2003 james l. Ee6601 solid state drives ssd syllabus unit i drive characteristics electric drive equations governing motor load dynamics steady state stability multi quadrant dynamics. Fall 2005 ee595s electric drive systems 36 the plan continued achieving 14. Pdf ee6601 solid state drives ssd books, lecture notes. An induction motor is an asynchronous ac alternating current motor. Variable input voltage variable rotor resistance variable rotor power variable voltage and variable frequency, vvvf drive vsi vf inverter drive variable current and variable frequency, vcvf. This torque is related to the motor output power and the rotor speed and out. When frictional torque in a motor equals the morque from the lorentz force. Motor torque developed is proportional to the square of supply. Vectorcontrolled induction motor drives the previous control strategies good steadystate but poor dynamic response oscillation resulted from the air gap flux vector control fieldoriented control is related to the phasor control of the rotor flux. The aim of this study is to improve tracking performance of the induction motor drive.
Here you can download the free lecture notes of power semiconductor drives pdf notes psd pdf notes materials with multiple files links to download. Tags ida download ida notes industrial drives and applications lecture notes industrial drives and applications notes. Differentiate between the various types of generating electric power stations. A 3phase induction motor has two main parts i stator and ii rotor. They are generally more expensive than induction motor dri ves,but the advantages is that the efficiency is higher,which is tends to lower the life cycle cost. After this lecture and exercises you will be able to. Which motor is preferred for use in mines where explosive gases exist. View notes machine 2 notes from ee 141 at stanford university. Apr 04, 2008 lecture series on power electronics by prof. It is logical that the least expensive, lowest maintenance type motor should be used most often. Openloop operation of dc motors may be satisfactory in many applications. A 2200v,50 hz, three phase,6 pole,yb connected squirrel cage induction motor has following parameters.
K a first course on electric drives, wiley eastern limited, 1998. Squirrel cage induction motor is used in lathes, drilling machine, fan, blower printing machines etc. A controller guarantees a flexible speed regulation and motor protection. To study the different starting methods of of 3 type of motor. Xux, of course, and in a permanent magnet this is usually pictured in terms of.
Charge simulation method is a simple method used in the estimation of electric field intensity for 2 or 3 dimensional fields with efficiency and accuracy. Fall 2005 ee595s electric drive systems 3 voltsperhertz control. The basic idea of an electric motor is to generate two magnetic fields. Comparison study of vector control of induction motor using. Fall 2005 ee595s electric drive systems 2 overview of strategies. Now according to the design, the drives can be classified into three types such as single motor drive, group motor drive and multi motor drive. Lecture notes in electrical drives and traction systems for students. The voltage and current is induced in the rotor circuit from the stator circuit for the operation. Pdf books download book electric motor drives modeling, analysis and control by r. Learning outcomes after this lecture and exercises you will be able to. This lecture will provide information on the following aspects.
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