The speed of the ac induction motor is adjusted by the frequency variation of the ac power to the motor. Mechanical energy what is an electric motor an electric motor is a device converting electrical energy into mechanical energy usually a torque. The commutation process, types, starting of the motor, a number of terminals. As previously, we have covered a lot of important topics. This conversion is usually obtained through the generation of a magnetic field by means of a current flowing into one or more coils. Free motor control books download ebooks online textbooks. Large motors have an output of 3 kw kilowatt or more and are normally three phase machines. Upon completion of basics of ac motors you should be able to.
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. An ac motor of this type may be part of a pump or fan or. Since the car runs on compressed air it is environmentally friendly. Matpower is used by power system researchers, educators and professionals around the world from academia, government, and industry. There are many types of ac motors, but this course focuses on threephase induction motors, the most common type of motor used in industrial applications. Generally, it is known as the asynchronous motor because its running speed is less than its synchronous speed. Figure 81 shows the motor output torque as a function of shaft speed with full rated voltage applied to the motor. Bee1101 1 st and 2 nd semester syallabus modulei 10 hours dc networks.
Free, opensource tools for electric power system simulation. Transients in rl, rc and rlc circuits with dc excitation. Read online now motor rewinding procedure ebook pdf at our library. The 3phase set of currents, each of equal magnitude and with a phase. Get motor rewinding procedure pdf file for free from our online library pdf file. And, the stepper motor, a digital version of the motor, is driven by alternating current square waves, again, generated by solidstate circuitry.
Download air powered cars ppt free download for cse students. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. This electric motor control circuit training software is quite detailed. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Explain how this motor can be operated as either a synchronous motor or a plain induction motor. By far the most commonly used ac motor is the induction motor. The rotor terminals are connected to three slip rings which turn with the.
To get any of these images, simply click on motor image below. Introduction to basic notions on electric power 5 electric current conductor lines of force fig. 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. Explain the concepts of force, inertia, speed, and torque explain the difference.
Find powerpoint presentations and slides using the power of, find free presentations research about ac motor ppt. The subject of mathematics is also a need of all people to pass their lives smoothly as addition, subtraction and division or multiplication are basic ideas for daily life dealing. The basic idea of an electric motor is to generate two magnetic fields. View and download powerpoint presentations on ac motor ppt. Electric motors and controls training electric motors and controls training certificate course software. Introduction types of electrical machines types of 3ph induction motor basic principle working principle compnents of induction motor application comparision between 1ph i.
An introduction to electric motors stmicroelectronics. Ac motors,motor control and motor protection bill brown, p. Developed in 1998, motor cad is used by major motor manufacturers and universities worldwide. Dc motor, generators and energy conversion devices lecture notes. This type of motor operates like a twophase ac motor and is used to drive actuators. Construction and principle of operation of singlephase transformer, emf equation, singlephase autotransformer. 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. Applications of the motor, usage of brushes and the maintenance cost of the motor. Introduction to ac motors ac motors electronics textbook. Developed in 1998, motorcad is used by major motor manufacturers and universities. Inverter not only adjusts the speed but also adjusts the voltage to the motor. Its operation is based on the principle that when a current carrying conductor is placed in a. Electric motors and drives fundamentals, types and applications third edition austin hughes senior fellow, school of electronic and electrical engineering, university of leeds amsterdam boston heidelberg london new york oxford paris san diego san francisco singapore sydney tokyo newnes is an imprint of.
This final thesis will mostly be dedicated to induction motors but also to synchronous permanent magnet and reluctance motors. Basics of ac motors ebook pdf download siemens step course. Basics of ac motors ebook pdf download siemens step course good one. Induction motor seminar ppt, pdf report study mafia. Matpower free, opensource tools for electric power. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Because they convert electrical energy to mechanical energy, they are the interface between the electrical and mechanical systems of a facility. Solenoids, timers, sensors, relays, troubleshooting, even an introduction to plcs is included. A successful salesman for general electrics motor division once. May 02, 2014 engineers often need electric motor images and pictures for use in their reports and presentations. This course covers basics of ac motors and related products. There are two types of induction motors, one with wound type rotor, also called slipring motor and another one with squirrelcage rotor. One type of directcurrent motor can also operate on alternating current. Motor cad is the worldleading dedicated electric motor design software package for the multiphysics simulation of electrical machines across the full torquespeed range.
To show the performance of a motor when connected to a load, a typical speedtorquecharacteristic for a fan is plotted along with the motor speedtorque characteristic in figure 82. Pdf motor vehicle mechanic free ebooks download free. Matpower is downloaded well over 20,000 times per year, from all over the world. Describe how a squirrel cage motor is built, and classify it as either an induction motor or a synchronous motor. The average value is the amount of voltage that would be indicated by a dc voltmeter. List and describe the more commonly used equipment in an electric substation. Ac servo motor ac servo motor is an ac motor that includes encoder is used with controllers for givin g closed loop control and feedback. You can find common popular electricity diagrams and slide designs with good backgrounds including daisy chain diagrams, cable connectors and electricity shapes for powerpoint. Jan 03, 2019 jan 3, 2019 pdf motor vehicle mechanic free ebooks download. Ppt induction motor powerpoint presentation free to. The brushless dc motor, actually an ac motor, is replacing the conventional brushed dc motor in many applications. This application note discusses the basics of an ac induction motor. The direction is changed by reversing the polarity on the leads.
Motorcad is the worldleading dedicated electric motor design software package for the multiphysics simulation of electrical machines across the full torquespeed range. Dc motor principle a machine that converts dc power into mechanical energy is known as dc motor. The rotor will constantly be turning to align its magnetic field with that of the stator field. The motor is controlled by applying a voltage to the motor leads. A free online demo of this course is at free online electric motors and controls training. Mostafa elshahed objectives learn a brief history of the electrical power systems construction. An inverter is nothing but a motor control which is used in adjusting the speed of an ac induction motor. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects.
Jun 04, 2017 inverter ppt pdf powerpoint presentation. Winner of the standing ovation award for best powerpoint templates from presentations magazine. A greater understanding of ac electric motor control better once you fully understand the theory of each electric motor type. This system is used where very sensitive speed control of motor is required e. Dc motors although ac motors are used in most of the cases, dc motors have many applications and used for multipurpose applications. Engineers often need electric motor images and pictures for use in their reports and presentations. This repository has a number of electric motor images for such uses. It is true that single phase motors are less efficient substitute for 3phase motors but 3phase power is normally. A wound rotor, has a 3phase winding similar to the stator winding. Its most common application is in such power tools as an electric drill.
The figure above shows the family tree of the ac motors described in this chapter. The direction of the lines of force is given by the law of the screwdriver. Note only the free demo is browser dependant, the purchased software is standalone, compatible with all xpwin10 pcs. Although ac induction motors are easier to design than dc motors, the speed and the torque control in various types of ac induction motors require a greater understanding of the design and the characteristics of these motors. 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 machines, power balance and. The arrangement of this system is as shown in the figure at right. Download free electricity powerpoint templates and slide designs with creative diagrams for electricians and professionals. Kirchhoffs laws, node and mesh analysis, deltastar and stardelta transformations. Today we are going to made available a powerpoint presentation file for all. Fundamentals of alternating current 3 figure 121 sinusoidal wave values. Difference between ac and dc motor the ac motor and the dc motor are differentiated on the various factors like the source or the nature of the power used in the motor. The maximum torque is limited by the current rating of the motor and it is obtained at zero speed startup.
Download free powerpoint themes and powerpoint backgrounds for your presentations. Download 3 phase induction motor powerpoint presentation. Power up the motor normally and determine the noload rpm when the motor, as viewed from the front, is rotating clockwise cw. Differentiate between the various types of generating electric power stations. Be careful it can hurt to tangle with a threephase motor.
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