An induction motor also known as an asynchronous motor is a commonly used ac electric motor. Today we are going to made available a powerpoint presentation file for all. List and describe the more commonly used equipment in an electric substation. The im is also cheaper than most other electric motors. The adobe flash plugin is needed to view this content.
All we need to do is to keep daxis stator current constant. Traditional design of cage rotor induction motors ronald g. Free download induction motor seminar ppt, pdf report. Covers applications from a few watts to mega watts. An induction motor can be treated as a rotating transformer i. The alternating current ac induction motor is one of the most rugged and most widely used machines in industry.
The basic diagram view a shows a circle with two leads labeled t1 and t2. Ac induction motors how ac motors work explain that stuff. The induction motor essentially consists of two parts. 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. 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. The typical base speed of the four pole induction motor varies between 1420 and 1480 rpm at 50 hz, while the synchronous speed is 1500 rpm at 50 hz. Induction motor drive elec46 electric drive systems 1. Artificial neural network based controller for speed control of an induction motor. Induction motor protection system the circuit diagram of the threephase induction motors is shown in the figure below.
For most shore facility applications, this is the case. Induction motor seminar ppt, pdf report study mafia. Pdf artificial neural network based controller for speed control. Fault detection and protection of induction motors using. 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. Induction motors ppt free download as powerpoint presentation. Motion and temperature heat control are paramount in energy. Induction motor powerpoint presentation free to view id. 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. Induction motors in practice what controls the speed of an ac motor. Induction motor speed at what speed will the im run. Fault detection and protection of induction motors using sensors article in ieee transactions on energy conversion 233. A free powerpoint ppt presentation displayed as a flash slide show on id. 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.
The larger the motor power, the more severe this phenomenon. Introduction types of electrical machines types of 3ph induction motor basic principle working principle compnents of induction motor application comparision between 1ph i. Pdf in this paper, an implementation of intelligent controller for speed. 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. The basic idea of an electric motor is to generate two magnetic fields. But producing goods and services is strongly related to the use of energy in an intelligent way. Pdf the field oriented control of induction motor using fpga. Sep 27, 2016 at full load power factor of an induction motor ranges from 0. The rotor of an induction motor can be a squirrel cage rotor or wound. Single phase and three phase are the two types of an ac induction motor. The start push button is a momentary contact switch that is held normally open by a spring. Consider the working of a motor for a better understanding of these indicators.
An electrical motor is a device that has brought about one of the biggest advancements in the fields of engineering and technology ever since the invention. Download 3 phase induction motor powerpoint presentation. Premium efficiency motor selection and application guide. Squirrel cage induction motors draw 500% to over % of full load current flc during starting. The supply is connected to the stator and the rotor received power by induction caused by the stator rotating flux, hence the motor obtains its name induction motor.
Ppt presentation on speed control of induction motor. Ac induction motors are also the most common motors used in main. Fall 2005 ee595s electric drive systems 36 the plan continued achieving 14. Pdf construction of three phase linear induction motor. There are two major components of an ac induction motor. This paper has realized the field oriented control foc of an induction motor.
Electric energy and induction motors the level of prosperity of a community is related to its capability to produce goods and services. While this is not a severe problem for small motors. Differentiate between the various types of generating electric power stations. When a three phase induction motor connected to a single phase power supply using the steinmetz connection operates in a practical noload condition, not all.
Department of energys office of energy efficiency and. A successful salesman for general electrics motor division once remarked to one of your instructors that, when asked by a customer how a motor. Testing can be conducted without interrupting the normal operation of the motor, and in fact should be performed when the motor is under a minimum of 70% load. Torquespeed characteristics of squirrel cage induction motor iitbee. Electric motor an electric motor is an electromechanical device that converts electrical energy to mechanical energy. The actual fullload slip of a particular motor is dependant on the motor design. Induction motor theory jerry bednarczyk, pe course content introduction the ac induction motor is well suited to applications requiring constant speed operation. Ppt induction motor powerpoint presentation free to. The three phase induction motors are simple in construction, rugged, low cost and easy to maintain. Be careful it can hurt to tangle with a threephase motor. Difference between induction motor and synchronous motor circuit.
Introduction to induction motor instrumentation and control. 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. Advantages of 3 phase induction motor generally easy to build and cheaper than corresponding dc or synchronous motors induction motor is robust. The rotor will constantly be turning to align its magnetic field with that of the stator field. The electric energy generated purchased by consumers for different needs. The speed of the motor, starting and operation, the efficiency of both the motors, its cost, usage, and applications.
Mostafa elshahed objectives learn a brief history of the electrical power systems construction. If rotor runs at the synchronous speed, which is the same speed of the rotating magnetic field then the rotor will appear stationary to the rotating magnetic field and the rotating magnetic field will not cut the rotor. Motor current signature analysis mcsa is a proven and accepted method for determining the condition of a motors current carrying components. For this motors, we require three phase power supply, whereas thus three phase power must be supplied in a sequence. An induction motor always operates at a speed lower than the synchronous speed because the rotating magnetic field that occurs in the stator will generate flux in the rotor that will cause the rotor to rotate, but due to the delay of the flow current in the rotor with current flow in the stator, the rotor will never reach its rotating magnetic field speed, that is, the synchronous speed. In an induction motor, the electric current in the rotor needed to produce torque is obtained via electromagnetic induction from the rotating magnetic field of the stator winding. Threephase induction motors authorstream presentation. In general, the induction motor is cheaper and easier to maintain compared to other alternatives. So, now principle of induction motor right so, the operation of three phase induction. This publication was prepared by the washington state university energy program for the u.
Scribd is the worlds largest social reading and publishing site. Analytic design evaluation of induction machines january 12, 2006 c 2005 james l. An induction motor compared to a dc motor has some major advantages such as absence of brushes, commutator segments, rugged construction, being cheap. The stator works as the primary while the rotor works as the secondary. The current drawn by the induction motor has two com. Induction motors ppt transformer electrical engineering. Pwm speed control of acsingle phase induction motor. Nov 03, 2019 an induction motor also known as an asynchronous motor is a commonly used ac electric motor. Magnetic contactor starter essentially consists of a set of start and stop push buttons with associated contacts, overload and underload protective devices. The induction motor is made up of the stator, or stationary windings, and the rotor.
It is logical that the least expensive, lowest maintenance type motor should be used most often. Conduct locked rotor tests on 3phase induction motors conduct noload tests on 3phase induction motors. Generally, it is known as the asynchronous motor because its running speed is less than its synchronous speed. Ac induction motors are also the most common motors used in main powered home appliances. Massachusetts institute of technology department of electrical engineering and computer science 6. The 3phase set of currents, each of equal magnitude and with a phase. In synchronous ac motors, the rotor turns at exactly the same speed as the rotating magnetic field. Remove this presentation flag as inappropriate i dont like this i like this remember as a favorite. Let us assume that the threephase supply given to the motor has a phase sequence of ryb, then the motor. Just as in the threephase motor diagram, the motor shows the power supply lines as being identified with the t. Pdf this paper has realized the field oriented control foc of an. Introduction to induction motor the engineering projects. The stator is composed of laminations of highgrade sheet steel. Electrical motor coverts electrical energy into mechanical energy and electrcal.
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