The induction motor is made up of the stator, or stationary windings, and the rotor. Determination of design performance from above circle diagram. Guidance for the design and performance of ac motors specifically designed for converter. Full descriptions of the circuits and the tests are found in reference 1. The art of design lies in suitable and economic distribution of space to iron, copper, insulation, stator diameter, rotor dimensions, windings and airgap in the machine. If you happen to have a string of blinking christmas lights to use as a prop in illustrating a rotating magnetic field, this would be a good thing to show your students. Quickfield is efficient motor design software and you may find more information and examples about this here. Design and development of three phase induction motor using. This paper explores the construction process of a linear induction motor lim, the basic concepts behind key aspects of linear induction machines construction and the testing process of a working. A three phase induction motor mainly consists of two parts, stator and rotor. Pdf construction of three phase linear induction motor. In this example our motor will have 100 turns per coil. Their design implements the common idea interaction of the magnetic fields with permanent magnets, ferromagnetics and electric currents carrying conductors to produce the. Chapter 14 inductor design university of colorado boulder.
Massachusetts institute of technology 1 introduction this is a concept paper in response to the foa entitled rare earth alternatives in critical technologies. An introduction to electric motors stmicroelectronics. Isbn 9789535108436, pdf isbn 9789535162674, published 20121114. Three phase induction motor design in windows programming. Apr 02, 2009 ac electric motor design software1 author. This manual covers squirrel cage rotor motor where the rotor consists of a set of noninsulated bars that are interconnected by shortcircuit rings. In this paper, a design optimization method is proposed.
In small motors with small diameters the taper on the tooth or slot is significant and tapered slots parallel. Spin the motor by an inverter using voltherz method and set the frequency in such a way that the motor will spin at a constant, and preferably higher speed. Weg electric machinery, wem, induction motors have been specifically designed and manufactured for the most severe industrial applications, such as heavy duty fans, pumps, refiners, compressors, crushers and grinding mill drives. In common for induction machines is that the stator is made up of a stack of steel laminations pressed into a aluminum or cast iron frame, and. The rotor and stator windings are connected in parallel. Identifying the vibration problems that can occur in induction motor drives have an added complexity due to the rotating magneticfields in the machine. 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. Performance analysis of the linear induction motor for the deepunderground highspeed gtx 202 maximum speed should be around 34. In the design of the induction motor, operational characteristics can be determined through a series of calculations.
A metal ring at the ends resulting in a short circuit connects the wires along the rotor axis. A comparative study and investigation of different rotor designs of induction motor for urban use electric vehicle proceedings of 65th thiserd international conference, mecca, saudi arabia, 23rd24 january 2017, isbn. Motor analysis block diagram induction motor starting can be analyzed using electrical, mechanical, and thermal models which interact as diagrammed in figure 1. The aims of this paper is describes the procedure to determine the design of three phase electrical motors. 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. The magnetizing current is independent of the load but is dependant on the design of the stator and the stator voltage. Of particular in terest to this study ho w ev er is the op eration of a. Motor cad will automatically set up the winding pattern for the slot pole combination of this machine. Be careful it can hurt to tangle with a threephase motor. Basically the design of electric motor involves the study of the voltages designing of three phase squirrel cage induction motor for. Performance analysis of the linear induction motor for the. In this section, the construction details of induction motor are discussed. Starting method for induction motors a 3phase induction motor is theoretically self starting.
Design inductor having a given inductance l, which carries worstcase current imax without saturating, and which has a given winding resistance r, or, equivalently, exhibits a worstcase copper loss of. Analysis and modelling of an induction machine with a. Motion and temperature heat control are paramount in energy. Then, different methods to improve the efficiency of the motor are investigated and the performance of the machine is studied after each modification.
Pdf design and manufacturing of a singlephase induction. It enables students to verify their design and analyze the performance of machine by changing relevant parameters in less time. April 11, 20 6 of 10 the impedances of the circuits shown in figure 5 are found from noload and blockedrotor tests. Abstract in this paper, computer aided design and transient finite elements analysis fea of an inducton motor im areperformed for both 2d and 3d models. The optimal design of a multiflux stator winding to improve motor efficiency and power factor in a wide load range is. The purpose of this project is to increase use of lim in industry for transportation purpose. Induction motor theory jerry bednarczyk, pe course content introduction the ac induction motor is well suited to applications requiring constant speed operation. Using magnetostatic fea to examine of the performance of im is recently well known and accepted method. The concept of the rotating magnetic field is central to ac motor theory, so it is imperative that students grasp this concept before moving on to more advanced concepts. These motors are suitable for all general applications where an open machine is not applicable due to severe environments such as excessive dirt, dust andor moisture.
Insidepenton com electronic design adobe pdf logo tiny. The stator of an induction motor consists of 3phase windings, which when connected to a 3phase supply creates a rotating magnetic field. Motoranalysis is based on automated finite element analysis fea simulations and establishes a complete set of tools for design and analysis of electric motors and generators. The optimal design of a multiflux stator winding to improve motor efficiency and power factor in a wide load range is proposed using genetic algorithm. Ac induction motors are built by manufacturers according to established national electrical.
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. The summation of all torques acting on the motor shaft comprises the mechanical model. This conversion is usually obtained through the generation of a magnetic field by means of a current flowing into one or more coils. Department of electrical engineering dit, university, dehradun, uttarakhand references. Motoranalysis electric motor and generator design and. Main support glossary electric motor design software. The rotor and stator are each connected from a different power supply, this gives another degree of freedom for controlling the motor over the shunt. Designing of three phase squirrel cage induction motor for.
Ac electric motor design software softbit presents an easy way to design lt, 3 ph, tefc, squirrel cage ac electric motors with the help of ac electric motor design software. It contains learning objectives, slidebyslide lecture notes, case studies, test. This manual is intended as a guide for electrical engineers and designers hereafter referred as. The rotor will constantly be turning to align its magnetic field with that of the stator field. Simotics lowvoltage motors cover a wide range of motors from 0. First, a preexisting model of the motor is analyzed and improved. Introduction to induction motor the engineering projects. This manual is specific to a powerpoint slide deck related to module 4, architectural design and construction. Mec design and construction of a pulsed linear induction motor.
Lowvoltage electric motors siemens electric motors. The project will shows prototype of linear induction. This paper presents design and analysis of a three phase induction motor drive using igbt. 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. The induction machines design handbook crc press book.
The torquespeed characteristic of an induction motor. The basic idea of an electric motor is to generate two magnetic fields. Draw a vertical line bc representing the rated op of the motor s per the power scale. This document also examines control principles using hall sensors for both singlephase and threephase. For this machine design will have 1 strand in hand for each turn in the slot. In the electrical model, the voltage, v, and the slip, s, determine the rotor current. Motivated by the need of energyefficiency improvements, process optimization, softstart capability and numerous other environmental benefits, it may be desirable to operate induction motors. New start for nonre motor designs that meets doe 2020 cost and performance targets. The low rating lim are of low cost, low energy consumption, high speed, and low pollution. Design of a single sided linear induction motor slim using a user interactive computer program a thesis presented to the faculty of the graduate school university of missouricolumbia in partial fulfillment of the requirements for the degree master of science by sarveswara prasad bhamidi dr. 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. Performing these calculations can help the engineer. Brushless dc motor fundamentals application note monolithic.
This tutorial will introduce the user to the fundamental electrical and mechanical principles of ac electric induction motor design and application. The 3phase set of currents, each of equal magnitude and with a phase. Introduction to ac machine design, 2 ed university of wisconsinmadison. Computer aided design and transient finite elements analysis. The unique design, firstgrade material and excellent workmanship make teco motors last much longer and give costefficient operation. The originality lies in combining a motor design program and employing a hybrid genetic algorithm hags technique to obtain the maximum of objective function such as the motor efficiency. The current drawn by the induction motor has two components. Design and development of three phase induction motor. Different electric motor design are proposed in recent years in literature, different control technique combined with energy storage systems. Specific emphasis will be given to pump applications.
The motor, used in this thesis work, is a two pole induction machine composed of a cage rotor and a stator containing windings connected to the 3phase power supply. Basically the design of electric motor involves the study of the voltages designing of three phase squirrel cage induction motor for good efficiency. The electric energy generated purchased by consumers for different needs. The linear induction motor is designed for high speed operation. Far too often motors are mismatchedor oversizedfor the load they are intended to serve, or have been rewound multiple times. The least expensive and most widely spread induction motor is the socalled squirrel cage motor. Electric motor design software yeadon energy systems, inc. Design of a lowmass hightorque brushless motor for. A successful salesman for general electrics motor division once remarked to one of your instructors that, when asked by a customer how a motor. Therefore, electric motor design software should combine all these types of analysis, and is often based on the finite element method. The following steps describe the method to determine the high number of motor pole pairs.
The motor designed from this thesis is compared to motors currently used by the group when quantifying improvements made. There are various methods suggested to improve efficiency and power factor of an induction motor. You just need to enter a few preliminary inputs and click a button. Induction motor torquespeed characteristics figure 6. Electric motors are devices for conversion of the electrical energy into mechanical energy. Motor design limited mdl is a world leader in the development of advanced software design tools for electrical machines. Thirdly, a complete optimization of the design is carried out with the goal of developing an ie4 im compatible with iec. Motoranalysis is available as a maltabbased application or as a standalone program working without matlab. Electric motor design software yes currently has the following motor design software available.
The motors can be used either direct on line or for converter operation in combination with the wide range of sinamics converters. This will link and cut the rotor conductors which in turn will induce a current in the rotor conductors and. Harley and yao duan georgia institute of technology november, 2009. Electric energy and induction motors the level of prosperity of a community is related to its capability to produce goods and services. The software is made user friendly as it provides a checklist, an easy design data supply and online design tips in each module. To study design and winding technique of linear induction motor. Picking up where the first edition left off, this book taps into the authors considerable field experience. Traditional design of cage rotor induction motors ronald g. Mdl uses its expert knowledge of electric motor design to provide software and support to electric machine designers at some of the worlds most prestigious companies. Application notes vibration diagnostics for industrial electric motor drives the induction motor is the most widely employed industrial electricdrive. Design and construction of a pulsed linear induction motor summary in tro duction a t ypical coil gun con v erts electrical energy to linear kinetic b y using a wire w ound stator and electromec hanical principles to accelerate a ferromagnetic or wire w ound coil armature. This paper presents a simple, practical, and effective design, analysis, and selection approach of a capacitorrun single phase induction motor as a manufacturing aid tool at the early stage of the design.
Electric motor design software quickfield fea software. First, we have to act by an appropriate choice of the motor sizing, or by operating the motor in an efficient way, so using external intervention, 5. Second, by acting on the motor design, which means increasing the volume of the active material iron and copper, using longer machines in order to keep the same slot design, selecting lower. Nov 11, 2011 the linear induction motor is designed for high speed operation. Archana nanoty principal, djmit 3192014 emdii induction motor design viii sem electrical. This application note discusses the basics of an ac induction motor.
Yes electric motor design software enables you to design blds, universal, pmdc, shaded pole ac, and ac induction motors inhouse. Click on the printable brochure below to view additional information and screenshots for each. You can find the optimum lowvoltage electric motor in the. The actual magnetizing current of the induction motor. The winding configuration for one pole of the machine is pictured below in figure 3. If there is possibility i would like to join to future. Prototype development model for conveyor using linear. A typical asynchronous motor is shown in figure 71. Mechanical energy what is an electric motor an electric motor is a device converting electrical energy into mechanical energy usually a torque. It is a 16 bit highperformance digital signal controller dsc. Department of electrical engineering dit, university, dehradun, uttarakhand. The lims 3phase coil assembly can be directly connected to the ac line for single speed applications or to an adjustable frequency drive for variable speed control.
Induction motor is an ac electric motor, having a stator and a rotor just like other motors, but the working principle is a little different which would be discussed further. Determining electric motor load and efficiency most likely your operations motors account for a large part of your monthly electric bill. Simple analysis for brushless dc motors case study. They conform to iec and nema standards and they are highly efficient. Design and development of three phase induction motor using written pole technology doi. Electric motors for machines and mechanisms mits fab lab. Page 2 of provide a motor that is best suited to a particular application. Induction motor driving a centrifugal compressor advantages n simple and rugged design n low cost. Motors specification of electric motors marshall wolf automation. The induction machines design handbook, second edition satisfies this need, providing a comprehensive, selfcontained, and uptodate reference on single and threephase induction machines in constant and variable speed applications.
Application notes vibration diagnostics for industrial. 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. The magnetization current im flowing in the motor s equivalent circuit fig. Aug 20, 2004 the particular motor of interest is intended to be a 2 hp motor running on a 220 v rms linetoline, 50 hz, 3phase supply. In general, the induction motor is cheaper and easier to maintain compared to other alternatives. Threephase induction motors are the most common and frequently encountered machines in industry simple design, rugged, lowprice, easy maintenance wide range of power ratings.
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