Project overview design, construct, and test a linear induction motor lim powered by a threephase voltage input rotate a simulated linear track and cannot exceed 1,200 rpm monitor speed, output power, and input frequency controllable output speed 7 5. Aug 15, 20 the highly reliable reusable launch system would use the linear induction motor launch system for its first stage and to a speed of about mach 1. Adaptive backstepping controller design for linear induction motor position control. 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. The singlesided linear induction motor which is the subject of this project is well discussed in their book. The most recent book on lims, by gieras 14, covers. Lim is an advanced version of rotary induction motor which gives a linear translational motion instead of.
Induction motor has the same physical stator as a synchronous machine with an alternate rotor development. Linear motors are electric induction motors that produce motion in a straight line rather than rotational motion. Linear induction motor used for two wheeler application. The linear induction motor is designed for high speed operation. Force engineering ltd linear induction motor control. Induction motor might be worked as either motors or generator. The big difference is that a linear motor propels something in a straight line instead or rotating a shaft. This video demonstrates the working model of using linear induction motor in movement of train. Performance analysis of the linear induction motor for the. Ive been reading literature until now to understand the principle of the lim, and the objective of my project is to approximate a very. Pdf construction of three phase linear induction motor. Linear engine, how to make linear motor step by step, science school project 2018 related videos 1.
Characteristically, a linear motor s active section has ends, whereas more conventional motors are arranged as a continuous loop. Linear motors are used to propel vehicles like trains, monorails and amusement park. Jul 15, 2019 a linear motor is effectively an ac induction motor that has been cut open and unwrapped. The purpose of this project is to increase use of lim in industry for transportation purpose. The project was part of a research initiative at the emerson energy conversion lab, which operates as part of umr. Linear induction motor a linear induction motor lim is an advanced version of rotary induction motor which gives a linear translational motion instead of the rotational motion. Induction motor basics, single phase and three phase.
To study design and winding technique of linear induction motor. Induction motor speed controller project nevon projects. It is very easy to make because you dont require to many things to complete this project. For example, brushless linear motors capable of forces to 2,600 n or more work well in heavy robotics or materialhanding applications.
A linear motor works on the same principles as a regular motor using electricity and magnetism to produce physical movement. Nov 11, 2011 the linear induction motor is designed for high speed operation. Mar 22, 2019 the thrust produced by a linear induction motor is a factor of the supplied voltage, the amount of slip, and the size of the air gap, as well as the influence of end effects. If we cut the stator of a polyphase induction motor and lay on a flat surface, it forms the primary of the linear induction motor system. The monorail is powered by a linear induction motor lim. A linear actuator is a device that converts rotational motion into linear motion. They have since been superseded by linear synchronous motor technology the first use of linear induction motors for launching a train was in 1996. Sensorless speed estimation of induction motor in matlab. A linear induction motor lim is an asynchronous motor that works on the same general principle as that of other induction motors, but the structure of it is altered. What is a linear induction motor and how does it work. You can be easy to arrange the copper rail and the magnet to the piece of wood.
The monorails at euro disney are powered by lims, as is the vancouver rapid transit system. Alan foster 2 introduction to linear induction motors lims a lim is basically a rotating squirrel cage induction motor opened out flat. Linear engine, how to make linear motor step by step. Aug 23, 2016 using the shop products, i tried to make the principle of the linear motor car. The stator is laid out in the form of a track of flat coils made from aluminum or copper and is known as the primary of a linear motor. 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. Nov 04, 2016 vivek brahmbhatt already has explained very nicely the construction of lim. Electrical engineering project linear induction motor youtube. A linear induction motor or lim is a special type of induction motor used to achieve rectilinear motion rather than rotational motion as in the case of conventional motors.
In electrical equipment the anchors winding would be induced by the magnetic field, although the rotor takes this part in threephase induction motors. Power jack motion professional motion control solutions. Electric motor electric motor linear induction motors. However, linear motors are not necessarily straight. We are going to make 12 electromagnets using the iron wire and magnet wire. Construction of a linear motor or linear induction motor. Project design the proposed project was designed with the main goal of having a high degree of modularity. As electric linear actuator manufacturers, we aim to supply simple, but efficient linear actuators with improved product functionality. In this project, we will be designing and experimenting with a variety of topologies such as dslim, slim, and quad stator design.
The application of pulsed, linear induction motor technology for high speed trains is being assessed in a research project at sandia national laboratories. Performance analysis of the linear induction motor for the deepunderground highspeed gtx chanbae park, hyungwoo lee and ju lee abstract in order to develop a deepunderground great train express gtx in south korea, the specifications decision and development of a traction control system including an inverter and a. A linear induction motor lim is a form of electromagnetic propulsion containing no moving parts. Construction of a pulsed linear induction motor induction launc hers feasible within the scop e of a small undergraduate pro ject. Linear ac induction motors output 2,000 n to satisfy heavyconveyor parameters.
Pdf adaptive backstepping controller design for linear. However, the direct current homopolar linear motor railgun is another high acceleration linear motor design. This is interesting development of a conventional induction motor. And because linear induction motors have lower efficiencies, cooling can have a.
First of all, i am going to discuss about the construction of 3 phase induction motor and then i will throw some light on its working. Characteristically, a linear motors active section has ends, whereas more conventional motors are arranged as a continuous loop. In this project you will learn how to make simple linear motor with thin aluminium pipe. Pdf a low cost linear induction motor for laboratory experiments. It performs linear motion instead of rotary motion as in a conventional induction motor. Linear induction motor is normally referred as linear motor. In this project initially we will consider how induction motors are used in present automobile systems and its usage in different fields are explained. Find these and other hardware projects on arduino project hub. Simple linear motor how to make a simple linear motor. The rotor takes the form of a moving platform known as the secondary.
And we will cover details of different types of linear motors and there functionality. A linear motor is effectively an ac induction motor that has been cut open and unwrapped. Linear induction motor limo modular test bed for various. It is a special purpose motor that is used for linear motors. The basic design and construction of a linear induction motor is similar to a three phase induction motor, although it does not look like a conventional induction motor. This project is called seraphim, for segmented rail phased induction motor. Advantages of a segmentable linear motor axis ild series. Design and fabrication of single sided linear induction motor for.
The shape and operation of a linear induction motor can be visualized as depicted in the figure by making a radial cut in a rotating induction machine and flattening it out. Prototype development model for conveyor using linear induction. The method i have selected in my project is adaptive method. They are a little trickier to make but will need singlephase or threephase ac power to make them work.
Induction motors have been used widely in different fields ranging from domestic appliances to industrial machinery. I would just like to add some practical applications of lim. Linear induction motor lim is an asynchronous motor, working on the same principle an induction motor works, but is designed to produce the rectilinear motion, unlike the rotary movement produced by a motor. Normally lim is used to make a motion frictionless absolutely. Using the shop products, i tried to make the principle of the linear motor car.
Oct 05, 2016 three phase induction motors are further divided into two types. Linear induction motors lim are used in many different applications, from moving sliding doors to high speed trains around the world. How to make dc motor at home, homemade electric motor. The thrust produced by a linear induction motor is a factor of the supplied voltage, the amount of slip, and the size of the air gap, as well as the influence of end effects. A polyphase linear induction motor comprising a primary member having magnetic material formed with a polyphase winding and, for cooperating with the primary member, a secondary member comprising electrically conductive material backed by further magnetic material is so arranged that the working flux passes in low reluctance paths lying substantially in planes directed transversely of the motor. After that, a secondstage ramjet engine would propel the spacecraft to mach 4, where a rocket would complete the trip to orbit, kloesel said. And because linear induction motors have lower efficiencies, cooling can have a measurable effect on the motors ability to produce thrust. A linear induction motor lim is an alternating current ac, asynchronous linear motor that.
I havent found much of anything concerning the actual building of the linear induction motor, not even. Adaptive backstepping controller design for linear induction. Linear induction motor and levitating boat the art and. Vivek brahmbhatt already has explained very nicely the construction of lim. This linear induction motor is thoroughly designed and implemented by our group as fyp in electrical engineering. In this paper, the mover position control of a linear induction motor using an adaptive backstepping control design based on filed orientation is proposed. It explains what linear induction motors are used for but the definition of a linear induction motor doesnt state that its used for a certian purpose. The success of the motor will be determined by six different nonfunctional requirements, and overall by the control of rotation of a large diameter wheel that. Bojan djokanovic, a graduate student at the university of missourirolla, used energy chain cable carriers and chainflex continuousflex cables to facilitate sensorless position control on a linear induction motor drive. The result is a flat stator, or upper section, of iron laminations.
Mar 01, 2018 linear engine, how to make linear motor step by step, science school project 2018 related videos 1. As i mentioned earlier in my article on introduction to induction motors, there are two types of induction motors, single phase induction motor and 3 phase induction motor 3 phase induction motor is the one which operates on three phase ac supply. In the little diagrams above, we have a squirrel cage ac induction motor, a permanent magnet synchronous machine, and a synchronous motor. 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. Characteristically, linear induction motors have a finite primary or secondary length, which generates endeffects, whereas a conventional induction motor is arranged. Linear synchronous motor project gutenberg selfpublishing. Project hi, im in engineering sophomore year, i have to build a triphase lim for a project in june yet have no prior experience building any motors or building much at all. The most obvious advantage of linear motor is that it has no gears and requires no. Power is nothing without control and whether it is for a roller coaster, a public transportation system or an industrial use, projects. The pulsed linear induction motor university of edinburgh. Mec design and construction of a pulsed linear induction motor.
The highly reliable reusable launch system would use the linear induction motor launch system for its first stage and to a speed of about mach 1. The main purpose of this project is to design and fabricate a linear induction motor lim that can generate motion and force in a linear direction. Typically lim systems launch the roller coaster train from the station extremely quickly. Brazilian sml project, maglevcobra uses for the propulsion a short primary linear induction motor lim with a squirrel cage secondary type. Linear motors come in different mechanical and electromechanical arrangements to satisfy the requirements of different applications. Linear induction motors are quite an engineering marvel, to convert a general motor for a special purpose with more or less similar working principle, thus enhancing its versatility of. Today, i am going to write about 3 phase induction motor.
Induction motor speed control project serves this purpose of controlling the speed of. Iron wire gauge magnet wire copper wire with clear, thin insulation in order to fit in more turns procedure. A linear induction motor provides linear force and motion rather than rotational torque. Finite element analysis of the forces developed on linear induction. One is a single sided linear induction motor slim, and the other type is a double sided linear induction motor dslim. Linear induction motor used for two wheeler application is used to devolpe two wheeler using linear induction motor. In a traditional electric motor, the rotor rotating part spins inside the stator static part in a linear motor, the stator is unwrapped and laid out flat and the rotor moves.
Using this method, i have controlled the speed of induction motor using matlab software. Disassemble an old printer in this case a dot matrix and drive the stepper motors for linear motion or rotation. May 31, 2016 linear induction motor lim is an asynchronous motor, working on the same principle an induction motor works, but is designed to produce the rectilinear motion, unlike the rotary movement produced by a motor. The linear induction motor test bed has fully interchangeable rotors, application specific rotor. A linear motor is an electric motor that has had its stator and rotor unrolled thus instead of producing a torque it produces a linear force along its length. Pdf in this paper we present a linear induction motor lim.
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