Speed Control Of Linear Induction Motor

2172 words - 9 pages

Executive Summary
VVVF drives used to control the speed of LIM, many industrial automation worldwide such as Trains drives, Automatic Screen Door, Moving Walkway, Lift and Escalator, etc., varying the speed of the drive may save energy compared with other techniques for flow control.

This mid-term report prepared for detailing how to design and build the structure of LabVIEW simulation for speed control of Linear induction motor and explaining the characteristic of V/F Speed control for Induction motor obtain the data by LabVIEW.

The design and build of simulation has two parts, part one is simulation of LED indicator for motor speed recognize and part 2 is simulation of V/F speed control of Linear induction motor. Firstly, design a control function in front panel of LabVIEW, it use for a control system interface and show the LED indicator for speed control of frequency variable. Secondly, build up a simulation module of the block panel, which function on the palette indicate the frequency calculations. After set the value of the frequency by turning the “Frequency Variable” knob, the value will be sent to the Logics used. It is a human machine interfaces design software that is user friendly.

Table of Contents
Introduction 3
Literature search 4
Methods of Achieving Sustainability 4
Evidence of the Problem 4
Advantages of Energy Saving 4
Reference Design 5
Technical work 6
I. Lab VIEW programs 6
 Design of Software 6
 Part one - Control Panel 7
 Part two – Oscilloscopes Panel 7
Block diagram 8
II. KKVF-J Inverter 9
III. PLC of Mitsubishi FX2N 9
IV. Linear Induction Motor 9
Circuit Diagram: 10
System Block diagram: 11
Results and Conclusion 12
Project Timeline 16
Estimate of Budget Cost 17
References 18
Appendices 20


Nowadays, the Railway as an important traffic hub wins obvious Transportation advantages in the world, the Quantity of Customer with a daily circulation of Over 2.3 million passengers, Hong Kong MTR transporting by 1 of 3 Customer every day. Thus, the relevant equipment for interior of MTR Station to dredge the passengers crowd was important. Wherein the many equipment of Industrial Automation worldwide were used the V/F Speed Control of Linear Induction Motor which the Trains themselves, Automatic Screen Door, Moving Walkway, Lift and Escalator etc. Moreover, the MTR would also produce energy in a much cleaner, more energy saving, and more sustainable manner. The neglect of this energy source is restricting the MTR from increasing its sustainability and accessibility.

Literature search
Methods of Achieving Sustainability
In this project suggests several ways to make the system more sustainable. (Variable speed appliance for energy saving included curtain pullers, trains themselves, automatic screen door, moving walkway, lift and escalator, compressors and pumps, catapults and...

Find Another Essay On Speed Control of Linear Induction Motor

The world Essay

2648 words - 11 pages current reversal, the motor would brake to a stop. In light of significant advances in the past few decades due to improved technologies in electronic controller, sensorless control, induction motor, and permanent magnet motor fields, electromechanically commutated motors are increasingly being displaced by externally commutated induction and permanent magnet motors.BrushesAll self-commutated DC motors are by definition run on DC electric power

Paper Machines

847 words - 4 pages Machines, Induction Motors and Switched Reluctance Machines. A. PM Brushless AC Machines Permanent magnet machines use permanent magnets to produce air-gap magnetic flux instead of field windings. These machines have a uniform rotating stator field that goes at the same speed as the magnetic field of the rotor. The induced waveforms in the stator are sinusoidal making vector control able to be used. [2] These machines have the big advantages of

Electronics and Communication Engeineering

952 words - 4 pages accelerator at the Tata Institute of Fundamental Research. The control system involved moving multiple couplers that efficiently coupled power into the accelerator and a tuner that set the resonant frequency. I was in a team of 3 and we were tasked with developing a microstep(1/16th) stepper motor drive which could rotate the motor for the tuner at 100rpm. For the couplers we needed a speed of 700rpm. The problem was particularly challenging due to the

Maglev Trains And The Technology Behind Them

5084 words - 20 pages . ---------------------------------------------------------------------- The principle of a Maglev (Magnetic Levitation) train is that it floats on a magnetic field and is propelled by a linear induction motor. They follow guidance tracks with magnets and have been seen to have great potential in the transport world. [IMAGE]An example of a maglev train from http://www.newscientist.com Simple Theory A maglev train will float about 10mm

Modelling and Analysis of Current Harmonic of Power Electronics Loads

1069 words - 5 pages 2: Ratings of Domestic and Industrial Loads Modeled in PSCAD Sl.No. Domestic Load Ratings 1 CFL lamp 20W 2 Fluorescent Lamp 40 W 3 Water pump 5kW,6A 4 Computer Monitor 100W 5 Battery Charger 12V, 3A 6 Adjustable speed drive 3-phase, 400 V, 10 hP 7 Lift Motor 46.3kW,62hP,9A 8 Arc Furnace 3-phase ,400V,25.4 MW Table 3: Simulation Results of Load Current and THDs for Non-linear Loads Sl. No. Equipment Name Simulated Irms(A) THDV(%) THDI(%) 1

Magnetic Levitation and Propulsion through Synchronous Linear Motors

3987 words - 16 pages case presented on this page, the vehicle coil is below the track coil.) Linear Induction Motors Linear motors are analogous to conventional (rotary) motors. A Linear Induction Motor, or LIM, can be visualized by 'unrolling' a conventional induction motor until it is flat. This presentation will explain the qualitative nature of the LIM, without going into the complicated mathematical and physical derivations. We will focus on a three-phase LIM

i wish i can go back and change - aiub - eduui

705 words - 3 pages ?. The bounce reverses the y component of the ball?s velocity but does not alter the x component. What is angle ?2? Conservation of Linear Momentum 4. State and explain the Law of Conservation of Linear Momentum. 5. [39] A 91 kg man lying on a surface of negligible friction shoves a 68 g stone away from himself, giving it a speed of 4.0 m/s. What speed does the man acquire as a result? 6. [40] A space vehicle is traveling at 4300 km/h relative to

Control Strategies for Quad-Inverter Multiphase-Multilevel AC Drives in Post-Fault Condition

2503 words - 11 pages acoustic noise drive system using open-winding AC motor and two space-vector-modulated in¬verters,” IEEE Trans. on Ind. Electron., vol. 49, no. 4, pp. 783–789, Aug. 2002. 15. J. Kim, J. Jung, K. Nam, “Dual-inverter control strategy for high-speed operation of EV induction motors,” IEEE Trans. on Ind. Elec¬tron., vol. 51, no. 2, pp. 312–320, Apr. 2004. 16. R. Kanchan, P. Tekwani, K. Gopakumar, “Three-level inverter scheme with com¬mon mode voltage

aqa somehingn2jjjj2j2jj jjjj2jjjj - uhc - aqa something

4117 words - 17 pages Revision: Motor and generator effect Cyberphysics – Electromagnetic Induction BBC Bitesize – Electromagnets and motors How to increase the potential difference induced by a generator. HT only. The size of the induced potential difference (and so induced current) can be increased by: · increasing the speed of movement · increasing the strength of the magnetic field · using more turns on the solenoid. 0.5 Describe ways of increasing the size

Influence of input current frequency on induction heating process

1259 words - 5 pages . Induction heating is one of the most popular heating processes for electrical conductive materials (usually a metal) by electromagnetic induction. Induction heating provides many advantages such as: quick heating, high production rates, ease of automation and control, safe and clean working. This process has many applications in material processing, such as heat treating, joining, welding, brazing, soldering, melting and crystal growth. An

Electrical Motor Control II Project

835 words - 4 pages project was put together by me, Olen and Melvin. Constructing a motor control panel consists of many factors, such as; meeting the customer’s specifications, desired operations, state and local regulations. Every electric motor has to have some sort of way to control it. The motors will have various ways to be started, stopped, reversed, and even ways to control the speed of the motors. These features can be complex depending on the task that the

Similar Essays

Summary Of Clock Speed: Winning Industry Control In The Age Of Temporary Advantage By Charles H. Fine

1536 words - 6 pages Summary of Clock Speed: Winning Industry Control in the Age of Temporary Advantage by Charles H. Fine Introduction In order to conduct a scientific study, you set a baseline then introduce changes in order to understand the impact of the change. Unfortunately, the rate of change, or clock speed, in many studies (human evolution as an example) is too slow for one person to have time to introduce multiple changes and measure the results

Building An Induction Motor Essay

2561 words - 11 pages . Speed Control 6 VI. Applications of three-phase induction motor 7 VII. Conculosion 8 References 9 Introduction Searching for the best is a non-stoppable process, where the best is defined according to the desired application, but there are some common concerns to be considered as the best, such as, the good performance with suitable cost for example. Three phases induction motor is widely applied in different machines on the

Electrical Motors Essay, Including: Crane Motors, Lift Motors, Double Cage Induction Motors, Etc

1261 words - 5 pages switched to provide current limiting on starting and low-speed operation.In cases where fine speed control is essential, Ward-Leonard or thyristor controlled d.c. motor drives are usually the first choice. Wound-rotor a.c. induction motors are also applied successfully in some instances, usually below 200 kW, but they tend to control difficulties at low creep speeds, which is limited by their acceptance and dissipation of the slip energy.Other important

Fewgewf Essay

1119 words - 4 pages the current produced by the generator.INDUCTION GENERATORSAn induction generator or asynchronous generator is a type of AC electrical generatorthat uses the principles of induction motors to produce power. Induction generators operate by mechanically turning their rotor faster than the synchronous speed. A regular AC asynchronous motor usually can be used as a generator, without any internal modifications. Induction generators are useful in