This document summarizes a seminar presentation on eddy current brakes given by a student at Jyothi Engineering College. It begins with the vision and mission of the mechanical engineering department. It then explains the working principle of eddy current brakes, which use electromagnetic induction to create resistance and slow objects down. The document discusses the two main types - circular brakes that use a disc between magnet poles, and linear brakes that use a rail. It covers advantages like no contact or wear, applications in trains and rollercoasters, and future prospects like replacing ordinary brakes. In conclusion, eddy current brakes provide a way to control high-speed vehicles without parts wear.
Magnetic levitation, Present and Future Usage.
Product Marketing, Bearing with infinite rpm, weightlessness, flying cars, low cost space launch and even the flying city.
Magnetic Levitation is a method by which we can levitated an object with no support, other than magnetic field.
since it is a old theory but there still research is going on in this topic.now it is used in maglev train,maglev bearing and product display purpose.
Maglev (derived from magnetic levitation) is a transport method that uses magnetic levitation to move vehicles without touching the ground. With maglev, a vehicle travels along a guideway using magnets to create both lift and propulsion, thereby reducing friction and allowing higher speeds.Maglev trains move more smoothly and more quietly than
wheeled mass transit systems. They are relatively unaffected by
weather. The power needed for levitation is typically not a large percentage of its overall energy consumption;most goes to overcome air resistance (drag), as with other highspeed transport. Maglev trains hold the speed record for rail transportation
Maglev trains are the fastest trains in the world! Maglev is short for magnetic levitation which basic principles involve the use of magnetism to levitate an object.
Magnetic levitation, Present and Future Usage.
Product Marketing, Bearing with infinite rpm, weightlessness, flying cars, low cost space launch and even the flying city.
Magnetic Levitation is a method by which we can levitated an object with no support, other than magnetic field.
since it is a old theory but there still research is going on in this topic.now it is used in maglev train,maglev bearing and product display purpose.
Maglev (derived from magnetic levitation) is a transport method that uses magnetic levitation to move vehicles without touching the ground. With maglev, a vehicle travels along a guideway using magnets to create both lift and propulsion, thereby reducing friction and allowing higher speeds.Maglev trains move more smoothly and more quietly than
wheeled mass transit systems. They are relatively unaffected by
weather. The power needed for levitation is typically not a large percentage of its overall energy consumption;most goes to overcome air resistance (drag), as with other highspeed transport. Maglev trains hold the speed record for rail transportation
Maglev trains are the fastest trains in the world! Maglev is short for magnetic levitation which basic principles involve the use of magnetism to levitate an object.
Contents- Introduction of eddy current Introduction of eddy current brake Circular eddy current brake Linear eddy current brake How eddy current brake works? Advantages Disadvantages Applications Future Aspects conclusion
Afraid to change your boring, North American 240z tail lights to the sexier European ones with the amber turn signal? Fear not! This presentation shows you how to modify your wiring so the sexy European version functions properly. It also contains other tricks for improving the power output and visibility of your new brake lights! Cool stuff for any Z enthusiast.
Contents- Introduction of eddy current Introduction of eddy current brake Circular eddy current brake Linear eddy current brake How eddy current brake works? Advantages Disadvantages Applications Future Aspects conclusion
Afraid to change your boring, North American 240z tail lights to the sexier European ones with the amber turn signal? Fear not! This presentation shows you how to modify your wiring so the sexy European version functions properly. It also contains other tricks for improving the power output and visibility of your new brake lights! Cool stuff for any Z enthusiast.
An eddy current brake, like a conventional friction brake, is a device used to slow or stop a moving object by dissipating its kinetic energy as heat. However, unlike electro-mechanical brakes, in which the drag force used to stop the moving object is provided by friction between two surfaces pressed together, in an eddy current brake the drag force is an electromagnetic force between a magnet and a nearby conductive object in relative motion, due to eddy currents induced in the conductor through electromagnetic induction. A conductive surface moving past a stationary magnet will have circular electric currents called eddy currents induced in it by the magnetic field, due to Faraday's law of induction. By Lenz's law, the circulating currents will create their own magnetic field which opposes the field of the magnet. Thus the moving conductor will experience a drag force from the magnet that opposes its motion, proportional to its velocity. The electrical energy of the eddy currents is dissipated as heat due to the electrical resistance of the conductor. In an electromagnetic brake the magnetic field may be created by a permanent magnet, or anelectromagnet so the braking force can be turned on and off or varied by varying the electric current in the electromagnet's windings. Another advantage is that since the brake does not work by friction, there are no brake shoe surfaces to wear out, necessitating replacement, as with friction brakes. A disadvantage is that since the braking force is proportional to velocity the brake has no holding force when the moving object is stationary, as is provided by static friction in a friction brake, so in vehicles it must be supplemented by a friction brake. Eddy current brakes are used to slow high-speed trains and roller coasters, to stop powered tools quickly when power is turned off, and in electric meters used by electric utilities.
Eddy currents are loops of electrical current induced within conductors by a changing magnetic field in the conductor, due to Faraday's law of induction. Eddy currents flow in closed loops within conductors, in planes perpendicular to the magnetic field.
The magnitude of the current in a given loop is proportional to the strength of the magnetic field, the area of the loop, and the rate of change of flux, and inversely proportional to the resistivity of the material.
Presentation to the ASME Rail Transportation Division Fall Technical Conference in Roanoke, VA on October 12, 2010. Paper available from ASME www.asme.org #RTDF2010-42009.
Comparative performance evaluation of different mechanical implement for weed...Gajanan Bele
Comparative performance evaluation of different mechanical implement for weed control in sugarcane crop
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caet vnmkv parbhani maharashtra
Tax Life Cycle of a Medical Professional - Part 1Brett Beaver
A presentation for medical professionals to discover how to make the most of their finances throughout their career.
For more information, visit www.goodingpartners.com.au
This Project was directed at creating an integrated electric motor and eddy current brake. This combination is designed to be used in the automotive industry as an electric all-wheel drive system that can be managed by available traction and stability control technology. This project addresses the physical concept of using an induced electromagnetic field to slow the proposed vehicle speed. The main goal is lessening the lifetime maintenance of a vehicle and eliminating several high maintenance items. This system is designed as a “frictionless” system and although it is not completely frictionless it eliminates the need for standard hydraulic brake pads and rotors which wear and fail due to friction material loss. This saves the consumer's time and money in maintenance.
ELECTRIC POWER GENERATION FROM TRAFFIC
This is a mini project slide done by EEE students of calicut university institute of engineering and technology 2013-2017
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
1. JYOTHI ENGINEERING COLLEGE,CHERUTHURUTHY
Department of Mechanical Engineering
February 2016
Seminar on “EDDY CURRENT BRAKES”
Guided by, Submitted by,
Mr. Nikhil N.S. Anson T. Anto
Asst. Prof. JYAMEME021
Dept. of Mechanical S8, ME-A
JECC
1
2. DEPARTMENT OF MECHANICAL
ENGINEERING
VISION
• To provide quality education of international standards in Mechanical Engineering
and promote professionalism with ethical values, to work in a team and to face
global challenges.
MISSION
• To provide an education that builds a solid foundation in Mechanical Engineering.
• To prepare graduates for employment, higher education and enable a lifelong
growth in their profession.
• To develop good communication, leadership and entrepreneurship skills to enable
good knowledge transfer .
• To inculcate world class research program in Mechanical Engineering.
2
3. CONTENTS
1. Introduction.
2. Working principle.
3. Types of eddy current brake.
4. Circular eddy current brake.
5. Linear eddy current brake.
6. Advantages and Disadvantages.
7. Application and future aspects.
8. Conclusion
9. Reference
3
4. INTRODUCTION
• An eddy current brake, like a conventional friction brake, is responsible for
slowing an object, such as a train or a roller coaster etc.
• Unlike the friction brakes, which apply pressure on two separate objects,
eddy current brakes slow an object by creating eddy currents through
electromagnetic induction which create resistance.
• It slows an object by creating eddy currents .
• Braking action is made by varying the strength of the magnetic field.
• Braking force depends on speed of object.
4
5. WORKING PRINCIPLE
Eddy current brake is based on two basic laws of electro magnetics , which are
1. Faraday’s law of electro magnetic induction :-when a conductor cuts magnetic
flux an emf is induced in the conductor, induced emf is proportional to the strength of
magnetic field & speed of conductor.
2.Lenz law :- “An induced electro motive force (emf) always gives rise to a current
whose magnetic field opposes the original change in magnet field.
• The direction of the current is in such a way as to oppose the cause, i.e. movement
of the disc.
• Thus the moving conductor will experience a drag force from the magnet that
opposes its motion, proportional to its velocity. The electrical energy of the eddy
currents is dissipated as heat due to the electrical resistance of the conductor.
5
8. TYPES OF EDDY CURRENT BRAKES
• There are two basic types:
1) Circular eddy current brakes
2) Linear eddy current brakes
8
9. CIRCULAR EDDY CURRENT BRAKES
• In a circular, disk or rotary eddy current brake, the conductor is a flat disk rotor that
turns between the poles of the magnet.
• Consisting of a conductive non-ferromagnetic metal disc (rotor) attached to the axle
of the vehicle's wheel, with an electromagnet located with its poles on each side of
the disk, so the magnetic field passes through the disk. .
• The movement of the disc through the magnetic field of the electromagnets creates
eddy currents in the discs.
• The electromagnet allows the braking force to be varied. When no current is passed
through the electromagnet's winding, there is no braking force. When the driver
steps on the brake pedal, current is passed through the electromagnet windings,
creating a magnetic field, The larger the current in the winding, the larger the eddy
currents and the stronger the braking force.
9
10. CIRCULAR EDDY CURRENT BRAKES
• The kinetic energy of the vehicle's motion is dissipated in Joule heating by
the eddy currents passing through the disk's resistance, so like conventional
friction disk brakes, the disk becomes hot.
10
13. LINEAR EDDY CURRENT BRAKES
• In a linear eddy current brake, the conductive piece is a straight rail or track
that the magnet moves along.
• The linear eddy current brake consists of a magnetic yoke with electrical
coils positioned along the rail, which are being magnetized alternating as
south and north magnetic poles. This magnet does not touch the rail, as with
the magnetic brake, but is held at a constant small distance from the rail
(approximately 7 mm).
• When the magnet is moved along the rail, it generates a non-stationary
magnetic field in the head of the rail, which then generates electrical tension
(Faraday's induction law), and causes eddy currents.
14. LINEAR EDDY CURRENT BRAKES
• These disturb the magnetic field in such a way that the magnetic force is
diverted to the opposite of the direction of the movement thus creating a
horizontal force component, which works against the movement of the
magnet.
• The braking energy of the vehicle is converted in eddy current losses which
lead to a warming of the rail.
• Braking force is low at low speeds and high at high speeds.
14
16. 16
Eddy current brakes on the Intamin roller coaster Goliath at Walibi Holland(Netherlands)
17. ADVANTAGES
1) It uses electromagnetic force and not friction.
2) No contact, therefore no wear or tear.
3) High brake forces at high speeds.
4) Long Life
5) Low maintenance
6) Operates at any rotational speed
17
18. DISADVANTAGES
• Braking force diminishes as speed diminishes.
• no ability to hold the load in position at standstill.
• ECB is used with ordinary mechanical brakes.
• very tough design.
18
19. APPLICATIONS
• In high speed trains.
• In roller coaster for braking and smooth functioning.
• It is also used in vehicles but still not widely used.
• For high speed passenger and goods vehicle
• Eddy current brakes are best substitutes for ordinary brakes, which are
being used nowadays in road vehicles even in trains, because of their jerk-
free operation.
19
20. FUTURE ASPECT
• In future ordinary brakes will be replaced by the ECB completely.
• By the use of ECB in future we can control high speed train completely.
• By some new invention of extra mechanism we can use ECB for slow
speed vehicles also.
20
21. CONCLUSION
• ECB is a good invention for the speed control of high speed vehicles
• It makes use of opposing tendency of eddy current.
• We can control the speed of high speed vehicles without wear and tear in
parts of it.
• Drawback of ordinary mechanical braking system can be overcome by
application of ECB.
21
22. REFERENCES
[1] Virendra Kumar Maurya, et.al, “Eddy current braking embedded system”,
International Journal of Applied Engineering and Technology ISSN: 2277-
212X , Vol.1,January 2011.
[2] Shivanshu Shrivastava, “A Parametric Analysis of Magnetic Braking –The
Eddy Current Brakes – For High Speed and Power Automobiles and
Locomotives Using Simulink” International Journal of Advanced Research
in Electrical, Electronics and Instrumentation Engineering, Vol. 3, Issue 8,
August 2014.
22