Pdf this paper presents technology aspects and choices relative to. We feel pleased to present our formal report on maglev trains. As a new approach to magnetic levitation by permanent magnet envisioned in 1990s, the concept of inductrack has been applied to designs of various maglev systems, including rocket launchers. Constructing an inductrack maglev j0820 objectivesgoals in our project constructing an inductrack maglev, our engineering goal was to construct a magnetically levitated train complete with a propulsion track. The inductrack ii variation uses two halbach arrays, one above and one below the track, to double the magnetic field without substantially increasing the weight or area of the arrays, while also reducing drag at low speeds. Pdf the inductrack approach to magnetic levitation semantic. Us8985030b2 inductrack iii configurationa maglev system. An introduction to the world of maglev is needed to understand the innovation of inductrack. Inductrack iii addresses a problem associated with the cantilevered track of the inductrack ii configuration.
The inductrack method was created, tested, and proven to work on a small scale level with a 20 meter track. Prototype model of maglev train using linear reluctance motor free download as powerpoint presentation. Us8578860b2 inductrack iii configurationa maglev system. The inductrack concept is a passive magnetic levitation system for moving objects that. Design of a microcontroller based economic maglev guideway system shahidul islam khan1, md. However, despite some promising developments, unresolved concerns with the operation and safety of maglev trains has prevented the transition from demonstration model to commercial development.
A free powerpoint ppt presentation displayed as a flash slide show on id. A new way to travel 4 maglev vehicle traveling at 300 mph only consumes 0. The track can be in one of two configurations, a ladder track and a laminated track. Laminated track design for inductrack maglev systems.
The use of a cantilevered track could present mechanical design problems in attempting to achieve a strong enough track system such that it would be capable of supporting very heavy loads. The inductrack magnetic levitation system, developed at the lawrence livermore national laboratory, is being studied for its possible use for launching rockets. Maglev derived from magnetic levitation is a transport method that uses magnetic levitation to move vehicles without making contact with the ground. Llnl developed a maglev method in the late 1990s called the inductrack method. A passive inducedcurrent system employing permanent magnets on the moving vehicle, the inductrack maximizes levitation forces by a combination of two elements. Inductrack, a maglev system originally conceived by livermore physicist richard post, is designed to address these issues. The inductrack approach to magnetic levitation abstract. Inductrack magnet configuration free patents online. Apparently nasa is also considering it as a means to give their rockets a jump start.
Post, physicist at lawrence livermore national laboratory, was the creator and team leader of the first inductrack developed under the u. The major advantage of maglev trains is speed up to 580 kmh 4, which increases the range in which rail travel is comparable to air travel. Urban and intercity maglev systems could represent a practical and energyefficient solution to pressing transit needs. Modelling planar electromagnetic levitation system based. Inductrack is a completely passive, failsafe magnetic levitation system, using only unpowered loops of. The inductrack maglev system free download magnetic attractionems electromagnetic suspension systems, using servocontrolled electromagnets on the train car, attracted upward to a ironplate rail. Inductrack passive magnetic levitation the physics of magnetic levitation maglev. Inductrack meaning inductrack definition inductrack explanation. Equations 28a and 28b are numerically evaluated using a derivativefree.
So far, the most promising commercial application for the halbach array is the inductrack maglev train. Laminated track design for inductrack maglev systems the. This high speed form of transport is in use around the world on. The present invention, an evolutionary development of the inductrack maglev system, is aimed at providing a solution to this problem. The inductrack maglev train by collin zajicek on prezi. Application information about transrapid magnetic lift trains. Inductrack iii configurationa maglev system for high. These concepts are studied and analysed for better understanding of electromagnetic systems. Trends in increased mobility of large masses with changing lifestyle. The inductrack possibilities and drawbacks use the inductrack levitation system to propel spacecrafts into space possibility to accelerate spacecraft 950 kmhr and save 30 to 40 percent on rocket fuel to make ride comfortable to passengers, other aerodynamic. Acuson s pdf siemens has unveiled a new ultrasound in its popular acuson line, the s the system is designed for a wide variety of applications and. In the inductrack maglev system halbach arrays are used, located below the train car.
The inductrack concept grew out of work at the laboratory on passive magnetic bearings 2,3 the stability of which was derived from. The previous work of paul friend in 2004 includes the development of a laboratory scale model train containing permanent magnets, hung above a rotating wheel. Our maglev rail will feature a modified version of the inductrack maglev design as well as electromagnetic suspension design ideas. Conventional maglev systems, that is, ones employing superconducting coils, or ones requiring servocontrolled electromagnets for levitation, appear to fall short on one or more of these counts. The nasa inductrack model rocket launcher at the lawrence. The inductrack approach to magnetic levitation pdf. The ladder track is made of unpowered litz wire cables, and the. Being mechanically contact free, this transfer method is suitable.
The magnetic levitation train maglev project uses the concepts of electromagnetism and electrical machinery to levitate and propel a train along a track. Maglev is the system of transportation that uses magnetic levitation to suspend,guide and propel the vehicles using magnets. First described by robert goddard, american rocket scientist, 1909 scientific american. Magnetic repulsion eds electrodynamic suspension systems, using cryogenically cooled superconducting. Us20030112105a1 laminated track design for inductrack. The scmaglev superconducting maglev, formerly called the mlu is a magnetic levitation maglev railway system developed by central japan railway company jr central and the railway technical research institute. Jrmaglev new freestanding rc sidewalls and sidewalls with powder.
The inductrack approach to magnetic levitation pdf ieee transactions on applied superconductivity. With maglev, a vehicle travels along a guideway using magnets to create both lift and propulsion. Department of energy that was demonstrated in 1998. The first laboratory scale train using the inductrack method was demonstrated in 1998. Chassis must be light as possible, must achieve levitation of at least 2 millimeters, transition speed must.
Prototype model of maglev train using linear reluctance. The inductrack system isfail safe in the event of a power failure. Concepts developed during research on passive magnetic bearing systems at the lawrence livermore national laboratory gave rise to a new approach to magnetic levitation, the inductrack. Recent innovations in maglev technology, such as the inductrack system, promise failproof operation. Pdf the inductrack approach to magnetic levitation. The simplicity of the inductrack should make it substantially less expensive than the present eds or ems maglev trains. Inductrack iii configurations are suited for use in transporting heavy freight loads. Commercial maglev rails are few and far between as there are only 2 rails in existence today that transport people. As a maglev system, inductrack allows for a short turning radius and is designed for quiet operation. Inductrack is a passive, failsafe electrodynamic magnetic levitation system, using only. In the first part of this project, different methods for electromagnetic propulsion such as maglev, electrodynamic, inductrack project, rail guns, propulsion using halbach arrays, electromagnetic thrusters are studied. Current projects nclusion introduction maglev, or magnetic levitation, is a system of transportation that suspends, guides and propels vehicles, predominantly trains, using magnetic levitation. Maglev technology primarily focuses on improving the performance, speed, fuel economy, driving range and operating cost of the transit system.
The key difference between japanese and german maglev train technology is that the japanese trains use supercooled, superconducting electromagnets. The inductrack maglev system global climate and energy project. Scmaglev wikimili, the free encyclopedia wikimili, the free encyclopedia. A magnet configuration comprising a pair of halbach arrays magnetically and structurally connected together are positioned with respect to each other so that a first component of their fields substantially cancels at a first plane between them, and a second component of their fields substantially adds at this first plane. Closed loop magnetic levitation control of a rotary. The report focuses on the technology empowering the highly successful transportation method of maglev trains, and their advantages. Inductrack iii for superefficient leviation and movement.
Maglev is a method where by an object is suspended by no other support than magnetic fields. Patent pending us 20030112105 a1 june 19, 2003 coffey. Inductrack iii for superefficient leviation and movement of shipping containers. A fast and reliable software network load balancer daniel e.
The next innovation topic is in the field of transportation. Inductrack was invented by lawrence livermore national laboratory physicist richard f. A candidate system is the inductrack, employing permanent magnets on the. Japanese engineers have developed a competing version of maglev trains that use an electrodynamic suspension eds system, which is based on the repelling force of magnets.
Propulsion and stabilization for magnetically levitated vehicles. Inductrack demonstration model technical report osti. A track is located between the pair of halbach arrays and. Closed loop magnetic levitation control of a rotary inductrack system students. Concepts developed during research on passive magnetic bearing systems at the lawrence livermore national laboratory gave rise to a new approach to. Inductrack project gutenberg selfpublishing ebooks. The scmaglev superconducting maglev, formerly called the mlu is a magnetic levitation railway system developed by central japan railway company jr central and the railway technical research institute on 21 april 2015, a manned sevencar l0 series scmaglev train reached a speed of 603 kmh 375 mph, less than a week after the same train clocked 590 kmh 370. Lawrence livermore national laboratory, livermore, ca. Us2064929a1 inductrack iii configuration a maglev system. Inductrack is a completely passive magnetic levitation train system, using only unpowered loops of wire in the track and permanent magnets in halbach arrays on the train to achieve levitation. Design and analysis of electromagnetic propulsion system. To maximize the energy efficiency of maglev systems both the levitation means and the propulsion system must be optimized. This results in the following differential equation for the ball dynamics.
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