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http://conferences.theiet.org/ets/
Welcome to ETS 2008 The last 30 years has seen a significant development in railway traction, with the debate on energy and emissions in transport now
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high on the political agenda. There are key challenges ahead for railway traction engineers, providing many exciting opportunities. This professional development course is designed to provide delegates with a clear, concise grounding in the fundamentals of railway electric traction technology , whilst looking at current and future practice in traction design and systems interface issues, from both a technical and managerial view. Read more about this event. Register for this course IET Discover Try out our new social bookmarking site and find useful railway-related and other engineering and technology resources. Search peer-reviewed articles, reports and resources that other engineers are finding useful. © 2008 The Institution of Engineering and Technology. The Institution of Engineering and Technology is registered as a Charity in Engla
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http://www.cecube.co.uk/software/software.htm
BESPOKE SIMULATION Software has been employed by the railways industry, and in traction engineering in particular, since mainframes with paper tape and
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card readers became commonplace in the late 1960's. At that time Universities and large organizations monopolised the scare computing resources. While companies were writing their own COBOL business programs, academics and students applied the scientific based FORTRAN language to research problems. This provided the opportunity to replace restrictive analogue simulations with digital computer simulations of greater complexity. Circuit analysis and behavioural modelling on a large scale was possible - DC motors, chopper circuits, thyristors. Simulation first supported theoretical analysis, and then extended it beyond what was analytically feasible. Coding was largely a process of trial and error, often with poor or no structure. However, undoubted excitement and motivation was born on the vision of ever increasing computing capacity, giv
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http://sciencelinks.jp/j-east/article/200318/000020031803A0557606.php
Abstract; Hitachi has been developing the converter/inverter equipment, auxiliary power unit, airless line breaker, and electronic master controller by
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applying the vector control and high voltage resistance IGBT (Insulated Gate Bipolar Transistor) for the rapid improvement in capability, maintainability and efficiency. Recently, in the power system of diesel railway cars, the needs to cut-back on maintenance, to increase the efficiency, and to improve the environment are desired. And in the system of electric railwat cars, the compactness and lightness in weight are requested. Therefore, Hitachi has developed the following systems jointly with East Japan Railway Co.,Ltd : (1)hybrid power system which applied the technology of electric system for electric railway cars to the power system of diesel railcar, and 2) small cooling system based on the water circulation system. In addition, the technology which use the speed sensorless control in combination with a full electric brake contro
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http://www.railway-technology.com/contractors/electromech/alstom/
ALSTOM is the leading supplier of products, services, and systems to both urban and main line rail transport providers around the world. The company offers
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its customers full ranges of rolling stock and equipment, and among the extensive range of products and services available, are our ONIX (traction systems), and AGATE (electronics) product ranges. ALSTOM in transport has over 25,000 employees in over 60 countries worldwide, and annual sales which exceed 3.5 billion Euros. ONIX - THE INVISIBLE TRACTION SYSTEM ALSTOM was the first company to introduce IGBT traction systems to the rail industry. ONIX uses a combination of simplified design and advanced technology, allowing a 50% reduction in volume, a 30% reduction in weight, and a 33% improvement in life cycle costs. In addition, reliability is improved by 50% over the previous generation of traction systems. ONIX s compact, lightweight structure also allows for significant reductions in maintenance costs and energy consumption. The t
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http://pubsindex.trb.org/document/view/default.asp?lbid=700195
Traction power computer simulation software has changed in the last 20 years. The tool has evolved from simpler, DOS-based, energy management software
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to detailed, Windows-based, user friendly, analytical software that can accurately model train performance, predict train voltages, and produce a train voltage profile for an entire rail system. Traction power computer simulation software is now used as a comprehensive design and analysis tool in the development and upgrade of the traction electrification system (TES) for modern rail systems. The software allows the designer to analyze the existing or proposed traction power system under various operating conditions including contingency outage conditions. The designer can also optimize the size and location of the traction power substations as well as the number and size of important components of the overhead contact system (OCS) such as wire, feeder cable, and parallel conductors. As part of the Interstate MAX Light Rail Project in Po
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http://www.britannica.com/EBchecked/topic/345886/locomotive/64098/Types-of-traction-systems#tab=active~checked,items~checked&title=locomotive :: Types of traction systems -- Britannica Online Encyclopedia
We welcome your comments. Any revisions or updates suggested for this article will be reviewed by our editorial staff. Contact us here . Regular users
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of Britannica may notice that this comments feature is less robust than in the past. This is only temporary, while we make the transition to a dramatically new and richer site. The functionality of the system will be restored soon.
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http://goliath.ecnext.com/coms2/summary_0199-6877165_ITM
A system engineering approach to rail engine design.(Company Focus)(MTU Series 4000) Publication Date: 01-MAY-07 Publication Title: Format: Online Company:
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MTU AG~Product information MTU AG~Services Read this article now Try Goliath Business News - FREE! You can view this article PLUS... Over 5 million business articles Hundreds of the most trusted magazines, newswires, and journals ( see list ) Premium business information that is timely and relevant Unlimited Access Now for a Limited Time, try Goliath Business News Free for 7 Days! THE DEVELOPMENT, PRODUCTION and maintenance of diesel traction systems for railway trains are among MTU's core capabilities--and have been for nearly 100 years. As long ago as 1924, the company was developing and manufacturing production engines for scheduled service trains. In 1933, its diesel engines provided the motive power for the legendary Fliegende Hamburger, the first high-speed railcar. And from the early Fifties through to the Seventies, MTU supp
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http://www.railway-technical.com/drives.shtml
The DC motor is similar to look at externally but there are differences in construction, particularly because the DC motor has a commutator and br /ushes
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which the AC motor does not. Nose Suspended Motor The following diagram shows the layout of the traditional DC motor mounted in a bogie as a "nose suspended motor". In electric trains or locomotives, the DC motor was traditionally mounted in the bogie frame supported partially by the axle which it drove and partially by the bogie frame. The motor case was provided with a "nose" which rested on a br /acket fixed to the transom of the bogie. It was called a "nose suspended motor" (see diagram above) and is still common around the world. Its main disadvantage is that part of the weight rests on the axle and is therefore unsprung. This leads to greater wear on bogie and track. Nowadays, designers try to ensure all the motor weight is sprung by ensuring it is carried entirely by the bogie frame - a frame mounted motor. Quill Drive This is
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http://mechanical-engineering.suite101.com/article.cfm/an_introduction_to_railway_engineeringthe_engine
This branch of engineering developed through the efforts of engineers and railroad companies to make railway systems safer, more reliable, more powerful,
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and more cost efficient. Railway engineering has evolved into a diverse profession, requiring talents in a number of Historically, railway engineering was strictly a mechanical engineering discipline, encompassing pressure vessel design, purely mechanical vehicle components, and hand-powered switches. However, railway engineering has become more reliant on electronic systems, specifically control and communications. As an example of this interdependence, the Rail Transportation Division of the American Society of Mechanical Engineers (ASME) and the Institute of Electrical and Electronic Engineers (IEEE) hold a joint conference each year to discuss advances in railroad-related research, development, and testing. Railway Engineering Disciplines Railway engineering contains many sub-disciplines, including: Vehicles – This division includ
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http://journals.tubitak.gov.tr/elektrik/issues/elk-06-14-3/elk-14-3-9-0606-7.pdf
Turk J Elec Engin, VOL.14, NO.3 2006, c©T ¨ UB ˙ ITAK Controlling Rail Potential of DC Supplied Rail Traction Systems MehmetTuranS ¨ OYLEMEZ 1 ,S¨uleymanAC¸IKBAS¸
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2 ,AdnanKAYPMAZ 3 1 ˙ Istanbul Technical University, ˙ Istanbul-TURKEY e-mail: soylemez@elk.itu.edu.tr 2 ˙ Istanbul ULAS¸IM AS¸, ˙ Istanbul-TURKEY e-mail: acikbas@istanbul-ulasim.com.tr 3 ˙ Istanbul Technical University, ˙ Istanbul-TURKEY e-mail: kaypmaz@elk.itu.edu.tr Abstract Most modern DC electrified mass transit systems use a totally floating earth as their grounding strategy. A well-known problem related with totally floating systems is that the touch potentials can be dangerously high. In order to reduce the voltages on rails, several devices exist. Most of these devices allow a direct connection to earth when a certain voltage threshold is exceeded. In this paper, the working principles of these devices are given and the effect of certain parameters related with these devices on the minimum achievable touch potentials is
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