Electric traction on indian railways indian railway employee. Current status and apportunities 49 passenger traffic and 65. Booster transformers are used in electric railway ac catenary feeders to collect the return current from the rails and the earth to the return conductor. Numerous efforts to use traction induction drive instead of obsolete and unserviceable dc motors with 18 step power circuit breakers with power starting resistors were not reliable. This chapter presents a general description of the elements that characterize a railway electric transportation systems. However, the main obstacle for regenerative braking in 50 hz systems which is the electric separation of feeding section cannot be eliminated. Electric traction means use of the electricity for all the over machines.
Studies electric traction railway vehicles, presenting various types of. Second, the feature of the hybrid compensative schemes are discussed. Sep 29, 2009 this ppt helps to understand the concept of electric traction slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The motors used in electric traction have a very high starting torque. Electric locomotives do not have a conventional engine in them as we have seen in a diesel locomotive, but use the electricity. Traction electric drive for railway application has to. Special transformers railway transformers 5 ac traction. The permissible range of voltages allowed for the standardised voltages is as stated in standards bs en 50163 and iec 60850. It is an applicationoriented book for the design and development of traction systems accompanied by a description of the core technology. A new digital protection of the 3 kv dc electric traction.
Actm ac traction manual issued by ir on the field of electric traction is further detailed into various volumes and parts for covering the details of installations and functionaries. Optimization of target speeds of highspeed railway trains for traction energy saving and transport. The final decade of the 20 th century and the first decade of the 21 st century were marked by the enormous rise in high speed due to the huge leaps forward in electric locomotive technology. Harmonic and unbalance compensation based on direct. By electric traction is meant locomotion in which the driving or tractive force is obtained from electric motors. Electric traction and dc traction motor drives abstract.
When fuel rose to 34 cents per gallon and the oil embargos occurred, much effort was expended studying alternatives to hydrocarbon fuels. List of interurban railways in north america wikipedia. Firstly, there construction and capacity distribution are analyzed, and the compensation current of active equipment is gave. Two countries that approach this ideal are switzerland and hong kong, but both use more than one system, so unless multisystem locomotives or other rolling stock is used, a switch of traction method may still be required. It is used in electric trains, tramcars, trolley buses and diesel electric vehicles etc. A fully electrified railway has no need to switch between methods of traction thereby making operations more efficient. Aedei is a well known railwaymetro traction ohe design institute situated at the center of the capital of india.
Ppt electric traction system powerpoint presentation. Electric traction 1701 however, the steam locomotive suffers from the following disadvantages. Introduction fixed installations for electric traction ifte romanian railways have been built during 19651991. Our team have a strong track record delivering traction power solutions for light and heavy rail network according to client standards. System such a diesel electric drive, electric drive etc. Single and double voltage systems are used as in autotransformer and booster transformer applications. Railway traction systems free download as powerpoint presentation. Thyristors in railway traction how can their effects be.
Powerelectronics issues of modern electric railway systems. Railway electrification as a means of traction emerged at the end of the nineteenth century, although experiments in electric rail have been traced back to the midnineteenth century. A free powerpoint ppt presentation displayed as a flash slide show on id. Download electric traction systems seminar report with ppt. The railway receives 3phase power supply from the supply authority at a single point near the grid substation from where the railway runs its own transmission lines providing its own traction substations. Review of characteristics of different types of dc and ac motors used traction and their suitability moduleiv 10 hours rating and heating of electric drives, power loss, heating and cooling of motors, classes and duty and selection of motors, drives for. Train systems there is a general power based classification in 3. Pdf the paper states that the railway is a highly integrated system and there can be interactions between many of its components. Advent of electric traction in ir dates back to 1925 when the electric train services introduced between bombay vt and kurla harbour on 1500 volt dc. Electric traction means by means of the electric power for traction system i. At present in italy, according to the current technology, the protection of the 3 kv dc electric traction lines is provided by dc circuit breakers equipped with an internal overcurrent protection also sensitive to the derivative of the current with respect to the time. Modeling of electric railway vehicle for harmonic analysis of. Electric traction substations study of railway seminarrs. The railway receives 3phase power supply from the supply authority at a single point near the grid substation from where the railway runs its own transmission lines providing its own traction.
Industrial training electrical loco shed, ghaziabad name. This is a list of interurban railways in north america. Energy saving technologies in the railway vehicle traction field can be mainly. Features of mitsubishi electric hvigbt modules for railway traction inverters and power transmission. Even so, many notable innovations occurred simultaneously yet independently. The manual of ac traction maintenance and operation covering the maintenance and operation of 25 kv ac 50 hz single phase traction installations, electric locomotives and electrical multiple units and other connected matters including railway electrification was issued in 1972. This book is a reproduction of that original, which has been scanned and cleaned by stateoftheart publishing tools. On electrifications, technologically strong solutions were implemented until ones with. Railway traction systems alternating current electric. A long tradition in electric railway engineering electrifying history. Purpose in railways, the electric current is taken from the catenary conductor. Electrification traction and signalling compatibility. Electric traction motor market global forecast to 2025. Pdf railway technical web pages electric traction power.
The articles cover traction drives with dc and ac traction motors, electrification systems, and railway. A railway traction system which integrated with the model is simulated with this method. Advantages of ac traction systems it is possible to use regenerative braking in electric traction system. At present 28 per cent of route kilometres on indian railways are electrified.
Customary units consistent with guidelines prepared by the california department of transportation and defined by the. The railways segment is likely to dominate the market in the coming years due to the increased reliance of the railway industry on electric traction motors for enhanced speed control and high startup torque. The california highspeed rail chsr line will be an electrified line with traction power for electric vehicles being supplied and distributed using a 2x25kv autotransformer feed type power supply system and an overhead contact. Any crossover of content between the two should be avoided. Power electronics and electric drives for traction applications offers a practical approach to understanding power electronics applications in transportation systems ranging from railways to electric vehicles and ships. In an electric traction system the driving force to pull a train is generated by the traction motors. To establish this model, detail information on converter design, accurate electrical parameters and control algorithm of traction drive. Restrepo, member, ieee, ronald harley, fellow, ieee, and thomas g. If you continue browsing the site, you agree to the use of cookies on this website. This series of tutorial articles explains the electrical and control engineering background in electric railways. California high speed train project traction power 2x25kv autotransformer electrification system, r2 california highspeed rail authority page 4 1. Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered. A book for students, electrical and mechanical engineers, superintendents of motive power and others interested.
Building an electric railway traction collectors library and a great selection of related books, art and collectibles available now at. Performance characteristics of conductors for electric traction on indian railways this paper describes the trend of railway electrification, as planned in the coming years followed by the options available for copper conductors, which may replace the material being used currently, offering a long term solution for higher speeds and. The detailed traction system can be described by dividing it into three sections such as three phase supply system, traction substation and locomotive system which is described as follows. A book for students, electrical and mechanical engineers, superintendents of motive power and others by edward parris burch, first published in 1911, is a rare manuscript, the original residing in one of the great libraries of the world. Electric traction has many advantages as compared to other nonelectrical systems of traction including steam traction. Electric traction has the distinct characteristics of attracting traffic by b routes and thus very slowly traction system starts getting overloaded. Modelling of 25 kv electric railway system in emtp. Voltage ehv at each traction substation which is owned, installed, operated and maintained by the railways. As we all know, it is electric locomoti ves that are at the forefr ont of railway traction, while the diesel locomotive is kept for some very specific uses. Analysis of the electric locomotives neutralsection passing. Imho, they are quite different, and both merit separate articles. Introduction establishment electric loco shed was set in 1976 by railway electrification organisation 8910 sq. Development of electric railways led to great improvements in design, not only in locomotives and coaches operated by electricity, but also in the generation and methods of distributing the electric current produced. Optimising power management strategies for railway traction systems by shaofeng lu a thesis submitted to the university of birmingham for the degree of doctor of philosophy school of electronic, electrical and computer engineering college of engineering and physical sciences the university of birmingham, uk october 2011.
In addition, we will show that the suggested traction control system is sufficient in practical use through an analysis of operation status under the condition of actual railway vehicle traction, for instance, parameter changing in the traction motor as a control object or sudden changes in. An electric locomotive is a railway vehicle that can move along rails and push or pull a train attached to it using electric power drawn from an external source, usually from overhead cables or a third rail. Pdf electrification traction and signalling compatibility. All were opened primarily as passenger carriers, although many survived as freight railways after passenger service ceased. However, in present studies, few of them take the influence of harmonic resonance into account, except the. Technologies regenerative braking in 50 hz, 25 kv systems.
Study hybrid compensation cophase traction power supply. Studies showed that an estimated 34% savings in energy could be achieved by using electric. Traction power 2x25kv autotransformer electrification system, r2. There are many other voltage systems used for railway electrification systems around the world, and the list of current systems for electric rail traction covers both standard voltage and nonstandard voltage systems. A new modeling method for electric railway vehicle is proposed. Traction electric drive for railway application has to provide the adjustment of both rotor speed and. Volumei deals with organisational setup and read more. Electric traction is an environmental friendly, pollutionfree and energy efficient alternative to fossil fuels. Railway electric traction is about the traction units that operate on a railway electrification system. Railway technology today 3 edited by kanji wako railway electric power feeding systems.
The seminar report and electric traction system ppt briefly discusses the requirements, types, supply system, traction motors, railway electric locomotives, braking system, advantages and disadvantages and recent trends. Active power calculated at 25 kv level in electric traction substation. Electrical railway transportation systems ieee press. Ppt electric traction system powerpoint presentation free. A traction substation, traction current converter plant or traction power substation tpss is an electrical substation that converts electric power from the form provided by the electrical power industry for public utility service to an appropriate voltage, current type and frequency to supply railways, trams streetcars or trolleybuses with traction current. Performance characteristics of conductors for electric. Elsewhere, the term was not used or did not have the same meaning. However, electric railways did not appear until 1890 at. Railway traction power transmission hvigbt modules are used for railway traction inverters and power transmission. A railway electrification system is the infrastructure that allow electric traction to operate. Introduction of traction system in hindi, electrical. The phase i of california highspeed train project chstp to be implemented between san francisco and anaheim will be a 520 routemiles long stateoftheart rail system providing intercity travel with modern highspeed trains running at speeds up to 220 miles per hour. Electric traction will continue to play a dominant role in the railway since it is an. Habetler, fellow, ieee abstractthis work presents a general.
The delhi metro uses 25kv ac overhead traction with a catenary system on the groundlevel and elevated routes, and uses a rather unusual rigid catenary or overhead power rail in the underground tunnel sections line 2. Electric traction rail transport alternating current. Countries having great natural resources in the form of water power were quick to appreciate the advantages of electric traction. Analyzes multiple railway systems from a theoretical and realizable vantage point, with particular regard to functionality, electromagnetic compatibility, and interferences with other electrical systems.
Power quality in highspeed railway systems zhengyou he, zheng zheng and haitao hu college of electrical engineering, southwest jiaotong university, chengdu, china abstract the proliferation of the new highspeed train has resulted in signi. Powerelectronics issues of modern electric railway systems a. Direct power control for electric railway systems alexander bueno, jose m. Hence, it is possible to achieve higher acceleration of 1. Our well experienced faculty helps you to excel in the field of railwaymetro traction engineering, aedei is providing traction practical training on railwaymetro, with 100% placement in traction engineering. What is an electric locomotive systems and their types in india. Control system of permanent magnet synchronous motor for.
Special transformers railway transformers 5 ac traction feeder transformers application ac traction feeder transformers are used between normal threephase ac networks and singlephase catenary systems. Railway electrical engineering association of japan, vol. Electric traction the system which use electrical power for traction system i. Introduction classification electric traction railway traction third rail system overhead system traction is defined as. Railway technical web pages electric traction power supplies contents. The electric traction system can be broadly divided into two groups. Pdf applications of power electronics in railway systems. Friends is video me ham electric traction ke bare me discuss kar rhe hai. Electric traction motors are an essential part of railway trains. Railway electrification interest peaks during times of uncertainty in the energy industry. Depending on whether a country had rich coal deposits or huge hydropower resources, the reasons to electrify railways would have differed. Power electronics and electric drives for traction.
Another general assertion is 14 which explain chinas railway potential for new technologies. Optimising power management strategies for railway. Why 25kv is used in railway traction system electrical4u. Railway and electric traction history is closely linked with the electrotechnic development rhythms, in particular transformers, motors and semiconductors. Railway technology today 3 edited by kanji wako railway. Or electric traction means a locomotion in which the driving force is obtained from electric motors. Special transformers railway transformers 5 ac traction feeder transformers application. It is a pollution free system and with use of modern high. Fashion, politic or strategic choices also influenced notably the evolution of electric traction.
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