They are also used in electric vehicles, such as electric. In november 1998, the chittaranjan locomotive works clw started producing these with. 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. The electric traction system is the most efficient of all other traction system such as steam and internal combustion ic engine type systems. Pdf basic modeling for electric traction systems under uncertainty. 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. 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. Applications of power electronics in railway systems. The mechanics involves conversion of overhead electrical powerdieselsteam power in rail horse power to haul a train encountering acceleration, train, grade, curve resistance and similarly braking. Electric traction is widely used around the world, particularly for routes with dense traffic, like urban and suburban railways or long distance, high speed lines that need electric traction to obtain the speeds required for intercity travel. Traction converters with integrated auxiliary converters traction motors and generators for various electric and dieselelectric rail vehicles abb offers a broad portfolio of solutions and services for rolling stock including traction transformers, converters, motors and many other components. Electric traction has many advantages as compared to other nonelectrical systems of traction including steam traction. Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered rails. Electric railways use either electric locomotives hauling passengers or freight in separate cars, electric multiple units passenger cars with their own motors or both.
Act of drawing or being drawn is known as traction. Its a very important topic for various recruitment exams like state electricity board exams etc. Studies showed that an estimated 34% savings in energy could be achieved by using electric. May 06, 20 traction mechanics is the study of train motion. In an electric traction system the driving force to pull a train is generated by the traction motors. We have included a wide range of subjects systems, design, operation, planning, finance, engineering. In our case, the most appropriate in terms of ease of implementation and losses is the. The 106km valtellina line was opened on 4 september 1902. The capital cost for provision of fixed installation required for electric traction is found adequately remunerative for.
Electric traction current, car, railway, motor, motors. Electric traction motors are an essential part of railway trains. The railway traction systems under study, taking account of all the processes of. Gtu electrical power utilization and traction semester exam previous year question paper download pdf presentation on economies of traction diesel vs electric ebook download ppt diesel vs electric traction ppt. Electric traction on indian railways indian railway employee. A traction motor is used to make rotation torque on a machine.
Introduction establishment electric loco shed was set in 1976 by railway electrification organisation 8910 sq. 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. Introduction fixed installations for electric traction ifte romanian railways have been built during 19651991. Utilization of electrical enrgy and electric traction. The electric traction system can be broadly divided into two groups. Ppt electric traction system powerpoint presentation. Countries having great natural resources in the form of water power were quick to appreciate the advantages of electric traction. Power electronics and electric drives for traction. However, the lowvoltage dc feed made it difficult to develop electric locomotives with sufficiently high output to replace steam locomotives for hauling heavy passenger.
Distribution of the traction return current in at electric. If you continue browsing the site, you agree to the use of cookies on this website. Railway and electric traction history is closely linked with the electrotechnic development rhythms, in particular transformers, motors and semiconductors. Electric traction railways free download as powerpoint presentation. Railway transportation systems for a comfortable future. Technical authority electrical systems integration. Federal transit administration december 9, 2016 8 new insulators that can be removed for cleaning and then reinstalled. The problems of electric traction on railways deserve special study at the present time.
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. Ppt electric traction system powerpoint presentation free. On electrifications, technologically strong solutions were implemented until ones with. The wag9 is a type of electric locomotive used by the indian railway it was the most powerful freight locomotive of its fleet until the formal induction of the wag12. When fuel rose to 34 cents per gallon and the oil embargos occurred, much effort was expended studying alternatives to hydrocarbon fuels. Introduction of traction system in hindi, electrical. Yang school of electrical engineering, beijing jiaotong university, china abstract based on the physical model of the motorwheelset system, the expression of the load torque of traction motor is drawn out. 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. Ac traction motors, electrification systems, and railway signalling and control. The increasing complexity of emissionscompliant engines, means this knowledge of locomotives and their operating environment is more critical than ever.
Finding this a little too dangerous, siemens soon adopted the overheadelectric wires. Briefly described, an electric railway is a combination of a source of electric energy, means for transmitting it to vehicles along a right of way, including the raising and lower ing of electrical pressures and conversion of type of current, and motors on the. 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. A free powerpoint ppt presentation displayed as a flash slide show on id.
Abb is the expert for traction converters, motors, transformers, and complete traction chain solutions. The preserved north american electric railway cars pnaerc list is a site which seeks to document all preserved electric railway equipment built for service on this continent. The system which use electrical power for traction system i. Power supply installation in electric traction irieen. It has led to increasing demand for lightweight equipment consisting of induction motors and transistor inverters. There are several ways to implement energy saving by means of an industrial electric drive 1, 16, 17, 18. The track electrification refers to the type of source supply system that is used while powering the electric locomotive systems. 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. Electric traction rail transport alternating current. Study on the method of traction motor load simulation on railway vehicles f.
This chapter presents a general description of the elements that characterize a railway electric transportation systems. In the past, electrification has been adopted, as a rule, only when abnormal difficulties, such as the. The worlds first ac locomotive in valtelina, northern italy 18981902. Traction motors in diesel locomotives ee publishers. 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.
This book is a reproduction of that original, which has been scanned and cleaned by stateoftheart publishing tools. Performance characteristics of conductors for electric. Volumei deals with organisational setup and read more. Powerelectronics issues of modern electric railway systems a. Although experimental electric motors were built more than a century ago electric traction is a modern development.
The railway system division, in its commitment to future progress, has consistently achieved technological breakthroughs on three systems that are shaping the future worldwide. Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered rails in 1834. If electric supply is used for driving a locomotive, the system is known as electric traction. 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. Depending on whether a country had rich coal deposits or huge hydropower resources, the reasons to electrify railways would have differed. It is similar to the wap7 class locomotive but features a different gear ratio, which makes it suitable for heavy freight operations. Pdf railway electrification systems and configurations. Traction motor simple english wikipedia, the free encyclopedia. Electric traction railways electric motor components. Fashion, politic or strategic choices also influenced notably the evolution of electric traction. Friends is video me ham electric traction ke bare me discuss kar rhe hai. A railway electrification system supplies electrical energy to railway.
At present 28 per cent of route kilometres on indian railways are electrified. 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. This european standard applies to electric traction overhead contact line systems in heavy railways, light railways, trolley busses and industrial railways of public and private operators. The railway technical website is an information resource with articles about railways around the world, covering technical, operational, maintenance and financial issues. The locomotion in which the driving force is obtained from electric motor is called the electric traction system. Building an electric railway traction collectors library and a great selection of related books, art and collectibles available now at. Modeling and simulating the electric power system of an autonomous tramway, supplied either. Electric railways, as an environmentally friendly and efficient means of producing passenger and freight services, have been selected by many. Industrial training electrical loco shed, ghaziabad name. Electric locomotives do not have a conventional engine in them as we have seen in a diesel locomotive, but use the electricity. Pdf applications of power electronics in railway systems. Traction power electrification system investigation report washington metropolitan area transit authority.
Electric traction means a locomotion in which the driving force is obtained from electric motors. Electric traction is part of subject utilization of electrical energy. Electric traction was introduced on indian railways in year 1925 on1. It is hosted by the branford electric railway association and maintained by frank hicks of the illinois railway museum and jeff hakner of bera.
Powerelectronics issues of modern electric railway systems. It is used in electric trains, tramcars, trolley buses and diesel electric vehicles etc. 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. Electric traction started in europe and the usa as tramcars and subway locomotives in the 1880s powered by 500600 v dc. Study on the method of traction motor load simulation on. The entire railway electrification work shall be executed as per relevant is specifications drawings latest version applicable in all cases up to the date of tender.
It is an applicationoriented book for the design and development of traction systems accompanied by a description of the core technology. But this last offered a further expansion until which one we know today. The use of a diesel engine frees the locomotive from being coupled to an external electricity supply, and the use of electric motors and drives allows control over the traction capabilities of the locomotive which would not be possible with a direct drive from the diesel engine. Neosee boxes should manage the internal voltage of tramway whatever. 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 specific application like steel, paper, textile mills.
Three phase induction motor as traction motor railelectrica. A novel power flow algorithm for traction power supply. The focus will be on consolidating electric traction for the busiest sections. Pdf the objective of this paper is initially to present a basic modeling of the railway traction system. Pdf several different type of railway traction electric power system configurations have been used in the usa and all over the world. Electric traction is an environmental friendly, pollutionfree and energy efficient alternative to fossil fuels.
It offers several benefits over other systems, including quick start and stop, very efficient, pollutionfree, easy to handle and easy speed control. Electric traction control the railway technical website. 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. What is an electric locomotive systems and their types in india.
Download electric traction systems seminar report with ppt. System such a diesel electric drive, electric drive etc. Railway technology today 3 edited by kanji wako railway electric power feeding systems yasu oura, yoshifumi mochinaga, and hiroki nagasawa introduction electric power technology in the railway industry refers to the means of supplying goodquality electric power to the electric motors. Even so, many notable innovations occurred simultaneously yet independently. At each traction substation, normally two single phase transformers are installed, one which is in service and the other is 100% stand by. Traction systems for locomotives and high speed applications. Traction power electrification system investigation wmata. Railway electrification interest peaks during times of uncertainty in the energy industry. In deep and trustful partnerships with vehicle builders, refurbishers, and rail operators, we supply stateoftheart traction systems. A long tradition in electric railway engineering electrifying history. Find the most uptodate version of en 50119 at engineering360. Pdf railway technical web pages electric traction power. Traction motors are used in electrically powered rail vehicles such as electric multiple units and electric locomotives.
May 12, 20 right from the introduction of electric traction, there was a strong desire to use three phases induction motor for traction application. Electric traction motor market global forecast to 2025. The major advantages of electric traction are, economy in operation and maintenance, saving in consumption of scarce diesel oil and increased through put of traffic. Scribd is the worlds largest social reading and publishing site. For traction purpose 3phase induction motor and dc series motor are used and both have high starting torque provide high speed acceleration. Railway traction system pdf different types of railway traction and their importance in the. Stations, booster transformer stations and traction substations along with technical specifications of materials, components, fittings etc. The problem of determination of the accurate distribution of the return current in at autotransformer electric traction systems supplied at 2. The year 1881 saw the birth of the first electric railway run by a germanengineer werner van siemens using both the rails to carry the current. This could only be possible with the introduction of variable voltage variable frequency control. Locomotive traction diesel electric applications use a diesel engine to drive an electric.
Electric traction substations study of railway seminarrs. Pdf ac dc railway electrification and protection researchgate. 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. Current status and apportunities 49 passenger traffic and 65. Pdf the technical strength of all electrification schemes lies in the fact that the. 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. Electric traction 1701 however, the steam locomotive suffers from the following disadvantages. 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. 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.
A railway electrification system supplies electric power to railway trains and trams without an onboard prime mover or local fuel supply. The permissible range of voltages allowed for the standardised voltages is as stated in standards bs en 50163 and iec 60850. Railway electrification systems and configurations. Railway technology today 3 edited by kanji wako railway. Powering the railways in the usa efficient and reliable. Electric railway traction systems and techniques for energy. Electric traction system engineering seminar topics. By electric traction is meant locomotion in which the driving or tractive force is obtained from electric motors. There are various system of electric traction existing such as electric train, trolley buses, diesel electric vehicles and gas turbine electric vehicles.
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