In an electric traction system the driving force to pull a train is generated by the traction motors. Electric traction has many advantages as compared to other nonelectrical systems of traction including steam traction. 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. Electric traction control the railway technical website. When fuel rose to 34 cents per gallon and the oil embargos occurred, much effort was expended studying alternatives to hydrocarbon fuels. Find the most uptodate version of en 50119 at engineering360.
Studies showed that an estimated 34% savings in energy could be achieved by using electric power. Which of the following is an advantage of electric traction over other methods of traction. A railway electrification system supplies electric power to railway trains and trams without an onboard prime mover or local fuel supply. Voltage ehv at each traction substation which is owned, installed, operated and maintained by the railways. Finding this a little too dangerous, siemens soon adopted the overheadelectric wires. Pdf the technical strength of all electrification schemes lies in the fact that the. Railway technology today 3 edited by kanji wako railway. Request pdf digital model of railway electric traction lines the characteristic impedance and propagation constant define the behavior of signal propagation over the transmission lines. 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 predecessor company of abb secheron in geneva supplies the first electric tramcars in france to the city of clermontferrand.
Storage battery control has also been used for the absorption of regenerative electric power and to implement the regenerative. Stations, booster transformer stations and traction substations along with technical specifications of materials, components, fittings etc. Energysaving technology for railway traction systems using. Three phase induction motor as traction motor railelectrica. In the past, electrification has been adopted, as a rule, only when abnormal difficulties, such as the. There are various systems of traction prevailing in our country such as steam engine drive, electric drive.
It is used in electric trains, tramcars, trolley buses and diesel electric vehicles etc. Design of power supply system in dc electrified transit railways diva. The city and south london tube railway was opened in 1890, and marked the progress of electric traction. Pdf railway technical web pages electric traction power. Pdf power quality issues in railway traction system. Nov 19, 20 classified broadly into two groups namely. The electric traction system can be broadly divided into two groups. Concurrentfeeding power switching system for shinkansen switching sections in japanese. Railway electric propulsion systems integrated circuits. Basic notions for the study of electric traction systems 17. Where this has not been done already, urgent action should be taken to have it finalized without delay. Published by traction orange company, wheaton, il 1966. On electrifications, technologically strong solutions were implemented until ones with. This chapter presents a general description of the elements that characterize a railway electric transportation systems.
Delivery of leadingedge electric systems for new emus of west japan railway company. Electric traction means a locomotion in which the driving force is obtained from electric motors. Electric locomotives do not have a conventional engine in them as. 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. This book is a reproduction of that original, which has been scanned and cleaned by stateoftheart publishing tools. Special type tests and quality control ensure safe operation, while abbs product support and service network. Power supply installation in electric traction irieen. Railway transformers 5 ac traction feeder transformers application ac traction feeder transformers are used between normal threephase ac networks and singlephase catenary systems. Toshiba to showcase hybriddieselbattery locomotive demonstrator at transport logistic 2019. The model of two substation rectifiers in one track section with the conventional twolevel traction drive has been proposed which is according to the. Electricity is typically generated in large and relatively efficient generating. The problems of electric traction on railways deserve special study at the present time. Electric traction system 1 electric traction system presented by amit raj roll no. Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered.
Our integrated circuits and reference designs for railway electric propulsion systems help you create high performance traction inverters with accurate control, multiprotocol train communication interfaces, robust isolation and emc immunity for high reliability. Electrical railway transportation systems wiley online books. It offers several benefits over other systems, including quick start and stop, very efficient, pollutionfree, easy to handle and easy speed control. 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.
For traction purpose 3phase induction motor and dc series motor are used and both have high starting torque provide high speed acceleration. Application status and issues of electric double layer capacitors for electric railway application status and issues of electric double layer capacitors for electric railway beijing jiaotong university zhongping yang 2012. This second edition also includes a section on permanent magnet synchronous motors and lighter inverterfed mediumfrequency transformers for 167 hz. Fashion, politic or strategic choices also influenced notably the evolution of electric traction. Electric railways, as an environmentally friendly and efficient means of producing passenger and freight services, have been selected by many. What is an electric locomotive systems and their types in. This paper presents a comprehensive simulation model of a dc traction system with vector control drive. In 1881, siemens halske built the worlds first electric railway in lichterfelde marking the first passenger electric railway. Download electric traction systems seminar report with ppt. System of electric traction mechanics of train movement. The worlds first electric rack railway is installed at the montsaleve near geneva, using 500 v dc. Jun 18, 20 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.
Scribd is the worlds largest social reading and publishing site. 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. An electric locomotive is essentially a box full of transformers and semiconductors that converts electricity collected from external sources to the desired voltage to drive the traction motors. Electric traction was introduced on indian railways in year 1925 on1. Act of drawing or state of being drawn propulsion of vehicle is called tractions. 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. Studies electric traction railway vehicles, presenting various types of drives and auxiliary devices currently in circulation.
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. T railway technology today 4 edited by kanji wako what. 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. Discusses solutions employed to ensure interoperability of vehicles that run along lines powered by different systems e. Nov 30, 2015 the electric traction system is the most efficient of all other traction system such as steam and internal combustion ic engine type systems. Railway applications fixed installations electric traction overhead contact lines 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. Ac induction motor is equivalent to transformer where secondary is short circuited and free to rotate.
The electric traction system is the most efficient of all other traction system such as steam and internal combustion ic engine type systems. Industrial training electrical loco shed, ghaziabad name. Modeling and simulation of railway electric traction with vector control drive abstract. Speed trains hsts capable ofcrossing the borders of the.
The tubes of the original line had a 10 ft 2 in diameter compared to the 11 ft 8. Ppt electric traction system powerpoint presentation free. Digital model of railway electric traction lines request pdf. Electric railways use either electric locomotives hauling passengers or freight in separate cars, electric multiple units passenger cars with their own motors or both. Railway and electric traction history is closely linked with the electrotechnic development rhythms, in particular transformers, motors and semiconductors. Three phase primary winding is mounted on stator distributed spatially at 120 degree.
Introduction establishment electric loco shed was set in 1976 by railway electrification organisation 8910 sq. Modeling and simulation of railway electric traction with. Also, measurements of electrical and magnetic fields inside the traction substation and in its vicinity were undertaken. In railway traction terms, a quill drive is where a hollow shaft is placed round the driving axle.
Dc traction motors, which have been in use for a long time, are being replaced by ac motors. 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. May 22, 2018 download electric traction systems seminar report with ppt. Railway electric propulsion systems integrated circuits and. The permissible range of voltages allowed for the standardised voltages is as stated in standards bs en 50163 and iec 60850. Studies electric traction railway vehicles, presenting various types of drives and auxiliary devices currently in circulation discusses solutions employed to ensure interoperability of vehicles that run along lines powered by different systems e. 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.
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. Technical authority electrical systems integration. Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered rails in 1834. Railway electrification interest peaks during times of uncertainty in the energy industry.
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. The main advantage of electric traction is a higher powertoweight ratio than forms of traction such as diesel or steam that generate power on board. In countries where 60 hz is the normal grid power frequency, 25 kv at 60 hz is used for the railway electrification in argentina on roca line using 1,676 mm or 5 ft 6 in gauge in canada on the deuxmontagnes line of the montreal metropolitan transportation agency in japan, tokaido, sanyo and kyushu shinkansen lines using 1,435 mm or 4 ft 8 1. Resultant field flux produced in the air gap, due to time and space varying each phase flux, is of constant magnitude but rotating at a synchronous speed of ns. 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. Electric has delivered its propulsion system including traction motors, traction converters, and traction transformers for successive generations of shinkansen trains from the. Design and testing of 25 kv ac electric railway power. Electric traction railways electric motor components.
Railway technical web pages electric traction power supplies contents. Ac traction motors, electrification systems, and railway signalling and control. A novel power flow algorithm for traction power supply. 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. 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. Ppt electric traction system powerpoint presentation. By electric traction is meant locomotion in which the driving or tractive force is obtained from electric motors. Electric traction railways free download as powerpoint presentation. Speed time, distance time and simplified speedtime curves, attractive effort for acceleration and propulsion, effective weight, train resistance, adhesive weight, specific energy output and consumption.
945 1235 257 558 911 72 1247 1004 228 984 1320 1460 689 187 450 12 956 392 222 979 223 1306 623 136 1186 1374 1146 689 158 1200