Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered rails in 1834. The nonlinear and dynamic natures of the modern trains make the calculation and evaluation of such power quality pq problems quite a di. Pdf lightning protection zones created by traction. This traction power can be diesel, steam or electric power. Friends is video me ham electric traction ke bare me discuss kar rhe hai. 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. Sources include overhead lines, third rail, or an onboard electricity storage device such as a battery, flywheel system, or fuel cell. Example of an ertc showing the external supply line, a circuit breaker which connects the required conversi on scheme, a first power conversion stage when an ac supply line is employed acdc converter in this case, the body link, two 3phase. A railway electrification system supplies electric power to railway trains and trams without an onboard prime mover or local fuel supply. Non electric traction systemmechanical traction system. Introduction the railway as a means of transport is a very old idea. Railway technology systems index 001 002 company stemmanntechnik 003 worldwide presence railway products, quality made in germany 004 metro and suburban systems third rail shoegears 005 systems for third rail shoegears 006 components for third rail shoegears 007 008 suburban railway roofmounted pantographs for suburban railway.
Railway technology today 3 edited by kanji wako railway. Introduction of traction system in hindi, electrical. Traction systems all traction systems may be classified into two categories. Traction motor used for traction purpose is dc series motor, separately excited dc series motor, three phase induction motor, synchronous motor and permanent magnet synchronous motor. If the electric energy is use in this process is called electric traction. The main reason for 25kv voltage used in railway is, that 25 kv ac more economical than 1. A free powerpoint ppt presentation displayed as a flash slide show on id. Railway works under the indian railway which is a stateowned organization of the ministry of railway. Railway technical web pages electric traction power supplies contents.
Volumei deals with organisational setup and read more. Pdf railway technical web pages electric traction power. Traction power facilities california highspeed rail. Comprehensive topological overview of rolling stock. 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 elec. Railway is a largest means of transportation in india and it is ranked in the world as fourth largest railway network. Pdf distribution of the traction return current in ac. Fashion, politic or strategic choices also influenced notably the evolution of electric traction. Electric traction 1701 however, the steam locomotive suffers from the following disadvantages. Energysaving technology for railway traction systems using. There are various system of electric traction existing such as electric train, trolley buses, dieselelectric vehicles and gas turbine electric vehicles.
Railway transportation systems for a comfortable future. Electric traction on indian railways indian railway employee. Electric traction is an environmental friendly, pollutionfree and energy efficient alternative to fossil fuels. In this paper, we present the theory which allows modeling and determination of the emrts electric. Power requirement for railway electrification has been of the order of 50 kwtrack km. 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. System such a diesel electric drive, electric drive etc. In an electric traction system the driving force to pull a train is generated by the traction motors.
Traction motors are used in electrically powered rail vehicles electric multiple. Simulation models have been proposed for the calculation of the induction motor dynamic characteristics. A novel power flow algorithm for traction power supply. 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. Comments on the regional railroad network and power grid interconnection pdf. At present 28 per cent of route kilometres on indian railways are electrified. The accuracy of the designed method and comparison of the simulated results with the prototype data have. At its beginnings, it was mainly utilised in the central european mines with diffe rent means of traction being applied. The electric traction system can be broadly divided into two groups. Reliability and lifetime prediction for igbt modules in railway traction chains 195 fig.
Italian railways were the first in the world to introduce electric traction for the entire length of a mainline rather than just a short stretch. Electric traction alternating current electric power. Electric traction helps in saving of high grade coal which is limited in quantity in our country. Pdf electric power demand model for railway traction. Ppt electric traction system powerpoint presentation. On electrifications, technologically strong solutions were implemented until ones with. Our traction systems, including traction converters. A fully electrified railway has no need to switch between methods of traction thereby making operations more efficient.
A traction motor is an electric motor used for propulsion of a vehicle, such as locomotives, electric or hydrogen vehicles, elevators or electric multiple unit. In deep and trustful partnerships with vehicle builders, refurbishers, and rail operators, we supply stateoftheart traction systems. 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. Traction systems for locomotives and high speed applications. The energy cost of a rail transport system is very big especially for the tractions of trains in its daily operation. Overall tractive effort is limited by number of driven wheels and maximum torque of the traction motors. 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. Over the last 20 years the railway traction systems went trough.
Our locos move the nation ir purchased 4000 hp wdg4 and wdp4 locomotives from general motors, usa in 1995 and 1996. Traction systems broadly speaking, all traction systems may be classified into two categories. Traction induction drive for railway chuev denis epe 2003 toulouse isbn. 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.
Summer training report on electric traction indian railway ahmedabad division marudhar engineering college page 1 1 introduction an electric locomotive is a locomotive powered by electricity from an external source. Electric traction has many advantages as compared to other nonelectrical systems of traction including steam traction. Economics of electric vs diesel traction railelectrica. Continual effort on decreasing the traction energy cost intensities of various rail transport modes has been made by many researchers and practitioners on different aspects for a long time. This chapter presents a general description of the elements that characterize a railway electric transportation systems. Why 25kv is used in railway traction system electrical4u. Electric railways, as an environmentally friendly and efficient. The locomotion in which the driving force is obtained from electric motor is called the electric traction system. Railway and electric traction history is closely linked with the electrotechnic development rhythms, in particular transformers, motors and semiconductors. It is similar to the wap7 class locomotive but features a different gear ratio, which makes it suitable for heavy freight operations. This book is a reproduction of that original, which has been scanned and cleaned by stateoftheart publishing tools. Reliability and lifetime prediction for igbt modules in. The trend of electrical and diesel energy cost in terms of unit charges and rslitre as compiled in the annual statistical statement of. What is an electric locomotive systems and their types in.
The railway system division, in its commitment to future progress, has consistently achieved. Industries, supported by university researchers, are looking into alternative electrification systems for new and existing railway lines around the world static frequency converters sfcs have been recognisedas the future as feederstation for railway traction systems due to their numerous benefits. The electrified mass rapid transit systems emrts are one of the possible alternatives in solving mobility problems in urban and interurban areas. Abbs railway portfolio covers the whole range of both ac and dc systems for. Electric traction system main free download as powerpoint presentation. Economics of electric vs diesel traction on account of fuel cost is evaluated based on the rupees spend towards energy bill for hauling gtkm of load. Electric railways use either electric locomotives hauling passengers or freight in separate cars or electric multiple units passenger cars with their own motors. Msc, rail systems engineering university of birmingham. Trains that are powered by storage batteries and use a hybrid drive system have fewer mechanical. Electric traction system main locomotives rail transport. English pdf brochure traction systems for light rail vehicles selected. By electric traction is meant locomotion in which the driving or tractive force is obtained from electric motors it is used in electric trains,tramcars,trolly buses and dieselelectric vehicles etc. This first article covers the nature of the traction load, the requirements of the traction duty cycle and power electronic.
All ehv and 25 kv equipment is owned, installed, operated and maintained by the supply authority but 25 kv feeder circuit breakers alone are operated on remote control by the traction power controller tpc. 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. It can also be defined as the railway vehicle that provides the necessary traction power to move the train is referred as the traction or locomotive. The track electrification refers to the type of source supply system that is used while powering the electric locomotive systems. Power supply installation in electric traction irieen. Traction system which do not involve the use of electricity such as steam engine drive, ic engine drive etc. An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or. The development and advancement of power electronics and. Abb is the expert for traction converters, motors, transformers, and complete traction chain solutions.
The system which use electrical power for traction system i. The typical pq problems in highspeed railway hsr are. The articles cover traction drives with dc and ac traction motors, electrification systems, and railway signalling and control systems. Traction systems for locomotives and highspeed applications english pdf. In order to provide a dependable and cost effective traction power supply system tps for the california highspeed train project chstp the placement, size, and power conditioning of the traction power facilities tpf will be a priority during all phases of the design process. California high speed train project traction power 2x25kv autotransformer electrification system, r2 2. The traction system can be classified as non electric and electric traction systems. At its beginnings, it was mainly utilised in the central european mines with different means of traction being applied.
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