Ppt electric traction system powerpoint presentation free. Pdf version75kb tokyo, april 30, 2014 mitsubishi electric corporation tokyo. Pdf the problem of the determination of the real distribution of the return current in electric railway traction systems is considered. Railway traction system pdf different types of railway traction and their importance in the. If the electric power is for an ac electric railway, it is returned. Italian railways were the first in the world to introduce electric traction for the entire. On the nationalisation of the railways in 1948 he was appointed chief electrical engineer to the railway executive, and relinquished this post in 1950 to become general manager of the traction department of the english electric co. Traction power electrification system investigation report washington metropolitan area transit authority. Electric traction systems are various electrical systems that are used to drive railways. A predecessor company of abb secheron in geneva supplies the first electric tramcars in france to the city of clermontferrand.
Electric traction has many advantages as compared to other nonelectrical systems of traction including steam traction. The balanced quantities in each length are thus ignored. Energysaving technology for railway traction systems. Electricity is typically generated in large and relatively efficient generating. Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered. Traction motors in diesel locomotives ee publishers. Traction means drawing or pulling something over a surface.
City electric transport republic of latvia supply of rectifiers for traction substations of riga city electric transport. Railway and electric traction history is closely linked with the electrotechnic development rhythms, in particular transformers, motors and semiconductors. Energysaving technology for railway traction systems using onboard storage batteries 315 the following section describes the operational trials and associated results for the other function. Rail transport is coming back into favour for the transportation of goods over long distances. Electric traction 1701 however, the steam locomotive suffers from the following disadvantages. With direct current, the most popular line voltages for overhead wire supply systems have been. Harmonic and unbalance compensation based on direct power. Pdf dc traction load flow including ac distribution network. One of the major application of an electric drive is to transport men and materials from one place to another. Electric traction system engineering seminar topics. Tokyo, april 30, 2014 mitsubishi electric corporation tokyo. Habetler, fellow, ieee abstractthis work presents a general. Traction electricity rules effective 1st december 2017. Aug 03, 2004 the mind is idling right at the moment.
Propulsion by traction electric motor in acceleration when the. Optimising power management strategies for railway traction. Principle of operation the performance of a regenerative brake for rolling. Free from smoke and flue gases hence used for underground and tubular railway. Railway technology today 3 edited by kanji wako railway. Electric railways use either electric locomotives hauling passengers or freight in separate cars, electric multiple units passenger cars with their own motors or both. Length this km km also enables haulage of heavier loads 1 united 226,427 nov 19, 20 railway training ppt 1. In an electric traction system the driving force to pull a train is generated by the traction motors.
Then, variable speed electric drive of railway traction is studied, analyzing different configurations and also their relation with the railway power supply system. What is an electric locomotive systems and their types in india. The electric traction system can be broadly divided into two groups. Act of drawing or being drawn is known as traction. The city and south london tube railway was opened in 1890, and marked the progress of electric traction. Electric traction was introduced on indian railways in year 1925 on 1. Introduction establishment electric loco shed was set in 1976 by railway electrification organisation 8910 sq. Mitsubishi electric news releases,mitsubishi electric to. Simulation tools are now considered as a standard part of the design and analysis of traction power systems. 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. Traction electric drive for railway application has to provide the adjustment of both rotor speed and. Some electric traction systems provide regenerative braking that turns the trains kinetic. 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. Tokyo, june 25, 2015 mitsubishi electric corporation announced today that it has completed the installation of, and begun testing, railcar traction converterinverter systems with allsilicon carbide sic power modules on n700 shinkansen bullet trains for central japan railway company jrcentral.
Mitsubishi electric news releases mitsubishi electric. Fashion, politic or strategic choices also influenced notably the evolution of electric traction. Power electronics technologies for railway traction systems 309 a maximum of 3. 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. Could it be that the phrase electric traction originated a loooong time ago to distinguish an electric powered street car from, say, a horse drawn street car, a cable powered street car, or a gravity powered street car, possibly even a steam dummy powered streetcar. The most popular line voltages for overhead wire supply systems 1500v dc and 3000v dc. Pdf traction energy consumption of electric locomotives.
Thyristors in railway traction how can their effects be measured. Thyristors in railway traction how can their effects be. This book is a reproduction of that original, which has been scanned and cleaned by stateoftheart. The train, powered by ac traction motors and composed of an electric locomotive or electric multiple units emus, is called an acdcac. The drive which uses the electric power for moving forward, such type of drive is called an electric traction drive.
Electric traction rail transport alternating current. The energy cost of a rail transport system is very big especially for the tractions of trains in its daily operation. Restrepo, member, ieee, ronald harley, fellow, ieee, and thomas g. 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. If electric supply is used for driving a locomotive, the system is known as electric traction. What is an electric locomotive systems and their types in. In coasting, the diesel engine continues to supply energy to the generator for some time, and the generated electricity is used to charge the battery. A railway electrification system supplies electrical energy to railway. Feb 20, 2018 dc traction dc traction units use direct current drawn from either a conductor rail or an overhead line. A railway electrification system supplies electric power to railway trains and trams without an.
Power electronics technologies for railway traction systems. For the sake of simplicity, the leakage resistors have been ignored in this study. Industrial frequency singlephase ac traction power supply system. Railway traction systems alternating current electric motor. E consulting engineer, professor of electric railway engineering. Pdf distribution of the traction return current in ac and dc. Act of drawing or state of being drawn propulsion of vehicle is called tractions. It is used in electric trains, tramcars, trolley buses and diesel electric vehicles etc. Ingeteam is a market leader specializing in electrical engineering and the development of electrical equipment, motors, generators and frequency converters. Aug 31, 20 25 kv traction power system was designed, developed and demonstrated all over world by sncf. Electric equipment of privaterailway highspeed emus was comprised mostly of imports. 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. Industrial training electrical loco shed, ghaziabad name. Current status and apportunities 49 passenger traffic and 65.
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. The permissible range of voltages allowed for the standardised voltages is as stated in standards bs en 50163 and iec 60850. The worlds first electric rack railway is installed at the montsaleve near geneva, using 500 v dc. This article takes a look at the role that electric motors play in this sector of the transport industry. Developments in traction systems university of birmingham. Introduction classification electric traction railway traction third rail. 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.
A railway electrification system supplies electric power to railway trains and trams without an onboard prime mover or local fuel supply. Powering the railways in the usa efficient and reliable. On electrifications, technologically strong solutions were implemented until ones with. Pdf traction energy consumption of electric locomotives and. Introduction classification electric traction railway traction third rail system overhead system traction is defined as. The railway traction systems under study, taking account of all the processes of. The electric traction system 25kv, 50hz and the traction vehicle with threephase induction motors were modeled including acdc recti. 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.
Still another correction is that the diesels reported efficiency neglects the fan energy used for. Traction energy consumption of electric locomotives and electric multiple units at speed restrictions article pdf available july 2015 with 6,234 reads how we measure reads. The shift to domestic production of electric equipment for public trams was going forward at the time, but these were simply exact copies. 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. Railway traction systems alternating current electric. The converter circuit of the converterinverter system has a dual configuration for. When braking, the traction electric motor operates as a generator, and the generated electricity is used to charge the battery. An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or. Traction power electrification system investigation wmata. Multitrain simulation of dc rail traction power systems with. There are various systems of traction prevailing in our country such as steam engine drive, electric drive. Railway traction, reliability and safety in railway, xavier perpinya, intechopen, doi.
The mentioned hybrid propulsion has been programmed so as to operate in the following way figure 5. Archived from the original pdf on november 25, 2005. Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered rails in 1834. Multitrain simulation of dc rail traction power systems. Georgian railways georgiasupply of sectioning point psk3. Ppt electric traction system powerpoint presentation. Federal transit administration december 9, 2016 8 new insulators that can be removed for cleaning and then reinstalled. Types of traction systems electrictraction systems can be broadly divided into those using alternating current and those using direct current. 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 system 1 electric traction system presented by amit raj roll no. The tubes of the original line had a 10 ft 2 in diameter compared to the 11 ft 8. Indian while completing electrification of hwhbardwan section of eastern railway decided to adopt 25 kv system in collaboration with sncf and converted 3000v dc just when it was completed into 25 kv instead running it at 3000 v dc. In 1881, siemens halske built the worlds first electric railway in lichterfelde marking the first passenger electric railway. System of electric traction mechanics of train movement.
With a view to reduce dependence on petroleum based electrifie country railway d length energy ir has switched over electric traction. There may be two types of traction classifications on the basis of power supply. Also, electric power greater than that at powered running is sent to the overhead contact lines when regenerating. By electric traction is meant locomotion in which the driving or tractive force is obtained from electric motors. 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.
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