The permissible range of voltages allowed for the standardised voltages is as stated in standards bs en 50163 and iec 60850. Pdf comparison criteria for electric traction system using. There are many advantages of electric traction over other forms of locomotion. 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. Pdf basic modeling for electric traction systems under uncertainty. Traction power electrification system investigation wmata. Jul 31, 2014 2 what are the advantages and disadvantages of electric traction system.
Pdf comparison criteria for electric traction system. Also get details of the dc traction systems, ac systems, composite systems etc. As a major supplier of traction systems, abb works with most. Many traction systems have been developed over the period depending on dominant technologies at that time and traffic demand. Speed time, distance time and simplified speedtime curves, attractive effort for acceleration and. Traction power electrification system investigation report washington metropolitan area transit authority. We encourage you to write your suggestions, comments, and feedback about this article or project ideas in the comment section given below, and also expect your suggestions to reduce the short circuits accidents in the traction systems.
Urbanization coupled with technological developments are the major drivers of the electric traction systems market globally. It is used in electric trains, tramcars, trolley buses and diesel electric vehicles etc. Electric traction systems may be broadly categorized as those operating on. May 19, 2016 the traction system which uses the electricity at some stage is called as electric traction systems. Direct current dc traction units use direct current drawn from a third rail, fourth rail, groundlevel power supply or an overhead line. One of the main reasons for this is the availability of regenerative braking systems. 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 diesel electric vehicles etc.
Jun 27, 20 electric traction will continue to play a dominant role in the railway since it is an environmentally clean technology compared to diesel traction and also its running cost is low. 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. By electric traction is meant locomotion in which the driving or tractive force is obtained from electric motors. It has great passenger carrying capacity at higher speed.
Traction system for urban, suburban and main line transport developed over the period are at 750v dc, 1500v dc, 25kv ac, 2x25kv and 50kv ac. The traction system can be classified as nonelectric and electric traction systems. Wide outputregulation range reduction of switching losses on the primary side through zero voltage switching zvs over the entire load range. By using regenerative brakes, the traction motor acts as a generator and converts kinetic energy back to electrical energy. Under the scope of this report, electric traction systems are covered. Electric traction systems market size share growth outlook 2025. There may be two types of traction classifications on the basis of power supply.
One of the major application of an electric drive is to transport men and materials from one place to another. Electric traction systems market global industry analysis. Compliance with the limits stipulated in specific standards and. 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. On the basis of type, the market for electric traction systems has been segmented in the report into electric traction transformer, electric traction motor, electric traction generator, electric traction inverter, electric traction converters, and others. Ac traction motors, electrification systems, and railway signalling and control. Advantages of ac traction systems it is possible to use regenerative braking in electric traction system. Jr groups renew maximum speed records for their trial shinkansen. What is an electric locomotive systems and their types in india. Electric traction has many advantages as compared to other non electrical systems of traction including steam traction. The motors used in electric traction have a very high starting torque. Traction systems broadly speaking, all traction systems may be classified into two categories. In general, diesel, steam and electric based traction systems are covered under traction systems. Traction system for electric vehicles using a variable frequency threephase induction motor driver with regenerative braking.
Nov 30, 2015 this traction power can be diesel, steam or electric power. Current situation and prospects of electric traction systems used in. A novel electric traction power supply system using hybrid. Pdf the objective of this paper is initially to present a basic modeling of the railway traction system. Power electronics technologies for railway traction systems 307 the east japan railway company is developing a nextgeneration rolling stock control system for the experimental series 209 the multipurpose experimental train muetrain. Chapters on electrical drives and electric traction. Thirdrail systems are predominantly in the 600750 volt range. Traction systems all traction systems may be classified into two categories. Ac voltage is converted into dc voltage by using a rectifier. Diesel electric drive battery electric driver and straight electric drive. 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 mcqs answers pdf electrical engineering multiple choice questions answers. Electric railways use either electric locomotives hauling passengers or freight in separate cars or electric multiple units passenger cars with their own motors. Pdf electric drives of traction rolling stocks with ac. In deep and trustful partnerships with vehicle builders, refurbishers, and rail operators, we supply stateoftheart traction systems. Federal transit administration december 9, 2016 8 new insulators that can be removed for cleaning and then reinstalled.
Electric traction has many advantages as compared to other nonelectrical systems of traction including steam traction. The locomotion in which the driving force is obtained from electric motor is called the electric traction system. System of electric traction mechanics of train movement. Abb is the expert for traction converters, motors, transformers, and complete traction chain solutions.
Electric traction the system which use electrical power for traction system i. This article explains about electric traction systems and their. Traction transformation 15 inductances and the external circuits capacitors, a resonant llc circuit is created l r, l m and c r as shown in 5. Electric traction systems are most commonly seen in propulsion of railway vehicles. Energysaving technology for railway traction systems. The traction system which does not use the electricity at any stage is called as non electric traction system.
Electric traction railways electric motor components. Electric traction systems market size share growth outlook. The track electrification refers to the type of source supply system that is used while powering the electric locomotive systems. Hybrid traction systems of lithiumion batteries with fuel cells or diesel engines are the one of. The system which use electrical power for traction system i. In ohe, or overhead electrification systems, the supply of electricity is through an overhead system of suspended cables known as. Hybrids traction systems whats in store for the future. Types of traction systems electrictraction systems can be broadly divided into those using alternating current and those using direct current. The traction system which uses the electricity at some stage is called as electric traction systems. Electric traction completed course by nikhil nakka youtube. Optimising power management strategies for railway traction.
This chapter presents a general description of the elements that characterize a railway electric transportation systems. Electric traction will continue to play a dominant role in the railway since it is an environmentally clean technology compared to diesel traction and also its running cost is low. Spun off from hydroquebec in 1998, tm4 pioneered the electric propulsion system. It consists of nine chapters in all, covering the various topics systematically and exhaustively. Scribd is the worlds largest social reading and publishing site. Pdf power quality analysis in electric traction system with three. Here power is applied to the vehicle from an overhead wire suspended above the track. If you continue browsing the site, you agree to the use of cookies on this website. Among the different types of rolling stocks, electric traction systems are most commonly utilized for railways. Energysaving technology for railway traction systems using onboard storage batteries 3 company, hitachi started developing a series hybrid drive system in 2001 that combined a diesel engine and lithiumion batteries with the aim of reducing the fuel consumption and harmful exhaust emissions of. Electric traction systems are various electrical systems that are used to drive railways. 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.
Current situation and prospects of electric traction. Energysaving technology for railway traction systems using. Selection of traction system voltages railelectrica. Ppt electric traction system powerpoint presentation. The drive which uses the electric power for moving forward, such type of drive is called an electric traction drive. The steam engine drive is the best example of a non electric traction system and it is the first locomotive system used before the invention of actual electric traction systems. 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 means using the electric power for traction system i. Pdf threephase induction motors are widely used in electric traction systems. Hybrid traction technologies with energy storage devices for.
These systems of tractions may be classified broadly into groups namely. Comparison criteria for electric traction system using zsourcequasi zsource inverter and conventional architectures. Power electronics technologies for railway traction systems. Hybrid regenerative system on power electronic transformer for. Traction means drawing or pulling something over a surface. Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered rails in 1834. A railway electrification system supplies electric power to railway trains and trams without an onboard prime mover or local fuel supply. Electric traction mcqs answers pdf electrical engineering. Dieselelectric drive battery electric driver and straight electric drive. Electrical traction systems are the most energy efficient traction systems in the railway sector. Manufacture of components for drive systems, such as.
A plethora of systems emerged in the first twenty years of the twentieth century. In general following electric traction systems exist. Ppt electric traction system powerpoint presentation free. Electric traction supply system on indian railways. 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. Apr 15, 2019 course is helpful for various competitive exams like engineering entrance, pgecet, psu recruitments, ecet, leet etc. Traction systems for locomotives and high speed applications. Traction power system, disturbances, grid, unbalanced, power electronics, ac feeding systems. Information on further sensors, which work in the systems, can be found in selfstudy programme. Electric traction motors segment to register moderate growth but retain dominant.
With direct current, the most popular line voltages for overhead wire supply systems have been 1,500 and 3,000. Electric traction system requirements, terms, advantages. Electricity is typically generated in large and relatively efficient generating stations. What is an electric locomotive systems and their types in. Vvvf inverter and delivery of it to tokyu electric railway co. Course is helpful for various competitive exams like engineering entrance, pgecet, psu recruitments, ecet, leet etc. The various systems usually make use of the same types of sensor. 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. Multiple drive systems per vehicle can be supported due to the safety case and levels of torque integrity employed. The paper considers the variation of circuit design of the electric drives in traction rolling stocks when traditional dc electric machines are replaced with ac electric machines. Electric traction alternating current electric power. Electric traction railways free download as powerpoint presentation.
The chapters dealing with the traction control and assist systems are therefore preceded by a brief chapter co ncerning the manner in which certain new sensors function. Analysis of electric powers parameters in supplying of railway electric traction systems ioan baciu corina daniela cunlan gabriel nicolae popa anca iordan electrical engineering and industrial informatics department polytechnic university of timisoara revoluniei str. Abb supplies complete traction systems that power many of the worlds highspeed trains including the traction transformers, traction converters and traction motors, as well as the auxiliary converters that distribute the power to the trains onboard applications. Which of the following is an advantage of electric traction over other methods of traction. With direct current, the most popular line voltages for overhead wire supply systems have. Consequently, most of the new technologies are focused on reducing the traction related energy consumption, for instance, adopting electrical traction systems. May 22, 2016 electric traction means using the electric power for traction system i. Pdf traction system for electric vehicles using a variable. Traction system employed in locomotives can be electric or non electric. This book is a reproduction of that original, which has been scanned and cleaned by stateoftheart publishing tools. Analysis of electric powers parameters in supplying of. Oct 7 general 14390 views 2 comments on explain different types of traction system. There are various system of electric traction existing such as electric train, trolley buses, dieselelectric vehicles and gas turbine electric vehicles.
Electric traction systems and their advantages electronics hub. Rajput this book on utilisation of electrical power including electrical drives and electric traction has been written for students preparing for b. Now a day, magnetic traction is also used for bullet trains. A traction system that doesnt use electrical energy for the movement of vehicle at any stage is referred as nonelectric traction system. Electric traction rail transport alternating current. Electric traction system engineering seminar topics. The traction motor is suitable for a range of vehicle applications, from medium size passenger cars to light duty commercial vehicles. 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. Impacts of the traction vehicle equipped by threephase induction. Optimising power management strategies for railway. Hybrids traction systems whats in store for the future of. Hence, it is possible to achieve higher acceleration of 1. Utilization of electrical enrgy and electric traction. Although cophase traction power supply is more advantageous, its development is somehow limited by the high operation voltage and initial cost of the compensator.
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