Electric traction means using the electric power for traction system i. Scribd is the worlds largest social reading and publishing site. 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. Electrical drives and traction veer surendra sai university.
The electric traction system is the most efficient of all other traction system such as steam and internal combustion ic engine type systems. Traction power electrification system investigation wmata. System of electric traction mechanics of train movement. In an electric traction system the driving force to pull a train is generated by the traction motors. In this page you can learn various important electric traction multiple choice questions answers, mcq on electric traction, short questions and answers on electric traction, sloved electric traction objective questions answers etc. Electric traction system engineering seminar topics. With direct current, the most popular line voltages for overhead wire supply systems have been 1,500 and 3,000. 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. Electric railways use either electric locomotives hauling passengers or freight in separate cars, electric multiple units passenger cars with their own motors or both. The evidence of this mode of running can still be seen on the track down the slope on the. Power quality analysis in electric traction system with threephase. These systems of tractions may be classified broadly into groups namely.
Pdf brushless dc motor design for electric traction system. Mar 28, 2020 the marketwatch news department was not involved in the creation of this content. The detailed terms of reference of the subcommittee is given in annexure i terms of. For traction purposes mostly 3phase induction motors and d. The two most important issues to estimate given a certain power system configuratio n, when planning for an electric traction system, are the energy consumption of.
Rajput this book on utilisation of electrical power including electrical drives and electric traction has been written for students preparing for b. Electric traction multiple choice questions mcq and. Brushless dc motor design for electric traction system. Power supply installation in electric traction irieen. Ppt electric traction system powerpoint presentation free. Due to rugged construction, less control complexity, higher power density, variable speed over a wide range and flexibility to select the rotor construction. The track electrification refers to the type of source supply system that is used while powering the electric locomotive systems. Railway transportation systems for a comfortable future. What is an electric locomotive systems and their types in. Traction power electrification system investigation report washington metropolitan area transit authority. The seminar report explains the electric traction system which is the most efficient of all other traction systems. Pdf brushless dc motor design for electric traction. There is a wide variety of electric traction systems around the world and these have been built according to the type of railway, its location and the technology available at the time of the installation. Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered rails.
Compliance with the limits stipulated in specific standards and. The electric traction system ppt briefly discusses the types, supply system, traction motors, braking system, advantages and disadvantages and recent trends. The drive which uses the electric power for moving forward, such type of drive is called an electric traction drive. Electric traction ltd suppliers of ac traction solutions to.
Traction control is a technology designed to help your vehicle maintain traction, no matter how slippery the road surface. In deep and trustful partnerships with vehicle builders, refurbishers, and rail operators, we supply stateoftheart traction systems. Introduction the process of moving any vehicle is called traction. This site is like a library, use search box in the widget to get ebook that you want. Federal transit administration december 9, 2016 8 new insulators that can be removed for cleaning and then reinstalled. The system which use electrical power for traction system i. Non electric traction system mechanical traction system.
Electric traction download ebook pdf, epub, tuebl, mobi. Electric traction systems and their advantages electronics hub. Geared electric traction elevators gearless electric traction elevators governor roped hydraulic safeties sheaves traction 5 electric traction and mrl elevators thinking back to course 200, what are some things you remember about electric traction elevators. Electric traction system free download as powerpoint presentation. The permissible range of voltages allowed for the standardised voltages is as stated in standards bs en 50163 and iec 60850. We specialise in providing ac electric locomotives for main line and static use on the uk railway network. Ac traction motors, electrification systems, and railway signalling and control. Technically, it is a mechanical, hydraulic, or electric system that maintains or controls traction to any wheels driven by the engine. Techniques for electric drives, block diagram representation, transfer. This work presents a general filtering and unbalance compensation scheme for electric traction systems. Electric traction ltd suppliers of ac traction solutions. Electric railways use either electric locomotives hauling passengers or freight in separate cars or electric multiple.
One of the major application of an electric drive is to transport men and materials from one place to another. The proposed method uses an active filter controlled with the instantaneous active and. May 16, 2018 traction control is a technology designed to help your vehicle maintain traction, no matter how slippery the road surface. If the electric energy is use in this process is called electric traction. Zytek have developed a high power, compact, electric drive package comprising. It offers several benefits over other systems, including quick start and stop, very efficient, pollutionfree, easy to handle and easy speed control. This vehicle management unit interacts closely with the traction system and its components. Introduction of traction system in hindi, electrical. Pdf the objective of this paper is initially to present a basic modeling of the railway traction system. Pdf basic modeling for electric traction systems under. Multiple drive systems per vehicle can be supported due to the safety case and levels of torque integrity employed. Unless the traffic to be handled is heavy, electric traction becomes uneconomical.
Which of the following is the voltage for single phase a. 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. Please help improve this article by adding citations to reliable sources. By electric traction is meant locomotion in which the driving or tractive force is obtained from electric motors. Electric traction alternating current electric power. This article explains about electric traction systems and their. In mechanical terms, it is defined as the adhesive friction between the wheel and the surface on which it moves between a car tire and road. The marketwatch news department was not involved in the creation of this content. Harmonic filter for electric traction system request pdf. At each traction substation, normally two single phase transformers are installed, one which is in service and the other is 100% stand by.
Overall efficiency of steam locomotive system is close to a 5 to 10%b 25 to 30%c 55 to 60%d 75 to 80%. Traction system employed in locomotives can be electric or non electric. 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. On the other hand, the electrical systems used in highspeed networks are a source of disturbances, both for the railway system itself and for external power. Pdf threephase induction motors are widely used in electric traction systems. It is used in electric trains, tramcars, trolley buses and diesel electric vehicles etc.
This chapter presents a general description of the elements that characterize a railway electric transportation systems. Threephase induction motors are widely used in electric traction systems. Mitsubishi electric handles the interface design of the traction system. Ppt electric traction system powerpoint presentation. Techniques for electric drives, block diagram representation, transfer functions, transient response, frequency response and stability, compensating techniques. Jan 31, 2016 electric traction is part of subject utilization of electrical energy. Bldc motor is the permanent magnet synchronous motor designed to have a trapezoidal back emf. Its a very important topic for various recruitment exams like state electricity board exams etc. Now a day, magnetic traction is also used for bullet trains. Download electric traction systems seminar report with ppt. The same was true with manhattans former streetcar system.
System such a diesel electric drive, electric drive etc. 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. Traction is defined as the act of drawing or pulling especially by a motive force drawing of carriage by horse constitute traction. Friends is video me ham electric traction ke bare me discuss kar rhe hai. Pdf power quality analysis in electric traction system with three. First, the human body electrical circuit model is developed, and tolerable step and touch potentials derived from ieee standard 80 are defined. Railway electric traction describes the various types of locomotive and multiple units that are used on electrification systems around the world.
Pdf basic modeling for electric traction systems under uncertainty. Many installations seen today were first built more than 100 years ago, some when electric. All switching operations on the system are thus under the control of one single person, namely tpc, who is responsible for maintaining continuity. Oct 20, 2017 traction is defined as the act of drawing or pulling especially by a motive force drawing of carriage by horse constitute traction. Click download or read online button to get electric traction book now. Mitsubishi electric provides an integrated traction system that consists of traction motor, gear coupling and gear unit, based on the required performance and bogie interface. Electric traction ltd has its own fleet of 25kv ac electric locomotives available for either mainline use or as static train supply machines. What is an electric locomotive systems and their types in india. Brushless dc motor design for electric traction system md.
Optimising power management strategies for railway traction. Electric traction means use of the electricity for all the over machines. Operational and safety considerations for light rail dc. Nov 06, 2019 electric traction ltds unique specialisation in ac electric motive power has developed over 10 years of dedication to the maintenance and operation of ac traction. Power failure for few minutes can cause traffic dislocation for hours. The most vital factor against electric traction is the initial high cost of laying out overhead electric supply system. Sep 11, 2016 introduction the process of moving any vehicle is called traction. The electric traction system can be broadly divided into two groups. 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. 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. The tm4 neuro tm vmu is the vital nerve center responsible for the smooth operation of electric and hybrid vehicles.
Electric traction is part of subject utilization of electrical energy. A railway electrification system supplies electric power to railway trains and trams without an onboard prime mover or local fuel supply. Integrated traction system traction motor, gear coupling, gear unit pdf 3. It involves utilization of electric power for traction systems i. Traction system which do not involve the use of electricity such as steam engine drive, ic engine drive. Current situation and prospects of electric traction systems used in. Feb 28, 2017 electric traction means by means of the electric power for traction system i. May 22, 2018 download electric traction systems seminar report with ppt. Electric traction ltd is an established independent provider of ac traction solutions in the uk. The two most important issues to estimate given a certain power system configuratio n, when planning for an electric traction system, are the energy consumption of the grid and the train delays. Which of the following is an advantage of electric traction over other methods of traction. The railway system division, in its commitment to future progress, has consistently achieved technological breakthroughs on three systems that are shaping the future worldwide. The traction motor is suitable for a range of vehicle applications, from medium size passenger cars to light duty commercial vehicles. Electric traction has many advantages as compared to other non electrical systems of traction including steam traction.
Touch voltages that are commonly present around the rails, at station platforms, at traction power. 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. This article needs additional citations for verification. Abb is the expert for traction converters, motors, transformers, and complete traction chain solutions. In ohe, or overhead electrification systems, the supply of electricity is through an overhead system of suspended cables known as. Types of traction systems electric traction systems can be broadly divided into those using alternating current and those using direct current. Electric traction power the railway technical website. Electric traction and mrl transit elevatorescalator consortium 6. Impacts of the traction vehicle equipped by threephase induction. Countries having great natural resources in the form of water power were quick to appreciate the advantages of electric traction. Traction systems for locomotives and high speed applications. Electric traction is meant for locomotion in which the driving tractiveforce is obtained from electric motors called as traction motors. Jan 08, 2019 electric traction means using the electric power for traction system i.
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