Traction power electrification system investigation wmata. Nov 07, 2008 electric traction systems overview of signalling and train control systems abstract. In ohe, or overhead electrification systems, the supply of electricity is through an overhead system of suspended cables known as. Evaluation of 2005 honda accord hybrid electric drive system. It can be divided into pantograph and overhead contact line systems, pantograph and overhead contact rail systems, and. The book covers the fundamentals of electric machine transformers, drive systems, electric traction and renewable energy in an emobility chapter. Department of energy doe and american auto manufacturers. In recent decades, worldwide global warming and reduction in petroleum resources have accelerated researchers attention to produce alternative sustainable and environmentally clean transportation systems. For better understanding of the calculation of the electric drive train let us assume a system in which a brushless dc motor is use which has maximum speed of 4500 rpm, torque of 38 nm and power of 4. The objective of this paper is initially to present a basic modeling of the railway. Savio dipartimento di ingegneria elettrica, universitd di genova, via allvpera pia, 11 a 16145 genova, italy abstract simulation tools are of notable help in the design of electrified transport systems, as they make it possible to analyze the overall. Traction control is a widely used control system to increase stability and safety of four wheel vehicles. Electric traction means by means of the electric power for traction system i. The drive which uses the electric power for moving forward, such type of drive is called an electric traction drive.
This paper considers the events that brought about the signalling systems of today, the primary functions and technology of the signalling and the underlying design principles. The california highspeed rail chsr line will be an electrified line with traction power for electric vehicles being supplied and distributed using a 2x25kv autotransformer feed type power supply system and an overhead contact system. It looks at the operation of the railway as a system and in particular at the role of train control systems. Abstract electric motor and power electronics based inverter are the major components in industrial and automotive electric drives. In this paper, two novel traction control techniques of an electric. If electric supply is used for driving a locomotive, the system is known as electric traction. Brushless dc motor design for electric traction system. Electric traction systems seminar report a traction system causes the propulsion of vehicle in which tractive or driving force is obtained from various devices such as diesel engine drives. Traction control method of hybrid electric vehicle based. Speed time, distance time and simplified speedtime curves, attractive effort for acceleration and propulsion, effective weight, train resistance, adhesive weight, specific energy output and. Traction control of an electric formula student racing car.
The book covers the following topics three phase circuits and power magnetics transformers concept of electrical machiners dc motors three phase windings induction machines. Electric traction systems overview of signalling and train. It is critical that such voltage shall not be put in circuiting contact with any person at any point workshop, crash or postcrash rescue. Traction power 2x25kv autotransformer electrification system, r2. Configurations and control of traction motors for electric vehicles. Evaluation of the 2007 toyota camry hybrid synergy drive system. May 22, 2018 the electric traction system ppt briefly discusses the types, supply system, traction motors, braking system, advantages and disadvantages and recent trends.
A traction system that doesnt use electrical energy for the movement of vehicle at any stage is referred as nonelectric traction system. Evaluation of the 2007 toyota camry hybrid synergy drive. An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or onboard energy storage such as a battery or a supercapacitor electric locomotives with onboard fueled prime movers, such as diesel engines or gas turbines, are classed as diesel electric or gas turbine electric and not as electric locomotives, because the electric generatormotor combination. California highspeed train project traction electrification system rqmts.
This paper considers the events that brought about the signalling systems of today, the primary functions and technology of the signalling and the. In many race applications the accelerator pedal is difficult to control for an inexperienced driver. Threephase induction motors are widely used in electric traction systems. 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. In this paper we present a model based fault diagnostics system developed using machine learning technology for detecting and locating multiple classes of faults in an electric drive.
However, most electric vehicles developed to date have not yet utilized it. Act of drawing or state of being drawn propulsion of vehicle is called tractions. The aim of this paper is to provide a system for the speed control of a brushless dc motor bldc fed inverter with the electric vehicle. Modelbased fault diagnosis in electric drives using. The track electrification refers to the type of source supply system that is used while powering the electric locomotive systems. An approach to designing subway traction power supply facilities with an 825v traction power system is considered in a general digital model. The main focus of epsr is the electric power system from a systems point of view. There are various systems of traction prevailing in our country such as steam engine drive, electric drive. Electric traction systems overview of signalling and train control. The fuzzy logic technique is used to estimate the speed of the bldc motor under variable and fixed condition of the backemf. 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.
The most vital factor against electric traction is the initial high cost of laying out overhead electric supply system. Abstract this article describes the design of a traction control system in an electric formula student vehicle. Feb 28, 2017 electric traction means by means of the electric power for traction system i. This includes the role of automatic train protection atp in a modern metro environment, the. 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 traction motors are used in electrically powered rail vehicles electric multiple units and other electric vehicles including electric milk floats, elevators, roller coasters, conveyors, and trolleybuses, as well as vehicles with. There are several different electrification systems in use throughout the world. Jan 08, 2019 electric traction means using the electric power for traction system i. The calcutta trams use 550v dc with an overhead line catenary. Jun 18, 20 typical voltages used for electric traction are 1. Influence of ac electric traction on harmonic distortion in 110 kv supply voltage network. By electric traction is meant locomotion in which the driving or tractive force is obtained from electric motors. Pdf power quality analysis in electric traction system with three. Brushless dc motor design for electric traction system md.
Automatic stability control is used in the bmw k1200r motorcycle and in motogp competition. It can be divided into pantograph and overhead contact line systems, pantograph and overhead contact rail systems, and collector shoe and contact rail systems. System of electric traction mechanics of train movement. Traction control is a technology designed to help your vehicle maintain traction, no matter how slippery the road surface. The continuously increasing passenger traffic in metropolitan cities makes it necessary to build new subway lines and upgrade existing ones, taking into account the compliance with all the standards of ensuring uninterrupted power supply at minimal. Pdf threephase induction motors are widely used in electric traction systems. Electricity means that a battery sometimes assisted by ultracaps is used to store the energy, and that an electromotor from now on called motor will be used as traction motor. The evidence of this mode of running can still be seen on the track down the slope on the. Please find the full notes on electrical machines and drives. The same was true with manhattans former streetcar system.
Electric traction docsanjeet8143 linkedin slideshare. Because the battery packs have a nominal voltage of 461 vdc, the traction battery system implements two dcdc buck. Now a day, magnetic traction is also used for bullet trains. Electrification of vehicular technology is capable of curbing the environmental pollution problem in an efficient and effective way, due to high efficiency electric. Electric traction system engineering seminar topics.
Configurations and control of traction motors for electric. Electric traction mcqs answers pdf electrical engineering multiple choice questions answers. Electric traction means use of the electricity for all the over machines. A conductor installed for the purpose of providing electrical continuity between. Ppt electric traction system powerpoint presentation. Electric traction mcqs answers pdf electrical engineering. Power quality analysis in electric traction system with threephase. Unless the traffic to be handled is heavy, electric traction becomes uneconomical. The traction battery consists of two battery packs a and b. The continuously increasing passenger traffic in metropolitan cities makes it necessary to build new subway lines and upgrade existing ones, taking into account the compliance with all the standards of ensuring. Evehicle safety pyro switch as high voltage circuit. Electric stock digital twin in a subway traction power system. Taking an isg hybrid electric vehicle as the research object as shown in figure1, the traction control method of an isg hybrid electric vehicle is researched in this paper.
Influence of ac electric traction on harmonic distortion. Ev uot electric march yoichi hori, member, ieee, yasushi toyoda, and yoshimasa tsuruoka abstract the most distinct advantage of the electric vehicle is its quick and precise torque generation. Power failure for few minutes can cause traffic dislocation for hours. Pdf basic modeling for electric traction systems under uncertainty. The calcutta metro uses 750v dc traction with a thirdrailmechanism for delivering the electricity to the emus electricmultiple units. Electric traction has many advantages as compared to other non electrical systems of traction including steam traction. Electric traction system 1 electric traction system presented by amit raj roll no. Federal transit administration december 9, 2016 8 new insulators that can be removed for cleaning and then reinstalled. Electric power systems research is an international medium for the publication of original papers concerned with the generation, transmission, distribution, and utilization of electrical energy.
Investigation results for standard operation conditions are presented. Automatic stability control is used in the bmw k1200r motorcycle and in. Abstractthreephase induction motors are widely used in. An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or onboard energy storage such as a battery or a supercapacitor electric locomotives with onboard fueled prime movers, such as diesel engines or gas turbines, are classed as dieselelectric or gas turbineelectric and not as electric locomotives, because the electric generatormotor. Types of traction systems electrictraction systems can be broadly divided into those using alternating current and those using direct current. Basic modeling for electric traction systems under uncertainty.
Nov 22, 2015 for traction mostly 3 phase induction motor and dc motor is used,both have high initial torque,prerequisite for high speed acceleration. The electric traction system ppt briefly discusses the types, supply system, traction motors, braking system, advantages and disadvantages and recent trends. Railway traction system research india publications. The high speed alternator, rectifier, flywheel, motorgenerator, and power converter components are currently being developed by utcem under the alps program 1. The electric traction system 25 kv, 50 hz and the traction vehicle with 3f induction motors were. Calcutta had an overhead 3kv dc system until the 60s. May 16, 2018 traction control is a technology designed to help your vehicle maintain traction, no matter how slippery the road surface.
In the present state of electrical science and practice, electric traction must be considered as a branch of the electrical transmission of energy. Alps power flow diagram operation of the alps prime power module is analogous to the traction drive system in a conventional diesel electric. The system which use electrical power for traction system i. Abstract in this seminar report we have discussed about electric. Rail transport, traction system, electricity, train resistance, power conversion, acceleration, braking. Electric traction means using the electric power for traction system i. The current collection system is an electric energy exchange interface between electric trains and traction substations. Department of energy doe and american automotive manufacturers general motors, ford, and daimlerchrysler began a fiveyear, costshared. One of the major application of an electric drive is to transport men and materials from one place to another. The paper describes the application of supercapacitor energy storage system for induction traction drive test bench that replaces a real electric public transport for performing testing and researches.
Act of drawing or being drawn is known as traction. This includes the role of automatic train protection atp in a. Influence of ac electric traction on harmonic distortion in. Ppt electric traction system powerpoint presentation free. Nov 25, 2019 an approach to designing subway traction power supply facilities with an 825v traction power system is considered in a general digital model. Department of energy doe and american automotive manufacturers general motors, ford, and daimlerchrysler began a five. Simulation of induction traction drive with supercapacitor. A traction system that doesnt use electrical energy for the movement of vehicle at any stage is referred as non electric traction system. It is used in electric trains, tramcars, trolley buses and diesel electric vehicles etc.
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 traction motors are used in electrically powered rail vehicles electric multiple units and other electric vehicles including electric milk floats, elevators, roller coasters, conveyors, and trolleybuses, as well as vehicles. Which of the following is an advantage of electric traction over other methods of traction. This paper deals with reverse effects of ac electric traction operation on 110kv supply system, from the point of view of spreading of harmonics. Technically, it is a mechanical, hydraulic, or electric system that maintains or controls traction to any wheels driven by the engine. This chapter presents a general description of the elements that characterize a railway electric transportation systems. Hybrid electrical vehicles introduction a hybrid electric vehicle hev has two types of energy storage units, electricity and fuel. Traction power electrification system investigation report washington metropolitan area transit authority. With direct current, the most popular line voltages for overhead wire supply systems have been. Drive technology and motion control explores the principles and practices of power electronics, emphasizing drive technology and motion control.
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