This paper presents a comprehensive simulation model of a dc traction system with vector control drive. Traction control is a driving safety feature that is used for virtually every vehicle available in the new car market. With more than 200 rail professionals specializing in vehicles, traction power, train control, infrastructure and operations, ltk brings unparalleled technical expertise to the simulation of rail networks. Traction control system do not let this special safety feature tempt you into taking risks the traction control system tc is a when driving. The system which use electrical power for traction system i. These sensors measure differences in rotational speed to determine if the wheels that are receiving power have lost traction. Since the application of the induction motor fed by three phase inverter to the electric railway vehicle, the vector control system which drives parallelconnected. And fundamentally dc motors are used for electric traction system what is electric traction, what is electric traction motor, what is electric traction control, what is meant by electric traction. Introduction classification electric traction railway traction third rail system overhead system traction is defined as. The basic aim is to give a detailed description of how the most generally used traction and engine systems work in presentday railways. Federal transit administration december 9, 2016 8 new insulators that can be removed for cleaning and then reinstalled.
Rail vehicle control system integration testing using. Pdf application of brakingtraction control systems to the scaled. Schematic of 25kv traction control system with the 25kv fed into a transformer. Microprocessorbased traction control system for 25 kv ac locomotives y. If the brakes feel normal, drive slowly and have your vehicle repaired by your. Advantages and disadvantages of traction control system. Traction control system tcs electronic brake control.
However, the introduction of network into the traction motor driving system also brings many uncertain factors, such as networked time delay, loss and disorder of data packages, etc. The speed control system of this traction motor is fieldoriented control. The tes for a typical modern light rail or street car system includes an overhead contact system ocs, traction power substations and feeder cables, together with associat ed substation protective devices, and may include supervisory control and data acquisition. Traction control system driving and operating ride control systems the hill start assist is not active during 9 warning an autostop. The system should be capable of working without speed or position sensors. In modern vehicles, traction control systems utilize the same wheelspeed sensors employed by the antilock braking system. Matlab and simulink enable grid simulation and analysis to replicate and analyze energy transfers in different operation conditions depending on the characteristics of your voltage, current, or contact electrification system. Pdf adhesion control of heavyduty locomotive based on. Antilock braking system abs abs training 2 antilock braking system abs purpose antilock brake systems abs generally also referred to as antilock systems als are designed to prevent the vehicle wheels from locking as a result of the service brake being applied with too much force, especially on slippery road surfaces. This page contains all the latest information, news, videos, images and articles on all aspects of train traction and control. It can hold, release and then reapply braking pressure until the wheel regains traction.
Mandya slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The traction inverters monitor the wheel speeds, primarily looking for high accelerations, and reduce the motor torque accordingly. It uses of all the traction available on the road when accelerating on lowfriction or slippery surfaces like ice, snow, or loose gravel. 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. Pdf active steering system of railway vehicles has proven its ability to bridge the gap between stability and curve friendliness. Traction power electrification system investigation wmata. Over acceleration at critical points in the race can lead to wheels spinning which can result in an increased race time or a vehicle spinout. The earliest version of traction control was the emd idac system for instantaneous detection and control which detected wheelslip by the change in resistance due to the increase in speed the electrical resistance of a series wound traction motor is inversely proportional to its speed resistance goes down as speed goes up. Technically, it is a mechanical, hydraulic, or electric system that maintains or controls traction to any wheels driven by the engine.
As a result, control is maintained and the vehicle can be safely steered around the obstacle. Jan 27, 2012 a traction control system adds another solenoid valve in the antilocking braking system modulator. Modeling and simulation of railway electric traction with. Siemens mobility supports beijing metros mass transit line as the first fully automated propulsion system mass transit project in beijing bolstering up chinas propulsion system market with cuttingedge digitalization and innovation expertise. It features an uprated 998 inline four short stroke engine from last years f4 rr and an 8level traction control system, a fly by wire throttle plus 4 engine maps that can each be set to normal, sport or rain but lacks the ohlins suspension of its more illustrious siblings. Substations to power new rapid transit network and increase energy efficiency. Its raining as you drive on a darkened highway late at night, but you never worry about safety your car has. A feature of the tcs system functions similar to a limitedslip differential and controls the wheel spin across a driven axle. Energy saving technologies in the railway vehicle traction field can be mainly.
The permissible range of voltages allowed for the standardised voltages is as stated in standards bs en 50163 and iec 60850. Their is a chance of traction control system getting damaged frequently and it require. Traction systems for light rail vehicles and metros abb. System such a diesel electric drive, electric drive etc. Traction motor control with inverters used on railways. Application of brakingtraction control systems to the scaled active steering testbed in the railway vehicle. A free powerpoint ppt presentation displayed as a flash slide show on id. Real world crash evaluation of vehicle stability control vsc. Information and translations of traction control system in the most comprehensive dictionary definitions resource on the web. Traction control tcs is a stability control feature closely associated with abs. What is a traction control system and how does it work.
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. A traction system was developed to reduce maintenance work by replacing mechanical contacts with electronic contacts and to collectively control the information required for train control in cooperation with the information control system. Traction control system tcs works in the background to prevent your wheels from overspinning on slippery surfaces. Tractioncontrol system article about tractioncontrol. Adhesion control of heavyduty locomotive based on axle traction control system article pdf available in ieee access pp99. The railway system division, in its commitment to future progress, has consistently achieved technological breakthroughs on three systems that are shaping the future worldwide. Antilock braking system abs and antislip regulation asr. Microprocessorbased traction control system for 25 kv ac. 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. Traction control system mechanical and automobile ieee project topics, thermal engineering base paper ideas, synopsis, abstract, report, figures, full pdf, working details for mechanical engineering me, diploma, btech, be, mtech and msc college students. The chapters dealing with the traction control and. This article presents a new traction control system under complicated situations, including the low. This system will compensate for any over acceleration that may occur during start up or around corners. Traction control system definition of traction control.
Under complicated situations, such as the low slippery road surface and splitroad surface, traction control system is the key issue to improve the performance of vehicle acceleration and stability. Abb is the expert for traction converters, motors, transformers, and complete traction chain solutions. Abb traction system turns swiss trains into energysaving alpine icebreakers. Railway traction systems alternating current electric motor. Ppt electric traction system powerpoint presentation. A comprehensive model for adhesion control system of wheel and. Track design handbook for light rail transit, second edition 114 11. Operational and safety considerations for light rail dc. Train traction systems for passenger comfort and easier.
The traction control system works by slowing only the slipping tire, thus helping it regain traction on the road surface. Determination of adhesion coefficients to input into traction control systems is a complex and difficult issue. Traction control is a widely used control system to increase stability and safety of four wheel vehicles. The control problem is divided into subloops such as.
Traction control system 1993 saab 9000 1993 brakes saab traction control 9000 series description saab traction control system tcs operates in tandem with appropriate antilock braking abs system. Definition of traction control system in the dictionary. Tecu is tmvs complete electronic control package for your locomotive. Saab 9000 series vehicles are equipped with mark iv abs. Efficiently and quickly managing hundreds of analog and digital input and output signals, tecu is nimble yet robust in meeting the rigors associated with rail applications. It allows brake actuation pressure to be generated to brake a driven wheel to prevent it spinning when peak adhesion has been lost during acceleration, and thus maintain traction by transferring the drive torque to another drive wheel that does have full adhesion. Abbs traction systems for metro and light rail vehicles support the construction of clean, safe railway networks in cities. Simplified and advanced modelling of traction control.
Optimising this task requires solving the problem of how to estimate rail friction condition. Traction control system synonyms, traction control system pronunciation, traction control system translation, english dictionary definition of traction control system. The various systems usually make use of the same types of sensor. Locomotive traction and rail wear control ye tian beng electrical engineering and automation tianjin university, china msc control systems imperial college london, uk a thesis submitted for the degree of doctor of philosophy at the university of queensland in 2015 school of. Traction systems for locomotives and high speed applications. Railway transportation systems for a comfortable future. Average rating from 11,252 customers who received a brake pads replacement. Introduction of traction system in hindi, electrical traction and nonelectric traction system. Traction control is a system that limits the amount of wheel spin or slip of a driven wheel. Srivastava control instrumentation division genesis of the project indian railways have a large variety of ac locomotives in their fleet. Nov 18, 2015 traction control is a car safety feature that prevents wheels from spinning on lowgrip surfaces. The train control system is analogous to the sensory organs and central nervous system of the human body. Pdf antislip traction control of railway vehicle based. A study of coordinated vehicle traction control system.
Antislip traction control of railway vehicle based on estimated wheel rail contact condition. These are independent of the contact system used, so that, for example, 750v dc may be used with either third rail or overhead lines the latter normally by trams. Under normal running, the signal is exactly reproduced firing the fuel injectors as normal. Pdf in railway traction system adhesion is an important factor to accelerate the vehicles quickly. Power electronics technologies for railway traction systems. The main objective of this project is to design a slippage detection and traction control system. The track electrification refers to the type of source supply system that is used while powering the electric locomotive systems. In countries where 60 hz is the normal grid power frequency, 25 kv at 60 hz is used for the railway electrification. It senses and processes information, makes decisions, and transmits commands. An advanced traction control system can help limit wheel rotation and enhance vehicle stability. While the dynamic behaviour of previous generations of vehicles was to a large extent determined by its power components alone, an important part of the dynamics of modern vehicles is shaped by. Trainops is a software product developed by the rail systems and software professionals of ltk engineering services, an employeeowned company. In the united states, newer electrified portions of the northeast corridor i.
Simplified and advanced modelling of traction control systems of heavyhaul locomotives article in vehicle system dynamics 535. Pdf power quality issues in railway traction system. Modelling of rail traction and power distribution systems. Dtcdynamic traction control is a part of dynamic stability. The gears here are high functioning which are involved in the traction control.
As announced on page 2, this fundamental information booklet deals with the basic structure of the various traction control and assist systems, which influence the vehicle dynamics via the brake system or engine intervention. It usually includes both powered and unpowered vehicles. If one wheel on a driven axle is spinning faster than the other, the system will apply the brake of the spinning wheel. Electric traction control the railway technical website. In this paper, a robust control strategy of a railway traction system with induction motor is proposed. Introduction of traction system in hindi, electrical. May 24, 2016 traction control system presentation slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The traction control system was therefore introduced to maintain wheel traction and avoid tire slip, allowing for a safer driving experience on snowy, wet roads and while making turns. The model of two substation rectifiers in one track section with the conventional twolevel traction drive has been proposed which is according to the. The nissan traction control system or tcs is a system designed to help prevent wheelspin. When wheelspin is detected the system automatically reduces throttle or applies the brakes in order to resto. What are the components of the traction control system.
Railway electrification provides traction energy to trains. This will allow more engine torque to be applied to the wheel that is not spinning. Control systems for convertercontrolled rail vehicles are orders of magnitude more complex than controllers for previous generations of vehicles. As your ideal partner, abb provides complete highefficient and reliable solutions to power a wide application range for any light rail vehicle and related vehicle concepts e. Efficient train traction system that reduces maintenance work. This lets the traction control system slow the wheel that is spinning. Tecu traction engine control unit tmv control systems. If you continue browsing the site, you agree to the use of cookies on this website. Also as in the human body, the execution of commands is not a function of the train control system but of other parts specialized for that purpose. 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. In this paper, a novel control strategy with engine controller and active pressure controller is. Aug 09, 2011 a topic seminar ontraction control systempresented by,vijay s4ps07me093p. Modeling of highspeed traction motors control system. Locomotive manufacturers introduce traction control system strategies for achieving optimal adhesion allowing for axle weight transfers.
Jul 06, 2014 traction control system tcs reduces torque to the driven wheels to minimise slip. A secondary winding is taken off for the ac to dc converter, which produces a dc output to pass to the motor converter, which then provides the controlled three phases to the traction motors. Traction control system tcs is a vehicle safety feature. The firm shall have prior experience of supplying igbt based traction system for 4000hp. This study quantifies the effect of vehicle stability control vsc in reducing crash involvement rates for a subset of vehicles in the us fleet. Read track design handbook for light rail transit, second. Traction power electrification system investigation report washington metropolitan area transit authority.
Chances are that if you own a car, it has traction control and youve benefitted from it, possibly without realising how it actually helps. Trainops operations, traction power, train control. Rolling stock originally referred to the vehicles that move on a railway. Crash rates for a variety of impact types before and after vsc technology was implemented are compared. Until the late 20th century it was universally employed in traction system. Automatic stability control is used in the bmw k1200r motorcycle and in motogp competition. It stops the wheels from spinning without any grip. Sufficient experience in manufacture and integration of igbt based traction control system for 40004500hp dieselelectric locomotive is required due to specific and complex. A traction control system tcs, also known as asr from german. You will also find a list train traction and control suppliers from around the world. In addition, it interacts with the powertrain control module, reducing engine torque. The traction control system has only limited usage because with the offroad usage it cant survive. Modeling and simulation of railway electric traction with vector control drive abstract.
This lets the car slip a little before it cuts and saves you from looking like in idiot. This is also useful for unplowed roads where you need a bit more traction to get going. Railway works under the indian railway which is a stateowned organization of the ministry of railway. Robust control of railway traction system sciencedirect. The main function of the traction control system is to prevent a condition known as oversteer, which. In deep and trustful partnerships with vehicle builders, refurbishers, and rail operators, we supply stateoftheart traction systems. Traction control is a technology designed to help your vehicle maintain traction, no matter how slippery the road surface. A traction motor is an electric motor used for propulsion of a vehicle, such as locomotives or electric roadway vehicle. The braking system, traction control system if the abs indicator and the brake system indicator come on together, and the parking brake is fully released, the fronttorear braking distribution system may also shut down. Welcome to our products and services section for traction and control.
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