Your locomotive print and wire run list will be reworked to incorporate nres nforce traction control system and would be provided to you as a pdf from the autocad print we produces. The control problem is divided into subloops such as. Unless the traffic to be handled is heavy, electric traction becomes uneconomical. The other is the control for the provision of traction and braking that drive the railway vehicles. Application of brakingtraction control systems to the scaled active steering testbed in the railway vehicle. Pdf application of brakingtraction control systems to. Braking traction system of railway vehicles has a crucial role for the safety as well as riding quality of passengers. When the traction motor tries to push forward the train, by increasing the driving torque, the driven wheel begin to rotate. Railway electrification provides traction energy to trains. Operational and safety considerations for light rail dc. By electrifying, automating, and digitalizing infrastructures, were already setting the benchmarks for future mobility. 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. Difference in slip may occur due to turning of a vehicle or varying road conditions for different wheels.
Control system of permanent magnet synchronous motor for. Application of brakingtraction control systems to the scaled. Axinom, digital platforms for the railway industry. Railway traction systems alternating current electric motor. International journal of vehicle mechanics and mobility. The traction system can be classified as nonelectric and electric traction systems.
In countries where 60 hz is the normal grid power frequency, 25 kv at 60 hz is used for the railway electrification. The permissible range of voltages allowed for the standardised voltages is as stated in standards bs en 50163 and iec 60850. In the united states, newer electrified portions of the northeast corridor i. In deep and trustful partnerships with vehicle builders, refurbishers, and rail operators, we supply stateoftheart traction systems. Substations to power new rapid transit network and increase energy efficiency. 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. The basic idea behind the need for a traction control system is the loss of road grip that compromises steering control and stability of vehicles because of the difference in traction of the drive wheels.
Application of brakingtraction control systems to the. In this paper, a robust control strategy of a railway traction system with induction motor is proposed. 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. Ac traction power supply rail electrification siemens. A topic seminar ontraction control systempresented by,vijay s4ps07me093p. Abb is the expert for traction converters, motors, transformers, and complete traction chain solutions. 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 control is a technology designed to help your vehicle maintain traction, no matter how slippery the road surface. Electric traction control the railway technical website prc rail. Train traction systems for passenger comfort and easier. Aws achslagerwerk stassfurt, axle boxes and components for the railway industry. Pdf active steering system of railway vehicles has proven its ability to bridge the gap between stability and curve friendliness. 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.
Axiomtek, secure, intelligent, embedded transportation system solutions and ethernet products. 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. The railway receives 3phase power supply from the supply authority. Therefore, it is necessary to improve the pq to guarantee the reliability. Ingeteam traction designs and supplies complete traction, control and auxiliary systems for trams, emus, locomotives and highspeed trains, based on. It offers several benefits over other systems, including quick start and stop, very efficient, pollutionfree, easy to handle and easy speed control. Srivastava control instrumentation division genesis of the project indian railways have a large variety of ac locomotives in their fleet. Traction control is a car safety feature that prevents wheels from spinning on lowgrip surfaces. In this paper, we discuss the current control system mentioned above and suggest a method which is available under the condition of railway vehicle traction. Toshiba s railway energy management system provides customers with a total solution matching your business philosophy and energy consumption target. The inverter for this system is a standard inverter for which the east.
Dc simpler, especially for railway traction easy control easier to maintain expensive for long run sparking and corrosion unsuitable for regenerative braking. The system which use electrical power for traction system i. A comprehensive model for adhesion control system of wheel and. Purchasing division state of west virginia solicitation. Electric traction control the railway technical website. This traction power can be diesel, steam or electric power.
Developed computer simulation of the traction ac drive is based on the module principle and represents the set of individual caspoc models, which interact with. Hitachi also developed and installed integrated safety equipment that is able to adapt fl exibly to the safety functions expected to be used for. Power electronics technologies for railway traction systems. Traction manual containing procedures and practices to be followed uniformly throughout indian railways, was.
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. Traction control system for sbvr 102 gp38 locomotive. It is still to notice that, regarding the classical systems used for railway vehicles, there are also several major challenges that may affect the braking capacity. Electric traction 1701 however, the steam locomotive suffers from the following disadvantages. Its core technology for successful development of the brake traction system is to design of ecu electric control unit containing antiskid control, brake blending control, load compensating control, adhesion control, and so on. Download electric traction systems seminar report with ppt. Pdf application of brakingtraction control systems to the scaled. Brakingtraction system of railway vehicles has a crucial role for the safety as well as riding quality of passengers. 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. Railway works under the indian railway which is a stateowned organization of the ministry of railway. Pdf antislip traction control of railway vehicle based. As one of the worlds leading suppliers of electrotechnical systems, siemens is the right partner for your ac traction power supply in main. The paper, which focuses on the global control, proposes an emergency self traction system with the purpose of wisely utilizing the power reserved in energy saving system for rational emergency.
It can also be defined as the railway vehicle that provides the necessary traction power to move the train is referred as the traction or locomotive. As the need for mobility increases, more efficient transport concepts are needed. There are a number of different systems of electric traction and these are described here. Traction systems for locomotives and high speed applications. Schematic of 25kv traction control system with the 25kv fed into a transformer.
Ac efficient and cheaper for long distances less or no maintenance reliable higher level of adhesion complicated control trends in traction system existing traction systems use dc. The various systems usually make use of the same types of sensor. In this paper, a new traction power supply system adopting singlephase traction transformer and active power flow controller pfc is proposed. 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. The seminar report and electric traction system ppt briefly discusses the requirements, types, supply system, traction motors, railway electric locomotives, braking system, advantages and disadvantages and recent trends. Aug 09, 2011 a topic seminar ontraction control systempresented by,vijay s4ps07me093p. Information system railway systems toshiba infrastructure. Smooth coordination between advanced information communication technologies ict and technologies unique to railways. May 22, 2018 download electric traction systems seminar report with ppt. To appreciate the complexity of the drive for using 3 phase squirrel cage induction motor for traction application, let us start with speed torque characteristic of a. A traction control system tcs, also known as asr from german. The most vital factor against electric traction is the initial high cost of laying out overhead electric supply system. Its raining as you drive on a darkened highway late at night, but you never worry about safety your car has.
Pdf power quality issues in railway traction system. Avara technologies, data and telecommunications solutions for railway communications. Simplified and advanced modelling of traction control systems of. Railway is a largest means of transportation in india and it is ranked in the world as fourth largest railway network. Mandya slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Nov 18, 2015 traction control is a car safety feature that prevents wheels from spinning on lowgrip surfaces. Abb transformers service to refurbish a fleets traction transformers for one of the worlds most punctual airport rail links. 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. Moreover, the neutral section insulators at exits of substations affect the safety and efficiency of the electric trains, especially in high speed railway and heavy haul railway. Power failure for few minutes can cause traffic dislocation for hours.
Hitachi also developed and installed integrated safety equipment that is able to adapt fl. Its core technology for successful development of the braketraction system is to design of ecu electric control unit containing antiskid control, brake blending control, load compensating control, adhesion control, and so on. 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. This chapter presents a general description of the elements that characterize a railway electric transportation systems. Control for railway vehicles can be broadly partitioned into two categorises. Railway traction systems alternating current electric.
Gtos and microprocessor based control system in the last few years. The basic aim is to give a detailed description of how the most generally used traction and engine systems work in presentday railways. One is concerned with the control of vehicle dynamics which deal with issues such as vehicle stability, vehicle running behaviour and passenger ride comfort. Abb traction system turns swiss trains into energysaving alpine icebreakers.
Since the application of the induction motor fed by three phase inverter to the electric railway vehicle, the vector control system which drives parallelconnected. Microprocessorbased traction control system for 25 kv ac locomotives y. This paper describes the design of the braking traction control systems as a part of a 15 scaled railway vehicle for active steering testbed which is to alleviate wheel rail contact forces and to. Modeling, simulation and readhesion control of an induction motorbased railway electric traction system. The toshiba railway information systems which support train traffic safety from the ground side have achieved remarkable progress by realizing smooth coordination with the technologies unique to railways that were formerly a bottleneck for information control.
Technically, it is a mechanical, hydraulic, or electric system that maintains or controls traction to any wheels driven by the engine. Simulation of the traction induction drive the considered traction ac drive consists of the traction induction motor with squirrelcage rotor, threephase power inverter and control system. Robust control of railway traction system sciencedirect. Antislip traction control of railway vehicle based on estimated wheelrail contact condition. Microprocessorbased traction control system for 25 kv ac. As a part of this study, it is required to establish a current control system of pmsm suitable for railway vehicle traction. During each shift there is one more number of traction power. Pdf applications of power electronics in railway systems. The paper, which focuses on the global control, proposes an emergency selftraction system with the purpose of wisely utilizing the power reserved in energy saving system for rational emergency.
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