Electric traction 1701 however, the steam locomotive suffers from the following disadvantages. By electrifying, automating, and digitalizing infrastructures, were already setting the benchmarks for future mobility. Download electric traction systems seminar report with ppt. Hitachi also developed and installed integrated safety equipment that is able to adapt fl. 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.
Traction manual containing procedures and practices to be followed uniformly throughout indian railways, was. Simplified and advanced modelling of traction control systems of. Purchasing division state of west virginia solicitation. Modelling and simulation of new traction power supply. The control problem is divided into subloops such as. Axiomtek, secure, intelligent, embedded transportation system solutions and ethernet products. 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. Therefore, it is necessary to improve the pq to guarantee the reliability. Dc simpler, especially for railway traction easy control easier to maintain expensive for long run sparking and corrosion unsuitable for regenerative braking. The most vital factor against electric traction is the initial high cost of laying out overhead electric supply system. International journal of vehicle mechanics and mobility. 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.
Pdf application of brakingtraction control systems to the scaled. 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. Microprocessorbased traction control system for 25 kv ac. Railway works under the indian railway which is a stateowned organization of the ministry of railway. Axinom, digital platforms for the railway industry. Modeling, simulation and readhesion control of an induction motorbased railway electric traction system. Avara technologies, data and telecommunications solutions for railway communications.
This traction power can be diesel, steam or electric power. As the need for mobility increases, more efficient transport concepts are needed. Srivastava control instrumentation division genesis of the project indian railways have a large variety of ac locomotives in their fleet. Toshiba s railway energy management system provides customers with a total solution matching your business philosophy and energy consumption target. Difference in slip may occur due to turning of a vehicle or varying road conditions for different wheels. Antislip traction control of railway vehicle based on estimated wheelrail contact condition. The inverter for this system is a standard inverter for which the east. Ac traction power supply rail electrification siemens. 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.
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. In this paper, a new traction power supply system adopting singlephase traction transformer and active power flow controller pfc is proposed. It offers several benefits over other systems, including quick start and stop, very efficient, pollutionfree, easy to handle and easy speed control. Gtos and microprocessor based control system in the last few years.
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. There are a number of different systems of electric traction and these are described here. Abb is the expert for traction converters, motors, transformers, and complete traction chain solutions. Pdf power quality issues in railway traction system. In the united states, newer electrified portions of the northeast corridor i. In countries where 60 hz is the normal grid power frequency, 25 kv at 60 hz is used for the railway electrification. Schematic of 25kv traction control system with the 25kv fed into a transformer. 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. Application of brakingtraction control systems to the. 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. A comprehensive model for adhesion control system of wheel and.
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. 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. In deep and trustful partnerships with vehicle builders, refurbishers, and rail operators, we supply stateoftheart traction systems. 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. Railway electrification provides traction energy to trains. Control system of permanent magnet synchronous motor for. Its raining as you drive on a darkened highway late at night, but you never worry about safety your car has. Robust control of railway traction system sciencedirect. 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. As one of the worlds leading suppliers of electrotechnical systems, siemens is the right partner for your ac traction power supply in main. 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. Smooth coordination between advanced information communication technologies ict and technologies unique to railways. Therefore, it was generalized and remains even nowadays the basic and compulsory system for rail vehicles. Traction control is a car safety feature that prevents wheels from spinning on lowgrip surfaces.
Average rating from 11,252 customers who received a brake pads replacement. Ingeteam traction designs and supplies complete traction, control and auxiliary systems for trams, emus, locomotives and highspeed trains, based on. Railway traction systems alternating current electric motor. Train traction systems for passenger comfort and easier.
The traction system can be classified as nonelectric and electric traction systems. Hitachi also developed and installed integrated safety equipment that is able to adapt fl exibly to the safety functions expected to be used for. Braking traction system of railway vehicles has a crucial role for the safety as well as riding quality of passengers. Since the application of the induction motor fed by three phase inverter to the electric railway vehicle, the vector control system which drives parallelconnected. Unless the traffic to be handled is heavy, electric traction becomes uneconomical. Railway traction systems alternating current electric. The various systems usually make use of the same types of sensor. Pdf application of brakingtraction control systems to.
Traction systems for locomotives and high speed applications. A topic seminar ontraction control systempresented by,vijay s4ps07me093p. The other is the control for the provision of traction and braking that drive the railway vehicles. During each shift there is one more number of traction power.
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. Substations to power new rapid transit network and increase energy efficiency. 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. 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. 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. Control for railway vehicles can be broadly partitioned into two categorises. Traction control system for sbvr 102 gp38 locomotive. Microprocessorbased traction control system for 25 kv ac locomotives y. Abb traction system turns swiss trains into energysaving alpine icebreakers. Efficient train traction system that reduces maintenance work. The permissible range of voltages allowed for the standardised voltages is as stated in standards bs en 50163 and iec 60850.
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. The system which use electrical power for traction system i. A traction control system tcs, also known as asr from german. Power failure for few minutes can cause traffic dislocation for hours. May 22, 2018 download electric traction systems seminar report with ppt.
This chapter presents a general description of the elements that characterize a railway electric transportation systems. Power electronics technologies for railway traction systems. 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. Technically, it is a mechanical, hydraulic, or electric system that maintains or controls traction to any wheels driven by the engine. Pdf applications of power electronics in railway systems.
One is concerned with the control of vehicle dynamics which deal with issues such as vehicle stability, vehicle running behaviour and passenger ride comfort. 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. Aug 09, 2011 a topic seminar ontraction control systempresented by,vijay s4ps07me093p. Operational and safety considerations for light rail dc. 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. Railway transportation systems for a comfortable future. Electric traction control the railway technical website.
The basic aim is to give a detailed description of how the most generally used traction and engine systems work in presentday railways. Application of brakingtraction control systems to the scaled active steering testbed in the railway vehicle. Pdf antislip traction control of railway vehicle based. The railway system division, in its commitment to future progress, has consistently achieved technological breakthroughs on three systems that are shaping the future worldwide. Traction control is a technology designed to help your vehicle maintain traction, no matter how slippery the road surface. Nov 18, 2015 traction control is a car safety feature that prevents wheels from spinning on lowgrip surfaces. 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. Mandya slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Railway is a largest means of transportation in india and it is ranked in the world as fourth largest railway network. Pdf active steering system of railway vehicles has proven its ability to bridge the gap between stability and curve friendliness.
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. In this paper, a robust control strategy of a railway traction system with induction motor is proposed. The track electrification refers to the type of source supply system that is used while powering the electric locomotive systems. 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.
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. The railway receives 3phase power supply from the supply authority. Information system railway systems toshiba infrastructure. May 16, 2018 traction control is a technology designed to help your vehicle maintain traction, no matter how slippery the road surface.
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