Electric train power system

Railway electric traction

OverviewUnit typesHistoryBattery electric rail vehiclesHigh-speed railSee alsoExternal links

Direct current (DC) traction units use current drawn from a third rail, fourth rail, ground-level power supply or an overhead line. AC voltage is converted into DC voltage by using a rectifier. Alternating current (AC) traction units involve an inverter and produce variable traction output based on the frequency of the AC current. They are equipped in most modern rolling stock for lower maintenance cost and easier scalability relative to DC units.

Railway Energy Simulation Considering Traction Power Systems

7.2.1 DC Electric Railway Traction Network. The railway traction power supply system is responsible for providing power energy for vehicles and power supply equipment. The composition of a DC railway traction power supply system is shown in Fig. 7.1 [], which includes the external distribution power grid and the railway owned internal power supply system.

Network Rail A Guide to Overhead Electrification

Overhead line electrification equipment, which supplies electric power to the trains. Overlap : Each length of the contact wire overlaps with the next so that the pantograph slides smoothly from one to the other. Pantograph : The device on top of the train that collects electric current from the contact wire to power the train. Structure gauge

Powertrain

The manufacturing of powertrain components and systems is important to industry, including the automotive and other vehicle sectors. Competitiveness drives companies to engineer and produce powertrain systems that over time are more economical to manufacture, higher in product quality and reliability, higher in performance, more fuel efficient, less polluting, and longer in life

What is Electric Traction Systems

Types of Electric Traction Systems. Electric traction systems can be broadly categorized based on their application and power source: 1. Railway Systems Electric Trains: Operate on tracks with power supplied either through overhead catenary wires or a third rail. Light Rail and Trams: Used in urban environments, often sharing space with road

Overhead lines vs third rail: how does rail electrification work?

Environmentally, electric trains do not pollute the air during operation. According to Network Rail, they emit 20-30% less carbon per passenger mile than diesel-powered locomotives.. Electrification plays a crucial role in modern railway systems, providing efficient and sustainable power to trains.

Electrical railway power supply systems: Current situation and

Railway electric power feeding systems. Japan Railw Transp Rev, 16 (1998), pp. 48-58. Google Scholar [15] Railway static power conditioners for high-speed train traction power supply systems using three-phase V/V transformers. IEEE Trans Power Electron, 26 (10) (2011), pp. 2844-2856. View in Scopus Google Scholar

Electric Power System

What is an Electric Power System? An electric power system or electric grid is known as a large network of power generating plants which connected to the consumer loads.. As, it is well known that "Energy cannot be created nor be destroyed but can only be converted from one form of energy to another form of energy". Electrical energy is a form of energy where we transfer this

Traction power systems for electrified railways: evolution, state of

In electrified railways, traction power system (TPS) provides electric locomotives with uninterrupted electric energy from the utility grid and is also the only way for them to

Economic, environmental and grid-resilience benefits of

At near-future battery prices (US$100 kWh –1), battery-electric trains can achieve parity with diesel-electric trains if environmental costs are included or if rail companies can access

The Traction Power Substation in Railway Systems

The Role of Traction Power Substations in Railway Systems Ensuring Reliable and Efficient Power Supply. The primary function of a Traction Power Substation is to provide a reliable and efficient power supply to the railway system. Electric trains rely on a continuous and stable power source to operate.

Traction power systems for electrified railways: evolution, state of

Traction power systems (TPSs) play a vital role in the operation of electrified railways. The transformation of conventional railway TPSs to novel structures is not only a trend to promote the development of electrified railways toward high-efficiency and resilience but also an inevitable requirement to achieve carbon neutrality target. On the basis of sorting out the

Electrification of U.S. Railways: Pie in the Sky, or Realistic Goal?

Electric Trains vs. Diesel Trains. (VHSR) service and will use electric power. The system is scheduled to be operational by 2022 and has an initial estimated cost of $5 billion. Other electric VHSR systems (which would be electric-powered) are also being considered around the country, but do not yet have funding.

Overhead vs third rail: how does rail electrification work?

Overhead lines, also known as overhead catenary systems, utilise a network of wires suspended above the tracks to supply electric power to trains. The system operates on alternating current (AC) and is widely used in

1500 V DC railway electrification in Hong Kong

Hong Kong MTR uses electric trains, powered by two different technologies – 1500 V DC on the ''urban'' rail lines, and 25 kV AC for the former KCR network. Today we look at 1500 V DC railway electrification across Hong Kong. Powering the trains. Each train has a pantograph. To collect power from the overhead wires.

Head-end power

MBTA Commuter Rail car with U.S. standard head-end power electrical connection cables. In rail transport, head-end power (HEP), also known as electric train supply (ETS), is the electrical power distribution system on a passenger train.The power source, usually a locomotive (or a generator car) at the front or ''head'' of a train, provides the electricity used for heating, lighting,

Railway Energy Part 1: traction power system

electrical sections according to operational necessity. Feeder lines are also part of the contact line system; Traction Power Return System – A traction power return system refers to all conductors including the grounding system for the electrified railway tracks, which form the intended path of the traction return current from the wheel-

Electric locomotives and catenary power systems – Part 1: basic

The steam locomotive is largely obsolete except for tourist trains and some outside-the-mainstream scenarios, and the diesel-only engine is sometimes a viable option but difficult to control at all speeds and torques. Electric locomotives and catenary power systems – Part 3: power Electric locomotives and catenary power systems

Electrical Railway Power Supply Systems for High-Speed Lines:

This chapter aims to provide a general but comprehensive overview of the evolution of electrical railway power supply systems (ERPSS) for high-speed railway lines. To this end, the chapter starts describing the conventional transformer-based configurations and the...

Understanding Electric Rail Traction Systems | Swartz Engineering

Electric rail traction systems are electrical propulsion systems used to power trains and trams. They rely on electric power from overhead lines or third rails to drive electric motors, which in turn propel the train. Swartz Engineering has been at the forefront of developing advanced electric rail traction technologies, enhancing efficiency

Optimal control and energy storage for DC electric train systems

Electrified railways are becoming a popular transport medium and these consume a large amount of electrical energy. Environmental concerns demand reduction in energy use and peak power demand of railway systems. Furthermore, high transmission losses in DC railway systems make local storage of energy an increasingly attractive option. An optimisation

Understanding Electric Rail Traction Systems | Swartz Engineering

Electric rail traction systems are electrical propulsion systems used to power trains and trams. They rely on electric power from overhead lines or third rails to drive electric

Traction power systems for electrified railways: evolution, state of

Traction power systems (TPSs) play a vital role in the operation of electrified railways. The transformation of conventional railway TPSs to novel structures is not only a

Power train system, what it is and what parts make it up

A vehicle''s power train system is the system that allows the power generated by the engine to be transmitted to the wheels in both electric and combustion vehicles. The power train system is what lets the vehicle move. The power train system is also known as the propulsion system. What parts make up a power train system? The power train