Railway electrification system and Rectifier

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Difference between Railway electrification system and Rectifier

Railway electrification system vs. Rectifier

A railway electrification system supplies electric power to railway trains and trams without an on-board prime mover or local fuel supply. A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction.

Alternating current

Alternating current (AC) is an electric current which periodically reverses direction, in contrast to direct current (DC) which flows only in one direction.

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Armature (electrical engineering)

In electrical engineering, an armature is the power-producing component of an electric machine.

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Capacitor

A capacitor is a passive two-terminal electrical component that stores potential energy in an electric field.

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Commutator (electric)

A commutator is a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit.

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Direct current

Direct current (DC) is the unidirectional flow of electric charge.

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Electric current

An electric current is a flow of electric charge.

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Electric locomotive

An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or on-board energy storage such as a battery or a supercapacitor.

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Electric power conversion

In electrical engineering, power engineering, and the electric power industry, power conversion is converting electric energy from one form to another such as converting between AC and DC; or changing the voltage or frequency; or some combination of these.

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Frequency

Frequency is the number of occurrences of a repeating event per unit of time.

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Ground (electricity)

In electrical engineering, ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the earth.

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High-voltage direct current

A high-voltage, direct current (HVDC) electric power transmission system (also called a power superhighway or an electrical superhighway) uses direct current for the bulk transmission of electrical power, in contrast with the more common alternating current (AC) systems.

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Insulated-gate bipolar transistor

An insulated-gate bipolar transistor (IGBT) is a three-terminal power semiconductor device primarily used as an electronic switch which, as it was developed, came to combine high efficiency and fast switching.

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Mercury-arc valve

A mercury-arc valve or mercury-vapor rectifier or (UK) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high-current alternating current (AC) into direct current (DC).

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Power inverter

A power inverter, or inverter, is an electronic device or circuitry that changes direct current (DC) to alternating current (AC).

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Rail transport

Rail transport is a means of transferring of passengers and goods on wheeled vehicles running on rails, also known as tracks.

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Resistor

A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element.

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Semiconductor

A semiconductor material has an electrical conductivity value falling between that of a conductor – such as copper, gold etc.

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Single-phase electric power

In electrical engineering, single-phase electric power is the distribution of alternating current electric power using a system in which all the voltages of the supply vary in unison.

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Thyristor

A thyristor is a solid-state semiconductor device with four layers of alternating P- and N-type materials.

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Traction motor

A traction motor is an electric motor used for propulsion of a vehicle, such as an electric locomotive or electric roadway vehicle.

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Transformer

A transformer is a static electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

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Voltage

Voltage, electric potential difference, electric pressure or electric tension (formally denoted or, but more often simply as V or U, for instance in the context of Ohm's or Kirchhoff's circuit laws) is the difference in electric potential between two points.

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