Alternator

turbo-alternatoralternatorsgeneratorsynchronous speedturbo alternatorturbo alternatorsAC alternator-rectifierRevolving armature alternatorrotating machineturbo-alternators
An alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current.wikipedia
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Linear alternator

linear generatorlinear electrical generatorlinear generators
Occasionally, a linear alternator or a rotating armature with a stationary magnetic field is used.
An alternator is a type of alternating current (AC) electrical generator.

Alexanderson alternator

Alexanderson Radio Alternatoralternator transmitterhigh frequency alternator
Specialized radio frequency alternators like the Alexanderson alternator were developed as longwave radio transmitters around World War 1 and used in a few high power wireless telegraphy stations before vacuum tube transmitters replaced them.
An Alexanderson alternator is a rotating machine invented by Ernst Alexanderson in 1904 for the generation of high-frequency alternating current for use as a radio transmitter.

Alternating current

ACalternating-currentalternating
An alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current.
The first alternator to produce alternating current was a dynamo electric generator based on Michael Faraday's principles constructed by the French instrument maker Hippolyte Pixii in 1832.

Armature (electrical)

armaturearmaturesArmature (electrical engineering)
For reasons of cost and simplicity, most alternators use a rotating magnetic field with a stationary armature.
The parts of an alternator or related equipment can be expressed in either mechanical terms or electrical terms.

Commutator (electric)

commutatorcommutatorscommutation
Rotating generators naturally produced alternating current but, since there was little use for it, it was normally converted into direct current via the addition of a commutator in the generator. Until the 1960s, automobiles used DC dynamo generators with commutators.
This permits the use of very small singular brushes in the alternator design.

Rotor (electric)

rotorrotorsnon-salient pole
Typically, a rotating magnet, called the rotor turns within a stationary set of conductors wound in coils on an iron core, called the stator.
The rotor is a moving component of an electromagnetic system in the electric motor, electric generator, or alternator.

Magneto

magnetosMagneto (generator)generator
An alternator that uses a permanent magnet for its magnetic field is called a magneto.
It is categorized as a form of alternator, although it is usually considered distinct from most other alternators, which use field coils rather than permanent magnets.

Direct current

DCdirect-currentDC current
Rotating generators naturally produced alternating current but, since there was little use for it, it was normally converted into direct current via the addition of a commutator in the generator.
The alternator is an AC device which uses a rectifier to produce DC for battery charging.

Dynamo

dynamo-electric machinedynamosbrush arc light dynamos
Until the 1960s, automobiles used DC dynamo generators with commutators.
Dynamos were the first electrical generators capable of delivering power for industry, and the foundation upon which many other later electric-power conversion devices were based, including the electric motor, the alternating-current alternator, and the rotary converter.

Diesel multiple unit

DMUdiesel multiple unitsDEMU
In later diesel electric locomotives and diesel electric multiple units, the prime mover turns an alternator which provides electricity for the traction motors (AC or DC).
In a diesel–electric multiple unit (DEMU), a diesel engine drives an electrical generator or an alternator which produces electrical energy.

Polyphase system

polyphasephasephase conductors
After 1891, polyphase alternators were introduced to supply currents of multiple differing phases.
An induction generator produces electrical power when its rotor is turned faster than the synchronous speed.

Electromagnetic induction

inductionmagnetic inductioninduced
Alternating current generating systems were known in simple forms from the discovery of the magnetic induction of electric current in the 1830s.

Revolutions per minute

rpmr.p.m.RPMs
P is the number of poles (2, 4, 6, …) and N is the rotational speed in revolutions per minute (RPM).

Slip ring

slip ringsSlipringcollector ring
The advantage is that then the rotor circuit carries much less power than the armature circuit, making the slip ring connections smaller and less costly; only two contacts are needed for the direct-current rotor, whereas often a rotor winding has three phases and multiple sections which would each require a slip-ring connection.
Also called rotary electrical interfaces, rotating electrical connectors, collectors, swivels, or electrical rotary joints, these rings are commonly found in slip ring motors, electrical generators for alternating current (AC) systems and alternators and in packaging machinery, cable reels, and wind turbines.

Stator

field currentstator bladestator winding
Typically, a rotating magnet, called the rotor turns within a stationary set of conductors wound in coils on an iron core, called the stator.
An AC alternator is able to produce power across multiple high-current power generation coils connected in parallel, eliminating the need for the commutator.

Electric generator

generatorgeneratorselectrical generator
An alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current.
Through a series of discoveries, the dynamo was succeeded by many later inventions, especially the AC alternator, which was capable of generating alternating current.

Battery isolator

On single alternator circuits, the power may be split between the engine starting battery and the domestic or house battery (or batteries) by use of a split-charge diode (battery isolator) or a voltage-sensitive relay.
The primary benefit of such an arrangement is the ability to simultaneously charge more than one battery from a single power source (e.g., an alternator) without connecting the battery terminals together in parallel.

Flux switching alternator

A flux switching alternator is a form of high-speed alternator, an AC electrical generator, intended for direct drive by a turbine.

Internal combustion engine

engineinternal combustioninternal combustion engines
Alternators are used in modern automobiles to charge the battery and to power the electrical system when its engine is running.
The battery's charged state is maintained by an automotive alternator or (previously) a generator which uses engine power to create electrical energy storage.

Diesel locomotive

diesel-electric locomotivedieseldiesel locomotives
In later diesel electric locomotives and diesel electric multiple units, the prime mover turns an alternator which provides electricity for the traction motors (AC or DC).
In a diesel–electric locomotive, the diesel engine drives either an electrical DC generator (generally, less than 3000 hp net for traction), or an electrical AC alternator-rectifier (generally 3000 hp net or more for traction), the output of which provides power to the traction motors that drive the locomotive.

Magnetic field

magnetic fieldsmagneticmagnetic flux density
For reasons of cost and simplicity, most alternators use a rotating magnetic field with a stationary armature. An alternator that uses a permanent magnet for its magnetic field is called a magneto.

Power station

power plantpower plantspower stations
Alternators in power stations driven by steam turbines are called turbo-alternators.