motor generator - ορισμός. Τι είναι το motor generator
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Τι (ποιος) είναι motor generator - ορισμός

DEVICE FOR CONVERTING ELECTRICAL POWER TO ANOTHER FORM
Motor Generator; Dynamotor; Motor-generator set; Motor-generator; Modyn; Flywheel-generator; Draft:Motor transformer; Motor–transformer; Motor transformer; Motor-transformer; Motor–generators; Motor-generators

Motor generator         
·add. ·- The combination consisting of a generator and a driving motor mechanically connected, usually on a common bedplate and with the two shafts directly coupled or combined into a single shaft.
Motor-Generator         
A combined motor and generator used to lower the potential difference in a portion of a circuit, e. g., that part within a building. A motor-generator is a dynamo whose armature carries two commutators, with two separate windings, one of fine wire of many turns, the other of coarse wire of few turns. If the potential of the system is to be lowered, the main current is passed through the fine winding. This
causes the armature to turn motor-fashion, and a potential difference is generated by the rotation of the large coils in the field. This potential difference is comparatively low and by properly proportioning the windings may be lowered to as great a degree as required. The same apparatus may be inverted so as to raise potential difference. It acts for continuous current systems as the induction coil transformer does for alternating current systems. Synonym--Continuous Current Transformer.
Electric generator         
  • Hydroelectric power station at [[Gabčíkovo Dam]], [[Slovakia]]
  • Protesters at [[Occupy Wall Street]] using bicycles connected to a motor and one-way diode to charge batteries for their electronics<ref>[http://cityroom.blogs.nytimes.com/2011/10/30/with-generators-gone-wall-street-protesters-try-bicycle-power/ With Generators Gone, Wall Street Protesters Try Bicycle Power], Colin Moynihan, ''New York Times'', 30 October 2011; accessed 2 November 2011</ref>
  • The [[Faraday disk]] was the first electric generator. The horseshoe-shaped magnet ''(A)'' created a magnetic field through the disk ''(D)''. When the disk was turned, this induced an electric current radially outward from the center toward the rim. The current flowed out through the sliding spring contact ''m'', through the external circuit, and back into the center of the disk through the axle.
  • alternating current generator]], c. 1900.
  • Early [[Ganz]] Generator in [[Zwevegem]], [[West Flanders]], [[Belgium]]
  •  R<sub>L</sub>, load resistance
}}
  • The [[Athlone Power Station]] in [[Cape Town]], [[South Africa]]
  • commutator]] needed for high power applications.
  • Mobile electric generator
  • kVA]] direct-driven power station AC alternator, with a separate belt-driven exciter generator.
  • [[Hippolyte Pixii]]'s dynamo. The commutator is located on the shaft below the spinning magnet.
DEVICE THAT CONVERTS OTHER ENERGY TO ELECTRICAL ENERGY
Generator (device); Electrical generators; Power unit; Electricity generator; Direct-current generator; Emergency vehicle generator; Energy generator; Electric generators; Turbine generator (TG); AC generator; Tachogenerator; Electric power generator; Electrical Generator; Electrical generator; DC Generator; Turbine generator; Energy generation; DC generator; Generator (electricity)
In electricity generation, a generatorAlso called electric generator, electrical generator, and electromagnetic generator. is a device that converts motive power (mechanical energy) into electric power for use in an external circuit.

Βικιπαίδεια

Motor–generator

A motor–generator (an M–G set) is a device for converting electrical power to another form. Motor–generator sets are used to convert frequency, voltage, or phase of power. They may also be used to isolate electrical loads from the electrical power supply line. Large motor–generators were widely used to convert industrial amounts of power while smaller motor–generators (such as the one shown in the picture) were used to convert battery power to higher DC voltages.

While a motor–generator set may consist of distinct motor and generator machines coupled together, a single unit dynamotor (for dynamo–motor) has the motor coils and the generator coils wound around a single rotor; both the motor and generator therefore share the same outer field coils or magnets. Typically the motor coils are driven from a commutator on one end of the shaft, while the generator coils provide output to another commutator on the other end of the shaft. The entire rotor and shaft assembly is smaller, lighter, and cheaper than a pair of machines, and does not require exposed drive shafts.

Low-powered consumer devices such as vacuum tube vehicle radio receivers did not use expensive, noisy and bulky motor–generators. Instead, they used an inverter circuit consisting of a vibrator (a self-exciting relay) and a transformer to produce the higher voltages required for the vacuum tubes from the vehicle's 6 or 12 V battery.