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In an alternator what is the initial excitation current from the battery is supplied to?
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Why the rotor of an alternator at rated power dissipates more heat at a low power factor load?
In an alternator, the load current is supplied by the stator and the excitation is applied to the rotor. When the power factor is low (lagging), more excitation is required to maintain rated output voltage at rated current. More excitation is also required to maintain rated output voltage with increased output current. Increased excitation current means increased rotor losses that must be dissipated as heat. (akash)
How do you calculate the excitation voltage and current of an alternator?
formals to calculate exciation voltage of alternator
Why The Excitation current is non-sinusoidal when applied voltage is sinusoidal?
excitation voltage is sinusoidal because it is taken from the terminal of alternator but excitation current is non-sinusoidal because it always dc.
What function does the third wire not the battery wire and not the wire with the plastic clip serve on the alternator of an 87 Nissan pickup?
The third wire is for whats called the sensing or pre-excitation circuit. This wire supplies the initial current from the battery to the alternator's field coil that starts the buildup of the magnetic field that allows the alternator to start producing current.
Do running headlights drain the car battery?
No. The power to illuminate the Daytime Running Lights (DRL's) is supplied by the alternator, and does not have to be supplied by the battery. Once a vehicle is started and the engine is running you could remove the battery from the car entirely and everything requiring current would still operate.
Where does the voltage that is necessary for field excitation on the rotor originates from?
The excitation current is provided by a small self-excited pilot generator, attached to the same shaft as the alternator's rotor.
What part of an automobile supplies current?
Alternator and battery
What is excitation of DC machine?
In general terms, 'excitation' simply describes the process by which an electric current produces a magnetic field. But, more specifically, it refers to the creation of the magnetic field by the field windings of a motor or generator. In the case of an alternator, for example, the armature windings (the windings into which voltages are induced) are stationary, and inserted into slots cut into the inner face of the stator. The field is then provided by the rotor which is supplied (via slip rings) with a 'excitation' current provided by an external d.c. voltage.
Why there is current in spark plug?
In and of itself, there is no current in a spark plug. Once a current is supplied, from an ignition coil (via a points distributer), or from a solid state ignition system (directed by a crank shaft sensor) a special ignition grade wire carries the current to the electrode of the spark plug. The primary current for the procedure to take place is supplied by the alternator when the engine is running, or by the battery when the engine is being started.
Which component controls the amount of current that the alternator sends to the battery?
Regulator.
What is an alternator for?
The alternator generates power to run the car and charge the battery. An alternator in a vehicle generates Alternate Current (AC) instead of Direct Current (DC) electricity to power the vehicle.
In synchronous motor theory is excitation current the same as field current?
yes. excitation current is same as field current to my knowledge
