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Since it the rate at which the flux is cutting the conductor determines the (EMF) electromotive force which is the voltage, the best way to control voltage is to adjust the speed of the engine through the governor, coupled with an automatic voltage regulator.
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∙ 13y ago
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∙ 11y agothe load
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What affect does a leading power factor have on alternator generator excitation currents?
When a leading power factor load is applied, the voltage of the genset or genset bus rises, and the voltage regulation system reduces exciter power, reducing the strength of the magnetic field. If the field fails, the generator set may slip a pole, which results in potentially catastrophic alternator damage. pawan
What is VA rating?
VA Rating stands for Volt-Ampere Rating, It is the basic unit of Alternator or Transformer. This is so because in AC System Power(P) is the product of Voltage(V),Current(I)and Power Factor. Power(P) = Voltage(V) * Current(C) * Power Factor But power factor of the load is never constant and depends on the type of load. So to resolve this problem power ratings of the above mentioned machine is always rated in VA or KVA and its the product of voltage and current.
What is power factor of resistor?
A resistor doesn't have a power factor. However, if a circuit is pure resistance in nature the power factor will be one when a voltage is applied and a current flows in the circuit. The power factor is a measure of the relative phases of the current and voltage in a circuit.
When two alternator running in parallel the power factor from 8 drops to 5 or less why is it so?
power factor 0.8 drops to .05 when two alternator running in parallel
What is the relation between power factor and frequency for purpose of parallel operation of alternator?
No relation is there power factor is a unit less quantity.
What affect does a leading power factor have on alternator generator excitation currents?
When a leading power factor load is applied, the voltage of the genset or genset bus rises, and the voltage regulation system reduces exciter power, reducing the strength of the magnetic field. If the field fails, the generator set may slip a pole, which results in potentially catastrophic alternator damage. pawan
Powertrain Control Module plus BB Voltage Low?
Low plus bb voltage to the Power Train Module means that for some reason the voltage actually is too low. Check the battery an alternator for the proper voltage output.
What is VA rating?
VA Rating stands for Volt-Ampere Rating, It is the basic unit of Alternator or Transformer. This is so because in AC System Power(P) is the product of Voltage(V),Current(I)and Power Factor. Power(P) = Voltage(V) * Current(C) * Power Factor But power factor of the load is never constant and depends on the type of load. So to resolve this problem power ratings of the above mentioned machine is always rated in VA or KVA and its the product of voltage and current.
Why does an alternators voltage drop sharply when it is loaded down with a lagging load?
An alternator's terminal voltage shouldn't drop 'sharply' when subjected to a lagging power-factor load. After all, most practical loads are inductive and it wouldn't do for an alternator's terminal voltage to drop 'sharply' for what is a normal load. Nevertheless, in common with most voltage sources, there will be a moderate drop in its terminal voltage due to the internal voltage drop caused by the load current passing through the impedance of the armature windings. Perhaps surprisingly, however, there may be an increase in terminal voltage when supplying a leading power factor, the reason for which can be demonstrated using simple phasor analysis of the alternator's induced e.m.f. and internal voltage drop -this cannot be shown here, but there are lots of websites which demonstrate this.
Is the voltage regulator on a 2007 dodge power ram 3500 separate from the alternator?
It's built into the alternator.
What is power factor of resistor?
A resistor doesn't have a power factor. However, if a circuit is pure resistance in nature the power factor will be one when a voltage is applied and a current flows in the circuit. The power factor is a measure of the relative phases of the current and voltage in a circuit.
When two alternator running in parallel the power factor from 8 drops to 5 or less why is it so?
power factor 0.8 drops to .05 when two alternator running in parallel
Power equals voltage times what?
In DC, power equals voltage x current. In AC, power equals voltage x current x power factor. The power factor is an adimensional constant, and in common circuits it is often close to 1.
How car battery produces the power?
A battery does not produce power, it just stores power. The alternator produces the DC voltage the battery stores. As the power is taken from the battery it is replenished by the alternator.
Why the sending end voltage is less than receiving end voltage in case of load with leading power factor?
The voltage is attenuated by the resistance in the media used for transmission. This is regardless of the power factor.
Why should always be power factor less than 1?
Power factor can also be equal to 1. Power is greatest when voltage and current are in phase; the "power factor" is used to specify how much less the power is, compared to the product of voltage x current, if they are not.
How does the variation of excitation of an alternator correct power factor?
The rotor of an alternator need a DC voltage applied to it to generate a magnetic field, this magnetic field will generate the AC power in the AC windings.The AVR(Automatic Voltage Regulator) is regulating this DC voltage so that the magnetic field is strong enough to maintain the output AC voltage. As soon as more current is drawn from the output, this output voltage will drop and a stronger magnetic field is needed to sustain the output voltage, so the AVR step up the exiting voltage to get a stronger magnetic field to compensate for the voltage loss in the AC windings.
