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How does a voltage regulator regulate the voltage output of an ac generator?
Wiki User
∙ 13y ago
Generator output is controlled by voltage feedback to the voltage regulator which senses voltage drop or rise and regulates the current being sent to the armature. This rise and fall of the armature current governs the generators output voltage.
Wiki User
∙ 13y ago
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What is the difference of a fixed regulator from an adjustable regulator?
A fixed voltage regulator outputs only one specific voltage. An adjustable voltage regulator can be adjusted to output any voltage from the range it was designed for by changing the output resistors.
What is voltage stabilizer?
Voltage stabilizer is use to regulate the voltage the output of any device
Why should a prime mover's speed be kept constant?
As you asked the question and it was added it to the electrical category I am presuming that you are talking about electrical generation. The prime mover has to be kept at a constant speed. The speed of the prime mover governs the frequency of the voltage generated. As the load increases the engine will start to slow down. The engine's speed governor senses this drop in RPM, hence the drop in frequency, and increases the fuel supply to the engine by advancing the diesel engine's fuel rack. This action increases the engine speed and brings the generated frequency back to the required system frequency.Also as the load increases, the output voltage will start to decrease. The output voltage is controlled by the generator's voltage regulator. When the decrease in voltage is sensed by the voltage regulator, it increases the generator's field excitation voltage which will bring the voltage back to the required system voltage.These actions are going on continuously, balancing each other all the time the engine is running and the generator is producing an output voltage.
Why dc output voltage of a bridge rectifier varies with the load current?
aA A: the output of a Bridger's rectifier will always follows proportionally to the load since it does not regulate the output it merely transform AC TO DC '
Does voltage regulator increase or decrease the current input?
A DC voltage regulator gives a constant output voltage provided the input voltage is at least 1.5 v higher, up to a given limit. The input current is slightly more than the load current, because a small amoutn of current is needed for the voltage regulator circuit. Check the datasheet of the component which you are using to find the limits. 7805 IC can give upto 1A of current if there is adequete heatsinking.
What does the voltage regulator do on a generator?
A voltage regulator controls the output voltage of a generator. This ensures only the specified ÊvoltageÊis supplied thus preventing damage to the circuit and other electrical appliances.Ê
Discuss on the losses of generator power output?
The field excitation could have been lost. Check the output from the voltage regulator.
What is the purpose of the automatic voltage regulator?
The purpose of an adjustable voltage regulator is to have a regulator that can give out variable voltages. This is in contrast to a fixed voltage regulator which only outputs one voltage, which it is rated for. To allow for adjustable voltage, usually the resistors on the output of the regulator just need to be swapped for different values to give differing output voltages.
What is the excitation system in a generator used for?
The excitation system is used to control the excitation of the rotating field in the armature. By increasing the armature current, it in turn increases the magnetic flux in the armature coil. This has the effect of increasing the voltage output of the generator. By lowering the armature current this in turn lowers the generator output voltage. The generator's voltage regulator automatically adjusts the output voltage continuously as the applied load on the generator changes.
What causes increase of the output of a generator that should be 220 volt to 400 volt?
It sounds like the field voltage potentiometer is not working or has been turned up. Try turning it down and see if the output voltage goes down with it. If it doesn't then the voltage regulator is not working as the field voltage is regulated from the regulator.
What is the difference of a fixed regulator from an adjustable regulator?
A fixed voltage regulator outputs only one specific voltage. An adjustable voltage regulator can be adjusted to output any voltage from the range it was designed for by changing the output resistors.
What is meant by regulation or an alternator?
Regulation of an alternator is varying or adjusting the d.c. current flow (excitation current) in the revolving field coil to control the output voltage. When an alternator is subject to varying load conditions, and therefore changing load resistance at the output, the output voltage will vary in response. When output voltage is reduced in response to increased load (reduced output resistance), the "voltage regulator" will respond by increasing the excitation current to increase the voltage output. If load is reduced, the generator will momentarily become over-excited and the ouput voltage will increase. The voltage regulator responds by decreasing excitation current, returning the generator output voltage to its nominal level.
How do you make generator output voltage stable?
Inside the generators junction box there will be termination points that the generator coils terminate on. On the inside of the lid of the junction box there should be a diagram for different connections allowed for that generator. By moving jumpers around across these terminals a variety of voltages can be obtained.
How does the load affect voltage output of a series generator?
In a series generator, as load is added, output voltage increases.
What is the off load voltage of the generator?
Terminal voltage is the voltage between the output terminals of a generator.
How does an alternator know how much voltage output?
Output of the alternator is controlled by the voltage regulator.
What does a dodge voltage regulator do?
It controlls the output voltage of the alternator.
