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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 the difference between alternator and generator and what do you use in power plants mostly and why?
The term, 'generator', can be applied to both A.C. and D.C. machines. An 'alternator' is specifically an A.C. generator. Power stations use alternators, because it is necessary to transmit electrical energy at high voltages, and this is done using transformers, which are A.C. machinesmain difference depends on magnetic field spin or fixed..."In an alternator, electricity is produced when a magnetic field spins inside the stator. In generator, the armature or windings of wire spin inside a fixed magnetic field to generate electricity"alternator use on smallscale production & generator use on large scale..
Why the field windings are placed in rotor of alternator?
In an alternator, field windings are placed on the rotor to create a rotating magnetic field necessary for inducing electrical current in the stator windings. This configuration allows for a more compact design and enables the use of higher magnetic flux densities, improving the alternator's efficiency. By placing the field windings on the rotor, the alternator can generate a strong magnetic field while keeping the stator stationary, which simplifies the design and minimizes wear on the components. Additionally, this arrangement allows for easier cooling of the rotor and better control of the magnetic field strength.
In what field is genetic engineering commonly applied?
Mainly agriculture
What is excitation and why is it needed for start up in an AC generator?
An alternator is just another name for a synchronous generator. Excitation is needed to create a magnetic field in the rotor. When to rotor is spun with excitation the magnetic field will cut through the stator field and produce an AC voltage in the stator field. In terms of an alternator with built in rectifier the stators AC voltage in the rectified to DC. The strength of excitation will determine the alternators output voltage. The AVR Automatic Voltage Regulator built into almost every alternator controls field current to maintain a constant output voltage.
Remove positive battery terminal and car dies?
Yes it does. The alternator will only produce voltage if it has a battery supply. The battery power is used to create a magnetic field in the alternator. Spinning the magnetic field induces an electric field in the stator windings. Then the alternator can produce power to recharge the battery and maintain the electrical supply to the engine and ancilliary circuits.Take away the battery, no electrics, engine dies. Plus, it can also cause an electrical spike that could damage the computer.
What does a brush do in a alternator?
In an alternator, brushes are conductive components that maintain electrical contact with the rotating part called the rotor. They transfer current from the stationary part of the alternator to the rotor, allowing it to generate a magnetic field. This magnetic field is essential for inducing alternating current (AC) in the stator windings, which is then converted to usable electrical power for the vehicle's electrical system. Proper functioning of the brushes is crucial for the alternator's efficiency and overall performance.
Why is there change in terminal voltage as load applied to a three phase alternator?
The AVR (Automatic Voltage Regulator) control the DC field voltage to the rotor of the alternator, as soon as higher load is demanded from the alternator, the AVR output voltage go higher, hence, a higher AC voltage on the output of the alternator. If the voltage go to high then the AVR is faulty.
On a 1991 Dodge alternator you need to know which is the field wire Blue or green and What is the other one wire for?
This is a dual-field alternator, they both are field connections.
Name the types of alternators based on their rotor construction?
1) Rotating armature alternator, rotates in stationary magnetic field. 2) Rotating field alternator, the magnetic field is rotating.
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
The fan light brake light and the battery charge light comes on on your dashboard what is it or why?
Is it possibly a broken/missing alternator or serpentine belt? (nope just alternator light) It can also be a failing voltage regulator within the alternator, or a failing alternator itself. It is usually the carbon brushes in the alternator when both lights come on, it indicates a field problem with alternator Brushes are not to hard to change on a toyota, just remove the alternator from car, remove rear cover unscrew the brush holder and rectifier?(they are attached together) and install new brushes... you will need a soldering iron. It is a simple repair and at less than 10$ is more affordable than replacing the alternator. VW and Volvo have removable brush holders that unscrew from back of alternator Gm Ford and Mopar, you may have to split alternator to change brushes, there is often a small hole in back of alternator where you can use a piece of wire to keep brushes compressed when you put alternator back together easy job ... save your money
What is the exciter wire on a GM alternator?
It is the wire that supplies the initial field current to the alternator from the battey. Once the alternator is rotating the field current will be provided by the diodes from the current produced by the alternator. excitor wire is usually wired through the charging indicator light.
How a brush type 3 phase alternator works?
A pair of slip rings on the rotor carries current from the stationary brushes to the rotor windings in order to establish a magnetic field. As the alternator rotates, the magnetic field sweeps across the stator windings inducing an electric current in these windings. This current is an alternating current which is rectified via diodes and passed out of the alternator by means of the battery lead and (usually) the grounded alternator case. The battery voltage is sensed and used to vary the amount of current fed to the rotor in order to adjust the amount of current generated.
What is function of a stator in alternator?
The stator is the stationary winding assembly that makes the magnetic field inside the alternator. It is this magnetic field that the armature rotates in generating the electricity.
Where is the alternator field fuse located on a 1999 Ford F150 5.4L Engine?
The1999 Ford F1 50 pickup truck 5.4 liter engine alternator field fuse can be found in the fuse box. The alternator field fuse will be in the second column, second from the top.
What does a stator do on an alternator?
The stator on an alternator is used to generate a magnetic field. This is a large factor in the production of electricity.
