You would have to apply a higher voltage from outside - for example, in the case of DC, connect a battery that provides more voltage, or connect more than one battery in series; or in the case of AC, use a transformer to increase the voltage.
Terminal voltage is the voltage between the output terminals of a generator.
The speed of a generator only effects the frequency. Most generators operate at 1800 RPM. The output voltage is controlled by varying the field excitation voltage.
The amount of voltage of an electrical generator will determine the limit of the output of energy. If the voltage is too high, it can burst the pipes causing it to shut down.
First you have to understand how a generator works. Basically the excitation voltage is what varies according to generator output. Usually on a power source that has a inconsistant rpm, the excitation voltage will vary similar to a govenor in order to hold the generator output constant.
Exciter controls the magnetic field in the generator system and controls the output voltage and/or current.
In a series generator, the voltage output is directly affected by the load. As the load increases, the voltage output decreases due to increased voltage drops across the internal resistance of the generator. Conversely, reducing the load will result in an increase in the voltage output.
Increasing the number of coils on a generator can increase its voltage output. More coils mean more wire loops, which can generate a stronger magnetic field and induce a higher voltage. This can be useful in increasing the power output of the generator.
Terminal voltage is the voltage between the output terminals of a generator.
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.
The speed of a generator only effects the frequency. Most generators operate at 1800 RPM. The output voltage is controlled by varying the field excitation voltage.
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.
If the output of a generator is increased from 220 volts to 400 volts, it could be due to an adjustment of the generator's voltage regulator or the generator being overloaded. This change in voltage could be dangerous for equipment designed to operate at lower voltages and could potentially lead to damage. It is important to ensure that the voltage output of a generator remains within safe limits for the equipment being powered.
Increasing the field current will boost the generator output voltage, assuming the governor doesn't limit.
The main disadvantage should be obvious - when the output voltage of the generator is used to provide field current to the generator....what happens if the output voltage sags? If the output voltage becomes depressed, the output power of the generator is compromised (becomes less and less), this in turn can cause the output to become more depressed, leading to an incrementally decreasing output capability. The main advantage is cost savings.
The amount of voltage of an electrical generator will determine the limit of the output of energy. If the voltage is too high, it can burst the pipes causing it to shut down.
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.
The voltage and frequency ARE the output of the generator. If you change the fuel to the generator, it will change speed, and the voltage will change. Less fuel = less speed = lower frequency = lower voltage.