The voltage is adjusted with a potentiometer that adjusts the field voltage through the voltage regulator.
Exciter controls the magnetic field in the generator system and controls the output voltage and/or current.
A natural gas generator connected to the grid has its voltage and speed (frequency) stabilised by being connected to the grid. All generators on a grid run synchronously, and it happens because if one generator has a tendency to lag behind it will produce less power and thereby maintain its speed.
The amount of current produced in the armature of a generator is primarily determined by the voltage induced in the armature winding, the resistance of the circuit, and the load connected to the generator. According to Ohm's Law, current (I) is equal to voltage (V) divided by resistance (R) (I = V/R). Additionally, factors such as the speed of rotation of the generator, the strength of the magnetic field, and the number of turns in the coil also influence the induced voltage and, consequently, the current generated.
In a separately excited DC generator, the induced voltage is directly related to the magnetic field strength produced by the field winding, which is influenced by the exciting current. If the exciting current is reduced, the magnetic field strength decreases, leading to a reduction in the induced voltage. Consequently, the output voltage of the generator will decrease as the field strength diminishes, assuming all other factors remain constant.
the voltage which is given for creating magnetic field in a generator is known as excitation voltage.
It works with two reactor coils for excitation of the field reactor coil , which in turn provides current to the field. The two reactor coils are connected in shunt and series with the output of the generator stator or armature ( from where load is connected).
high voltage field windings are connected in parallel
Increasing the field current will boost the generator output voltage, assuming the governor doesn't limit.
It doesn't! It produces voltage. It does this by the relative movement between an armature (winding into which a voltage is induced) and a magnetic field (set up by field windings). Either the armature rotates inside a fixed field (small generators) or the field rotates within a fixed armature (larger generators).Current is only supplied when a load is connected to the generator.
The voltage is adjusted with a potentiometer that adjusts the field voltage through the voltage regulator.
A generator's terminal voltage can be raised by increasing the field current. This will result in an increased load on the generator, which will slow it down unless the governor kicks in to keep the generator at speed.
field strength
Exciter controls the magnetic field in the generator system and controls the output voltage and/or current.
The excitation voltage is too low. Turn the field voltage "pot" to raise the field voltage while watching the output generator voltage.
A shunt generator is a method of generating electricity in which field winding and armature winding are connected in parallel, and in which the armature supplies both the load current and the field current.A direct current (DC) generator, not using a permanent magnet, requires a DC field current. The field may be separately excited by a source of DC, or may be connected to the armature of the generator so that the generator also provides the energy required for the field current.
The voltage produced by a generator alternates because the motion of the rotor within the magnetic field causes changes in the direction of the current flow, resulting in a fluctuating voltage output.