Generator exciter diagram
- how excitation works in generators
- how does generator excitation work
- what is excitation in generator
- how do generator excitation systems work
Excitation system of generator.
Static excitation systemExcitation in Power Plant Generators: Brief Overview
The main requirement for electricity generation as per the basic principle is a magnetic field. The generator while producing electricity also has to produce this at a constant voltage for the electrical system to work properly.
Controlling the magnetic field controls the voltage output of the generator.
How does one produce and control this magnetic field in a large generator?
The rotor or the field coils in a generator produce the magnetic flux that is essential to the production of the electric power.
The rotor is a rotating electromagnet that requires a DC ( Direct Current) electric power source to excite the magnetic field. This power comes from an exciter.
DC Exciter
In the past, the exciter was a small DC generator coupled to the same shaft as the rotor.
Types of excitation in generator
Therefore, when the rotor rotates this exciter produces the power for the electromagnet. Control of the exciter output is done by varying the field current of the exciter. This output from the exiter then controls the magnetic field of the rotor to produce a cons