Power Plant Generator Exciter

Field breakers are used to protect both the ac and dc sides of the generator.

Power plant generator exciter. Therefore when the rotor rotates this exciter produces the power for the electromagnet. Generator parts including strategic spares from ge power help you get more reliability and life out of your power plant generator. The centralised excitation system has two or more exciter which feeds the bus bar. A power bus is required to feed the exciter current to each end of the rotor coil.

This article explains the working of exciters and the types of exciters used. The generator produces the electric field at a constant voltage. This exciter is a form of the generator system. It is further discussed below in detail.

In the past the exciter was a small dc generator coupled to the same shaft as the rotor. Excitation is an important part of the power plant electric generator because it produces the magnetic field required for power generation. Outputs include annunciation alarms meters and a full range of data for the distributed control system. This allows the generator to start and recover the excitation voltage.

It is intended for emergency or back up power applications. This excitation system is not recommended for continuous power applications. Generators and exciters don t get much respect during scheduled outages. The excitation system is the single unit in which the each alternator has its exciter in the form of generator.

By controlling the magnetic field the voltage output of the generator can be controlled. The centralised system is very cheap but the fault in the system adversely affects the alternators in the power plant. The additional power feed to the excitation system supports load requirements. Excitation system is circled in the below representation of power station.