Excitation System is specifically designed for providing filed current to rotor winding of a generator. It is widely used and appreciated for ensuring stability and fast transient response. This system also utilizes automatic voltage regulators for supplying DC output to the exciter stator. It can also be defined as a system that produces flux by passing current in field windings. The offered Excitation System offers various salient features that include ease of maintenance, high reliability, easy to use and durability. Moreover, the amount of excitation required depends upon the load power factor, load current and speed of the machine.