A Harmonic Excitation System for Turbine Generators

A harmnonic excitation system, as the name implies, utilizes the harmonic power developed in a generator to selfexcite it. By means of a separate stator winding, this power is captured and controlled and rectified with a magnetic amplifier and silicon rectifiers. Protective features are included to prevent loss of excitation in the event of a rectifier failure. Factory tests indicate extremely rapid response to system disturbances.