A self-tuning filter for the mitigation of power system harmonics

This thesis presents a novel self-tuning filter for the mitigation of power system harmonics. The device is based on the passive filter method with the inductive element being a variable reactor. A new type of variable reactor is introduced. The thyristor linked reactor (TLR) is a switch-able device that utilizes thyrsitors to add or remove turns of an inductor changing its inductance.; The self-tuning filter is presented within the frame work of harmonic mitigation as a method of power quality control. The device is studied in terms of steady state and transient switching response. Examples are presented to show where and how the novel self-tuning filter can be applied.