ABSTRACT
Recent advancements in power electronics has encouraged large scale use of the non-linear loads such as adjustable speed drives (ASD), traction drives, etc. Power electronics based power converters have contributed for the deterioration of the power quality and this has resulted in the increase of power losses and great economic loss. The electronic equipment like computers, battery chargers, variable frequency drives, etc., generate harmonics and cause great economic loss every year. The concept of harmonics was noticed in 1980’s and since then it has been a major problem in the power system. Harmonics can do much more than distort voltage waveforms, they can overheat the building wiring, overheat transformer units, etc. This made it important to develop equipment that can mitigate the harmonics present in the power system and we call them as harmonic Filters.
