Design and implementation of a 3-phase series active filter to compensate voltage disturbances

The quality and the power transfer from the AC mains can be improved by the inclusion of electronic power systems such as active filters. Line perturbations (voltage changes, noise, sags, dips, flicker, harmonics, etc.) can be reduced by including a voltage conditioner or a series active filter. This paper is related to the study of a three-phase active filter topology that improves the voltage quality and is capable of working with two phases if one of the phases in a 3-phase system is faulted. Furthermore, the paper presents a compensation method that is programmed in a DSP board. Finally, simulation and experimental results are shown.