Three phase unified power quality conditioner (UPQC) for power quality improvement by using UVTG technique

This paper presents the simulation of the unified power quality conditioner (UPQC) to mitigate voltage harmonics, voltage sag, voltage swell & current harmonics. The UPQC consists of series and shunt active power filter (APF), which are connected in cascade via a common dc-link capacitor. This paper presents the simulation is done for a three-phase UPQC working with unit vector template generation (UVTG) technique for compensation of voltage harmonics, voltage sag, voltage swell & current harmonics. The MATLAB/SIMULINK results are presented to verify the effectiveness of the proposed control technique.