Abstract
A straightforward approach to suppress three-phase supply current and load voltage distortions is presented. This latter uses the unified power quality conditioner (UPQC) topology made up of a hybrid active power filter (APF) combination based on a series APF, sharing a common DC voltage with a parallel APF, and passive filters. Supply current distortion is introduced by connecting a non-linear load, while load voltage distortion occurs after adding 5 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> and 7 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> harmonics to the AC main voltage. The series APF controller forces load voltage to be sinusoidal, whereas parallel APF and passive filters counter harmonic contents from supply current. A model established under Matlab-Simulink software shows the performance of such approach.
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