Energetic study of a series active conditioner compensating voltage dips, unbalanced voltage and voltage harmonics

This paper deals with the main perturbations such as voltage harmonic pollution, voltage unbalance and voltage sag in electrical systems. The series active conditioner is able to compensate these voltages on the customer side or on the sub-transmission side, leaving the fundamental voltage in the load terminals. Two control approaches (PI, RST) have been studied to ensure the regulation of the output voltage filter. An advanced RST corrector has been developed. Two methods of the disturbance identification have been proposed and compared. In this paper, through the simulations made by SABER numerical code, an energetic study is presented when the compensation of one or a combination of these voltages is aimed at. A power rating comparison has also been performed between the case with PLL and without PLL.