Abstract
In this paper, an intelligent control of the single-phase shunt active filter (SP-SAF) for power quality improvement is proposed. The developed approach is essentially composed of two controllers based on the fuzzy logic theory. The first fuzzy proportional derivative (PD) controller with integral (I) action replacing the standard PI regulator, intervenes in the DC voltage regulation loop of the depollution device. In addition, it effectively participates in the delivery of the reference source current. The second controller represented by a fuzzy hysteresis regulator ensures better control of the filter current. Moreover, it acts as an intelligent governance decision maker of the (DC/AC) converter constituting the filtering system. The strategy offers a source current of sinusoidal shape respecting the imposed international standards and the operation of the treated system under a power factor very close to unity. The effectiveness of the new proposed control strategy has been tested through MATLAB/Simulink software and practically validated via the dSPACE 1104 card under various operating conditions. Finally, the experimental results show that the proposed control paradigm outperformed the existing control schemes.