Power Quality Enhancement of AC/DC Converter by a Smart Direct Power Control: Practical Assessment

This study presents the smart control of the Pulse Width Modulation (PWM) AC/DC converter based on artificial intelligence technique which is the fuzzy logic. The converter switching state selection is based on a new decision table. The developed table is built by examining instantaneous the active and the reactive power correction. Moreover, two hysteresis comparators setting the active and the reactive power are substituted by a single fuzzy controller that adjusts both the active and the reactive power simultaneously. The objective of this paper is to mitigate the harmonics of the source currents and ensure a unitary power factor. The intelligent DPC scheme has been successfully applied in real time in order to test the practical usability of the modified approach. The simulation and practical results obtained confirm the efficiency and the superiority of the developed smart DPC control law in comparison to the classical DPC strategy.