Application the P-Q Algorithm Method and Fuzzy Logic Controller by using a Multilevel Inverter as an Active Power Filter shunt

Abstract

This article presents two methods for the compensation of harmonics generated by a nonlinear load. The first is the P-Q algorithm method. The second is the controller by fuzzy logic. Both methods are applied to a Parallel Active Power Filter (Active Power Filter shunt - APFs) based on a three-phase voltage converter at five levels NPC topology. In calculating the harmonic currents of reference, we use the P-Q and pulse generation, we use the intersective PWM. For flexibility and dynamics, we use fuzzy logic. The results give us clear that the rate of Harmonic Distortion issued by fuzzy logic is better than P-Q algorithm