Fuzzy Logic Controller of Five Levels Active Power Filter

This paper presents five-level inverter as a shunt active power filter (SAPF) to compensate reactive power and suppresses harmonics drawn from a diode rectifier supplying RL load under distorted voltage conditions. The harmonic current extraction is based on the use of self tuning filter (STF) and fuzzy logic controller employed to control harmonic current and inverter DC voltage. The aim of the present work is to obtain a perfect compensation by extracting accurate harmonic currents to improve the performances of the five-levels active power filters. The proposed scheme is validated by computer simulation using MATLAB Fuzzy Logic Toolbox in order to show the effectiveness and ability of this method. The results have demonstrated that the proposed shunt active power filter with STF and Fuzzy Logic Controller (FLC) have produced a sinusoidal supply current with low harmonic distortion and in phase with the line voltage.

• shunt active power filter
• five-level inverter
• fuzzy logic controller
• self-tuning filter
• reactive power compensation
• diode rectifier
• RL load
• voltage distortion
• DC voltage control
• harmonic compensation

• Power Quality and Harmonics
• Multilevel Inverters and Converters
• Advanced Electrical Measurement Techniques
• shunt active power filter
• five-level inverter
• fuzzy logic controller
• self-tuning filter
• reactive power compensation
• diode rectifier
• RL load
• voltage distortion
• Electrical and Electronic Engineering
• Engineering