Self tunning filter for three levels four legs shunt active power filter with fuzzy logic controller

Dahmane Djendaoui; Amar Benaissa; Boualaga  Rabhi; Laid  Zellouma

doi:10.14311/AP.2021.61.0415

Authors

Dahmane Djendaoui University of Biskra, Electrical Engineering Department, BP 145 RP, 07000 Biskra, Algeria
Amar Benaissa University of Djelfa, LAADI Laboratory,PB 3117, 17000 Djelfa, Algeria
Boualaga Rabhi University of Biskra, LMSE Laboratory, BP 145 RP, 07000 Biskra, Algeria
Laid Zellouma University of El-Oued, LEVRES Laboratory, BP 789, 39000 El-Oued, Algeria

DOI:

https://doi.org/10.14311/AP.2021.61.0415

Keywords:

4-leg shunt active filter, harmonics isolator, distorted voltage conditions, self-tuning filter, fuzzy logic control.

Abstract

The low harmonic distortion and reduced switching losses are the advantages of using the multilevel inverter. For this purpose, the three-level inverter is used in this paper as a three-phase four-leg shunt active power filter (SAPF). The SAPF is used to eliminate the harmonic current to compensate the reactive power current, and to balance the load currents under an unbalanced non-linear load. A fuzzy logic controller and self-tuning filters (STF) are used to control the active power filter (APF) and generate the reference current. To demonstrate the validity of the proposed control strategy, we compared it with a conventional p − q theory, under distortion voltage conditions and unbalanced non-linear load. The Matlab-Simulink toolbox is used to implement the algorithm of Fuzzy logic control. The performance of the SAPF controller is found very effective and adequate as compared with the p − q theory.

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