Interval Type 2 Fuzzy-Logic-Based Solar Power MPPT Algorithm Connected to AC Grid

Amel Abbadi, Fethia Hamidia, Abdelkader Morsli, Habiba Bellatrache, Djamel Boukhetala and Lazhari Nazli
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Amel Abbadi: university of medea, Medea, Algeria
Fethia Hamidia: university of medea, Medea, Algeria
Abdelkader Morsli: university of medea, Medea, Algeria
Habiba Bellatrache: Electronic Engineering Department University of Saad Dahlab, Blida1, Algeria
Djamel Boukhetala: Laboratoire de Commande des Processus, Département d'Automatique, École Nationale Polytechnique, El Harrach, Algeria
Lazhari Nazli: Laboratoire de Commande des Processus, Département d'Automatique, École Nationale Polytechnique, El Harrach, Algeria

International Journal of Energy Optimization and Engineering (IJEOE), 2020, vol. 9, issue 1, 110-121

Abstract: In this article, an interval type-2 fuzzy logic controller (IT2FLC) is used as a Maximum Power Point Tracker (MPPT) to supply a large scale interconnected grid. The IT2FLC has the advantage of being able to regulate the MPP in case of severe variations of the weather conditions. A photovoltaic array is connected to AC grid via a DC-DC boost converter and a three-phase three-level Voltage Source Converter (VSC). The duty cycle of the boost converter is switched by the IT2FLC. A three phase VSC converts the VDC link voltage to AC and keeps unity power factor. The VSC control system uses two control loops: an external control loop which regulates DC link voltage to alternative current and an internal control loop which regulates the active and the reactive grid currents. Vd and Vq voltage outputs of the current controller are converted to three modulating signals used by the PWM Generator.

Date: 2020
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