Author, as appears in the article.: Katir, Hanane; Abouloifa, Abdelmajid; Noussi, Karim; Lachkar, Ibtissam; El Aroudi, Abdelali; Aourir, Meriem; El Otmani, Fadwa; Giri, Fouad;

Department: Enginyeria Electrònica, Elèctrica i Automàtica

URV's Author/s: El Aroudi Chaoui, Abdelali

Keywords: Voltage regulators Voltage control Switches Regulators Photovoltaic energy Photovoltaic cells Nonlinear backstepping Multilevel inverters Mppt Maximum power point tracking controller (mppt) Maximum power point trackers Matlab Mathematical model Lyapunov tools Grid-connected photovoltaic system Fault tolerance Electric power factor Electric inverters Dc-dc converters Dc-dc boost converters Dc link voltage regulation Controllers Control systems Cascaded h-bridge multilevel inverters Cascaded h-bridge inverters Bridge circuits Backstepping control Backstepping Back-stepping controls

Abstract: This letter introduces a complete DC-AC conversion system fed by photovoltaic (PV) energy. The system consists of N PV panels, N DC-DC boost converters, N cascaded H-bridge inverters, a DC-link composed of N capacitors and an LCL filter. This work aims at reaching threefold control objectives: i) Extracting the available maximum power by regulating the voltages across the PV panels, ii) Ensuring a unitary power factor, iii) Regulating the DC-link voltage to a desired reference. To achieve the mentioned objectives, a multi-loop regulator is designed. The PV panels are individually controlled to track the maximum power point in order to efficiently operate at either the same or different varying climatic conditions without failures. In addition to the maximum power point tracking (MPPT) controller, two cascaded loops guaranteeing a satisfactory power factor and DC-link voltage regulation are developed. The nonlinear backstepping approach combined with Lyapunov theory are used based on the averaged model for the synthesis of the multi-loop controller. The performance of the studied system is tested via MATLAB / SimPowerSystems environment. The obtained simulation results prove that the proposed controller meets its objectives and demonstrate the efficiency of the chosen control strategy under faulty conditions.

Thematic Areas: Control and systems engineering Control and optimization Automation & control systems

licence for use: https://creativecommons.org/licenses/by/3.0/es/

Author's mail: abdelali.elaroudi@urv.cat

Author identifier: 0000-0001-9103-7762

Record's date: 2023-02-19

Papper version: info:eu-repo/semantics/acceptedVersion

Link to the original source: https://ieeexplore.ieee.org/document/9475528

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Ieee Control Systems Letters. 6 1406-1411

APA: Katir, Hanane; Abouloifa, Abdelmajid; Noussi, Karim; Lachkar, Ibtissam; El Aroudi, Abdelali; Aourir, Meriem; El Otmani, Fadwa; Giri, Fouad; (2022). Fault Tolerant Backstepping Control for Double-Stage Grid-Connected Photovoltaic Systems Using Cascaded H-Bridge Multilevel Inverters. Ieee Control Systems Letters, 6(), 1406-1411. DOI: 10.1109/LCSYS.2021.3095107

Article's DOI: 10.1109/LCSYS.2021.3095107

Entity: Universitat Rovira i Virgili

Journal publication year: 2022

Publication Type: Journal Publications