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Flatness-Based Control for the Maximum Power Point Tracking in a Photovoltaic System

Faculty of Engineering, Autonomous University of the State of Mexico, Instituto Literario No. 100 Oriente, Toluca 50130, Estado de México, Mexico
Tecnológico de Estudios Superiores de Jocotitlán Carretera Toluca-Atlacomulco km. 44.8, Jocotitlán 50700, Estado de México, Mexico
Cátedras CONACYT, Av. Insurgentes Sur 1582, Col. Crédito Constructor, Alcaldía Benito Juárez, Ciudad de México 03940, Mexico
School of Sciencies, UASLP, San Luis Potosi 78290, SLP, Mexico
Authors to whom correspondence should be addressed.
Energies 2019, 12(10), 1843;
Received: 30 March 2019 / Revised: 6 May 2019 / Accepted: 10 May 2019 / Published: 15 May 2019
(This article belongs to the Special Issue Design and Control of Power Converters 2019)
Solar energy harvesting using Photovoltaic (PV) systems is one of the most popular sources of renewable energy, however the main drawback of PV systems is their low conversion efficiency. An optimal system operation requires an efficient tracking of the Maximum Power Point (MPP), which represents the maximum energy that can be extracted from the PV panel. This paper presents a novel control approach for the Maximum Power Point Tracking (MPPT) based on the differential flatness property of the Boost converter, which is one of the most used converters in PV systems. The underlying idea of the proposed control approach is to use the classical flatness-based trajectory tracking control where a reference voltage will be defined in terms of the maximum power provided by the PV panel. The effectiveness of the proposed controller is assessed through numerical simulations and experimental tests. The results show that the controller based on differential flatness is capable of converging in less than 0.15 s and, compared with other MPPT techniques, such as Incremental Conductance and Perturb and Observe, it improves the response against sudden changes in load or weather conditions, reducing the ringing in the output of the system. Based on the results, it can be inferred that the new flatness-based controller represents an alternative to improve the MPPT in PV systems, especially when they are subject to sudden load or weather changes. View Full-Text
Keywords: MPPT; differential flatness; nonlinear control MPPT; differential flatness; nonlinear control
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MDPI and ACS Style

Gil-Antonio, L.; Saldivar, B.; Portillo-Rodríguez, O.; Ávila-Vilchis, J.C.; Martínez-Rodríguez, P.R.; Martínez-Méndez, R. Flatness-Based Control for the Maximum Power Point Tracking in a Photovoltaic System. Energies 2019, 12, 1843.

AMA Style

Gil-Antonio L, Saldivar B, Portillo-Rodríguez O, Ávila-Vilchis JC, Martínez-Rodríguez PR, Martínez-Méndez R. Flatness-Based Control for the Maximum Power Point Tracking in a Photovoltaic System. Energies. 2019; 12(10):1843.

Chicago/Turabian Style

Gil-Antonio, Leopoldo, Belem Saldivar, Otniel Portillo-Rodríguez, Juan C. Ávila-Vilchis, Pánfilo R. Martínez-Rodríguez, and Rigoberto Martínez-Méndez. 2019. "Flatness-Based Control for the Maximum Power Point Tracking in a Photovoltaic System" Energies 12, no. 10: 1843.

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