Majlesi Journal of Electrical Engineering Buck-Based Photovoltaic Microinverter Coupled to a Discharge Circuit Volume 18 (2024) Issue 1, March 2024 2024 04 21 Buck-Based Photovoltaic Microinverter Coupled to a Discharge Circuit 10.30486/mjee.2024.1992377.1189 EN Mohammed El Bachir Ghribi Applied Power Electronics Laboratory (LEPA), University of science and technology of Oran Mohamed Boudiaf, Oran, Algeria. 0009-0006-0382-4613 Zine Eddine Touhami Ternifi Laboratory of sustainable development of the electrical energy (LDDEE), University of science and technology of Oran Mohamed Boudiaf, Oran, Algeria. 0000-0002-1860-1643 Ghalem Bachir Laboratory of sustainable development of the electrical energy (LDDEE), University of science and technology of Oran Mohamed Boudiaf, Oran, Algeria. 0000-0002-3075-743X Michel Aillerie Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), Université de Lorraine, CentraleSupélec, F-57000 Metz, France. 0000-0002-6998-2415 Journal Article 2024 04 21 The aim of this paper is to introduce a novel microinverter design that is based on the DC/DC converter, Buck. This structure is intended to provide a sinusoidal voltage to low-power autonomous loads embedded in vehicles, which require excellent waveform quality. In the first part, the paper presents the new topology, its modeling, and the control strategies employed. Two control strategies are discussed, including the classical control with a PI regulator and the sliding mode control with the step function. The dimensioning is carried out using the Ziegler-Nichols method, and the stability is ensured using the Lyapunov method. In the second part, the paper comments on the results obtained from different simulations in terms of harmonic distortion (THD), efficiency and control robustness with different sources, such as battery and photovoltaic panel.