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    A Comparative Analysis of Cuk, SEPIC, and Zeta Converters as Maximum Power Point Trackers
    (Institute of Electrical and Electronics Engineers Inc., 2024) Hadji, Slimane; Belkaid, Abdelhakim; Kayışlı, Korhan; Çolak, ilhami; Aissou, Said; Lylia Larbi
    Currently, one of the main challenges of solar photovoltaic (PV) systems is to optimize their energy efficiency. Solar panels and dc-dc converters controlled by maximum power point tracking (MPPT) techniques are the two main components of a PV system.To optimize the production of the PV installation, the converter holds pivotal significance. Given its direct impact on the overall performance of the PV system, selecting the appropriate DC-DC converter becomes imperative.This study meticulously compares a variety of non-isolated power converters, encompassing Zeta, SEPIC and Cuk configurations.The input capacitors have been perfectly integrated in all converters, to filter voltage ripple and current ripple. The control of these converters was achieved through the implementation of an incremental conductance algorithm (InCon), improving efficiency and precision. In addition, a meticulously selected irradiation profile was used, to thoroughly test the effectiveness of the system.Our research findings underscore the SEPIC converter's consistent outperformance, showcasing an unparalleled tracking efficiency of 99.01% compared to its counterparts. © 2024 IEEE.
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    High Gain Voltage SEPIC Converter for PV System
    (Institute of Electrical and Electronics Engineers Inc., 2024) Hadji, Slimane; Belkaid, Abdelhakim; Larbi, Lylia; Çolak, İlhami; Kayışlı, Korhan; Aissou, Said
    The main objective of this paper is to propose a modified structure for a SEPIC-type DC-DC converter and to compare it to the simple structure. An incremental conductance (INC) MPPT controller is chosen and applied to both converters in order to extract the maximum available power. The modified converter structure is obtained by adding an inductor and a capacitor to the conventional converter. With this new structure, we go from a step-up/down converter to only a step-up converter. Simulation results, with Matlab/Simulink, illustrate better performances with the modified structure compared to the classical SEPIC structure, less output power oscillation and high voltage gain are guaranteed. © 2024 IEEE.