A Comparative Analysis of Cuk, SEPIC, and Zeta Converters as Maximum Power Point Trackers

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.