A novel self-adjustable robust MPPT strategy for two-stage grid-integrated solar PV systems
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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16
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Electrical Engineering
Abstract
Considering the significant investment in solar generation systems to improve the efficiency, numerous advanced and computation-based maximum power point tracking (MPPT) algorithms have been developed to achieve optimal convergence time, rapid steady-state and dynamic response, and enhanced tracking efficiency. This paper proposes a novel robust self-adaptive hill-climbing search (SA-HCS) algorithm based on optimal circular search zone for solar MPPT strategy. Initially, an open-circuit voltage estimation (OC-VE) strategy is proposed, followed by the implementation of the SA-HCS algorithm for a hybrid tracking approach. The proposed MPPT strategy uses large, variable, or adjustable step sizes, confirming efficient tracking by covering up to 90% of the search area bidirectionally. This is achieved by deploying an optimized circular curve synthesis, enabling rapid response. In the remaining search region, a small voltage step width is used to reduce steady-state oscillations near the maximum power point (MPP). The SA-HCS algorithm utilizes a universal circle equation to determine the appropriate perturbation step size based on the location of the operating power and OCV points, eliminating the need for prior-tuned perturbation step widths and calculations. The SA-HCS algorithm’s tracking performance is verified using MATLAB/Simulink, considering various solar irradiation conditions and real environmental data from the Benban Solar Park in Upper Egypt. As well, a comprehensive comparison with other counterpart HCS algorithms is investigated. Therefore, the proposed SA-HCS algorithm exhibits a minimal steady-state oscillations (1.2%), rapid settling time (12 ms), and excellent overall system efficiency (99.8%).Description
Publisher Copyright: © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.
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Youssef, A R, Mousa, H H H, Saeed, M S R, Ali, A, Shaaban, M F, Mohamed, E E M & Ali, A I M 2024, ' A novel self-adjustable robust MPPT strategy for two-stage grid-integrated solar PV systems ', Electrical Engineering . https://doi.org/10.1007/s00202-024-02858-y