Optimal switching sequence model predictive control for three‐level NPC grid‐connected inverters
نویسندگان
چکیده
In order to concentrate the frequency spectrum of output voltage and improve quality grid currents for three-level neutral point clamped inverter with model predictive control, this paper proposes an optimal switching sequence control algorithm. Based on increments neutral-point voltage, is established in αβ frame. Moreover, including tracking, cost function designed simplified by arranging vector a sampling cycle appropriately. Meanwhile, calculation dwell time each derived Lagrange multiplier method, its solving process reduce online computations. Furthermore, according different sectors, preselection principle introduced paper, besides, considering redundant small vectors pair have opposite affections amount that needs be verified further cut down, obtaining sequence. Finally, experimental results show proposed method can spectrums, which maintains good fluctuation.
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ژورنال
عنوان ژورنال: Iet Power Electronics
سال: 2021
ISSN: ['1755-4535', '1755-4543']
DOI: https://doi.org/10.1049/pel2.12050