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K-Best Sphere Decoding Algorithm for Long Prediction Horizon FCS-MPC.

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Název: K-Best Sphere Decoding Algorithm for Long Prediction Horizon FCS-MPC.
Autoři: ZafraRatia, Eduardo, Vazquez, Sergio, Marquez Alcaide, Abraham, Franquelo, Leopoldo, Leon, Jose I., Perez Martin, Emilia
Zdroj: IEEE Transactions on Industrial Electronics; Aug2022, Vol. 69 Issue 8, p7571-7581, 11p
Témata: DECODING algorithms, UNINTERRUPTIBLE power supply, HORIZON, SPHERES, FORECASTING, PREDICTION models
Abstrakt: Finite control set model predictive control (FCS-MPC) strategies for power conversion devices benefit from extending the prediction horizon length. Solving this problem relies on the definition of the underlying integer least-squares problem. Sphere decoding algorithm (SDA) has been extensively used in previous works as an approach to solve this problem. In this article, a parallel and fully scalable K-best SDA hardware design is proposed as an alternative. The K-best SDA establishes a different breadth-first search strategy, which addresses some of the main drawbacks of the SDA. Through experimental tests based on an uninterruptible power supply, the K-best SDA performance for long prediction horizon FCS-MPC is assessed and verified. Results demonstrate key beneficial aspects through which the K-best SDA is capable of rendering an improved control performance when compared to the conventional SDA. [ABSTRACT FROM AUTHOR]
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Databáze: Complementary Index
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Abstrakt:Finite control set model predictive control (FCS-MPC) strategies for power conversion devices benefit from extending the prediction horizon length. Solving this problem relies on the definition of the underlying integer least-squares problem. Sphere decoding algorithm (SDA) has been extensively used in previous works as an approach to solve this problem. In this article, a parallel and fully scalable K-best SDA hardware design is proposed as an alternative. The K-best SDA establishes a different breadth-first search strategy, which addresses some of the main drawbacks of the SDA. Through experimental tests based on an uninterruptible power supply, the K-best SDA performance for long prediction horizon FCS-MPC is assessed and verified. Results demonstrate key beneficial aspects through which the K-best SDA is capable of rendering an improved control performance when compared to the conventional SDA. [ABSTRACT FROM AUTHOR]
ISSN:02780046
DOI:10.1109/TIE.2021.3104600