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    Model Predictive Control Paradigms for Direct Contact Membrane Desalination Modeled by Differential Algebraic Equations

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    Type
    Conference Paper
    Authors
    Guo, Xingang cc
    Albalawi, Fahad
    Laleg-Kirati, Taous-Meriem cc
    KAUST Department
    Computational Bioscience Research Center (CBRC)
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering
    Electrical Engineering Program
    Estimation, Modeling and ANalysis Group
    Date
    2019-11-25
    Permanent link to this record
    http://hdl.handle.net/10754/660339
    
    Metadata
    Show full item record
    Abstract
    Direct Contact Membrane Distillation (DCMD) is an emerging sustainable desalination technology that can utilize solar energy to desalinate seawater. The low water production rate associated with this technology prevents it from becoming commercially feasible. To overcome this challenge, advanced control strategies may be utilized. An optimization-based control scheme termed Model Predictive Control (MPC) provides a natural framework to optimally operate DCMD processes due to its unique control advantages. Among these advantages are the flexibility provided in formulating the objective function, the capability to directly handle process constraints, and the ability to work with various classes of nonlinear systems. Motivated by the above considerations, this paper proposes two MPC schemes that can maximize the water production rate of DCMD systems. The first MPC scheme is formulated to track an optimal set-point while taking input and stability constraints into account. The second MPC scheme termed Economic Model Predictive Control (EMPC) is formulated to maximize the distilled water flux while meeting input, stability and other process operational constraints. To illustrate the effectiveness of the two proposed control paradigms, the total water production under both control designs is compared. Simulation results show that the DCMD process produces more distilled water when it is operated by EMPC than when it is operated by MPC.
    Citation
    Guo, X., Albalawi, F., & Laleg, M. (2019). Model Predictive Control Paradigms for Direct Contact Membrane Desalination Modeled by Differential Algebraic Equations. 2019 American Control Conference (ACC). doi:10.23919/acc.2019.8814797
    Sponsors
    Research reported in this publication has been supported by the King Abdullah University of Science and Technology(KAUST).
    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Conference/Event name
    2019 American Control Conference (ACC)
    DOI
    10.23919/acc.2019.8814797
    Additional Links
    https://ieeexplore.ieee.org/document/8814797/
    ae974a485f413a2113503eed53cd6c53
    10.23919/acc.2019.8814797
    Scopus Count
    Collections
    Conference Papers; Electrical and Computer Engineering Program; Computational Bioscience Research Center (CBRC); Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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