Model Predictive Control Paradigms for Direct Contact Membrane Desalination Modeled by Differential Algebraic Equations
Type
Conference PaperKAUST 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
2019-11-25Permanent link to this record
http://hdl.handle.net/10754/660339
Metadata
Show full item recordAbstract
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.2019.8814797Sponsors
Research reported in this publication has been supported by the King Abdullah University of Science and Technology(KAUST).Conference/Event name
2019 American Control Conference (ACC)Additional Links
https://ieeexplore.ieee.org/document/8814797/ae974a485f413a2113503eed53cd6c53
10.23919/acc.2019.8814797