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Price-Driven Coordination of Distributed Model Predictive Controllers: A Bi-Level Optimization Approach Open Access

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Other title
Subject/Keyword
Interior-point Method
Nonlinear Model Predictive Control
Bi-level Optimization
Price Coordination
Successive Linearization
Distributed Model Predictive Control
Trust-region Algorithm
Method of Feasible Directions
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Hassanzadeh, Bardia
Supervisor and department
Forbes, J. Fraser (Chemical and Materials Engineering)
Liu, Jinfeng (Chemical and Materials Engineering)
Examining committee member and department
Zhao, Qing (Electrical and Computer Engineering)
Dubljevic, Stevan (Chemical and Materials Engineering)
Liu, Jinfeng (Chemical and Materials Engineering)
Li, Xiang (Chemical Engineering, Queen's University)
Forbes, J. Fraser (Chemical and Materials Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Process Control
Date accepted
2015-06-05T15:54:37Z
Graduation date
2015-11
Degree
Doctor of Philosophy
Degree level
Doctoral
Abstract
Chemical and petrochemical plants typically integrate a number of geographically distributed operating units, which are physically linked through energy and material streams or inherently coupled via plant-wide constraints. The main drawback of the current decentralized control system is that it fails to consider the interrelations between subsystems, which could usually result in poor performance or even loss of closed-loop stability. Such concerns have motivated various control strategies to tackle these problems. One possibility is to replace the whole network with a centralized control structure. Despite the potential benefits, this renovation would require significant capital cost, increase maintenance costs, and reduce fault tolerance. Another practical approach is a distributed control that aims to improve the performance of a currently installed decentralized network. Distributed model predictive control (DMPC) methods are divide into two general categories: non-coordinated and coordinated schemes. Coordinated DMPC (CDMPC) networks, which consist of distributed controllers and a coordinator, are able to attain an overall optimal solution over a wide range of conditions. The focus of this thesis is to develop on-line strategies for CDMPC systems and overcome existing issues with global convergence and stability of closed-loop systems, under price-driven CDMPC concept. In particular, the main contributions are developing two novel information flow mechanisms for CDMPC of nonlinear systems and proposing a new solution method for CDMPC of linear systems, via a bi-level optimization framework.
Language
English
DOI
doi:10.7939/R3PZ51V45
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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