A Comparison between MPC and PI Controllers Acting on a Refrigerated Gas Plant

Yusoff, Nooryusmiza and Ramasamy , Marappagounder (2009) A Comparison between MPC and PI Controllers Acting on a Refrigerated Gas Plant. In: International Conference on Control, Instrumentation and Mechatronic Engineering (CIM09).

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A refrigerated gas plant (RGP) produces sales gas (SG), which is the preferred fuel of many power plants due to economic and environmental factors. Sustaining the SG production at an optimum cost is crucial to the RGP given the operational challenges. These challenges may be alleviated by adopting a model predictive control (MPC) scheme in replacement of the current proportional-integral (PI) control scheme. In this work, a 2x2 constrained MPC scheme was developed. The process dynamics were approximated by first-order-plus-time-delay (FOPTD) models. The performance of the MPC scheme is compared with the decentralized PI control scheme in set point tracking. Although PI controllers seem to perform better than MPC controller, this is achieved at a higher operating cost and hence reducing the RGP profit margin.

Item Type:Conference or Workshop Item (Paper)
Subjects:T Technology > T Technology (General)
T Technology > TP Chemical technology
Academic Subject One:Model predictive control
Departments / MOR / COE:Departments > Chemical Engineering
Research Institutes > Energy
ID Code:6167
Deposited By: Dr. Nooryusmiza Yusoff
Deposited On:16 Dec 2013 23:48
Last Modified:19 Jan 2017 08:25

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