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TOWARDS THE OPTIMAL OPERATION OF AN ORGANIC RANKINE CYCLE UNIT BY MEANS OF MODEL PREDICTIVE CONTROL Andres
Hernandez Naranjo, Jairo Andres; Desideri, Adriano; Ionescu, Clara et al.
2015In TOWARDS THE OPTIMAL OPERATION OF AN ORGANIC RANKINE CYCLE UNIT BY MEANS OF MODEL PREDICTIVE CONTROL
 

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Abstract :
[en] In this paper the optimal operation of an Organic Rankine Cycle (ORC) unit is investigated both in terms of energy production and safety conditions. Simulations on a validated dynamic model of a real re- generative ORC unit, are used to illustrate the existence of an optimal evaporating temperature which maximizes energy production for some given heat source conditions. This idea is further extended using a perturbation based Extremum Seeking (ES) algorithm to find online the optimal evaporating tempera- ture. Regarding safety conditions we propose the use of the Extended Prediction Self-Adaptive Control (EPSAC) approach to constrained Model Predictive Control (MPC). Since it uses input/output models for prediction, it avoids the need of state estimators, making of it a suitable tool for industrial applica- tions. The performance of the proposed control strategy is compared to PID-like schemes. Results show that EPSAC-MPC is a more effective control strategy as it allows a safer and more efficient operation of the ORC unit, as it can handle constraints in a natural way, operating close to the boundary conditions where power generation is maximized.
Disciplines :
Energy
Author, co-author :
Hernandez Naranjo, Jairo Andres ;  Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques
Desideri, Adriano ;  Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques
Ionescu, Clara;  Ghent University > Faculty of Applied Sciences - EeSA > Post-doc
Quoilin, Sylvain  ;  Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques
Lemort, Vincent  ;  Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques
De Keyser, Robin;  Ghent University > SYSTeMS > Professor
Language :
English
Title :
TOWARDS THE OPTIMAL OPERATION OF AN ORGANIC RANKINE CYCLE UNIT BY MEANS OF MODEL PREDICTIVE CONTROL Andres
Publication date :
14 October 2015
Event name :
3rd International Seminar on ORC Power Systems
Event place :
Brussles, Belgium
Event date :
from 12-10-2015 to 14-10-2015
Main work title :
TOWARDS THE OPTIMAL OPERATION OF AN ORGANIC RANKINE CYCLE UNIT BY MEANS OF MODEL PREDICTIVE CONTROL
Name of the research project :
The Next Generation Organic Rankine Cycles (www.orcnext.be),
Funders :
IWT SBO-110006
Available on ORBi :
since 10 June 2016

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