2010
EMSS 2010 Proceeding
Fault-tolerant supervisory control of a reverse osmosis desalination plant powered by renewable energies
Authors: Adrian Gambier, Tobias Miksch, Essameddin Badreddin
Abstract
Many applications of Reverse Osmosis desalination plants (RO plants) require a fault tolerant system, in particular when human life depends on the availability of the plant for producing fresh water. However, they have been little studied in the literature from this point of view, in particular, when the plant is powered by renewable energies. In this case, the availability of the power supply is limited and depending on weather conditions. Therefore, the plant has to be able to work at different operating point and hence, fault tolerance becomes essential. The present work reports a study, in the framework of the European project Open Gain, on Fault-Tolerant Control (FTC) of a RO plant powered by renewable energies. The approach is based on optimized PID control loops in the lowest control level and a Model Predictive Control (MPC) as supervisory controller. The MPC pro- vides fault tolerance by using a prioritized lexicographic algorithm.
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