Commande tolérante aux défauts des processus énergétiques
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Date
2018-06-12
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Abstract
This work deals with the control of energy systems subject to faults. The objective is to
accommodate faults by the design of a control law that takes into account the existence of
internal faults and dysfunctions caused by external environment.
Energy systems are characterized by the dependence of their performance on energy
efficiency, the total efficiency is the result of the operation of elementary energy processes
to verify the final objective which is the production of energy in its final form. The
supervision of these processes and tolerance to faults allow the improvement of individual
performances and the achievement of global efficiency at a lower cost.
In this context, renewable energy conversion processes are characterized by the aspect of
their dependence on climatic conditions and direct exposure to outdoor environment,
resulting in the occurrence of different types of faults and dysfunctions. Solar photovoltaic
renewable energy generation systems are considered in this work as they dominate
renewable electricity capacity expansion. The study of the effect of various abnormal
events and degraded operating modes of solar photovoltaic systems is performed and a
fault-tolerant control law is proposed to enhance the efficiency of these energy processes.
A reconfiguration of controller is designed to switch between an improved current-based
particle swarm optimization technique and the incremental conductance algorithm.
Practical implementation of the proposed approach shows excellent performance in real
operating conditions when compared to traditional maximum power point algorithms.