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A classical wind energy conversion system is usually a passive generator. Its power does not depend on the grid requirement, but entirely on the fluctuant wind condition. In this paper a DC-coupled wind/hydrogen/super-capacitor hybrid power system is studied. The purpose of the control system is to coordinate these different sources, especially their power exchange, in order to make the generated...
A hybrid power system with a PV energy conversion system is proposed with lead-acid batteries based long-term storage units and ultracapacitors based fast-dynamic storage units in a DC-coupled structure. It is necessary and important to manage the powers among those different power sources. A power management algorithm is proposed for this hybrid power system by taking into account the characteristics...
In this paper a graphical modelling tool is proposed to develop a fuzzy logic based supervisor. This tool facilitates the analysis and the determination of fuzzy control algorithms adapted to complex hybrid systems. To explain this methodology, the association of wind generators, dispersed generator and storage systems are considered. The performance of this supervisor is shown with the help of simulations...
A hybrid power system is proposed and is based on wind energy conversion system with hydrogen based long-term storage unit and super-capacitor based fast-dynamic storage unit. A power management algorithm is organized in different time scales for its normal operating mode. Four studied cases show that, the long-term storage can compensate or absorb the difference between the generated fluctuating...
In this paper, we propose a grid-connected photovoltaic power system including batteries in order to provide prescribed reactive and real powers to the grid. According to the stochastic nature of the photovoltaic power, the main feature of the proposed system is to erase power fluctuations by designing a dedicated local control system. With batteries, the whole system is able to smooth the PV power...
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