Hybrid control of a photovoltaic-hydrogen energy system

TitleHybrid control of a photovoltaic-hydrogen energy system
Publication TypeJournal Article
Year of Publication2008
AuthorsGarcía-Clúa JG, Mantz RJ, De Battista H
JournalInt J Hydrogen Energy
Pagination3455 - 3459

This paper concerns the control of an autonomous hydrogen production system basically consisting in a solar panel array supplying an alkaline electrolyzer. Following the current tendency of eliminating component duplication, these devices are not connected—with dedicated power electronics—to a common DC bus, but directly through a single DC–DC converter. This converter is aimed at adjusting the output voltages of the solar array and electrolyzer in order to maximize hydrogen production. To this end, a controller is proposed that meets the maximum power capture objective for the solar array and the power constraints of the electrolyzer. The controller is designed using concepts of hybrid control theory, which is very powerful to cope with the nonlinear and hybrid dynamics inherent to the system behavior. This hybrid approach provides simple design tools and allows a straightforward analysis of global stability properties.

Research Line: 
Control de sistemas de conversión de energías renovables
Control of renewable energy systems
Control of hybrid renewable systems and their integration to the grid
Control de sistemas híbridos de energías renovables y su integración a la red