Hybrid photovoltaic-fuel cell system with storage device control

This paper presents a control design for hybrid photovoltaic-fuel cell with a storage device (HPFCS). These stand-alone systems are used close to the load. The HPFCS is formed of a Fuel cell generator (FCG), a photovoltaic generator (PVG), a storage battery and a supervisor associated to a DC Bus. A control is conceived to manage power flows. Priority is given to PVG as it satisñes the load requirements. To balance the power a FCG is used when the power provided by PVG is not enough. The storage device is used to store the enough of power produced by PVG. The charge discharge process is optimized. The voltage regulation at the point of common coupling is an important issue in the connection of power PVG to the FCG and the storage devices interconnections. A fizzy supervisor is developed. In the other hand, a fizzy current controller is conceived in order to control the storage device and FCG currents.