Design and pv-biogas hybrid micro-network optimization for isolated zones to electrical grid

This paper deals the electrification problems in African rural localities particularly in Malian localities. One solution is to develop the renewable energy sources due to their enormous resource which is inexhaustible and their production mode which preserves environment. To increase the energy production and to manage the intermit tent period of renewable resource, it will be interesting to combine divers renewable sources. In this hybridization of renewable energy sources context, the PV-Bio mass hybrid system becomes very interesting compared to others hybrid energy systems, due to his high flexibility and low dependency to meteorological conditions . These properties place the PV-Bio mass hybrid energy system as one of the bests systems in reliable and sustainable energy production for rural areas. In this study, we propose a PV-Bio mass hybrid energy system with energy storage to produce 100 % renewable energy and to preserve at the same time the environment . This hybrid system is studied under HOMER PRO software in order to identify the optimal configuration in terms of reliable energy production, sustainable and minimal cost over the hybrid system life cycle. The obtained results after simulation show that the optimal configuration is composed of a biogasgenerator of 100kW, a PV field of 160kWc and a battery park for reliable and sustainable energy production with a low cost over the life cycle of the hybrid energy system for Kolokani locality

Marine turbine system directly connected to electrical grid Experimental implementations using a nonlinear and robust control

This paper deals with real-time implementations of a nonlinear and robust control applied on a marine turbine system. For the experimental validation which uses real data from Raz de Sein site (Brittany, France), the DC motor drives a wound rotor synchronous generator. A computer pilots this DC motor in order to stand in for the marine turbine behavior. Experimental results show the control successful of both outputs (terminal voltage and speed) making possible direct connection to electrical grid. In addition, we verify the robustness properties of the complete system under hard mechanical and electrical perturbations. Finally, a comparative study highlight the proposed control performances compared with conventional AVR-PSS which is one of the most widely adopted controller in industry for electrical grid stabilization. © 2017 Elsevier Lt