Power management of a stand-alone wind/photovoltaic/fuel-cell energy system

Summary form only given. This paper proposes an ac-linked hybrid wind/photovoltaic (PV)/fuel-cell (FC) alternative energy system for stand-alone applications. Wind and PV are the primary power sources of the system, and a FC-electrolyzer combination is used as a backup and long term storage system. An overall power management strategy is designed for the proposed system to manage power flows among the different energy sources and the storage unit in the system. A simulation model for the hybrid energy system has been developed using MATLAB/Simulink. The system performance under different scenarios has been verified by carrying out simulation studies using a practical load demand profile and real weather data.