Simulation of solar-wind hybrid system model with maximum power point tracking (MPPT) algorithm for small-scale applications

Microgrids, in which consumers are stakeholders as well as energy producers, are developing as on-grid and off-grid. It is not sustainable to consider non-renewable energy sources in microgrids as the only energy source due to environmental pollution and increasing costs. In addition to conventional energy sources, hybrid energy systems consisting primarily of wind and solar energy will be critical secondary energy sources for microgrids. Thus, in cases such as power line faults, external disturbances, it will be possible for the network to work within itself and to work until it is reconnected to the main grid. In this study, a hybrid wind-photovoltaic system was first designed. Then, the developed system by designing different controllers for the variable speed wind turbine was analyzed for on-grid and off-grid situations. The developed hybrid energy system is controlled by PID, LQR and H-infinite controlling methods using the state space model in the microgrid. The results indicate that H-infinity gives the best performance in terms of speed and maximum power, comparing with other techniques.