(Enhancement of Grid Connected Variable Speed Direct-Drive PMSG-Based Wind Energy Conversion System (WECS) through integration of Flywheel Energy Storage System (FESS

Abstract

This thesis presents a study of improving grid connected wind energy conversion systems through the integration with flywheel energy storage systems. The study has shown the effectiveness of flywheel system to control the grid active and reactive power simultaneously, while extracting the maximum power from the wind generator considering a variable wind speed profile. Also, the study has proved the ability of the flywheel system to enhance the low voltage ride-through capabilities of the wind generator. MATLAB / SIMULINK models have been conducted showing the different integration topologies between the wind and flywheel systems. Finally, the study presents recommendations for the convenient integration topology based on the performance required from the integrated system