The Design Of Small Vertical Axis Wind Turbine System Based On Matlab/Simulink

Renewable energy has been drawing more attention since the advent of global wanning effect and the energy crisis. Many countries have already invested a lot in the project. Over the last decades, an increased percentage of the installations of the dispersed small-scaled generators such as wind generation systems have been operated effectively around the world. However, since the large horizontal axis wind turbine doesn't meet the small-scale demand well, small vertical axis wind turbine become more and more important.In this thesis, an effective simulation platform is built, focusing on small vertical axis wind turbine. In addition, we particularly pay attention to Savonius VAWT, a promised next-generation kernel part of wind-electricity power system.At the beginning of the thesis, we introduce the basic theory about wind-energy, the Savonius VAWT rotor and storage module which usually constructed by lead-acid battery. Then various mathematic models are raised into consideration, including wind speed, the Savonius wind turbine rotor, drive trains model, induction machine model, the electric power electron parts of wind power generation model and the energy storage model. Several important and illuminating parameters are obtained from the calculation. Further, a sim-system is built in Matlab/Simulink and Sim-Powersystems to confirm the feasibility of our discussion. The results have proved that a suitable working zone have been established for best effect and stability.Moreover, based on the balance of effect and environment, a super-capacitor module is designed to replace the traditional 12 V lead battery. Several key items of an integrated system are calculated, which has revealed the optimized module control, charging ability and output energy. As the super capacitor's capability develops, the module may replace traditional battery in some area practically.