| Summary: | 碩士 === 國立虎尾科技大學 === 航空與電子科技研究所 === 101 === Wind energy is a clean,environmentally friendly renewable energy,However, there are still many shortcomings so that wind power there are still many shortcomings so that wind power could not become the main source of energy. One of the major shortcomings of the wind instability. In addition, the instability of wind power also makes the inverter system more complex. For the small wind turbine system, the disturbance is more obvious.
This study focuses on the effect of the vertical axis wind turbine. Vertical axis wind turbine can start to generate power at the low wind speed. Its simple structure, easy maintenance, low aerodynamic noise and the concerns of the non-directional, with the development of the potential and advantages of low electricity demand applications.
The primary considerations in the design and manufacturing the Wind turbine rotor and blade system is weight. The lighter weight of the rotor and blade system is usually easy to start in the low wind speed. However, the light weight of the rotor/blade system is more sensitiveto the change of wind speed, that makes the wind turbine output power becomes unstable. This study concludes that the the heavier rotor and blade system, could increase the moment of inertia of the wind turbine, which is helpful for the stability of the wind turbine output power.
In this study, the rotor system of vertical axis wind turbine is fnction as traditional mechanical flywheel, the rotational kinetic energy of the flywheel as an energy storage and buffering device. The CFD software are used to simulate in different wind speed and blade weight. The system can cumulates more power with a little bit heavier rotor system, and therefore, provide a reference for future optimal vertical axis wind turbine rotor system design.
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