The design and test of a 1 kW umbrella wind turbine

Capacity control is a key technology to guarantee wind power system to run safely and steadily.The umbrella wind turbine is a new wind turbine with an umbrella shape capacity control system,it's fan blades can fold like an umbrella.When the wind speed exceeds the rated wind speed,the umbrella wind turbine can decrease it's swept area through change of the fan blade tilt angle.In this way,the power output fluctuates around the rated power.The later experiment also proves that the umbrella wind turbine can accommodate the power output well.The umbrella wind turbine not only has a relatively simple machinery,but also can adapt to changeable weather,it will has a bright prospect.