Power Output Test of 5kW Umbrella Wind Turbine

Abstract

The output power of the umbrella wind turbine is affected by tower shadow effect, stall, wind shear and other related factors. This paper introduced the composition and working principle of umbrella adjusting mechanism, analyzed the tower shadow effect of leeward wind turbine in the theory, and carried out the steady state wind experiment of the umbrella using wind tunnel. The experiment proved that the design of 5kW umbrella wind turbine and adjusting mechanism is reasonable and practical, the power characteristic curve is severely affected by the tower shadow effect when the contraction angle was 60°, and analyzed the causes of different power characteristic curve of the phenomenon; found the range of machine bevel power output characteristic curve of decay with the wind wheel angle of pinching at 50°~62°and the wind speed at 13.5m/s ~17m/s; put forward the increase of different number and shapes of guide plate in the vicinity of the umbrella assumption of wind turbine blades, thereby reducing the power attenuation phenomenon of umbrella under the influence of the power output to cope with complex climatic conditions. The experiment provides a good reference value for the design of the wind turbine. It also provides the theoretical and engineering application value for the research of wind power generation technology under complex climate conditions.