Abstract:The output power of the umbrella wind turbine is affected by tower shadow effect, stall, wind shear and other related factors.In the light of the speciality of its umbrella adjusting mode, we introduced the composition and working principle of the umbrella adjusting mechanism, analyzed the to-wer shadow effect of leeward wind turbine in the theory, and carried out the steady state wind experiment on the umbrella adjusting mechanism using wind tunnel.The experiment verified that the design of 5 kW umbrella wind turbine and the adjusting mechanism is reasonable and practical. The power characteristic curve was severely affected by the tower shadow effect when the pinch angle was 60°. We analyzed the causes of different power characteristic curves, finding the attenuation of the machine bevel power output characteristic curve at the wind wheel pinch of 50°-62° and the wind speed of 13.5 m/s-17.0 m/s. We put forward assumption of the increase of different numbers and shapes of guide plates in the vicinity of the umbrella wind turbine blades, thereby reducing the influence of the power attenuation on the power output for the umbrella wind turbine to cope with complex climatic conditions. The experiment provides a good reference for the design of the wind turbine and it is of the theoretical and engineering application value to the research on the wind power generation technology under complex climatic conditions.
包道日娜, 尚伟, 李恒, 张晓阳, 霍亚楠. 伞形风力机功率输出特性的试验研究[J]. 排灌机械工程学报, 2017, 35(6): 508-514.
BAO Daorina, SHANG Wei, LI Heng, ZHANG Xiaoyang, HUO Yanan. Experiment on power output characteristics of umbrella wind turbine. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(6): 508-514.
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