叶片数对VAWT-SWS低风速自起动性能的影响 |
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引用本文: | 曲建俊,许明伟,梅毅,李岩. 叶片数对VAWT-SWS低风速自起动性能的影响[J]. 农业机械学报, 2014, 45(5): 173-178 |
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作者姓名: | 曲建俊 许明伟 梅毅 李岩 |
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作者单位: | 哈尔滨工业大学;哈尔滨工业大学;哈尔滨工业大学;东北农业大学 |
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基金项目: | 国家自然科学基金资助项目(51175104) |
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摘 要: | 为探明叶片数对自适应风速垂直轴风力机(VAWT-SWS)自起动性能的影响,设计了可更换叶片个数(2,3,4)的风力机模型,通过风洞实验获得了3 m/s风速下风力机的静态转矩系数随方位角变化曲线,并与相同参数的Darrieus直叶片风力机(D-风力机)进行了对比。之后使自适应风速垂直轴风力机空载,得到了3 m/s风速下其转速随时间变化曲线。实验结果表明:自适应风速垂直轴风力机的自起动性能优于Darrieus直叶片风力机,增加叶片数可使自适应风速垂直轴风力机的静态自起动性能提高,但使动态自起动性能降低。
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关 键 词: | 垂直轴风力机 自适应风速 自起动性能 转矩 风洞实验 |
收稿时间: | 2013-05-14 |
Effects of Blade Number on Self-starting Performance of Vertical Axis Wind Turbine with Self-adapting Wind Speed under Low Wind Speed |
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Affiliation: | Harbin Institute of Technology;Harbin Institute of Technology;Harbin Institute of Technology;Northeast Agricultural University |
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Abstract: | With the aim to investigate the influences of blade number on the self-starting performance of vertical axis wind turbine with self-adapting wind speed (VAWT-SWS), a prototype which could change the number of blades (2,3,4) was designed. Through the wind tunnel experiment the static torque coefficient curve with azimuth angle at a wind speed of 3m/s was obtained, and compared experiments were done on Darrieus straight-bladed wind turbine with the same parameters. Then the load of VAWT-SWS was released, and rotation speed curve of VAWT-SWS changing with time at 3m/s was gotten. The experimental results showed that the self-starting performance of VAWT-SWS was superior to that of Darrieus straight-bladed wind turbine; the increase of blade number could improve the static self-starting performance of VAWT-SWS, but degraded the dynamic self-starting performance. |
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Keywords: | Vertical axis wind turbine Self-adapting wind speed Self-starting performance Torque Wind tunnel experiment |
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