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基于统一变桨距控制的立轴风力机启动性能

, PP. 991-997

Keywords: 动力机械工程,立轴风力机,统一变桨距控制,启动性能

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Abstract:

为提高立轴风力机的启动能力,提出了适宜低尖速比运行的桨距角变化规律,并设计了一种变桨执行机构以实现多组叶片的统一变桨距控制。从变桨执行机构、翼型选择、风轮结构和控制系统等方面介绍样机设计原理,并进行了样机性能实验。结果表明:对称翼型厚度为15%时最佳,而非对称翼型的最大厚度不超过10.4%;实验数据与理论值变化趋势一致,理论值相比实验数据高出20%~30%;通过增加上盘面顺风区叶片迎风面积可以提高启动能力。

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