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首页> 外文会议>Power Conference >BASIC DESIGN AND BLADE STRUCTURAL ANALYSIS OF A SMALL HORIZONTAL-AXIS WIND TURBINE FOR LOW WIND SPEEDS
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BASIC DESIGN AND BLADE STRUCTURAL ANALYSIS OF A SMALL HORIZONTAL-AXIS WIND TURBINE FOR LOW WIND SPEEDS

机译：小水平轴风风力涡轮机的基本设计与叶片结构分析，用于低风速

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摘要

The basic design and blade structural analysis of a 250 W rooftop-mounted horizontal-axis wind turbine for low wind speeds is presented. A simplified non-dimensional design is first undertaken to optimize the aerodynamic performance. The non-dimensional power curve us. the design tip speed ratio is computed with the open-source wind turbine design software QBlade. SD7062 airfoil is chosen for the blade section; and its aerodynamic efficiency is obtained for various angles of attack using XFLR5. The design process also gives the optimal chord length and pitch distribution, leading to the blade geometry. The 22-month weather data at the site has been analyzed to obtain the best-fit Weibull distribution. The blade sizing is based on the maximum power coefficient before the stall regulation happens. An attempt is made to enhance the power capture by using a concentrator, whose aerodynamic efficacy is analyzed. The blades are fabricated from Glass Fiber Reinforced Plastic, which reduces both weight and cost. The configuration for the laminate is finalized after several bending and tensile tests of five distinct GFRP samples. This is followed by the structural analysis of the blade. The root stresses and tip deflection are analyzed for extreme-wind conditions, along with the free vibration frequencies.
机译：提出了250 W屋顶安装水平轴风力涡轮机的基本设计和叶片结构分析，用于低风速。首先进行简化的非维度设计以优化空气动力学性能。我们的非维功率曲线。使用开源风力涡轮机设计软件QBlade计算设计尖端速度比。选择SD7062翼型为刀片部分选择;使用XFLR5获得各种攻击角度的空气动力学效率。设计过程还提供最佳的弦长和俯仰分布，导致叶片几何形状。已经分析了该网站的22个月的天气数据，以获得最适合的Weibull分布。叶片尺寸基于在失速调节发生之前的最大功率系数。尝试通过使用分析其空气动力学功效来增强功率捕获。刀片由玻璃纤维增​​强塑料制成，可减轻重量和成本。在五个不同GFRP样品的几种弯曲和拉伸试验之后，层压板的构造最终确定。接下来是刀片的结构分析。针对极端风力条件分析根部应力和尖端偏转，以及自由振动频率。

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