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Evaluating the Aerodynamic Performance of Small Horizontal Axis Wind Turbines

机译:小型水平轴风力发电机的空气动力性能评估

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A power performance field test campaign has been run on a 2.4 kW rated small horizontal axis wind turbine. The wind-electric system has been instrumented with power and meteorological sensors with the goal of developing a field-test facility with the capability of performing comprehensive power production and rotor aerodynamics studies. A power curve has been resolved for the wind turbine using the method of bins and filtering data based on the environmental characteristics of the test site. Field test results agree well with similar data campaigns available through the Small Wind Certification Council and the turbine manufacturer. Comparisons are made between various averaging intervals (30-sec and 60-sec) along with an assessment of how differing averaging intervals change correlation between power and meteorological metrics. Some insight into how obstructions at the test site affect data correlation and the "bin method" analysis are given. WT_Perf was used to produce computational performance predictions for the wind turbine rotor. Comparisons between WT_Perf and field test data show reasonable agreement between the data sets when analyzing the operational wind speed and rotational speed envelopes of the wind turbine.
机译:功率性能现场测试活动已在额定功率为2.4 kW的小型水平轴风力涡轮机上进行。风力发电系统已配备功率和气象传感器,目的是开发一种现场测试设施,该能力能够进行全面的动力产生和转子空气动力学研究。风力发电设备的功率曲线已使用分箱方法进行了解析,并根据测试地点的环境特征对数据进行了过滤。现场测试结果与小型风力认证委员会和风机制造商提供的类似数据非常吻合。在各种平均间隔(30秒和60秒)之间进行比较,并评估不同的平均间隔如何改变功率和气象指标之间的相关性。给出了一些关于测试站点的障碍物如何影响数据相关性的见解,并提供了“ bin方法”分析。 WT_Perf用于生成风力涡轮机转子的计算性能预测。 WT_Perf和现场测试数据之间的比较表明,在分析风力涡轮机的运行风速和转速包络线时,数据集之间存在合理的一致性。

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