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首页> 外文期刊>IEEE Transactions on Energy Conversion >Power Output by Active Pitch-Regulated Wind Turbine in Presence of Short Duration Wind Variations
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Power Output by Active Pitch-Regulated Wind Turbine in Presence of Short Duration Wind Variations

机译：存在短时风速变化时主动变桨调节型风力发电机的功率输出

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摘要

The inexact power output from a pitch angle-controlled (PAC) horizontal-axis turbine, as influenced by short duration wind variations like turbulence and gusts, has been the subject of well-documented experimental and empirical studies. In this paper, an analytical interpretation of the phenomena is presented under assumption of two-parameter Weibull statistics for short duration wind variations. The popular concept of turbulence intensity is used as a parametric measure for randomness of wind speed. The formulations culminate in analytical expressions for two distinct metrics of power distortion, namely: (a) the short duration output power from the turbine as a mean distinct from corresponding ideal zero-turbulence value; and (b) the output power variability as a quantification of randomness around the mean. Estimates of both metrics are presented for operating conditions in accordance with the well-known IEC 61400-1 standards. Trends indicated by computed estimates are found to be consistent with empirically observed data from field studies that are reported in the literature.
机译：俯仰角控制（PAC）水平轴涡轮机输出的功率不精确，受到短时风速变化（如湍流和阵风）的影响，已经成为有据可查的实验和经验研究的对象。在本文中，在短时风变化的两参数威布尔统计假设下，对该现象进行了解析解释。流行的湍流强度概念被用作风速随机性的参数度量。这些公式最终以两种不同的功率失真度量的解析表达式表示出来：（a）涡轮机的短期输出功率，其平均值不同于相应的理想零湍流值； （b）输出功率的可变性，以量化均值附近的随机性。根据众所周知的IEC 61400-1标准，给出了两种测量条件的估计值，以用于工作条件。发现由计算得出的估计值指示的趋势与文献报道的实地研究的经验观察数据一致。

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