【摘要】 风电机组基本自振周期在动力学分析和抗震分析中极为重要,由于统计数据数量少,目前相关研究尚未获得简单、准确的经验公式。有鉴于此,本文推导出近似理论公式,并依据63台风电机组实际数据,采用拟合分析的方法总结出3种包含不同参数的经验公式,并进行了误差评价。根据风电机组已知数据的详细程度,可选用相应的经验公式进行基本自振周期计算或者定性判断,为进一步的动力学分析和抗震分析提供参考。更多还原

【Abstract】 The fundamental natural period of wind turbines is extremely important in the dynamic and seismic analysis. At present, in the corresponding research, due to the limited statistical data, a simple and accurate empirical formula is not available yet. Therefore an approximate theoretical formula is derived here. Based on the statistical data of 63 wind turbines, by the method of fitting analysis, three types of empirical formulas with different parameters are obtained and evaluated. According to the data integrity of wind turbines, the corresponding empirical formula can be chosen to calculate the fundamental natural period or estimate it qualitatively, which provides a reference for the further dynamic and seismic analysis.更多还原