| 基于模态参数的在役风力发电机叶片损伤识别研究 |
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| 引用本文： | 顾永强,冯锦飞,张哲玮,田志昌,宫云龙. 基于模态参数的在役风力发电机叶片损伤识别研究[J]. 太阳能学报, 2022, 43(3): 350-355. DOI: 10.19912/j.0254-0096.tynxb.2020-0598 |
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| 作者姓名： | 顾永强 冯锦飞 张哲玮 田志昌 宫云龙 |
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| 作者单位： | 内蒙古科技大学土木工程学院,包头 014010 |
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| 基金项目： | 内蒙古自治区自然科学联合基金（2018LH05008）； |
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| 摘 要： | 通过对小型风力发电机叶片进行停转与运转状态下多种损伤工况的数值模拟,进行模态分析,以此研究叶片损伤识别与定位的方法,并提出加权柔度曲率指标,建立加权柔度曲率值与刚度损伤值的拟合函数.研究得到:首先通过自振频率的变化可判断叶片是否发生损伤;其次无论叶片是否发生损伤,随着叶片转速的增大,其固有频率都会增大.加权柔度曲率值在...
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| 关 键 词： | 风力发电机 叶片 数值模拟 模态分析 加权柔度曲率值 |
| 收稿时间： | 2020-06-27 |
RESEARCH ON BLADE DAMAGE IDENTIFICATION OF ACTIVE WIND TURBINE BASED ON MODAL PARAMETERS |
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| Gu Yongqiang,Feng Jinfei,Zhang Zhewei,Tian Zhichang,Gong Yunlong. RESEARCH ON BLADE DAMAGE IDENTIFICATION OF ACTIVE WIND TURBINE BASED ON MODAL PARAMETERS[J]. Acta Energiae Solaris Sinica, 2022, 43(3): 350-355. DOI: 10.19912/j.0254-0096.tynxb.2020-0598 |
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| Authors: | Gu Yongqiang Feng Jinfei Zhang Zhewei Tian Zhichang Gong Yunlong |
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| Affiliation: | College of Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China |
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| Abstract: | Based on the numerical simulation of various damage conditions of the small fan blades in the stalling and running states, the modal analysis was carried out to study the method to identify and locate the blade damage, and the author calculated the weighted flexibility curvature index to establish Fitting function of weighted flexibility curvature value and stiffness damage value. The results are as follows: firstly, whether the blade is damaged can be judged by the change of natural frequency. Secondly, regardless of the blade damage, as the blade speed increases, its natural frequency will increase. If the weighted flexibility curvature value mutates at the damage location, there will be a peak protrusion, and along with the increasing of the degree of damage, the peak protrusion becomes more obvious. At the same time, the fitting function proposed in this paper has minor errors and high reliability, which can locate the damage of the blade and quantify the degree of damage. |
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| Keywords: | wind turbines blades numerical simulation modal analysis weighted flexibility curvature value |
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