| 基于GL规范对兆瓦级风力发电机组机架的分析计算 |
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| 引用本文： | 杨兆忠,颜志伟,晏红文.基于GL规范对兆瓦级风力发电机组机架的分析计算[J].机械设计与制造,2011(9). |
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| 作者姓名： | 杨兆忠 颜志伟 晏红文 |
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| 作者单位： | 南车株洲电力机车研究所有限公司风电事业部,株洲,421000 |
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| 摘 要： | 对机架的分析计算包括极限强度分析、疲劳强度分析和模态分析。由于机架的结构和承受的载荷复杂,利用有限元方法对兆瓦级风力发电机组机架进行极限强度分析。根据GL规范和EC3(1~9)等标准,对焊接结构的机架利用差值外推得到焊址处在单位载荷下的应力。对作用在机架上的疲劳载荷普,通过通道合并和雨流统计得到焊址处的等效疲劳应力,并结合GL规范进行疲劳损伤判断。使用有限元法计算了机架的固有频率,防止风机工作中机架在其它振源激励下发生共振。
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| 关 键 词： | 风力发电机 机架 有限元 强度 |
Analysis and computation for mainframe of MW class wind turbine generator system based on GL guideline |
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| YANG Zhao-zhong,YAN Zhi-wei,YAN Hong-wen.Analysis and computation for mainframe of MW class wind turbine generator system based on GL guideline[J].Machinery Design & Manufacture,2011(9). |
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| Authors: | YANG Zhao-zhong YAN Zhi-wei YAN Hong-wen |
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| Affiliation: | YANG Zhao-zhong,YAN Zhi-wei,YAN Hong-wen (CSR Zhuzhou Electric Locomotive Research Institute Co.,Ltd.,Wind Power Business Unit,Zhuzhou 421000,China) |
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| Abstract: | The analysis and computation for mainframe include ultimate strength analysis,fatigue analysis and modal analysis.Since the rack structure and bearing load is complicated,FEA is applied for analyzing ultimate strength of wind turbine mainframe.According to GL and standards such as EC3 1-9,through extrapolating D-value of a rack welded structure,load stress under unit load is obtained at welding area.As for the fatigue load distribution applying upon the frame,which equivalent fatigue stress could be obtaine... |
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| Keywords: | Wind turbine generator Mainframe FEA Strength |
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