水轮发电机组上机架-定子系统动态特性参数敏感性分析  

Dynamic Analysis of Upper Bracket-Stator System of Hydroelectric Unit Based on Sensitivity of Parameters

作　　者：毛子首[1] 马震岳[1] 

机构地区：[1]大连理工大学建设工程学部,辽宁大连116024

出　　处：《黑龙江大学工程学报》2010年第3期1-3,共3页Journal of Engineering of Heilongjiang University

基　　金：国家自然科学基金资助项目(50679009);辽宁省教育厅重点实验室科研资助项目(2008S045)

摘　　要：建立了上机架-定子耦联模型进行模态分析,考虑了定子铁芯和机座的热态工况。通过调整设计变量参数,进行灵敏度计算。结果表明,上机架立筋为最大影响因素,且系统频率并不随立筋厚度增大而持续增大,即存在极值点。The modal analysis on upper bracket-stator system is established,considering stator frame and stator core in thermal state.By the adjustment of the parameters,the frequencies are various.The results show that the most important effect factor is the thickness of the vertical steel of upper bracket and the frequency doesn＇t increase continuously through the enlargment of the thickness of the vertical steel structure,an extreme point existed.

关 键 词：耦联振动 灵敏度 模态 立筋 

分 类 号：TM312[电气工程—电机]