Elimination of upper bracket resonance in extremely high head Francis hydro-generators

被引：2

作者：

Luo, Yongyao ^{[1
]}

Wang, Zhengwei ^{[1
]}

Chen, Guodong ^{[2
]}

Lin, Zujian ^{[2
]}

机构：

[1] Tsinghua Univ, Dept Thermal Engn, Beijing 100084, Peoples R China

[2] Fujian Elect Power Testing & Res Inst, Fuzhou 350007, Peoples R China

来源：

ENGINEERING FAILURE ANALYSIS | 2009年 / 16卷 / 01期

关键词：

Generator upper bracket; Resonance; FEA; Field test;

D O I：

10.1016/j.engfailanal.2008.01.008

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Resonance occurred in the upper bracket of extremely high head Francis hydro-generators due to rotational vibrations. The vibration source was deter-mined from field tests and a finite element analysis (FEA) of the structure. The first order natural frequency of the integrated structure including the upper bracket and the stator frame was then altered using the FEA model. The resonance during overspeed operation was eliminated, with the results verified by field tests. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：119 / 127

页数：9

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