大型汽轮机发电机转子扭振试验

Testing Research on Torsional Vibration of Turbo Generator

采用模态分析方法,通过电动激振器随机激励,用加速度传感器作响应传感器,研究大型汽轮发电机转子的扭转固有频率、阻尼和振型。试验证明,利用加速度传感器拾振的模态分析方法分析发电机转子扭振特性是可行的、可靠的。

This paper presented a new method to measure the torsional vibration of turbo generator,with an accelerator installed directly on the rotor,to obtain the natural frequencies,damping ratios and shapes. The comparisons of the computing results and testing results indicate that the method presented in this paper is available for the torsional measurement of turbo generator rotor.