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高速运转的储能飞轮支承系统存在多个低频进动模态 ,这些模态的衰减指数对飞轮的安全运转具有决定意义。为提高模态阻尼 ,设计了引入外部阻尼的上、下阻尼器 ,具有恰当参数的阻尼器可以有效地改善飞轮转子支承系统的稳定性。本文求解飞轮转子支承系统的复特征值问题 ,分析了模态频率和模态阻尼比随转速的变化规律 ,对比了上、下阻尼器的功能 ,并讨论了下阻尼器刚度、阻尼对模态阻尼比的影响
The high-speed flywheel energy storage flywheel support system has multiple low-frequency precession modes, and the attenuation index of these modes is decisive for the safe operation of the flywheel. In order to improve the modal damping, the upper and lower dampers with external damping are designed. The damper with appropriate parameters can effectively improve the stability of the flywheel rotor support system. In this paper, the complex eigenvalue problem of flywheel rotor support system is solved. The variation of modal frequency and modal damping ratio with speed are analyzed. The functions of upper and lower dampers are compared. The stiffness of lower dampers, Effect of damping ratio