针对复杂工况下飞轮转子上、下传力支承角接触球轴承与支座间隙配合导致的振动问题,以及真空环境下振动控制问题,提出飞轮转子上支承采用圆柱滚子轴承,下支承采用深沟球轴承+成对角接触球轴承联合传力支承方案,解决了复杂工况下轴向力调整、磁轴承失效、轴向力平衡、支承刚度连续、支承系统变形协调等结构设计难题。同时引入一种主控式弹支干摩擦阻尼器（ESDFD）,抑制转子径向振动。采用有限元法建立ESDFD-储能飞轮转子系统耦合动力学模型,计算飞轮转子动力学特性,分析单/双阻尼器对转子振动的控制效果。结果表明：针对转子一阶、二阶模态振动,采用单/双阻尼器控制方式,最大响应均低于30 μm,减振比超过90%。
Abstract
Aiming at the vibration problems caused by the clearance fit between the angular contact bearings and the bearing chocks of the flywheel rotor's upper and lower supports under complex conditions, and the vibration control problem in the vacuum environment, a combined force transmission support scheme of the cylindrical roller bearing for upper support, and both deep groove ball bearing and diagonal contact ball bearing for lower support of flywheel rotor is proposed, which solves the structural design problems such as axial force regulation, magnetic bearing failure, nonlinear supporting stiffness and deformation compatibility of support under complex conditions. In addition, an elastic support/dry friction damper （ESDFD） is used to reduce the radial vibration of the rotor. The coupling dynamic model of the flywheel rotor with ESDFDs is established by using the finite element method. Base on that, the dynamic characteristics of flywheel rotor is calculated, and the control effect of single/double damper on rotor vibration is analyzed. The results show that under the control of a single/double damper, the maximum vibration response of the first and second order mode is lower than 30 μm and the vibration reduction ratio exceeds 90%.
关键词
飞轮储能 /
结构设计 /
振动控制 /
主控式弹支干摩擦阻尼器
Key words
flywheel energy storage /
structural design /
vibration control /
elastic support/dry friction damper
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基金
国家科技重大专项（J2019-IV-0005-0072）
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