摘要
大功率高储能量是飞轮储能技术的发展趋势。以城市轻轨刹车动能再生为应用背景,研制了20 kW/1kWh的飞轮储能系统。采用ANSYS对该飞轮转子支承系统进行动力学建模与仿真,计算出轴系主振型、临界转速与模态阻尼比;并对机座、真空套筒等非转动部件进行模态分析。进行了多次飞轮升降速试验,实时监测并记录飞轮运行全过程的幅频特性。试验结果与数值仿真的一致性较好,为飞轮系统的优化与改进提供可靠的理论与试验依据。
The development trend of flywheel energy storage technology is high power and large capacity. A 20kW/ I kwh of flywheel energy storage system was developed for an application background of regenerating brake energy in urban rail-traffic. Based on ANSYS software, the dynamic model of the flywheel rotor-bearing-damper system was built. Its critical speeds, modal shapes and modal damping ratios were calculated, the modal analysis of the flywheel frame and vacuum container was also performed. The amplitude-frequency responses of the flywheel dynamic system were recorded with a number of its operating tests. The experimental results agreed well with those of numerical simulation, they provided a reliable theoretical and test basis for optimization and improvement of a flywheel system.
出处
《振动与冲击》
EI
CSCD
北大核心
2013年第1期38-42,共5页
Journal of Vibration and Shock
关键词
飞轮储能
动力学
主振型
模态分析
flywheel energy storage
dynamics
mode shape
modal analysis
