储能科学与技术2024，Vol.13Issue(5)：1542-1550,9.DOI:10.19799/j.cnki.2095-4239.2023.0925
MW级大储能量飞轮轴系结构力学及动力学研究
Research on mechanics and dynamics of MW-level large energy storage flywheel shafting
摘要
Abstract
Current research on high-power,large-capacity flywheel energy storage systems remains insufficient.This study focuses on a newly developed prototype of a MW/100 MJ flywheel.We analyzed the structural mechanics of both built-in and surface-mounted flywheel motor rotors,assessed the impact of different dynamic balance block materials on stress and deformation,and performed a dynamic characteristics analysis of the shaft system.Experimental validation of the flywheel prototype was conducted to ascertain system stability.Findings from numerical calculations suggest that the surface-mounted design substantially reduces stress on the silicon steel sheet,although this configuration typically necessitates a carbon fiber reinforced layer to prevent the magnetic steel from detaching from the silicon steel sheet under centrifugal forces during operation.Stress values increased by over 45%when using stainless steel for the dynamic balance block compared to aluminum alloy.The shaft system's dynamic analysis revealed two rigid vibration modes at operational speeds of 1300 r/min and 4200 r/min,corresponding to translational and conical movements,respectively.Experimental observations confirmed a peak vibration at 1300 r/min,corroborating the numerical simulations.However,the anticipated critical speed(conical motion)at 4200 r/min did not manifest as a significant peak in actual tests,indicating that translational vibration modes are more prone to excitation in this shaft configuration.关键词
飞轮/电机/数值仿真Key words
flywheel/motor/numerical simulation分类
信息技术与安全科学引用本文复制引用
胡东旭,朱少飞,魏晓钢,崔亚东,祝保红,戴兴建,李文,陈海生..MW级大储能量飞轮轴系结构力学及动力学研究[J].储能科学与技术,2024,13(5):1542-1550,9.基金项目
内蒙古自治区科技重大专项(2020ZD0017-1),国家重点研发计划项目(2023YFB2406301). （2020ZD0017-1）
