摘要
大容量功率型飞轮储能系统是电力系统优质调频资源,采用高强度、低密度的复合材料制造飞轮转子是提升飞轮储能量的主要方法。本工作以大尺寸的复合材料飞轮转子为对象,在弹性理论基础上,推导出各向异性材料转子轮缘在高速旋转下的应力分布公式,并基于应力叠加原理得到了复合材料轮缘与金属轮毂过盈配合下的应力分析公式,给出了解析解;然后建立了复合材料轮缘与金属轮毂过盈配合的有限元分析模型,对转子应力分布进行仿真分析,仿真结果与解析结果基本一致,验证了模型的合理性。最后针对过盈量对复合材料转子轮缘与金属轮毂接触面应力的影响,以及飞轮转子在给定转速下的变形对过盈量及接触面应力的影响进行了分析。
Large capacity power flywheel energy storage system is the high-quality frequency modulation resource of the power system.The primary technique for enhancing flywheel energy storage is the use of high-strength and low-density composite material to create flywheel rotors.In this study,the large-size composite flywheel rotor is taken as the object.Based on the elastic theory,the stress distribution formula of the anisotropic material rotor rim under high-speed rotation is obtained.The interference fit between the composite rim and the metal hub's stress analysis formula is obtained based on the principle of stress superposition,and an analytical solution is provided.Then the finite element analysis model of interference fit between the composite rim and metal hub is established,and the stress distribution of the rotor is simulated and analyzed.The simulation results are consistent with the analytical results,which confirm the rationality of the model.Finally,the impact of interference on the stress of the contact surface between the metal hub and the composite rotor rim as well as the impact of the flywheel rotor's deformation at a specific speed are investigated.
作者
王泽峥
曲文浩
王亚军
秦润
柳亦兵
WANG Zezheng;QU Wenhao;WANG Yajun;QIN Run;LIU Yibing(Advanced Flywheel Energy Storage Technology Research Center,North China Electric Power University,Beijing 102206,China;Shenzhen Energy Nanjing Holding Co.,Ltd,Nanjing 210000,Jiangsu,China)
出处
《储能科学与技术》
CAS
CSCD
北大核心
2023年第3期669-675,共7页
Energy Storage Science and Technology
关键词
复合材料
飞轮转子
解析模型
有限元分析
应力分布
composite materials
flywheel rotor
analytical model
finite element analysis
stress distribution
