摘要
现代飞轮或飞轮电池是在传统飞轮基础上发展起来的新兴技术,得益于支承、电机及电力电子技术的飞速发展,该技术可以实现更高转速、更大功率,具有许多独特优势。高转速甚至超高转速飞轮对选用材料的强度有更高要求。相比于纤维增强型复合材料,金属材料的极限强度虽然略低,但其质量密度大,各向同性好,制造质量容易保证,具有更长的使用寿命,仍然具有重要的使用价值及现实意义。以获得更高的储能密度为前提,飞轮转子的结构有多种选择形式,本文在以材料极限强度为约束条件下,将影响飞轮储能密度的两个关键参量(转速和单位质量转动惯量)综合转化为轮体结构形状的优化设计,得到了影响储能飞轮性能指标的各个主要因素的量化关系,并给出不同金属材料的结构形状与对应储能密度的计算方法与结果。
Thanks to the rapid development of bearing,motor and power electronic technology,modern flywheel or flywheel battery,a new technology based on the traditional flywheel,can achieve higher speed and power with many unique advantages.High or even super high speed flywheel requires strictly to the strength of selected materials.Compared with fiber reinforced composites,the ultimate strength of metallic materials is lower,while with high quality density,isotropic,well guaranteed quality and long service life.It is still of important application value and practical significance.On the premise of higher energy storage density,there are multiple options for the structure of the flywheel rotor.Constrained by the ultimate strength of the material,speed and unit mass inertia,which are key parameters that affect the energy storage density of the flywheel,are designed optimally for the shape and structure of the wheel body.The quantitative relationship between the main factors affecting the performance index of the energy storage flywheel is obtained.Also,the results and the calculation method of different structure shapes and the corresponding storage energy density of different metal materials are presented in this article.
作者
赵宇兰
白金刚
赵雷
ZHAO Yulan;BAI Jingang;ZHAO Lei(Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing 100084,China;Central Academy,Harbin Electric Company Limited,Harbin 150028,China)
出处
《大电机技术》
2021年第4期70-76,共7页
Large Electric Machine and Hydraulic Turbine
基金
中国博士后科学基金面上资助项目(2019M651256)
黑龙江省博士后基金资助项目(LBH-Z18046)。
关键词
储能飞轮
储能密度
储能量
形状系数
材料强度
结构优化
energy storage flywheel
energy storage density
energy storage capacity
shape factor
material strength
structure optimization
