摘要
目前,针对内置式电机转子强度的研究,主要集中在转子的结构形状和尺寸大小上,并未考虑到铁心与磁钢之间的环氧树脂胶的影响。以500 kW永磁电机转子为研究对象,充分考虑到胶对电机转子的影响,首次提出了基于内聚力模型的电机转子强度分析方法,并给出了内聚力理论模型。通过基于内聚力模型的仿真结果与未考虑胶的仿真结果对比分析得出,基于内聚力模型的仿真结果更加符合实际情况,铁心应力有明显减小,磁钢应力分布更均匀,整体的径向位移变小。对不同强度胶的电机转子分析,通过铁心强度、磁钢强度、接触间隙、接触压强及径向位移等数据优化得出,500 kW电机转子的设计中,选用11MP强度的胶为最佳,使得电机转子铁心和磁钢综合强度最优。
At present,the research on rotor strength of built-in motor mainly focuses on the shape and size of rotor structure,and does not take into account the influence of epoxy resin adhesive between iron core and magnetic steel.Taking the rotor of 500 kW permanent magnet motor as the research object,and considering the influence of glue on the rotor,the strength analysis method of rotor based on cohesion model was proposed for the first time,and the cohesion theoretical model was given.The simulation results based on the cohesive force model are compared with the simulation results without considering the glue.The simulation results based on the cohesive force model are more consistent with the actual situation.The core stress is significantly reduced,the stress distribution of magnetic steel is more uniform,and the radial displacement of the whole is smaller.Based on the analysis of motor rotors with different strength of adhesive,through the optimization of core strength,magnetic steel strength,contact clearance,contact pressure and radial displacement data,it is concluded that in the design of 500 kW motor rotor,the adhesive with 11MP strength is the best,so that the comprehensive strength of motor rotor core and magnetic steel is the best.
作者
王方胜
刘洋
孙博文
李建明
王志强
WANG Fangsheng;LIU Yang;SUN Bowen;LI Jianming;WANG Zhiqiang(State Grid Inner Mongolia Eastern Electric Power Integrated Energy Service Co.,Ltd.,Hohhot 010013,China;Keyou Front Banner Xintian Wind Energy Co.,Ltd.,Xinganmeng Inner Mongolia 137713,China;Huachi Kinetic Energy(Beijing)Technology Co.,Ltd.,Beijing 101111,China)
出处
《微电机》
2023年第3期35-40,共6页
Micromotors
基金
内蒙古自治区科技重大专项(2020ZD0014)
2022年度自治区高等学校科学技术研究项目(NJZZ22302)。
关键词
内聚力
电机转子强度
磁钢应力
有限元法
接触应力
cohesion
motor rotor strength
magnetic steel stress
finite element method
contact stress
