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针对一种起重机用新型永磁同步电机(PMSM)的转子进行设计和稳定性研究,首先建立了起重机用新型PMSM转子的三维物理模型及数学模型,基于屈曲理论基础,运用有限元法对转子模型进行了线性屈曲分析,探讨了绳槽对临界载荷的影响规律。将线性屈曲及非线性屈曲进行对比分析,在考虑初始几何缺陷和材料非线性及大变形的基础上,探讨了转子长度、壁厚、端侧板厚度、材料属性等对转子稳定性的影响规律。并将几何/材料双非线性与极限强度进行对比分析。最后对电机的转子及主轴进行刚强度校核。通过以上分析,能有效减轻外转子自重,降低生产成本,缩短生产周期。
Aiming at the design and stability of a new type of permanent magnet synchronous motor (PMSM) rotor of a crane, a three-dimensional physical model and a mathematical model of a new PMSM rotor for crane are established. Based on the theory of buckling, the finite element method The linear buckling analysis was carried out and the influence of rope groove on the critical load was discussed. Based on the comparison of linear buckling and nonlinear buckling, the influences of rotor length, wall thickness, end plate thickness and material properties on rotor stability are discussed based on initial geometric imperfections and material nonlinearities and large deformations . The geometrical / material double nonlinearity and the ultimate strength were compared and analyzed. Finally, the motor rotor and spindle strength check. Through the above analysis, can effectively reduce the outer rotor weight, reduce production costs and shorten the production cycle.