内置式永磁电机碳纤维护套转子强度及过盈量分析

为解决内置式高速永磁电机在高速运行时的强度问题，对内置式永磁电机转子冲片结构和外部碳纤维绑扎带进行了综合设计研究。采用有限元方法，对冲片和碳纤维护套进行了整体刚度协调变形分析，重点考虑了碳纤维绑扎预紧力对初始绑扎状态和高速运行状态的不同影响。分析了初始过盈量及绑扎层厚度与静态及动态应力分布的关系，得出了动、静态下内置式永磁电机转子碳纤维护套强度与冲片强度的规律。

Strength and Interference Analysis of Carbon Fiber Sleeve Rotor for Interior Permanent Magnet Motor

In order to solve the strength problem of interior high-speed permanent magnet motor at high speed, the rotor punch structure and the external carbon fiber banding of interior permanent magnet motor are comprehensively designed and studied. Finite element method is used to analyze the overall stiffness coordination deformation of the punch and carbon fiber sleeve, and the different effects of the carbon fiber binding preload on the initial binding state and high speed operation are mainly considered. The relationship between the initial interference and the thickness of the binding layer and the static and dynamic stress distribution is analyzed, and the rules of the carbon fiber sleeve strength and the punch strength of the interior permanent magnet motor rotor under dynamic and static conditions are obtained.