关键词: V型内置式永磁转子, 结构强度, 动力学分析, 磁齿轮永磁电机, 多目标优化

Abstract:

The main and auxiliary magnetic isolation bridges of the high-speed V type interior permanent magnet rotor are easy to be damaged under the action of high-speed centrifugal force. Therefore, it is necessary to analyze the strength of the high-speed V type interior permanent magnet rotor, so as to put forward the direction of structural optimization. Based on the coordination mechanism of high-speed centrifugal force and deformation, the structural mechanics analytical equation of V type interior permanent magnet rotor was established, and verified by finite element simulation. Considering the design requirements and adaptability conditions of the V type interior permanent magnet rotor in the flywheel energy storage and magnetic coupling drive device, the radial and tangential widths of the main and auxiliary magnetic isolation bridges, the distance between the permanent magnet and the rotor center, and the angle between the V type permanent magnets were extracted as the optimal parameters. A multi-objective optimization model with the objective function and constraints of rotor mass, maximum stress and maximum deformation of static stress is established to optimize the structural parameters of permanent magnet rotor.

Key words: V type interior permanent magnet rotor, structural strength, dynamic analysis, magnetic-geared permanent magnet motor, multi-objective optimization