高速表贴式永磁电机转子强度分析

Strength Analysis of High Speed Surface Mounted Permanent Magnet Motor Rotor

随着科学技术飞速发展,永磁电机也正不断完善与改进。与传统电动机相比,永磁电动机具有结构简单、体积小、重量轻、损耗小、效率高以及功率因数高等优势,主要用于要求响应快速、调速范围宽、定位准确的高性能伺服传动系统和直流电机中。而高速永磁电机也存在永磁体无法承受离心力引起的拉应力、转子温度分度不均等缺点,因此对永磁电机转子强度进行有效分析研究,改善机器应用性非常重要。基于机械强度设计、电磁设计以及转子动力学设计等理论知识,采用有限元法计算方法,经过相关研究试验,设计一种基于多物理场耦合高速永磁电机转子优化设计方法。

With the rapid development of science and technology, permanent magnet motors are constantly improving and improving. Compared with the traditional motor, the permanent magnet motor has the advantages of simple structure, small size, light weight, low loss, high efficiency and high power factor. It is mainly used for high performance servo transmission system requiring fast response, wide speed range and accurate positioning. And DC motors. The high-speed permanent magnet motor also has the disadvantage that the permanent magnet can not withstand the tensile stress caused by the centrifugal force and the uneven temperature index of the rotor. Therefore, it is very important to effectively analyze the rotor strength of the permanent magnet motor and improve the applicability of the machine. Based on the theoretical knowledge of mechanical strength design, electromagnetic design and rotor dynamics design, the finite element method is used to calculate a rotor optimization design method based on multi-physics coupling high-speed permanent magnet motor.