高速电机转子热-动力学分析与结构优化  

Thermal-Dynamics Analysis and Structural Optimization of High-Speed Motor Rotor

作　　者：戴坤鹏 徐冠华 DAI Kun-peng;XU Guan-hua(Shanghai Minghua Electric Power Science&Technology Co.Ltd.,Shanghai 200090,China;College of Mechanical Engineering,Zhejiang University,Hangzhou Zhejiang 310027,China)

机构地区：[1]上海明华电力科技有限公司,上海200090 [2]浙江大学机械工程学院,浙江杭州310027

出　　处：《计算机仿真》2025年第1期281-286,共6页Computer Simulation

基　　金：国家自然科学青年基金(51805477);江苏省自然科学基金青年基金项目(BK20150397)。

摘　　要：针对高速电机存在的发热、振动、噪声等问题,建立了高速电机转子主轴温度场、结构模态与谐响应等有限元分析模型,通过参数化建模与多目标优化,实现了电机转子温度场和结构动力学特性优化。采用ANSYS Workbench多目标优化模块,以增加主轴散热性能、提高主轴工作频率和减小主轴结构辐射噪声等为目标,实现仿真验证。结果表明,优化后电机转子主轴的最高温度比初始值降低了8.18%,一阶模态频率比初始值提高了3.90%,最大速度响应幅值比初始值降低了7.65%,对于提高主轴散热性能、降低主轴振动噪声具有重要理论指导意义。Aiming at the problems of heat generation,vibration and acoustic radiation of high-speed motors,a finite element analysis model of heat transfer,structural modal and harmonic response for a high-speed motor rotor spindle is established.According to the parametric modeling and multi-objective optimization,the temperature field and structural dynamic characteristics of the motor rotor are optimized.Simulation verification is realized by using the multi-objective optimization module in the ANSYS Workbench Environment,with the targets of increasing spindle heat dissipation performance,increasing spindle operating frequency,and reducing spindle structural radiation noise.Results show that the maximum temperature of the optimized spindle is 8.18%lower than the initial value,the firstorder modal frequency is 3.90%higher than the initial value,and the maximum speed response amplitude is 7.65%lower than the initial value.It indicates an important theoretical guide for improving the heat dissipation performance and reducing the vibration and acoustic radiation of the spindle.

关 键 词：高速电机 转子主轴 有限元 结构优化 多目标优化 

分 类 号：TH128[机械工程—机械设计及理论]