高速高功率密度风洞电机磁—热特性的研究

Research on the characteristic of electromagnetic-thermal of high speed and power density wind tunnel motor

基于新阶段风洞测试系统的对高速电机体积小、质量轻的指标要求,研制一种高速高功率密度永磁同步电机。提出采用极限电磁场—温度场综合分析的方法,实现永磁同步电机高功率密度下的高转矩性能。极限电磁场—温度场综合分析方法是利用有限元软件分析电机的电磁性能和损耗特性,在此基础上进行高功率密度电机的热负荷分析,在考虑温度分布的情况下,充分利用电机定转子各个部件所承受的极限温度,使电机达到一种极致使用的状态。在分析设计的基础上,制造一台样机并进行相关实验研究,利用电涡流测功机和温度传感器测量电机在额定状态下的机械特性及温度,对比试验和仿真结果验证了该设计方法的准确性。

Wind tunnel test system requires motor system which has little volume and wieght, so a high speed and power density permanent synchronous motor for wind tunnel test was researched. An ultimate comprehensive analysis method adopting electromagnetic and temperature field FEM was introduced, to make motor system high torque in little volume. The ultimate comprehensive analysis method adopts FEM software to analyze the electromagnetic characteristic and loss characteristic, and then analyzed the thermal load based the data of the electromagnetic FEM. Therefore, this method could adopt the stator and rotor＇s component ultimate characteristic, make every reach the ultimate temperature. And the motor system can reach the ultimate using. Based on the analyses and design, a prototype motor is manufactured for experiment with the lab environment. Compared the experiments with simulation results, it proves the design is accurate.