电机转子轴窜优化的数值模拟  

Numerical simulation-based optimization of rotatory motor rotor axial displacement

作　　者：吕品 程鲁帅 李明军 王凯旋 王浩铭 翟悦琳 LüPin;Cheng Lushuai;Li Mingjun;Wang Kaixuan;Wang Haoming;Zhai Yuelin(School of Electrical&Control Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China)

机构地区：[1]黑龙江科技大学电气与控制工程学院,哈尔滨150022

出　　处：《黑龙江科技大学学报》2024年第5期794-799,共6页Journal of Heilongjiang University of Science And Technology

基　　金：国家自然科学基金项目(51677057);黑龙江省省属高等学校基本科研业务费项目(2020-KYYWF-0700)。

摘　　要：为解决电机轴窜问题,以一台2 800 kW的全封闭高压凸极同步电机为例,采用有限体积法对电机内流场进行数值模拟,与实验对比证实模拟结果的准确性。结果表明:转子两端风压差值过大为引起电机转子轴窜的原因;减小弧形风扇轴向高度易于减小转子轴向窜动量,相对于原弧形风扇,轴向优化后转子两端风压差值分别减小72.98%和96.49%,最终优化后的弧形风扇转子两端轴向风压差值为77.9 N,转子轴向窜动量为0,满足电机设计要求。该研究可为电机转子轴窜优化提供理论依据。This paper aims to address the motor axial shifting problem.By taking a 2 800 kW totally enclosed high-voltage convex pole synchronous motor as an example,the study is performed by adopting the finite volume method to numerically simulate the flow field in the motor;comparing the experimental results to confirm the correctness of the simulation results.The results show that the too large D-value of air pressure at the two ends of the rotor is the cause of the motor rotor axial shifting.The decrease of the axial height of the arc fan easily decreases the axial shifting volume of the rotor shaft,and relative to the original arc fan,D-value of air pressure at the two ends of the rotor after axial optimization is reduced by 72.98% and 96.49%,respectively;in the end,D-value of air pressure at the two ends of the rotor after arc fan optimization is 77.9 N,the rotor axial shifting amount is 0,as which meet the requirements of the motor design.This study results can provide the theoretical basis for the optimization of the motor rotor axial shifting.

关 键 词：全封闭高压凸极同步电机 弧形风扇 轴向风压 

分 类 号：TM351[电气工程—电机]