摘要
永磁电机转子作为储能飞轮的核心部件,需要具有较高的磁性能同时要满足材料结构强度要求。本文针对此问题,采用了综合评分法来衡量电机转子的电磁特性和力学特性。通过五因素四水平16项组合的优化方案,调整电机转子铁心结构参数,求出了因素主次顺序和最优组合。试验结果表明,在电机气隙磁密的基波幅值不变的情况下,转子最大应力值由原来的407.8 MPa,降低到了325.9 MPa,安全系数达到了1.227倍,满足了电机转子强度的设计要求。本研究提出了一种基于强度和气隙磁密的永磁电机转子结构优化方法,通过综合评分法实现了电机转子的气隙磁密的基波幅值与最大应力的综合指标的最优化。该方法可以解决大功率储能飞轮高速电机转子结构强度问题,提供了理论方法解决方案。
As the core component of the energy storage flywheel,the rotor of permanent magnet motor needs to have high magnetic properties and meet the requirements of material structure strength.To solve this problem,a comprehensive scoring method was used to measure the electromagnetic and mechanical characteristics of the motor rotor.Through the optimization scheme of 16 combinations of five factors and four levels,adjusting the structure parameters of the rotor core of the motor,the main and secondary sequence of factors and the optimal combination were obtained.The test results show that the maximum stress of the rotor is reduced from 407.8 MPa to 325.9 MPa,and the safety factor is 1.227 times,which meets the design requirements of the rotor strength.In this paper,an optimization method of the rotor structure of permanent magnet motor based on strength and gap density was proposed.The comprehensive index of the fundamental amplitude and maximum stress of the rotor air gap density was optimized by comprehensive scoring method.This method can solve the structural strength problem of high speed motor rotor with high power storage flywheel,and provides a theoretical solution.
作者
黄漪帅
梁志宏
李飞
王海波
苏森
HUANG Yishuai;LIANG Zhihong;LI Fei;WANG Haibo;SU Sen(Ningxia Power Co.,LTD.,National Energy Group,Yinchuan 750011,China;Guizhou Power Co.,LTD.,National Energy Group,Guiyang 550081,China;Guoneng Ningxia Lingwu Power Generation Co.,LTD.,National Energy Group,Lingwu Ningxia 751400,China;Huachi Kinetic Energy Beijing Technology Co.,LTD.,Beijing 101111,China)
出处
《微电机》
2024年第2期13-17,49,共6页
Micromotors
基金
华电宁夏灵武发电有限公司“基于光火储耦合热电联产系统的煤电机组灵活性提升技术的研究与示范应用”22MW4.5MWh飞轮储能及光火储耦合控制系统项目(Q/GW 3ZD-FDISC06-2021-BY04)。
关键词
电机转子
结构优化
优化试验
气隙磁密
最大应力
motor rotor
structural optimization
optimization experiment
air gap magnetic density
maximum stress
