基于定转子结构参数分层的永磁同步电机低振动优化设计
Optimised Design of Permanent Magnet Synchronous Motor with Low Vibration Based on Stator-rotor Structural Parameter Hierarchy
李放 1卢炽华 1刘志恩 1陈程 2程坤1
作者信息
- 1. 武汉理工大学现代汽车零部件技术湖北省重点试验室,武汉 430070;汽车零部件技术湖北省协同创新中心,武汉 430070;佛山仙湖实验室,佛山 528200
- 2. 武汉理工通宇新源动力有限公司,武汉 430223
- 折叠
摘要
为降低永磁同步电机在额定工况下峰值电磁振动,提出采用定转子结构参数多目标分层优化方法.首先建立多物理场耦合分析模型,探究机壳表面电磁振动分布特性,通过整机锤击法模态和台架振动测试验证了模型准确性;对定转子结构参数灵敏度分析,基于拉丁超立方(LHS)和中心复合设计(CCD)进行响应面试验设计,采用多目标遗传算法NSGA-Ⅱ对两层目标进行迭代得到最优解集,通过电磁振动仿真和转子强度分析,进行优化前后对比.结果表明,在满足输出性能和强度要求的同时,在全转速范围内48阶电磁振动明显改善,该优化方法可为电机噪声振动诊断及优化设计提供参考.
Abstract
In regard to reducing the peak electromagnetic vibration of permanent magnet synchronous motor under ra-ted operating conditions,a multi-objective hierarchical optimisation method of stator-rotor structural parameters is pro-posed.Firstly,a multi-physical field coupling analysis model is establish to investigate the electromagnetic vibration distri-bution property on the surface of the casing,and the precision of the model is validated by the modal and bench vibration tests of the hammering method of the whole machine;the sensitivity analysis of the stator-rotor structural parameters is carried out,and the response surface experimental design is carried out based on the Latin Hyper Cubic(LHS)and the Central Composite Design(CCD),and the multi-objective genetic algorithm NSGA-Ⅱ is adopted to obtain the optimal so-lution set by iteratively iterating over the two layers of objectives,and the comparison before and after optimization is car-ried out through the electromagnetic vibration simulation and the rotor strength analysis.The optimal solution set is com-pared before and after optimisation by electromagnetic vibration simulation and rotor strength analysis.The results show that while meeting the output performance and strength requirements,the 48th-order electromagnetic vibration is signifi-cantly improved in the full speed range,and the optimisation method can provide a reference for the noise and vibration di-agnosis and optimal design of the motor.
关键词
电磁振动/多物理场耦合/模态测试/分层优化Key words
electromagnetic vibration/multi-physical field coupling/modal testing/hierarchical optimisation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据