基于多层代理模型的高转矩低噪声IPMSM多目标协同优化  

High-torque and low-noise IPMSM multi-objective collaborative optimization based on multi-layer surrogate model

作　　者：李晓华 李光旭 韩忠川 韩旭 魏书荣 LI Xiaohua;LI Guangxu;HAN Zhongchuan;HAN Xu;WEI Shurong(Electric Power Engineering,Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海电力大学电气工程学院,上海200090

出　　处：《电工电能新技术》2025年第2期1-12,共12页Advanced Technology of Electrical Engineering and Energy

基　　金：国家自然科学基金项目(52377063)。

摘　　要：为在电机设计阶段提高电机转矩性能的同时降低电机的振动噪声,实现高转矩低噪声永磁同步电机有序高效的快速优化,本文提出了一种基于结构参数灵敏度分级的多层代理模型内置式永磁同步电机(IPMSM)优化方法,首先通过“有限元+单位力波响应”混合模型获得电机多工况电磁噪声源关键阶次电磁力谐波,将其幅值与电机平均输出转矩、转矩脉动同时作为优化目标,通过随机森林算法分析结构参数灵敏度,实现对结构参数的筛选与分级,综合多岛遗传算法、多目标粒子群算法、参数化扫描等优化方法进行分级优化。本文方法和传统电机多场耦合优化方法相比,节约算力的同时减少了54.9%的计算时间。优化后平均输出转矩较优化前提升34.6%,电机关键阶次电磁力幅值较优化前降低13.7%,转矩脉动较优化前降低67.8%。In order to establish the mapping relationship between key electromagnetic force harmonics and structural parameters in the motor NVH design stage,and achieve an orderly,efficient and rapid optimization of high-density and low-noise IPMSM,this paper proposes a multi-layer surrogate model IPMSM optimization method based on structural parameter sensitivity classification.First,the key-order electromagnetic force of the multi-operating electromagnetic noise source of the motor is obtained through the“finite element method+unit force wave response”hybrid model,taking its amplitude,IPMSM’s average output torque,and torque pulsation as optimization targets at the same time,analyzing the sensitivity of structural parameters through the random forest algorithm to achieve screening and grading of structural parameters,integrating multi-objective particle swarm algorithm,multi-island genetic algorithm,parametric scanning and other optimization methods are used for hierarchical optimization.Compared with the traditional motor multi-field coupling optimization method,this method saves computing power and reduces the calculation time by 54.9%.After optimization,the average output torque is increased by 34.6%as compared with before optimization,the electromagnetic force amplitude of the key order of the motor decreased by 13.7%as compared with before optimization,and the torque ripple decreased by 67.8%as compared with before optimization.

关 键 词：多目标优化 内置式永磁同步电机 代理模型 振动噪声 敏感性分析 

分 类 号：TM351[电气工程—电机]