车用高功率密度电机扩速拓矩研究  

Research on speed and torque extension of high-power density motors for vehicles

作　　者：梁栋 陶健 陈星 LIANG Dong;TAO Jian;CHEN Xing(School of Mechatronics and Vehicle Engineering,Chongqing Jiaotong University,Chongqing 400074,China;School of Intelligent Manufacturing Engineering,Chongqing University of Arts and Sciences,Chongqing 402160,China)

机构地区：[1]重庆交通大学机电与车辆工程学院,重庆400074 [2]重庆文理学院智能制造工程学院,重庆402160

出　　处：《重庆理工大学学报(自然科学)》2025年第1期140-147,共8页Journal of Chongqing University of Technology:Natural Science

基　　金：重庆市教委科学技术研究项目(KJZD-K202101301);博士后科学基金项目(2018M643420,2019T120813);重庆文理学院人才引进项目(R2021SZZ01)。

摘　　要：基于车用电机扩速拓矩的性能需求设计了一种采用永磁体分段结构的优化反凸极永磁同步电机。介绍了反凸极电机的结构和设计原则;以扩宽恒功率转速范围和提升电磁拓矩为目标,以凸极率为约束,利用粒子群算法(PSO)对电机进行多目标优化,并对比分析优化前后电机的性能。有限元仿真分析结果表明:结构优化后,相比于优化前转矩提升了16%,转速范围由5:1提升到6.5:1,验证了优化电机提升转矩和扩宽转速范围的有效性。Compared with the traditional salient pole motor,the D-axis inductance of the inverted salient pole motor is greater than the Q-axis inductance.As a result,the inverted salient permanent magnet synchronous motor features wide speed regulation range,strong overload capacity,and uneasily demagnetized magnet.Based on the performance requirements of the expansion speed and torque of the vehicle motor,we design an optimized reverse salient pole permanent magnet synchronous motor with permanent magnet segmentation structure.First,the structure and design principles of the inverted salient pole motor are introduced in detail.Then,to broaden the constant power speed range and improve the electromagnetic topping torque,the salient pole rate is employed as the constraint and the multi-objective optimization of the motor is made by the particle swarm optimization(PSO).Finally,the performance of the motor before and after optimization is compared and analyzed.The effectiveness of the anti-salient pole motor for increasing the speed range,optimizing the lifting torque and expanding the speed range of the motor is verified.

关 键 词：永磁同步电机 反凸极 多目标优化 恒功率转速范围 

分 类 号：TM341[电气工程—电机]