车用微型永磁直流电机的齿槽转矩优化  

Optimization of Cogging Torque for Automotive Micro PMDC Motor

作　　者：冯桑[1] 邱宏波 黄越诚 FENG Sang;QIU Hong-bo;HUANG Yue-cheng(School of Electromechanical Engineering,Guangdong University of Technology,Guangdong Guangzhou 510006,China)

机构地区：[1]广东工业大学机电工程学院,广东广州510006

出　　处：《机械设计与制造》2023年第5期130-133,共4页Machinery Design & Manufacture

基　　金：教育部产学合作协同育人项目(201901221008);教育部产学合作协同育人项目(201901241011)。

摘　　要：过大的齿槽转矩会造成电机转矩波动、产生噪音和振动,是永磁电机高精度高性能优化设计的关键因素。研究中以某4槽10极汽车座椅永磁有刷直流电机为例,通过建立电机相应的电磁场模型以及理论分析,探究了电磁力、永磁体的极弧系数和偏心距参数对电机振动的影响,提出了减小齿槽转矩的电机结构综合优化方案。通过Ansoft Maxwell电磁仿真与实验测试,验证了所设计方案的有效性;与原设计相比,优化结构后的电机,齿槽转矩降低了85.95%,振动减小了80%,噪音减小了11%。Excessive cogging torque can cause torque fluctuation,noise and vibration,which is the key factor of high precision and high performance optimization design of permanent magnet motor.A PMDC motor with 4-slots and 10-poles for automobile seat was taken as an example.Through the establishment of the corresponding electromagnetic field model and theoretical analysis,the influence of electromagnetic force,pole arc coefficient and eccentricity parameters of permanent magnet on motor vibration is explored,and a comprehensive optimization scheme of the motor structure to reduce the cogging torque is proposed.The effectiveness of the design scheme is verified by Ansoft Maxwell electromagnetic simulation and experimental test.Compared with the original design,the cogging torque is reduced by 85.95%,the vibration is reduced by 80%,and the noise is reduced by 11%.

关 键 词：永磁有刷直流电机 齿槽转矩 极弧系数 偏心距 Ansoft Maxwell 

分 类 号：TH16[机械工程—机械制造及自动化] TM381[电气工程—电机]