车用多层磁钢内置式永磁同步电机研究与设计  

Design and research of multi-layer built-in permanent magnet synchronous motor for hairpin winding

作　　者：林涵 张宇航 王仲根[1] 邓天龙 LIN Han;ZHANG Yuhang;WANG Zhonggen;DENG Tianlong(School of Electrical and Information Engineering,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学电气与信息工程学院,安徽淮南232001

出　　处：《重庆理工大学学报（自然科学）》2024年第7期228-239,共12页Journal of Chongqing University of Technology：Natural Science

基　　金：安徽省自然科学基金项目(1808085QF197);安徽高校自然科学重点项目(KJ2020A307)。

摘　　要：针对电动汽车驱动电机性能需求日益提升的现状,设计了一种车用发卡绕组多层磁钢内置式永磁同步电机,保证高功率密度、高效率的设计要求。利用有限元方法建立4种发卡绕组多层磁钢内置式永磁同步电机的二维模型,在转子分段斜极优化的基础上,比较4种电机的性能,探究多层磁钢结构中不同永磁体对电机性能的影响,选择最合适的结构进行后续多次优化;利用田口算法对电机磁钢尺寸设计进行优化,通过参数对优化目标影响的比重选出最优组合;对优化后的电机进行Halbach充磁,对每层磁钢分别利用同一角度充磁,进行参数化扫描寻优,选择最合适的一层充磁,并选择最合适的充磁角度及对应的充磁长度获取最优性能。结果表明:多次优化后的电机在保证较高平均转矩的基础上,转矩脉动与齿槽转矩大幅降低,可满足新能源汽车电机的性能需求。In light of the escalating demands for enhanced performance in electric vehicle(EV)drive motors,this study has pioneered the development of a bespoke hairpin winding multi-layer magnet internal permanent magnet synchronous motor(IPMSM),tailored specifically for automotive applications.The objective of this innovative design is to achieve superior power density and operational efficiency,which are critical benchmarks for the success of EVs in the rapidly evolving market.The inception of this project involved a rigorous theoretical grounding,where the research team delved into the mathematical models and analytical equations governing the behavior of drive motors.Leveraging the sophisticated tool of finite element analysis(FEA),they constructed four distinct two-dimensional models of hairpin winding multi-layer magnet IPMSMs.These models served as the digital blueprints for the subsequent stages of the project.To refine the rotor’s performance,the team implemented a technique known as segmented skew optimization.This approach involves strategically altering the alignment of the rotor segments to mitigate issues such as torque ripple and cogging torque,which can adversely affect the smoothness and responsiveness of the motor.Through meticulous comparison of the four modeled motors,the team scrutinized a suite of critical performance metrics,including average torque,torque ripple,cogging torque,the fundamental amplitude and distortion rate of back electromotive force,and the fundamental amplitude and distortion rate of radial air gap magnetic density.The comparative analysis shed light on the nuanced effects of various permanent magnet configurations within the multi-layer magnet structure,ultimately leading to the identification of the optimal motor architecture—a pivotal stepping stone for future optimizations.Building upon this foundational work,the researchers adopted the Taguchi method,a robust statistical technique renowned for its efficacy in optimizing product designs while minimizing the number of experi

关 键 词：发卡绕组 多层内置式永磁同步电机 田口算法 Halbach充磁 参数化扫描 

分 类 号：TM351[电气工程—电机]