面向转子机械位置无传感技术的非对称磁障和隔磁桥IPMSM设计  

Design of IPMSM with Asymmetric Magnetic Barriers and Magnetic Bridges for Rotor Mechanical Position Sensorless Technology

作　　者：郑涛 林晓刚 陈伟[1,3] 姜国豪[1] 解伟 ZHENG Tao;LIN Xiaogang;CHEN Wei;JIANG Guohao;XIE Wei(Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China;University of Chinese Academy of Sciences,Fujian,Fuzhou 350108,China;School of Advanced Manufacturing,Fuzhou University,Quanzhou 362251,China)

机构地区：[1]中国科学院福建物质结构研究所,福建福州350002 [2]中国科学院大学福建学院,福建福州350108 [3]福州大学先进制造学院,福建泉州362251

出　　处：《电机与控制应用》2025年第2期181-191,共11页Electric machines & control application

基　　金：国家自然科学基金(52307072);福建科技计划-STS院省合作项目(2022T3041,2023T3015)。

摘　　要：【目的】针对传统无位置传感器算法因只能观测电角度而无法应用于伺服位置的问题,本文提出一种具有非对称转子的8极9槽内置式永磁同步电机,利用其不对称的电感特性观测转子机械角。【方法】通过在转子不同极对下引入不同参数的磁障与隔磁桥,改变电机定转子之间主磁路和漏磁路的磁阻,使电感波形呈现出与转子机械角度信息有关的周期性变化。根据对磁路的分析结果,引入考虑了转子非对称性的修正系数对绕组函数法的电感计算方法进行修正。【结果】结果表明,磁障宽度增加会使得电感减小、隔磁桥高度增加会使得电感增大,与有限元仿真分析结果相比平均百分误差约1.59%。【结论】所提方法的计算结果和仿真结果验证了非对称转子拓扑在无位置传感器算法识别机械角度技术方面的可行性。[Objective]To address the issue that traditional sensorless algorithms can only observe electrical angles and thus cannot be applied to servo positioning,this paper proposes an 8-pole,9-slot interior permanent magnet synchronous motor with an asymmetric rotor.The asymmetric inductance characteristics of the rotor are utilized to observe its mechanical angle.[Methods]By introducing magnetic barriers and magnetic bridges with different parameters under different pole pairs of the rotor,the magnetic resistance of the main and leakage magnetic circuits between the stator and rotor was altered,leading to periodic variations in the inductance waveforms that were directly related to the rotor's mechanical angle.Based on the analysis of the magnetic circuit,a correction coefficient that considered the asymmetry of the rotor was introduced to modify the inductance calculation method using the winding function method.[Results]The results indicated that increasing the width of the magnetic barrier reduced the inductance,while increasing the height of the magnetic bridge increased the inductance.Compared to finite element simulation results,the average percentage error was approximately 1.59%.[Conclusion]The calculation and simulation results validate the feasibility of the proposed asymmetric rotor topology for identifying the mechanical angle in sensorless algorithm.

关 键 词：无位置传感器控制 机械角度 非对称转子 磁障 隔磁桥 电感 

分 类 号：TM351[电气工程—电机]