基于混合介质网格的表贴式永磁游标电机通用等效磁网络模型  

General Equivalent Magnetic Network Model of Surface Permanent Magnet Vernier Machine Based on Hybrid Medium Mesh

作　　者：朱旭光 刘正蒙 刘国海[1] 柯昊 杜康康 徐亮[1] ZHU Xuguang;LIU Zhengmeng;LIU Guohai;KE Hao;DU Kangkang;XU Liang(School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu Province,China)

机构地区：[1]江苏大学电气信息工程学院,江苏省镇江市212013

出　　处：《中国电机工程学报》2024年第5期2009-2018,I0029,共11页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51877098,52177044)。

摘　　要：为了更加快速准确地分析表贴式永磁游标电机的电磁特性与参数,提出一种通用等效磁网络模型。该模型的关键在于引入混合介质网格,可将调制齿区域沿周向剖分成相同大小的网格单元,实现对表贴式永磁游标电机调制齿区域的通用建模。同时,此通用等效磁网络模型还确定了定子和气隙的节点连接关系,避免传统等效磁网络模型因瞬态仿真导致的两者节点不规则连接问题,降低仿真误差。此外,考虑到定子极靴存在局部磁饱和现象,文中根据其拓扑结构和磁通密度分布,将定子极靴剖分成3个部分,并细分磁饱和区域,进一步提高模型精度。最后,利用此通用等效磁网络模型计算表贴式永磁游标电机的部分电磁性能,包括气隙磁密,磁链,反电势和转矩,并通过比较计算结果、有限元分析结果以及实验结果的误差,验证所提出模型的有效性和精确性。In order to analyze the electromagnetic characteristics and parameters of surface permanent magnet vernier(SPMV) machine more quickly and accurately,a general equivalent magnetic network(GEMN) model is proposed in this paper.The key of the model is the introduction of hybrid medium mesh,which could divide the modulation tooth region into mesh elements with the same size along the circumferential direction,and realize the general modeling of the modulation tooth region of SPMV machine.Meanwhile,the connection of stator and airgap is determined by the GEMN model,which avoids the problem irregular connection between stator and airgap caused by transient simulation of the conventional equivalent magnetic network(EMN) model and reduced the simulation error.In addition,considering the local magnetic saturation phenomenon of the stator pole shoe,the stator pole shoe is divided into three parts based on its topology and flux density distribution,and the magnetic saturation region is subdivided to further improve the model accuracy.Finally,the GEMN model is used to calculate some electromagnetic properties of the SPMV machine,including the airgap flux density,flux linkage,back EMF and torque.The effectiveness and accuracy of the proposed model are verified by comparing the errors of the calculation results,finite-element analysis(FEA) results and experimental results.

关 键 词：永磁游标电机 通用等效磁网络 混合介质 磁饱和 有限元分析 

分 类 号：TM351[电气工程—电机]