电机与控制应用2025，Vol.52Issue(4)：432-441,10.DOI:10.12177/emca.2025.021
定子齿开槽对屏蔽式永磁同步电机齿槽转矩的影响
Effect of Stator Tooth Slotting on Cogging Torque of Canned Permanent Magnet Synchronous Motor
摘要
Abstract
[Objective]Reducing cogging torque is a key issue in motor design.It is widely recognized that slotting the stator teeth of permanent magnet synchronous motor(PMSM)can effectively suppress cogging torque.However,the feasibility of using this method for canned permanent magnet synchronous motor(CPMSM)remains unclear.[Methods]This study investigated a 6-pole,9-slot CPMSM.A motor model was developed using the finite element method,and stator tooth slotting was implemented.Based on the derivation of the cogging torque expression for the CPMSM,the influence of auxiliary stator tooth slots on cogging torque was analyzed.In addition,the effects of slot number,slot shape,slot position,slot opening width,and slot depth on cogging torque reduction were studied,along with a performance comparison before and after slotting.[Results]The research results showed that,compared with conventional PMSM,the presence of a shielding sleeve in CPMSM reduced the effectiveness of auxiliary slotting for cogging torque suppression.Furthermore,identified as two rectangular slots with a width of w=2.6 mm,a depth of h=0.4 mm,and an offset angle of ∂=12.8°,which achieved the best suppression performance on the CPMSM's cogging torque.[Conclusion]The proposed method of slotting the stator teeth of CPMSM to suppress cogging torque is feasible.Additionally,auxiliary slotting reduces the amplitude of air gap flux density and shielding sleeve losses,thereby improving motor efficiency.This study provides valuable insights for the optimization and design of CPMSM.关键词
辅助槽/定子齿/齿槽转矩/屏蔽式永磁同步电机Key words
auxiliary slot/stator teeth/cogging torque/canned permanent magnet synchronous motor分类
动力与电气工程引用本文复制引用
陈子淋,李明,王蓉,伦淑娴..定子齿开槽对屏蔽式永磁同步电机齿槽转矩的影响[J].电机与控制应用,2025,52(4):432-441,10.基金项目
国家自然科学基金项目(62473061) （62473061）
辽宁省教育厅一般项目(LJ212410167024)National Natural Science Foundation of China(62473061) （LJ212410167024）
General Project of Liaoning Provincial Department of Education(LJ212410167024) （LJ212410167024）
