一种抑制永磁盘式电机齿槽转矩的新方法  

A New Method of Cogging Torque Reduction for AFPM Motor

作　　者：邹文[1,2,3] 竺韵德 张钢[1] 陈阿三[2] 

机构地区：[1]上海大学,上海200072 [2]宁波韵升股份有限公司中央研究院,宁波315040 [3]中国科学院宁波材料技术与工程研究所,宁波315201

出　　处：《微特电机》2016年第11期23-26,33,共5页Small & Special Electrical Machines

摘　　要：齿槽转矩最小化是高性能低成本永磁盘式电机设计所追求的目标之一。以一永磁盘式轮毂电机为研究对象,围绕盘式电机齿槽转矩优化问题,提出一种定子齿顶增加辅助凸部以抑制齿槽转矩的新方法;随之推导了基于能量法与傅里叶变换的此优化策略下永磁盘式电机齿槽转矩解析式,并将其应用于齿槽转矩的定性分析;而后应用三维电磁场有限元分析软件Ansoft Maxwell模拟计算此化策略下盘式电机的齿槽转矩,并将辅助凸部参数对齿槽转矩的影响进行了详细探讨;而后根据有限元仿真结果试制了一样机并搭建了相应的测试系统,实验结果也验证了仿真的正确性。研究表明,合理的辅助凸部的引入能较大程度的抑制齿槽转矩,且新工艺的应用能显著降低盘式电机的生产制造成本。Minimizing cogging torque is one of the most significant final goals in designing disc-type permanent magnet motor which has high performance and low cost. Based on the configurations of parallel tooth with rectangle magnet for disc- type permanent magnet motor, This paper presents a new strategy which focus on the appendix of the auxiliary salient on the top stator tooth face. Meanwhile, the mathematical equation of cogging torque for the stator tooth with auxiliary salient is de- rived by using the energy method and the Fourier series analysis. And then 3D numerical FEM software Ansoft Maxwell is also applied for the simulation and computation of cogging torque for the referred strategy. Furthermore, the optimum pa- rameters of auxiliary salient are all investigated and explored in the research in detail. Based on these parameters, A proto- type of AFPM motor is fabricated and the test experiment was conducted, and the simulation result is validated by the ex- periment. As a results, the properly usage of the auxiliary salient can greatly reduce the cogging torque while the newly manufacture process provides a rather comparable low cost technique for the widely application of AFPM mator.

关 键 词：ANSOFT MAXWELL 盘式电机 轴向磁通电机 齿槽转矩 辅助凸部 优化设计 

分 类 号：TM351[电气工程—电机]