标题：The rotor topology of slotless permanent-magnet brushless DC motor
作者：Wang, Xinghua ;Yan, Shichao ;Zhang, Xiaocui ;Wang, Xiuhe ;Zhang, Chenghui
作者机构：[Wang, Xinghua ;Yan, Shichao ;Zhang, Xiaocui ;Wang, Xiuhe ] Department of Electrical Engineering, Shandong University, China;[Zhang, Chenghui ] School 更多
会议名称：2010 International Conference on Electrical Machines and Systems, ICEMS2010
会议日期：10 October 2010 through 13 October 2010
来源：2010 International Conference on Electrical Machines and Systems, ICEMS2010
关键词：End leakage; Magnetization; Rotor topology; Slotless
摘要：The air-gap field in slotless permanent magnet motor is small. Based on the surface mounted permanent magnet, this paper compares the parallel magnetization with the radial magnetization by finite element calculation. The results show that parallel magnetization can provide larger air flux in the slotless motor. The large effective air gap makes the end leakage serious. In order to resolve this problem, this paper proposes a novel rotor topology structure adding end axial magnetization permanent magnet. Results from three-dimensional (3-D) finite-element analysis prove that the structure can have a significant effect on both reducing end leakage and increasing effective air flux.