一种基于分段定子的直线永磁磁通切换电机结构及其优化方法  

A Segment-Stator Based Flux-Switching Permanent Magnet Linear Machine and Its Structure Optimization Method

作　　者：郝雯娟[1,2] 邓智泉[1] 

机构地区：[1]南京航空航天大学自动化学院,江苏南京211106 [2]南京航空航天大学金城学院,江苏南京211106

出　　处：《电机与控制应用》2015年第12期1-6,共6页Electric machines & control application

基　　金：国家自然科学青年基金项目(51407090)

摘　　要：直线永磁磁通切换(LFSPM)电机动子结构简单,功率密度高,以其电枢绕组和永磁体都在动子的结构特点,特别适合长定子应用场合来降低成本。研究了一种分段定子结构的LFSPM电机,其结构的主要特点是可以减小电机的齿槽力,同时兼顾绕组基波幅值并减小绕组的谐波含量。在分析了电机齿槽力和线圈磁链与分段定子错位位移之间的关系后,根据不同电机结构优化选择了合适的错位位移。最后,利用ANSYS有限元分析对采用所提出的分段定子结构的2台LFSPM电机进行仿真验证,仿真结果证明了2台电机所选错位位移合理有效,所研究电机的齿槽力相对较小,相绕组磁链波形较正弦。The linear flux switching permanent magnet （LFSPM） machine has simple stator structure and high torque density. This kind of machine is suitable for long stator application due to that both the PMs and armature winding are on the short mover. In this paper, a segment stator based LFSPM machine is investigated, with the merits of this structure is reducing the detent force and considering the amplitude of the flux-linkage, besides, the harmonic components can also be reduced. The relationship between the stagger displacement and the detent force as well as the coil flux-linkage, respectively, are analyzed, a suitable stagger displacement is chosen according to the reduction of detent force and the consideration of the flux-linkage amplitude. The analysis results by FEA verifies the effectiveness of the proposed structure.

关 键 词：直线永磁磁通切换电机 分段定子 错位位移 齿槽力 磁链 

分 类 号：TM351[电气工程—电机]