摘要
直线永磁磁通切换电机的电枢绕组和永磁体都在动子上,而定子是凸极铁心,在长定子场合,如轨道交通,可以降低成本,具有很大的应用潜力。对一种模块化直线永磁磁通切换(MLFSPM)电机的结构进行改进,提出了一种基于定子齿错位的MLFSPM电机,主要目的是减小电机的定位力的同时,兼顾绕组基波幅值并减小绕组的谐波含量。在分析了电机定位力和线圈磁链与错位角之间的关系后,针对同时减小定位力和磁链谐波含量的目标,为电机选择了合适的错位角。最后,利用ANSYS有限元分析,对所提出的定子齿错位结构的MLFSPM电机进行仿真验证,仿真结果证明了所选错位角合理有效,所研究电机的定位力相对较小,相绕组磁链波形较正弦。
The linear flux switching permanent magnet （LFSPM） machine, with both the PMs and armature windings on the short mover and the long stator made of iron-core, exhibits low cost and is suitable for urban rall transit applications. In this paper, the structure of a modular LFSPM machine was improved, and a modular LFSPM machine with a twisted-stator structure was proposed, aiming to reduce the machine cogging force without amplitude reduction of the flux-linkage the, besides, the harmonic components can also be reduced. The relationships between the twisted angle and the cogging force as well as the coil flux-linkage, respectively, were analyzed, a suitable twisted angle was chosen according to the reduction of cogging force and the consideration of the flux-linkage amplitude. The analysis results by FEA verifies the effectiveness of the proposed structure.
出处
《微特电机》
北大核心
2015年第11期14-17,26,共5页
Small & Special Electrical Machines
关键词
直线永磁磁通切换电机
定子齿错位
永磁体方向充磁
定位力
磁链
linear flux switching permanent magnet （LFSPM） machine
twisted stator
opposite magnetization direction
cogging force
flux-linkage
