期刊论文

Analytical Magnetic Field Method of Permanent Magnet Synchronous Machine Considering Step-Skewed Magnets and Magnetic Slot Wedge

Zhang, Shoushou(sszhang@whu.edu.cn)

中文

电工技术学报

1000-6753

2019

34

1

11-22

10.19595/j.cnki.1000-6753.tces.171653

湖南省教育厅科学研究项目（17C1646）； 中南林业科技大学引进***人才科研启动基金项目（2015YJ007）资助；

本校为第一且通讯机构

采用轴向分段斜极和磁性槽楔是两种减小永磁同步电机转矩脉动的有效方法。建立表贴式永磁同步电机的磁场解析模型,同时考虑永磁体分段斜极和磁性槽楔两种因素的影响。针对目前精确子域磁场解析模型无法充分考虑周期性的不足,通过引入周期性边界条件重新求解定子槽、磁性槽楔、气隙和永磁体四类子域的通解,从而提高解析模型的计算效率,节约计算资源。在磁场解析模型的基础上,求解考虑分段斜极和磁性槽楔两种因素的空载反电动势和电磁转矩。通过有限元仿真分析,验证了所提解析方法的正确性。

The use of step-skewed magnets along axis and magnetic slot wedge are two effective ways to reduce the torque ripple of permanent magnet synchronous machine. The magnetic field analytical model of the surface permanent magnet synchronous machine is established, taking into account the influence of step-skewed magnets and magnetic slot wedge. Aiming at the shortcomings of the current accurate subdomain magnetic field analytical model, the periodic boundary condition is introduced to resolve the general solution of the stator slot, magnetic slot ...