基于精确子域模型法的表贴式直线电机永磁体磁场解析
Analytical modeling of magnetic field of permanent magnet in surface mounted linear motors based on exact subdomain model method
邵鹏程 1许金 1梁清心 1张逸超1
作者信息
- 1. 海军工程大学 电磁能技术全国重点试验室,武汉 430033
- 折叠
摘要
在永磁同步电机的设计工作中,磁场解析计算是一项十分重要的工作.为此,针对表贴式直线电机永磁体的磁场开展了解析建模工作.首先,将伪周期法与精确子域法相结合,求解出了在特定伪周期下的永磁体虚拟阵列的磁场分布解析式;其次,使伪周期趋近无穷,利用傅里叶级数与傅里叶变换之间的对应关系,求得单个永磁体的磁场分布解析式,并借助有限元方法仿真验证了其准确性;再次,利用永磁体的磁场分布解析式,推导了一类表贴式直线电机的永磁体阵列的磁场分布解析式,实现了对于表贴式直线电机磁场的精确刻画;最后,利用有限元方法仿真验证了准确性.
Abstract
In the design of permanent magnet synchronous motors,magnetic field analysis and calcu-lation is a very important task.The magnetic field modeling of permanent magnets in surface mounted linear motors has been studied.Firstly,by combining the pseudo period method with the precise sub-domain method,the analytical expression for the magnetic field distribution of the virtual array of permanent magnets under specific pseudo periods was solved.Then,by rendering the pseudo period-virtually infinite,and using the corresponding relationship between Fourier series and Fourier trans-form,the analytical formula of the magnetic field distribution of a single permanent magnetis ob-tained,and its accuracy was verified by using the finite element method simulation.Furthermore,by using the analytical expression for the magnetic field distribution of permanent magnets,the magnetic field distribution of a type of surface mounted linear motor's permanent magnet array analytical ex-pression was derived,achieving accurate characterization of the magnetic field of the surface mounted linear motor.Finally,the accuracy was verified through finite element simulation.
关键词
精确子域模型法/伪周期法/傅里叶逆变换Key words
exact subdomain model method/pseudo periodic method/inverse Fourier transform引用本文复制引用
出版年
2024
NETL
NSTL
万方数据