关键词: 永磁同步电机, 优化, 田口法, 有限元分析

Abstract:

For the interior permanent magnet synchronous motor (PMSM) of unmanned underwater vehicles (UUV) thruster, the basic electromagnetic design parameters were obtained by equivalent magnetic method and empirical formula firstly. Moreover, an initial verification was carried out with the help of RMxprt calculation software and Maxwell electromagnetic finite element analysis (FEA) software,and the range of optimized parameters was determined. The thickness of air-gap, the width and thickness of magnet, the length and width of bridge were confirmed as optimal variables to get higher efficiency, less dosage of magnet and the minimum torque ripple. In addition, a multi-objective optimization design was proposed by using Taguchi method for the optimal design of PMSM. The FEA results verify the validity and effectiveness of the method and it well meets the multi-objective requirement.

Key words: permanent magnet synchronous motor(PMSM), optimization, taguchi method, finite element analysis