Abstract：The structure parameters of dual-stator permanent magnet synchronous motors（DSPMSM）were

optimized with finite element methodTaguchi method at the rated point，maximum torque point，and maximum speed point，respectively，aiming at the problem of large torque ripple of DSPMSM. The influence on

electromagnetic torque performance of each optimization variable was also analyzed. Then，comprehensively

considering the influence degree of different variables under each operation pointthe proportion of each

variable's influence degree to the total influence degree，the optimal combination of variables that can balance the

electromagnetic torque performance under three operation points was finally obtained. The results indicate that the

comprehensive optimization design method based on Taguchi method for multiple operation points can

significantly reduce torque rippleimprove the electromagnetic performance of DSPMSM.

      Key words：dual-stator permanent magnet synchronous motors（DSPMSM）；torque ripple；finite element

method；Taguchi method