永磁同步电动机变负载运行时的动态效率分析

Analysis of dynamic efficiency of PMSM performing under various loads

永磁同步电动机在变负载情况下运行时，并未一直稳定运行于同步速，而在负载突变时 出现振荡，使电机实际效率降低．针对这一情况，建立了永磁同步电动机的数学模型，进行了动态 仿真，研究了电机各参量对电机效率的影响，可为设计此类用途的电机提供参考。

In this paper, the dq axial model of permanent magnet synchronous machine (PMSM) is applied to the simulation of dynamical efficiency of PMSM performing under the various loads. The influence of machine's parameters on dynamic efficiency is studied and this has significant meaning for the design of PMSM applied to various load fields.