摘  要：该文应用一种基于电压反馈的弱磁调速策略建立永磁同步电机的弱磁调速系统，并采用Matlab/Simulink软件搭建系统仿真模型。在建模中考虑不同工况下由于磁路饱和状态不同所引起的电机参数非线性，分析磁路饱和对电机性能的影响，仿真计算考虑磁路饱和效应时电机的弱磁调速性能。通过与理论计算结果比较，验证了仿真模型的正确性。
关键词：永磁同步电机；弱磁调速；磁路饱和；参数非线性

Abstract: The flux-weakening control system for permanent magnet synchronous motor was established using a flux-weakening control strategy based on voltage feedback. The corresponding simulation model was built adopting  Matlab / Simulink software. In the model, the non-linear characterises of parameters caused by magnetic saturation under different operations were considered. Analyzed the effects of magnetic saturation on moter performances, the speed-control performances with magnetic saturation under flux-weakening were simulated. Comparing with theoretical results, the simulation model was verified.
Key Words: Permanent magnet synchronous motor; Flux-weakening control; Magnetic saturation; Parameter nonlinearity