【摘要】 针对永磁同步电机在运行过程中电感参数受到温度、电流等影响发生变化导致电流解耦控制效果下降问题，提出一种基于有限时间扩张状态观测器(FTESO)的永磁同步电机电流解耦控制方法。首先，建立永磁同步电机电机的数学模型，基于此详细分析了LESO的不足，并提出采用FTESO方法观测以耦合电压为主的集总扰动，以实现电流环的解耦控制，提高系统的动态解耦性能。基于有限时间收敛定理证明了FTESO的有限时间收敛性能。最后通过仿真验证了所提方法与LESO相比具有更好的解耦效果。更多还原

【Abstract】 In order to solve the problem that the inductance parameters of the permanent magnet synchronous motor are affected by temperature and current during operation,the current decoupling control effect decreases,a current decoupling control method for permanent magnet synchronous motors based on finite-time extended observer( FTESO) was proposed. Firstly,established the mathematical model of the permanent magnet synchronous motor( PMSM). Based on this,the shortcomings of linear expansion state observer( LESO) were analyzed in detail,and the FTESO method was proposed to observe the lump disturbance mainly based on the coupling voltage,in order to achieve decoupling control of the current loop and improve the dynamic decoupling performance of the system. The finite-time convergence performance of FTESO was proved based on the finite-time convergence theorem. Finally,the simulation verified that the proposed method has a better decoupling effect compared with LESO.更多还原