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。
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.
作者
吴澳梦
赵世伟
WU Aomeng;ZHAO Shiwei(School of Electric Power,South China University of Technology,Guangzhou 510641,China)
出处
《微电机》
2025年第11期1-6,共6页
Micromotors
关键词
永磁同步电机
电流解耦
有限时间收敛性
扩张状态观测器
permanent magnet synchronous motor
current decoupling
finite-time stability
extended state observer
