摘要
针对永磁同步电机传统滑模观测器在零点切换过程中由于使用符号函数引起高频震荡以及相位滞后现象,引入改进sigmoid函数替换符号函数以减小零点切换过程中的高频抖振,同时在使用锁相环的基础上加入角度补偿算法估计转子位置以减小高频抖振产生的角度估计误差,基于Simulink建立模型并进行仿真。仿真结果表明,与传统观测器相比,新的控制方法在抖振抑制和鲁棒性方面均有较大提升。
In traditional sliding mode observers for permanent magnet synchronous motor(PMSM),high-frequency jitters and phase lags caused by using sign function during zero-point switching are observed.To address these issues,an enhanced sigmoid function was introduced to replace the sign function,so as to mitigate high-frequency jitters during zero-point switching.At the same time,an angle compensation algorithm was used in conjunction with a phase-locked loop(PLL)to estimate rotor position and reduce angle estimation errors caused by high-frequency jitters.A model was constructed in Simulink for simulation.The simulation outcomes indicate that the new control method greatly suppresses jitter and improves robustness compared to conventional observers.
作者
蔡烁
卢军
黄海波
吕文举
Cai Shuo;Lu Jun;Huang Haibo;LüWenju(School of Electrical&Information Engineering,Hubei University of Automotive Technology,Shiyan 442002,China)
出处
《湖北汽车工业学院学报》
2024年第2期42-46,共5页
Journal of Hubei University Of Automotive Technology
基金
湖北省技术创新专项项目资助(2023BEB015)。
