基于新型滑模观测器的PMSM无传感器控制  

Sensorless control of PMSM based on a novel sliding mode observer

作　　者：余莉[1] 张政[1] 沈喆磊 YU Li;ZHANG Zheng;SHEN Zhe-lei(School of Automation,Nanjing University of Information Engineering,Nanjing 210044,China)

机构地区：[1]南京信息工程大学自动化学院,南京210044

出　　处：《信息技术》2024年第11期51-56,62,共7页Information Technology

基　　金：国家自然科学基金(51507082)。

摘　　要：针对永磁同步电机无传感器控制中传统滑模观测器产生的抖振现象,提出新型滑模观测器。通过引入新型饱和函数代替符号函数,采用积分滑模面和可变增益,以抑制抖振,通过Lyapunov定理对其进行稳定性分析,并结合锁相环技术提取转速和转子位置信息。仿真结果表明:新型滑模观测器能够减小抖振,提升系统对转速和转子位置的估计精度。A novel sliding mode observer is proposed to address the chattering phenomenon caused by traditional sliding mode observers in sensorless control of permanent magnet synchronous motors.By introducing a new saturation function instead of a symbolic function,and adopting an integral sliding surface and variable gain,chattering can be suppressed.Stability analysis is performed using Lyapunov theorem,and phase-locked loop technology is used to extract speed and rotor position information.The simulation results show that the new sliding mode observer can reduce chattering and improve the system’s estimation accuracy of speed and rotor position.

关 键 词：永磁同步电机 新型饱和函数 积分滑模面 可变增益 滑模观测器 

分 类 号：TM351[电气工程—电机]