摘要
提出一种高鲁棒性的永磁同步电动机定子磁链滑模观测器。该观测器借助于滑模控制理论,以定子电流和定子磁链为状态变量,利用电流观测误差对定子磁链观测进行校正。实验结果表明,观测器对模拟量采样通道直流偏置、电机参数的变化具有较强的鲁棒性,构成的直接转矩控制系统调速范围较宽。
A novel stator flux linkage estimator with wider adjustable speed range and higher robustness is investigated in this paper based on sliding mode control theory.The stator current and stator flux linkage are used as state variables and the stator flux linkage estimate is adjusted with the error of current estimate.The experimental results show that the presented flux lingkage estimator is insensitive to the DC offset of the current sampling channels and parameters of motor,and the permanent magnet synchronous motor(PMSM) direct torque control(DTC) system has wider adjustable speed range.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2010年第18期97-102,共6页
Proceedings of the CSEE
基金
福州大学人才引进基金(DQ2007-7XRC-0733)
福州大学科技发展基金(2008-XQ-17)~~
关键词
永磁同步电动机
直接转矩控制
定子磁链观测器
滑模
permanent magnet synchronous motor(PMSM)
direct torque control(DTC)
stator flux linkage estimator
sliding mode