摘要
提出一种在定子坐标系下以定子侧变量为状态变量的转速估算方法,减少系统的复杂性,完全不受转子侧参数影响。在此基础上将改进低通滤波器作为定子磁链观测器,大大减小系统的直流偏置误差和初始值误差。通过仿真验证了该方法具有较强的鲁棒性并能很好地估算转速,提高磁链观测精度。
A rotator speed estimation method which used the stator＇s variables as state variables in stator coordinates was addressed. It reduced the complexity of system design and was totally independent of the rotator parameters. The improved LPF was utilized as stator flux observer. As a result,the DC bias error and initial values＇ error were greatly reduced.It was verified by the simulation system that the method had strong robustness,good speed estimation and high flux observe accuracy.
出处
《微特电机》
北大核心
2016年第7期63-65,71,共4页
Small & Special Electrical Machines
关键词
异步电机
无速度传感器
直接转矩控制
低通滤波器
模型参考自适应系统
asynchronous motor
speed sensorless
direct torque control
low-pass filter
model reference adaptive system（MRAS）
