基于改进定子磁链观测器的MRAS转速估算方法  

A MRAS Speed Estimation Method Based on the Improved Stator Flux Observer

作　　者：蔡文皓[1] 单成龙 范中洋 

机构地区：[1]西安科技大学,西安710054

出　　处：《微特电机》2016年第7期63-65,71,共4页Small & Special Electrical Machines

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.

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 

分 类 号：TM343[电气工程—电机]