摘要
由于传统模型参考自适应(MRAS)系统在低速时转速估算不准,以及对电机参数变化敏感,提出一种改进转子磁链的估算方法。通过仿真实验表明,该方法对于电机运行过程中参数的变化有较好的鲁棒性,低速时也能准确地估算磁链及转速,使系统稳定运行。
Due to the inaccurate estimation of rotation rate made by traditional induction motor in motor speed sensorless system at low speeds, as well as it shows its sensitivity over changes of parameter of motors, a modified model which referenced from an adaptive method （MRAS） for estimate rotor flux was presented. The simulation reveals that the method shows its robustness for changes of motor in operating process, rotation rate and flux can also be estimate accurately at low speeds, which can ensure the stability of whole system.
出处
《微特电机》
北大核心
2015年第9期81-83,99,共4页
Small & Special Electrical Machines
关键词
感应电动机
无速度传感器
模型参考自适应
矢量控制
induction motor
speed sensorless
model reference adaptive system （MRAS）
vector Control
