摘要
研究了一种基于MRAS的永磁同步电机速度辨识方案:将永磁同步电机的电流模型作为参考模型,估算的定子磁链模型作为可调模型,设计了自适应律同时辨识电机转速和定子电阻。利用该方案建立了永磁同步电机的无速度传感器矢量控制系统。仿真和实验结果表明,该方案在高、低速以及转速突变时均能准确检测转子的速度以及在线辨识定子电阻,系统具有良好的静、动态调速性能。
A method of estimating the rotor speed based on model reference adaptive system (MRAS) for permanent magnet synchronous motor (PMSM) is presented. In this method, current model of PMSM is regarded as reference model while estimated stator flux model is considered as adjustable model. The adaptive laws are designed so that rotor speed and stator resistance are estimated at the same time. And then, the sensorless vector control system of PMSM is set up based on this speed estimating approach. Simulation and experimental results prove that the proposed method is capable of precisely estimating the rotor position and speed and stator resistance under the conditions of high or low speed and speed step response. It also achieves good static and dynamic speed-adjustable performance.
出处
《电工技术学报》
EI
CSCD
北大核心
2007年第10期30-34,41,共6页
Transactions of China Electrotechnical Society
基金
台达电力电子科教发展基金资助项目
关键词
永磁同步电机
模型参考自适应
无速度传感器
Permanent magnet synchronous motor, model reference adaptive system, sensorless
作者简介
齐放 男,1982年生,硕士研究生,研究方向为永磁同步电机无速度传感器技术。
邓智泉 男,1969年生,教授,博士生导师,研究方向为无轴承电机、高速电机、交流电机控制。