收稿日期: 2004-06-25
修回日期: 2004-10-14
网络出版日期: 2005-07-15
The MRAS Flux Observer with Stator Voltage Error Compensator
Received date: 2004-06-25
Revised date: 2004-10-14
Online published: 2005-07-15
在电压型逆变器供电的交流异步电机驱动系统中,应用模型参考自适应(MRAS)磁链观测器进行磁链观测时,常用定子电压给定值代替实际值,从而带来幅值误差和直流偏值,造成磁链观测误差,影响电机低速运行的稳定性.为了提高交流异步电机无速度传感器矢量控制的低速性能,提出了一种定子电压幅值和直流偏置补偿办法,仿真实验验证了所提出方法的有效性
关键词： 模型参考自适应系统(MRAS); 交流异步电机; 无速度传感器矢量控制; 定子电压误差
陈桂兰 , 温旭辉 , 张立伟 . 具有定子电压误差补偿的MRAS磁链观测器[J]. 中国科学院大学学报, 2005 , 22(4) : 488 -493 . DOI: 10.7523/j.issn.2095-6134.2005.4.014
When the induction motor system is driven by the voltage inverter, the MRAS (Model ReferenceAdaptive System) flux observer can be used to observe flux. In such cases, the reference value of the stator voltage, not the practical value, is used, which will cause amplitude error and DC offset, and affect the stability of low speed directly. This paper presents a new compensat ion method for stator voltage amplitude and DC offset, which can improve the performance of the speed sensor-less vector control of induction motor. The validity of the proposed method is also verif ied by simulation.
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