无轴承异步电机转子磁场定向MRAS转速辨识  

MRAS Speed Identification of Bearingless Induction Motor Based on Rotor Flux Orientation

作　　者：卜文绍[1] 祖从林[1] 王少杰[1] 

机构地区：[1]河南科技大学信息工程学院,河南洛阳471023

出　　处：《控制工程》2014年第3期334-337,342,共5页Control Engineering of China

基　　金：国家自然科学基金项目(51277053);河南省国际科技合作项目(114300510029)

摘　　要：为了准确辨识无轴承异步电机的转速,提出一种改进转子磁链估算电压模型。以改进转子磁链估计模型为基础,构建了无轴承异步电机的转子磁场定向模型参考自适应(MRAS)无速度传感器矢量控制系统,并通过Matlab/Simulink进行了系统仿真分析。仿真结果表明:基于所提出的转子磁链改进模型,可有效避免纯积分环节初值和累计误差等影响,获得较高的转速辨识精度。所提出的转子磁链辨识模型和MRAS无速度传感器矢量控制系统是有效和可行的。to identify the speed of bearingless induction motor with higher aaccurately, an improved votage - model of rotor flux - linkage is proposed. Based on the present model, a speed sensorless control system of bearingless induction motor is constructed based on rotor- flux orientation and MRAS. Then by Matlab/simulink, simulation and analysis have been made. Simulation results indicate that the integral drift of the pure integration element caused by initial value and cumulative error can be avoided and high - precision of speed identification can be achieved. The presented model of rotor flux is eaffective, and the presented MRAS speed sensorless control system of hearingless induction motor is feasible.

关 键 词：无轴承异步电机 改进模型 转子磁链定向 模型参考自适应 无转速传感器 

分 类 号：TM341[电气工程—电机]