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.
出处
《控制工程》
CSCD
北大核心
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)
