基于瞬时无功功率的感应电机矢量控制仿真研究  

MRAS Method for Sensorless Vector Control of Induction Motor Based on Instantaneous Reactive Power

作　　者：张莹[1] 黄科元[1] 黄守道[1] 肖磊[1] 

机构地区：[1]湖南大学电气与信息工程学院,长沙410082

出　　处：《系统仿真学报》2012年第10期2141-2145,共5页Journal of System Simulation

基　　金：国家自然科学基金(50907020);高等学校博士学科点专项科研基金(新教师基金)(200805321038)

摘　　要：在分析感应电机矢量控制模型的基础上,借助于Matlab强大的仿真建模能力,利用Simulink中内含的功能元件,实现了一种基于瞬时无功功率模型参考自适应(MRAS)的感应电机无速度传感器矢量控制系统的建模仿真,并利用小信号分析法分析了系统的稳定性,模型中利用瞬时无功功率的变化来推算转速,提高了系统的动态性能。SIMULINK具有良好的用户界面和强大的功能,在该环境下结合电气系统模块库进行仿真,具有建模简单、结构直观、操作灵活等优点,仿真结果验证了基于瞬时无功功率的感应电机无速度传感器矢量控制系统具有良好的控制性能和稳定性。A simulation model of sensorless vector control induction motor in the Simulink environment of the Matlab simulation software based on the variation of transient reactive power was established in terms of the mathematics models of the motor. Both the models of the system are in stationary reference frame, and the MRAS was formed with instantaneous reactive power. A mathematic model was derived, and the reliability of the speed estimator was performed in speed-torque domain using small signal analysis. Combined with Power System Block set, the system can be easily modeled, the operation is flexible, and all these traits are fully displayed.

关 键 词：感应电机 矢量控制 模型参考自适应(MRAS) 瞬时无功功率 SIMULINK 

分 类 号：TM743[电气工程—电力系统及自动化]