异步电动机自适应矢量控制系统的一种仿真方法

Simulating method of adaptive vector control asynchronous motor system

针对异步电动机矢量控制系统在电动机参数变化时性能下降的问题,提出了一种拥有转子磁链自适应观测器的矢量控制方案,设计出转子磁链自适应观测器,构成转速与磁链闭环的矢量控制系统.利用SIMULINK仿真工具建立了仿真模型,并对系统进行了仿真研究。 分析结果可知,这种转子磁链自适应观测器的设计方法是有效的。

To solve the problem of performance degradation due to parameter variations in the vector control of an asynchronous motor,this paper presents a new method of designing adaptive rotor flux observer for vector control system. The adaptive rotor flux observers has been designed by using the parameter adaptive algorithm with a strict positive real error model,and the vector control closed-loop system of speed and flux has been constituted by using the observer. Simulation research of the system is done by constructing simulation model of the adaptive system using SIMULINK simulation tool, the effectiveness of the design method of rotor flux observer is verified by the results of the simulation.