基于MRAS的交流异步电机变频调速系统研究  

Study on MRAS-based Variable-frequency Driving System of AC Asynchronous Motors

作　　者：熊祥[1] 郭丙君[1] 

机构地区：[1]华东理工大学信息科学与工程学院,上海200237

出　　处：《自动化仪表》2010年第2期51-54,共4页Process Automation Instrumentation

基　　金：上海市重点学科建设基金资助项目(编号:B504)

摘　　要：依据矢量控制的基本原理和方法,在基于转子磁场定向的旋转坐标系下,采用Matlab/Simulink模块构建了一个具有转矩、磁链闭环的交流异步电机矢量控制系统仿真模型。在此基础上,应用模型参考自适应方法,对无速度传感器矢量控制系统的转速估计进行研究,并针对常规速度辨识器中的基准模型易受积分初值和漂移影响的问题,对传统的MRAS方法进行改进,并对其进行建模仿真。仿真结果表明,该设计具有较强的可行性,且其推算转速能够很好地跟踪实测转速。In accordance with the basic principle and method of vector control, by using Matlah/Simulink module, a simulation model of vector control system that is offering torque and magnetic link for AC asynchronous motor is built based on rotor flux directional rotating coordinates. On the basis, with model reference adaptive method, the rotating speed estimation for vector control system with no-speed sensor is studied. In addition, aiming at the problem that the reference model is easily influenced by the initial value and drift of integral in normal speed recognizer, the traditional MRAS is improved, and modeling simulation is also conducted. The result of simulation verifies the feasibility of the design and the calculated rotating speed can well trace the measured rotating speed.

关 键 词：MATLAB/SIMULINK MRAS 矢量控制 变频调速系统 神经网络 无速度传感器 

分 类 号：TM343[电气工程—电机]