间接矢量控制系统中的异步电动机参数辨识

本文详细介绍了间接矢量控制系统中的异步电动机参数辨识方法.通过改进的直流试验和单相交流试验辨识出异步电动机的定子电阻、转子电阻和定转子漏感;采用转差频率控制,实现电机的空载试验,从而辨识出互感.以上三个试验可以辨识出间接矢量控制所需要的全部参数,并且精度更高,算法更简单,最后以带载试验来证明辨识的参数是准确的.本文提出的方法充分利用了全数字间接矢量控制的有利条件,简化了算法,实现了电机参数的准确辨识,从而保证了这类系统的控制性能.

An Off-Line Parameter Identification Method for Indirect Vector Controlled Induction Motor Drive

A detailed introduction to parameter identification method of inductor motors in indirect vector control system is given.The identification of stator resistance,rotor resistance,and leakage inductance is implemented through improved direct-current test and single-phase alternating-current test;and the identification of mutual inductance is implemented by no-load test on motor implemented by means of slip regulation control.All the parameters needed for indirect vector control can be identified by the three tests mentioned above,and the accuracy of the parameters identified is verified visa load test finally.The method proposed here takes advantages of full-digital indirect vector control,through which the accurate identification of motor parameter is implemented which in turn guarantees good control performance of induction motors.