摘要
电机转速的估计算法是无速度传感器矢量控制研究的核心。在无速度反馈的应用中,特别是对于大功率的三相异步电机,由于无法判断异步电机的运行状态,特别是运行速度往往会导致电机过流,从而损坏电机及其驱动设备。因此,采用模型参考自适应方法(MRAS)对电机转速进行估计,简单易行,无需增加成本,可以应用于三相异步电动机无速度控制和无速度重启的速度跟踪控制。
The algorithm of motor speed estimation is the core of speed sensorless vector control.In the application of speed feedback free,especially for the high-power three-phase asynchronous motor,because it is unable to judge the running state of the asynchronous motor,especially the running speed often leads to over-current of the motor,thus damaging the motor and its driving equipment.In this paper,the model reference adaptive method(MRAS)is used to estimate the motor speed.This method is simple and can be applied to speed tracking control of three-phase asynchronous motor without speed control and speed restart.
作者
常国祥
张俊国
CHANG Guo-xiang;ZHANG Jun-guo(School of Electrical and Control Engineering,Heilongjiang University of Science and Technology,Harbin 150022,China)
出处
《通信电源技术》
2020年第8期38-42,共5页
Telecom Power Technology
