基于状态观测器的异步电机定子磁链观测和速度辨识

上海大学学报(自然科学版)

基于状态观测器的异步电机定子磁链观测和速度辨识

宋文祥1，曹大鹏2，陈国呈2，陈陈1

1.上海交通大学电气工程系，上海 200240； 2.上海大学机电工程与自动化学院，上海 200072

收稿日期:2007-05-24 修回日期:1900-01-01 出版日期:2008-08-27 发布日期:2008-08-27
通讯作者: 宋文祥

Stator Flux Linkage and Speed Estimation of Induction MotorBased on Full-Order State Observer

SONG Wen-xiang1,CAO Da-peng2,CHEN Guo-cheng2,CHEN Chen1

1. Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2. School of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200072, China

Received:2007-05-24 Revised:1900-01-01 Online:2008-08-27 Published:2008-08-27
Contact: SONG Wen-xiang

摘要/Abstract

摘要： 提出一种基于全阶观测器的感应电机磁链估计方法，系统地给出了这种观测器的设计过程.仿真研究表明，该方案对电机参数变化的鲁棒性较好，磁链观测精度高.根据李雅普诺夫稳定性原理推导出基于自适应状态观测器的直接转矩控制系统速度辨识算法，其收敛速度快、精度高.基于状态观测器方案在准确观测电机磁链的同时，可实现高性能的无速度传感器运行.

关键词: 极点配置, 交流异步电机, 直接转矩控制, 状态观测器

Abstract: A method for designing full-order state observer for induction motor is proposed, in which the state variables are stator current and stator flux linkage. The design method for the state observer is given systematically. imulation results show that the observer has satisfactory estimation performance of stator flux. Based on the adaptive fullorder observer, a speed estimation method isobtained based on the Liapunov stability theorem. With the proposed full-order observer, the flux linkage of motor can be accurately observed and high performance achieved without shaft encoder.

Key words: direct torque con
trol, full-order state observer, pole arrangement, induction motor

中图分类号:

TM 464

宋文祥;曹大鹏;陈国呈;陈陈 . 基于状态观测器的异步电机定子磁链观测和速度辨识[J]. 上海大学学报(自然科学版).

SONG Wen-xiang;CAO Da-peng;CHEN Guo-cheng;CHEN Chen. Stator Flux Linkage and Speed Estimation of Induction MotorBased on Full-Order State Observer[J]. Journal of Shanghai University（Natural Science Edition）.