牵引电机无速度传感器的间接转矩控制的应用  

Application of Speed-Sensorless Indirect Torque Control for Traction Motor

作　　者：李祥飞[1,2] 邹莉华[1] 黄济荣[2] 

机构地区：[1]湖南工业大学电气与信息工程学院,湖南株洲412008 [2]株洲电力机车研究所,湖南株洲412001

出　　处：《信息与控制》2009年第1期59-63,共5页Information and Control

基　　金：湖南省自然科学基金资助项目(05JJ40112);湖南省教育厅青年基金资助项目(06C269).

摘　　要：分析了基于静止坐标系的间接转矩控制原理.在定子坐标系内分别对定子磁链与电机转矩进行计算并得到定子磁链增量值,包括定子磁链的幅值增量和相位增量,由定子磁链增量计算出异步电机定子的空间电压矢量.通过选择适当的定子磁链、转子磁链状态变量,构建一个感应电机的全阶闭环磁链观测器,实现转子转速的自适应辨识.实验结果表明,定子电流为正弦波且谐波小,电磁转矩的稳动态性能好,电机的辨识速度能够快速而准确地收敛到真实转速.The principle of indirect torque control based on quiescent coordinate is analyzed. The stator flux and motor torque are calculated in stator coordinate, and the stator flux increment vector is obtained, including phase increment and range increment. The space voltage vector of asynchronous motor stator is calculated according to the stator flux increment vector. A new full order flux state observer of induction motor is established by choosing appropriate state variables of stator flux and rotor flux, and the rotor speed can be adaptively estimated. Experiment results show that the stator current is a sine curve with little harmonics, the electromagnetic torque has good dynamic and steady response performance, and the estimated speed can accurately track the actual speed.

关 键 词：异步电机 转矩控制 全阶磁链观测器 无速度传感器 

分 类 号：TM343[电气工程—电机]