一种用于间接转矩控制系统的磁链观测方法  

A Kind of Flux Observation Method Applied to Indirect Stator-quantity Control System

作　　者：李庆川 樊生文[2] 冉正云[3] 

机构地区：[1]安阳集团公司职工大学,安阳456350 [2]北方工业大学机电工程学院,北京100041 [3]北京和利时系统工程有限公司,北京100029

出　　处：《微电机》2009年第2期22-24,82,共4页Micromotors

摘　　要：间接转矩控制系统中涉及到定、转子磁链的估计。传统的观测方法由于受系统不确定性的影响,很难获得满意的效果。利用滑模方法鲁棒性强的特点,设计了滑模观测器来估计转子磁链。通过实时求解一个极点配置问题,将观测器的切换增益变换为转子速度的自适应函数,从而保证了观测器在整个运行范围内具有较强的鲁棒性。将所设计的观测器应用于感应电动机间接转矩控制系统,其中的定子磁链估计由转子磁链和定子电流估计量来构造。实验结果校验了方法的有效性。Indirect stator-quantity control system involved the estimation of stator and rotor flux, and it was difficult to achieve satisfactory performance for traditional observation method because of the uncertainty effects. The paper made full use of strong robustness of sliding mode method and designed sliding mode observer to estimate rotor flux. Observer＇s switch gain became rotor speed adaptive function by solving a polar replace problem, which guaranteed stronger robustness of the observer within the whole operating range. The proposed observer was applied to ISC system of induction motor, in which stator flux was established by the estimated rotor flux and stator current. Experiment verified the of effectiveness.

关 键 词：转子磁链 滑模观测器 间接转矩控制 磁链估计 感应电动机 

分 类 号：TM346[电气工程—电机]