感应电机变增益PI速度控制器的设计  

Design of a Variable Gain PI Speed Controller of Induction Motor

作　　者：盛洁波[1] 李建军[1] 

机构地区：[1]湖南工学院基础课教学部,湖南衡阳421002

出　　处：《电气传动》2009年第9期14-20,共7页Electric Drive

基　　金：湖南省教育厅科技项目(06C042);湖南工学院2008年科研项目(HY08026);国家自然科学基金重点项目(60634020);博士点基金项目(20050533028)

摘　　要：针对感应电机无速度传感器间接磁场定向控制系统,利用感应电机的时变参数模型的降阶处理,提出了一种非线性鲁棒高增益观测器,这一观测器只需要电机的定子电压和电流,能同时观测电机的状态量和转子时间常数等参数,鲁棒性好,计算量少,易于适时在线实现。为减少系统在启动阶段的超调,提出了一种变增益的PI速度控制器,该方法简单,不但能实现PID参数的在线调整,而且工程实现简单。仿真和试验验证了本方案的可行性。Based on the reduced order of the IM model of the sensorless indirect field oriented control （IF- OC） system, the estimation of the rotor fluxes and time constant with the high gain observer （HGO） using only the stator currents and voltages was presented. This reduced order model based observer offers many advantages, such as good robustness, reduce the computation, real time identification of the IM. In order to reduce the speed overshot during the startup, a variable gain PI speed controller was proposed, this method is simple, not only tuning the PID parameters online, but also the engineering implementation is very easy. Simulation and experiment results are provided to prove the effectiveness of the proposed method.

关 键 词：感应电机 磁场定向控制 高增益观测器 参数辨识 变增益PI控制 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]