基于DSP的异步电机定子磁场定向解耦控制策略研究  

Research on Asynchronous Motor Stator Flux Orientation Decoupling Control Strategy Based on DSP

作　　者：杨立永[1] 陈智刚[1] 李正熙[1] 

机构地区：[1]北方工业大学电力电子与电气传动工程研究中心,北京100144

出　　处：《北方工业大学学报》2010年第3期24-28,共5页Journal of North China University of Technology

摘　　要：转子磁场定向控制中,磁通矢量的估计精度受电机参数的影响很大,基于此问题,本文给出了一种对异步电机的定子磁场定向的控制策略.根据异步电机的动态数学模型,对定子磁链和转子速度进行独立控制,这样可使定子磁链和转子速度动态解耦.此外,文中用到一种新型的积分器,此积分器可以解决纯积分环节中初值影响和直流漂移问题.这种控制方案在DSP2812的控制平台得到验证.实验结果表明,定子磁通和转子速度可实现解耦控制,其可达到令人满意的动态响应和稳态响应.The estimated accuracy of vector flux in rotor field orientation control is heavily affected by motor parameters.A control strategy for a stator field orientation in asynchronous motor is presented in this paper to solve such a problem.Stator flux and rotor speed are controlled independently according to the mathematic model of asynchronous motor in order to dynamically decouple the stator flux and rotor speed.A new kind of integrator that can be used to solve the problem of the initial value impact and DC drift in pure integral is employed in this paper.The feasibility of the new control strategy is verified on the platform of DSP2812.The experimental result shows that the decoupling control of stator flux and rotor speed is achieved and both the dynamic response and the static response are satisfactory.

关 键 词：异步电机 定子磁场定向控制 解耦控制 定子磁通观测器 

分 类 号：TP273.1[自动化与计算机技术—检测技术与自动化装置]