基于有限时间干扰观测器的IM预测电流控制  

Predictive Current Control of IM Based on Finite Time Disturbance Observer

作　　者：白聪 尹忠刚[1] 罗培恩 BAI Cong;YIN Zhong-gang;LUO Pei-en(School of Electrical Engineering,Xi'an University of Technology,Xi'an 710054,China)

机构地区：[1]西安理工大学,电气工程学院,陕西西安710054

出　　处：《电力电子技术》2025年第4期1-5,共5页Power Electronics

基　　金：国家自然科学基金(52177194,52107206);陕西省自然科学基金青年项目(2024JC-YBQN-0510)。

摘　　要：预测电流控制(PCC)具有响应迅速、结构简单、易于实现等优点,近年来在交流电机传动领域已得到广泛应用。然而,传统PCC方法是一类基于被控对象模型的方法,感应电机(IM)运行过程中会不可避免地存在参数变化和模型失配导致的电流静差及系统振荡问题,进而影响其在高性能变频调速系统中的应用。针对该问题,本文提出了一种基于有限时间干扰观测器(FTDO)的IM PCC方法,基于IM的数学模型设计了电流环FTDO,实时观测电流环干扰并进行前馈补偿,进而提高系统抗参数变化和模型失配的鲁棒性。实验结果表明,基于FTDO的IM PCC系统具有良好的电流动态响应和更强的参数鲁棒性。Predictive current control(PCC)has the advantages of rapid response,simple structure,and easy implementation,and has been widely used in the field of AC motor transmission in recent years.However,the traditional PCC method is a type of method based on the controlled object model.Therefore,during the operation of the induction motor(IM),there will inevitably be parameter changes and model mismatches leading to current static errors and system oscillations,which will affect its application in high-performance variable frequency speed control systems.In response to this issue,this paper proposes an IM PCC method based on a finite time disturbance observer(FTDO).A current loop FTDO is designed based on the mathematical model of IM to observe the current loop disturbance in real time and perform feedforward compensation,thereby improving the robustness of the system against parameter changes and model mismatches.The experimental results show that the IM PCC system based on FTDO has good current dynamic response and stronger parameter robustness.

关 键 词：感应电机 有限时间干扰观测器 预测电流控制 鲁棒性 

分 类 号：TM346[电气工程—电机]