基于全维状态观测器的永磁同步电机无差拍直接转矩控制  

Deadbeat Direct Torque Control of Permanent Magnet Synchronous Motor Based on Full-Dimensional State Observer

作　　者：孙瑞宁 丁一鸣 梁锦涛 SUN Ruining;DING Yiming;LIANG Jintao(Baoji Middle School,Baoji 721000,China;School of Mechanical and Electrical Engineering,Xidian University,Xi’an 710071,China)

机构地区：[1]宝鸡中学,陕西宝鸡721000 [2]西安电子科技大学机电工程学院,陕西西安710071

出　　处：《电子科技》2019年第4期72-76,共5页Electronic Science and Technology

基　　金：陕西省自然科学基金(2017JQ5104)~~

摘　　要：永磁同步电机传统的直接转矩控制存在磁链幅值和转矩脉动大的缺点。文中研究了基于状态观测器的无差拍直接转矩控制方案,通过构造全维状态观测器的方法来观测定子磁链幅值,消除了初始磁链误差以及电机参数对传统的观测方法影响的问题。此外针对传统控制系统产生的时滞现象,文中的研究提前一个周期计算出所需的电压矢量,实现了转矩和磁链无差拍控制。仿真结果表明,所提出的基于全维状态观测器的无差拍控制能较好地抑制磁链和转矩脉动,具有良好的控制性能。The traditional direct torque control of permanent magnet synchronous motor has the disadvantages of large flux amplitude and torque ripple.This thesis proposes a scheme of no-beat direct torque control based on state observer.The scheme can eliminate the problem of the initial flux linkage error and the influence of the motor parameters on the traditional observation method by constructing a full-dimensional state observer to observe the amplitude of the stator flux linkage.In addition,for the real lag phenomenon generated by the traditional control system,the thesis proposes to calculate the required voltage vector one cycle ahead of time,realising the deadbeat control of Torque and flux linkage.The results showed that the proposed dead-beat control based on full-dimensional state observer can suppress the flux linkage and torque ripple better and has good control performance.

关 键 词：永磁同步电机 直接转矩控制 状态观测器 无差拍 空间电压矢量调制 转矩脉动 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] TM351[自动化与计算机技术—计算机科学与技术]