›› 2015, Vol. 28 ›› Issue (12): 29-.

• 论文 • 上一篇    下一篇

基于拉格朗日插值预测的STATCOM无差拍控制

夏天宇,杨文焕,石俊,夏明豪   

  1. (上海理工大学 光电信息与计算机工程学院,上海 200093)
  • 出版日期:2015-12-15 发布日期:2015-12-15
  • 作者简介:夏天宇(1988—),男,硕士研究生。研究方向:无功补偿等。E-mail:tianyuskyy@163.com。杨文焕(1954—),男,教授。研究方向:轨道交通技术等。

Simulation of Dead-beat Control of STATCOM Based on Lagranges Interpolation Current Prediction

XIA Tianyu,YANG Wenhuan,SHI Jun,XIA Minghao   

  1. (School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)
  • Online:2015-12-15 Published:2015-12-15

摘要:

为解决在无功变化剧烈的电气环境中,基于PI控制的 STATCOM要经过若干工频周期才能完成跟踪,无法补偿剧烈变化的无功电流的问题。在改进传统的无差拍控制离散数学模型,运用STATCOM 状态方程的解,建立其离散数学模型,再提出一种基于拉格朗日插值原理的电流预测方法,并进行控制系统的设计。仿真结果表明,基于前述原理的控制系统,能在一个工频周期内实现无功电流的跟踪,适应无功变化剧烈的电气环境。

关键词: 无差拍控制;拉格朗日插值;电流预测;STATCOM;SVPWM

Abstract:

As to resolve the problem of poor performance of STATCOM due to the inefficient performance of PI controller in drastic fluctuating electric environment,a precise discrete mathematical model of the STATCOM is built and a current prediction method originated from Lagranges interpolation is proposed,which attain a high quality prediction of current,consequently resolving control error caused by time-delay due to digital calculation and improving the instantaneity of the current detection,according to the simulation in Matlab.

Key words: deadbeat;control Lagranges interpolation;current-prediction;STATCOM

中图分类号: 

  • TP391