电网不平衡电压补偿的改进无差拍控制  

Improved Dead-beat Control for Network Unbalance Voltage Compensation

作　　者：郑宏[1] 苏静[1] 郭凯[1] 熊辉[1] 

机构地区：[1]江苏大学,江苏镇江212013

出　　处：《电力电子技术》2009年第4期4-6,共3页Power Electronics

基　　金：江苏省科技攻关计划(BE2007069);江苏省研究生培养创新工程(CH07B_102z)~~

摘　　要：针对电能质量中的电压不平衡问题,提出了一种新的改进无差拍控制方法。该方法在传统无差拍控制的基础上引入了参考电流观测器和状态观测器,将当前的输出电流和正弦信号的加权平均作为下一控制周期的目标量,以提高对负载参数变化的鲁棒性。仿真和实验结果表明,该方法可有效补偿不平衡电压,而且动态响应很快。A novel control method i.e. improved dead-beat control method is proposed to solve the voltage unbalance issue. The proposed method introduces the reference-current-observer and state observer on the basis of traditional deadbeat.In this novel control method the weighted average of the sinusoidal reference signal and the output current signal is chosen as the target value of the next sampling instant to improve the robustness to the load parameters change.The simulative and experimental results show that this control method can effectually compensate the unbalanced voltage,and has good robustness to the load parameters change and fast transient response.

关 键 词：电压 补偿/不平衡电压 无差拍控制 参考电流观测器 状态观测器 

分 类 号：TM714.3[电气工程—电力系统及自动化]