基于自适应滤波器的电网谐波电流预测法  

Harmonic prediction method based on adaptive filter

作　　者：粟梅[1] 王莉娜[1] 张泰山[1] 罗安[1] 

机构地区：[1]中南大学信息科学与工程学院,湖南长沙410083

出　　处：《控制与决策》2004年第12期1429-1432,共4页Control and Decision

基　　金：国家科技攻关项目(2002BA218C).

摘　　要：提出一种新的基于LMS算法自适应滤波器的有源电力滤波器(APF)参考电流的预测方法,针对传统LMS算法的缺陷(如收敛速度慢、对非平稳输入信号的适应性差等)作了3点改进,这些改进措施可有效提高自适应滤波器的综合性能.仿真与实验结果证明,采用该方法可有效减小延时对APF补偿效果的影响.A new method based on adaptive filter to predict the reference current of active power filter is presented, To solve the drawbacks of the traditional LMS algorithm, such as slow convergence and poor adaptability to the non-smooth input, three modifying measures are proposed, which effectively improves the comprehensive performance of the adaptive filter. Simulation and experimental results show the effect of the proposed method to alleviate the detrimental influence of time delay inherent in the digital control system on the compensation effect of APF.

关 键 词：有源电力滤波器 自适应滤波 谐波预测 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程] TM922[自动化与计算机技术—控制科学与工程]