基于改进自适应谐波检测法的有源电力滤波器  

Active Power Filter Based on Improved Adaptive Harmonic Detection

作　　者：谢锡锋[1] 廖进[2] 郑立玲[1] 尹江红[1] 

机构地区：[1]广西水利电力职业技术学院电力工程系,南宁530023 [2]西南交通大学电气工程学院,成都610031

出　　处：《电测与仪表》2012年第4期42-46,共5页Electrical Measurement & Instrumentation

摘　　要：针对传统自适应谐波检测方法在收敛速度和稳态精度之间存在的矛盾,提出了一种改进的新型自适应谐波电流检测方法。该方法基于自适应噪声对消理论,通过引入动态因子项自适应地调整算法的步长,引入动量项加快了权值的收敛,引入静态项和自相关误差项消除了不相关噪声序列的干扰,很好地解决了收敛速度与稳态精度的矛盾,进一步提升了谐波检测效果。仿真及实验结果证明了该改进检测法的可行性和有效性。In allusion to the contradiction between convergence speed and steady state accuracy oftraditional adaptive harmonic current detection algorithm,a novel adaptive harmonic detection algorithm based on the adaptive interference canceling theory is presented.The algorithm controls the updating step-size by introducing the dynamic factor,increases the Weight-value convergence speed by addding momentum term,and eliminates the impact of uncorrelated noise sequences by static and autocorrelation of error factor.This method solves the contradiction between convergence speed and steady state accuracy and has good detection effects.Simulation and experimental results verify the feasibility and reliability of the method proposed.

关 键 词：自适应谐波检测 有源电力滤波器 自适应噪声对消技术 谐波电流检测 变步长 

分 类 号：TM74[电气工程—电力系统及自动化]