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.
出处
《电测与仪表》
北大核心
2012年第4期42-46,共5页
Electrical Measurement & Instrumentation
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
adaptive harmonic detection
active power filter
adaptive noise cancelling technology
harmonic current detection
variable step-size
作者简介
谢锡锋(1979-),男,汉族,广西南宁人,硕士,讲师,从事电力测量、电力通信相关方面研究。Email:xiexifeng7901@163.com
廖进(1976-),男,汉族,四川内江人,学士,副主任,从事轨道交通电气化与自动化研究。
郑立玲(1963-),女,汉族,广西桂林人,讲师,本科,从事电气自动化技术研究。
尹江红(1980-),女,毛南族,广东顺德人,硕士,讲师,从事检测技术与自动装置研究,