A New Variable Step-size LMS Algorithm of Harmonic Current Detection

机译：一种新的变步长LMS谐波电流检测算法

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摘要

In order to improve the quality of electric energy, the harmonics of power system is restrained and compensated, which effects is determined by precision of detection and its dynamic response characteristics. Considering the low Signal-to-Noise characteristic of the load current, a novel variable step-size LMS (least mean square) algorithm of harmonic current detection is introduced in this paper.This algorithm uses the coherence average estimation of T(n) to control the updating of the step size,where T(n) is the approximate normalization of the error signal to the total signal. It can provide a fast dynamic response while ensuring high detecting precision, and be fit for harmonic current detection of single-phase and three-phase power system. Based on the MATLAB simulation and DSP experiment of the load current, both results have verified the effectiveness.

机译：为了提高电能质量，对电力系统的谐波进行了抑制和补偿，其效果取决于检测的精度及其动态响应特性。考虑到负载电流的低信噪比特性，本文提出了一种新颖的变步长LMS（最小均方）谐波电流检测算法，该算法利用T（n）的相干平均估计控制步长的更新，其中T（n）是误差信号相对于总信号的近似归一化。它可以在确保高检测精度的同时提供快速的动态响应，并且适合于单相和三相电力系统的谐波电流检测。基于MATLAB的负载电流仿真和DSP实验，两个结果都证明了其有效性。

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来源
《Informationization, Automation and Electrification in Agriculture》|2008年|379-384|共6页
会议地点 Zhengjiang(CN);Zhengjiang(CN)
作者
W.S.W.Trollope; rnL.A.Trollope; rnC.de B.Austin; rnA.C.Held;
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作者单位

ZHOU Xiao-xia@School of Electricity and Information Engineering, Jiangsu University, Zhenjiang, China, 212013--;

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会议组织
原文格式 PDF
正文语种 eng
中图分类农业现代化建设;
关键词
Harmonic current detection; Adaptive filter; Variable Step-size; Approximate normalization;

机译：谐波电流检测自适应滤波器可变步长近似归一化;

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4. A New Variable Step-size LMS Algorithm of Harmonic Current Detection [C] . International Conference on Informationization, Automation and Electrification in Agriculture . 2008

机译：一种新的谐波电流检测变量步长LMS算法
5. A blind equalization algorithm with variable step-size procedure. [D] . Alhmouz, Omar Mufid. 2006

机译：具有可变步长过程的盲均衡算法。
6. MREIT experiments with 200μA injected currents: a feasibility study using two reconstruction algorithms SMM and Harmonic BZ [O] . V E Arpinar, M J Hamamura, E Degirmenci, -1

机译：200μA注入电流的MREIT实验：使用两个重建算法SMM和谐波BZ的可行性研究
7. A Unified Analysis Approach for LMS-based Variable Step-Size Algorithms [O] . Saeed, Muhammad Omer Bin 2015

机译：基于Lms的变步长算法的统一分析方法

A New Variable Step-size LMS Algorithm of Harmonic Current Detection

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