基于自适应增益LMS算法的谐波检测新方法

刘建华; 周万鹏; 钱红稳

刘建华,周万鹏,钱红稳.基于自适应增益LMS算法的谐波检测新方法[J].电测与仪表,2014,51(10):.
liujianhua,zhouwanpeng,qianhongwen.New Harmonic detection based on LMS algorithm of adaptive gain[J].Electrical Measurement & Instrumentation,2014,51(10):.

基于自适应增益LMS算法的谐波检测新方法

New Harmonic detection based on LMS algorithm of adaptive gain

DOI：

中文关键词: LMS算法谐波检测集平均代价函数自适应增益

英文关键词:LMS algorithm ,harmonic detection ,cost function ,adaptive gain

基金项目:

作者中文名	作者英文名	单位
刘建华	liujianhua	中国矿业大学
周万鹏	zhouwanpeng	中国矿业大学
钱红稳	qianhongwen	中国矿业大学信电学院

摘要点击次数: 1857

中文摘要:

有源电力滤波器（APF）需要对谐波电流进行检测，快速准确的谐波检测方法能够提高有源电力滤波器的补偿性能。本文对自适应谐波检测法进行了研究，介绍了自适应谐波检测的基本原理，对现有的变步长迭代算法进行了阐述和分析，发现它们都存在很多不可估的参数，且系统对参数比较敏感。本文基于最小均方算法，改进了谐波检测算法，该算法从减小集平均代价函数出发，基于自适应增益，推导出新的步长迭代公式，通过Matlab仿真和DSP实验验证了该算法的有效性。

英文摘要:

The active power filter must get the harmonic current first. The compensation performance can be improved by fast and accurate harmonic detection .The harmonic detection method of adaptive filter is studied in this paper. Then we introduced the basic principle of adaptive harmonic detection, then expound and analyzed the existing variable step-size iterative Algorithm. There are many parameters can’t be estimated of them, and the system is very sensitive to the parameters. Based on the LMS algorithm, this paper improved the harmonic detection algorithm. The algorithm develop from reducing the cost function, deduce the new step iterative formula based on adaptive gain. The Matlab simulation and DSP experiment improved the effectiveness of this algorithm.

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