文章基本信息

标题：An Improved Variable Step Size LMS Harmonic Current Detection Method for Active Power Filter
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作者：Haiquan Zhao ; Han Zhang ; Xiangping Zeng 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2019
卷号：52
期号：24
页码：304-307
DOI：10.1016/j.ifacol.2019.12.426
语种：English
出版社：Elsevier
摘要：With the development of adaptive filter theory, many adaptive filtering techniques are used for harmonic current detection, and achieve some good results. But it is difficult to detect harmonic current in the low signal-to-noise ratio (SNR) condition when using conventional algorithms. Based on adaptive noise cancellation theory, this paper proposed a modify variable step size least mean square (MVSS-LMS) algorithm for harmonic current detection. The step size of the proposed method is controlled by the improved generic Sigmoid function relationship with the error signal. The MVSS-LMS has fast convergence and good tracking performance of fundamental and harmonic components from distorted signals, and simulation results prove the algorithm having a good feature.
关键词：Keywordsharmonic detectionvariable step sizeadaptive filter algorithmgeneric Sigmoid function