电力系统保护与控制2016，Vol.44Issue(7)：96-101,6.DOI:10.7667/PSPC150846
APF中一种改进的变步长LMS自适应谐波检测算法
An improved variable step-size LMS adaptive harmonic detection algorithm for active power filters
吕广强 1刘娱 1段海军1
作者信息
- 1. 南京理工大学自动化学院，江苏 南京 210094
- 折叠
摘要
Abstract
A new improved variable step-size LMS algorithm is proposed in order to enhance the tracking velocity and accuracy of harmonic detection by variable step-size LMS adaptive algorithm in the low signal-noise rate (SNR) conditions of APF. Based on the MVSS-LMS algorithm, the improved algorithm adds the estimation of forgetting-weighted sum of historical errors to control the step-size updating and dynamically regulate the range of step-size. Also, sliding forgetting-weighted window is introduced to reduce computational complexity. The convergence speed and steady state performance of the algorithm are analyzed. According to experimental results, this algorithm possesses faster dynamic response speed and decreases steady state errors in low SNR conditions of APF. It has the high anti-jamming capability and better effect of harmonic current detection.关键词
有源电力滤波器/谐波检测/变步长/最小均方/自适应算法Key words
APF/harmonic detection/variable step-size/least mean square/adaptive algorithm引用本文复制引用
吕广强,刘娱,段海军..APF中一种改进的变步长LMS自适应谐波检测算法[J].电力系统保护与控制,2016,44(7):96-101,6.
