An Improved Variable Step Size LMS Harmonic Current Detection Method for Active Power Filter. Issue 24 (2019)

• Record Type: Journal Article
• Authors: Zhao, Haiquan; Zhang, Han; Zeng, Xiangping
• Is Part Of: IFAC-PapersOnLine. Volume 52:Issue 24(2019)
• Page Start: 304
• Page End: 307
• Publication Date: 2019
• Subjects: harmonic detection -- variable step size -- adaptive filter algorithm -- generic Sigmoid function; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2019.12.426
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: 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.