The Harmonic Current Detection Method Based on Improved SVSLMS Algorithm

LI Sheng-qing (Hunan University of Technology)
ZENG Huan-yue (Hunan University of Technology)
HE Zheng-ping (Hunan University of Technology)

Indonesian Journal of Electrical Engineering and Computer Science
Vol 12, No 2: February 2014

Harmonic current detection method plays a very important role in the harmonic compensation effect. This paper presents an improved Sigmoid Variable Step-size Least Mean Square (SVSLMS) harmonic current detecting method based on the analysis of the steady-state error generated by traditional SVSLMS, This method re-define and select the feedback error coefficient, By using a frequency-selective filter for filtering the original feedback error, to reduce the effects of harmonics on detection performance, further improve the response speed and steady precision. Simulation results verify the effectiveness and practicality of this method. DOI : http://dx.doi.org/10.11591/telkomnika.v12i2.4174