Harmonic parameter estimation of a power signal using FT-RLS algorithm

Many algorithms have been proposed for harmonic estimation to improve the power quality performance, but till today it is still a challenge for accurate estimation. In this paper an adaptive filtering algorithm called Fast Transverse Recursive Least Square (FT-RLS) is applied for the first time for estimating harmonic parameters. The algorithm has been considered to estimate the amplitudes, phases and frequency in case of time varying power signals containing harmonics in the presence of White Gaussian Noise in MATLAB simulating environment. Also comparison results with two recently proposed algorithms such as Forgetting Factor Recursive Least Square (FF-RLS) and Recursive Least Square (RLS) are presented to show the effectiveness of the proposed FT-RLS algorithm.