Estimating the fundamental frequency and harmonic parameters is basic for signal modelling in a power supply system. Differing from the existing parameter estimation algorithms either in power quality monitoring or in harmonic compensation, the proposed algorithm enables a simultaneous estimation of the fundamental frequency, the amplitudes and phases of harmonic waves. A pure sinusoid is obtained from an input multiharmonic input signal by finite-impulse-response (FIR) comb filters. Proposed algorithm is based on the use of partial derivatives of the processed signal and the weighted estimation procedure to estimate the fundamental frequency, the amplitude and the phase of a multi-sinusoidal signal. The proposed algorithm can be applied in signal reconstruction, spectral estimation, system identification, as well as in other important signal processing problems. The simulation results verify the effectiveness of the proposed algorithm.

JO - Metrology and Measurement Systems L1 - http://sd.czasopisma.pan.pl/Content/90017/PDF/journal10178-VolumeXIXIssue4_07.pdf L2 - http://sd.czasopisma.pan.pl/Content/90017 IS - No 4 EP - 702 KW - band-limited signals KW - fundamental frequency and Fourier coefficient estimation KW - signal reconstruction KW - finite-impulse-response (FIR) comb filter. ER - A1 - PetroviÄ‡, Predrag B. PB - Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation JF - Metrology and Measurement Systems SP - 693 T1 - Algorithm for Simultaneous Parameter Estimation of A Multiharmonic Signal UR - http://sd.czasopisma.pan.pl/dlibra/docmetadata?id=90017 DOI - 10.2478/v10178-012-0061-4