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Application of Recursive Least Squares Algorithm With Variable Forgetting Factor for Frequency Component Estimation in a Generic Input Signal

Mebtu Beza (Institutionen för energi och miljö, Elteknik) ; Massimo Bongiorno (Institutionen för energi och miljö, Elteknik)
Ieee Transactions on Industry Applications (0093-9994). Vol. 50 (2014), 2, p. 1168-1176.
[Artikel, refereegranskad vetenskaplig]

Signal estimation is important for protection, system study, and control purposes. This paper deals with the application of a modified recursive least squares algorithm, based on a variable forgetting factor, for estimation of frequency components in a generic input signal. Application areas such as synchronization and control in three- and single-phase systems for various grid conditions as well as estimation of harmonic and subsynchronous components will be discussed. Advantages of the proposed method over the available techniques in terms of estimation speed, frequency selectivity, and noise rejection capability will be described. Finally, simulation and experimental results will be used to evaluate the dynamic performance of the proposed method.

Nyckelord: Adaptive estimation, frequency estimation, least squares methods, phase, estimation, phase-locked loops (PLLs), variable forgetting factor, SYSTEMS



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Denna post skapades 2014-06-16. Senast ändrad 2015-06-18.
CPL Pubid: 199227

 

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Institutioner (Chalmers)

Institutionen för energi och miljö, Elteknik

Ämnesområden

Energi
Hållbar utveckling
Elkraftteknik

Chalmers infrastruktur