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Constrained frequency domain algorithms for determination of parameters of fundamental sinewave of signals

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3 Author(s)
Eichhorn, K.Fr. ; Dept. of Electr. Eng., Tech. Univ. Wroclaw, Poland ; Lobos, T. ; Ruczewski, P.

The method presented enables the design of digital FIR filters satisfying specific frequency characteristics with auxiliary constraints. Such filters make it possible to estimate, in real-time, the parameters of fundamental current and voltage waveforms encountered in electrical power systems. The problem of design is converted to an optimisation problem with constraints using the standard least-squares criterion. The minimisation problem using the Lagrange multiplier method is mapped to a simpler problem of solving a set of linear equations. Using this method, the authors optimise the selection of algorithms for particular applications

Published in:

Generation, Transmission and Distribution, IEE Proceedings C  (Volume:140 ,  Issue: 6 )

Date of Publication:

Nov 1993

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