System and method for exact compensation of fundamental phasors

Details System and method for exact compensation of fundamental phasors System and method for exact compensation of fundamental phasors

2005-08-23

2005-08-23

Hoff, Marc S. (Department: 2857)

Data processing: measuring, calibrating, or testing

Calibration or correction system

Signal frequency or phase correction

C375S226000

Reexamination Certificate

active

06934654

ABSTRACT:
A measured phasor representing a sinusoidal power signal waveform is produced by orthogonal FIR filters, one of which produces the real part of the phasor and the other of which produces the imaginary part. The frequency difference between the rated frequency of the signal waveform in the power system and the actual frequency of the waveform at any selected point in time is determined and the elements (A, B, C, D) of a compensation matrix is determined. The compensation matrix is then used to perform a linear transformation to produce an exact phasor for the waveform.

REFERENCES:
patent: 5805395 (1998-09-01), Hu et al.
patent: 5809045 (1998-09-01), Adamiak et al.
patent: 6141196 (2000-10-01), Premerlani et al.
patent: 6148267 (2000-11-01), Premerlani

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