Determining the frequency of an alternating signal

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United States of America Patent

PATENT NO 10613127
APP PUB NO 20180059154A1
SERIAL NO

15670602

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Abstract

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A method determines the frequency of an alternating input signal includes storing the input signal, sampling the input signal at a first sampling frequency, a first calculation and a first angular comparison of two phasors representing the input signal at two respective instants, as a function of the input signal sampled at the first sampling frequency, estimating the frequency of the input signal, and searching for a modification of frequency of the input signal. When a modification is detected the method includes, determining a second sampling frequency, sampling the stored input signal with the second sampling frequency, a second calculation and a second angular comparison of two phasors representing the input signal, at two respective instants, as a function of the input signal sampled at the second sampling frequency and of the stored input signal sampled at the second sampling frequency, and estimating the frequency of the input signal.

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Patent Owner(s)

Patent OwnerAddress
SCHNEIDER ELECTRIC INDUSTRIES SAS35 RUE JOSEPH MONIER RUEIL-MALMAISON 92500

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Caire, Raphael Grenoble, FR 3 1
Ghafari, Christophe Echirolles, FR 1 1
Mecreant, Julien Seyssinet Pariset, FR 3 5
Raison, Bertrand St Martin d'Heres, FR 6 16

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