Abstract

The report considers a method for measuring the frequency of the mains based on a software PLL. The article presents a description of the method, indicates the main advantages and disadvantages, and considers the features of practical implementation. By means of simulation modeling in the Matlab software package, an analysis of the methodological error of the considered method was carried out for: sinusoidal and polyharmonic signals; sinusoidal signal plus offset; sinusoidal signal plus noise; sinusoidal signal with amplitude modulation (sinusoidal or rectangular flicker).

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