Frequency synchronization error correction by using DFT in sinusoidal voltage measurements

• Autorzy: Krajewski M.
• Języki publikacji: EN

Abstrakty

EN

The paper presents a method of correcting a frequency synchronization error in the sinusoidal voltage measurement. Correction is performed by changing a frequency of the measured signal on the basis of the respectively determined synchronization error by using DFT. Carried out simulation experiments indicate that the correction can theoretically improve the accuracy of measurement of the RMS voltage to the level below 1 ppm. The results of measurements taken by a highly accurate voltmeter Agilent 3458 confirm the conclusions of the simulation, that it is possible to repeatedly reduce the frequency synchronization error by applying the developed correction method in the voltage measurement.

Słowa kluczowe

EN

correction of synchronization error; accurate RMS voltage measurement; DFT algorithm

• Wydawca: Wydawnictwo PAK
• Czasopismo: Measurement Automation Monitoring
• Rocznik: 2016
• Tom: Vol. 62, No. 7
• Strony: 218--220
• Opis fizyczny: Bibliogr. 5 poz., rys., tab., wykr., wzory

Twórcy

autor

Krajewski M.

• Institute of Metrology, Electronics and Computer Science, University of Zielona Góra, 2 Prof. Z. Szafran St., 65-246 Zielona Góra, Poland

Bibliografia

• [1] Kampik M., Laiz H., Klonz M.: Comparison of Three Accurate Methods to Measure AC Voltage at Low Frequencies. IEEE Trans. Instr. Meas., 49(2), 2000.
• [2] Kyriazis G. A.: An Algorithm for Accurately Estimating the Harmonic Magnitudes of Periodic Arbitrary Signals Using Asynchronous Sampling. Symposio de Metrologia 2004.
• [3] Krajewski M.: The properties comparison of DFT and classical algorithm in voltage measurement using a sampling voltmeter. Przegląd Elektrotechniczny (Electrical Review), no. 11, 2014.
• [4] Rybski R., Kaczmarek J., Kozioł M.: Amplifier-aided isolation voltage transformer for use in accurate measurements in the audio frequency range. PAK, no. 4, 2013.
• [5] Krajewski M.: Construction of uncertainty budget using the Monte Carlo method for analysis of digital signal algorithm properties. PAK, no. 9, 2012.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).