Analysis of a Simple Algorithm for Phase Shift Measurement Between Sinusoidal Voltage Signals

АУТОР(И) / AUTHOR(S):  Lazar D. Miladinović , Branko M. Koprivica

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DOI: 10.46793/TIE24.587M

САЖЕТАК /ABSTRACT:

This paper presents the analysis of the problem of phase shift measurement error that arises in Simple Algorithm (SAL) when signals are not sampled synchronously. Data acquisition systems allow simultaneous multiple channel measurements by utilising one AD converter with multiplexer. Multiplexer introduces time latency between sampling of different channels, which makes sampling of signals non-simultaneous. By experimental measurements with NI 6009 data acquisition card and LabVIEW, as well as C++ simulations, two components of the measurement error will be identified: time dependant component which causes phase shift estimations to oscillate and constant component which introduces the offset in performed estimations.

КЉУЧНЕ РЕЧИ / KEYWORDS: 

phase shift measurement; LabVIEW; Data acquisition system; measurement error

ПРОЈЕКАТ/ ACKNOWLEDGEMENTS:

This study was supported by the Ministry of Science, Technological Development and Innovation of the Republic of Serbia, and these results are parts of the Grant No. 451-03-66/2024-03/200132 with University of Kragujevac, Faculty of Technical Sciences Čačak.

ЛИТЕРАТУРА / REFERENCES

1. Vučijak, N. & Saranovac L. (2010). A simple algorithm for estimation of phase difference between two sinusoidal voltages. IEEE Transactions on Instrumentation and Measurement, 59(12), 3152-3158.
2. Vučijak, N. (2015). Algorithm for determining the phase difference of low frequency sinusoidal signals. University of Belgrade Faculty of Electrical Engineering, Belgrade Serbia, PhD Thesis, (in Serbian).
3. Wang, Z., Mao, L. & Liu, R. (2012). High-accuracy amplitude and phase measurements for low-level rf systems. IEEE Transactions on Instrumentation and Measurement, 61(4), 912-921.
4. Sarıbulut, L. (2014). A simple power factor calculation for electrical power systems. International Journal of Electrical Power & Energy Systems, 62, 66-71.
5. Augustyn, J. & Kampik M. (2019). Improved sine-fitting algorithms for measurements of complex ratio of ac voltages by asynchronous sequential sampling. IEEE Transactions on Instrumentation and Measurement, 68(6), 1659-1665.
6. Shen, Y.-l., Tu, Y.-q., Chen, L.-j. & Shen, T.-a. (2015). Phase difference estimation method based on data extension and Hilbert transform. Measurement Science and Technology, 26(9), 095003.
7. Milovanović, A., Bjekić M. & Koprivica B. (2010). Virtual instrumentation. University of Kragujevac, Technical Faculty Čačak, Čačak, Serbia, (in Serbian).