Investigation of Selected Reconstruction Algorithms Used for Determination of Complex Ratio of AC Voltages

Issues related to measurements of the complex ratio of two sinusoidal voltages based on digital sampling are considered in this article. Several algorithms for determination of the complex voltage ratio are discussed. Results of five algorithms are compared and minimizing their errors related to differences between the two sampling channels is examined. For verification, a sampling system with National Instruments PXI 4461 data acquisition module (DAQm) was used.