Title :
Highly accurate differential AC voltage measurements with a single DC voltage reference
Author :
Kurten Ihlenfeld, Waldemar G. ; Landim, Regis P.
Author_Institution :
Inst. Nac. de Metrol., Qualidade e Tecnol. (INMETRO), Rio de Janeiro, Brazil
Abstract :
This paper describes a measurement setup employed to investigate differential voltage measurements to be done with a spectrally pure sine wave and a dc reference. The system enables adjustment, to a very high accuracy, the start phase of ac sampling. Repeatabilities of some 0.1 μV/V were obtained with the help of adaptive digital control.
Keywords :
adaptive control; digital control; electric current measurement; reference circuits; voltage measurement; AC sampling; DC reference; adaptive digital control; differential AC voltage measurement; sine wave reference; single DC voltage reference; Band-pass filters; Capacitors; Distortion measurement; Harmonic analysis; Power harmonic filters; Synchronization; Voltage measurement; Ac voltage; Josephson; chopped dc reference; digital signal processing; measurement standards; sampling technique;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4799-5205-2
DOI :
10.1109/CPEM.2014.6898611
