Title :
Comments on "New algorithm for measuring 50/60-Hz AC values based on the usage of slow A/D converters" and "Measuring of slowly changing AC signals without sample-and-hold circuit"
Author :
Pejovic, Predrag ; Saranovac, Lazar ; Popovic, Miodrag
Author_Institution :
Fac. of Electr. Eng., Belgrade, Yugoslavia
Abstract :
In this correspondence, the results of the original paper are commented on [ see ibid., vol. 49, p. 166-71, 2000 and vol. 49, p. 1245-48, 2000]. It is shown that conditions when the averaging formula is claimed to be valid are not correct, and that synchronization on the signal period level is required. Correction of these conditions is given.
Keywords :
analogue-digital conversion; power system measurement; signal reconstruction; synchronisation; AC values; averaging formula; signal period level; slow A/D converters; slowly changing AC signals; synchronization; Circuits; Current measurement; Electric variables measurement; Instruments; Power system measurements; Sampling methods; Signal analysis; Signal reconstruction; Signal sampling; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2003.817917
