Title :
Evaluation and compensation of the Analog-to-Digital Converters and transducer influence in the CEM digital sampling wattmeter
Author :
Diaz de Aguilar, Javier ; Salinas, J.R. ; Romero, Maria L. ; Garcia Lagos, Francisco ; Sanmamed, Yolanda A. ; Neira, Miguel
Author_Institution :
Centro Espanol de Metrol., Tres Cantos, Spain
Abstract :
A method to compensate the influence in amplitude and phase of the Analog-to-Digital Converters (ADC) and transducers used in the CEM sampling wattmeter, has been evaluated. The influence of the ADC has been tested and an algorithm to compensate for amplitude and phase has been implemented. Similar algorithm has been also developed to compensate for the influence of the shunts and resistive dividers. This method will improve the precision of the CEM digital sampling wattmeter, especially in the presence of high frequency harmonics. This paper describes the CEM digital sampling wattmeter, the evaluation of the influence of the ADC and transducer and the implemented algorithms.
Keywords :
analogue-digital conversion; compensation; harmonic analysis; power measurement; transducers; voltage dividers; wattmeters; ADC; CEM digital sampling wattmeter; amplitude compensation; analog-to-digital converter; high frequency harmonics; phase compensation; resistive divider; shunt divider; transducer; Bandwidth; Current measurement; Frequency measurement; Power measurement; Transducers; Voltage measurement; Wattmeters; Power measurements; Sampling wattmeter; ac shunts; analogical to digital converters; resistive dividers;
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.2014.6898589
