Error source determination of a magnetoresistive active power sensor at industrial frequencies

Author

Vountesmeri, Valeri ; Cuevas, Jorge Rodrguez ; Carranza, Rene

Author_Institution

Centro de Instrumentos, Univ. Nacional Autonoma de Mexico, Mexico City, Mexico

Volume

51

Issue

5

fYear

2002

fDate

10/1/2002 12:00:00 AM

Firstpage

1035

Lastpage

1038

Abstract

In this paper, the results of the experimental investigation of the error sources of a magnetoresistive active power sensor at the industrial frequency of 60 Hz are presented. The investigation has been carried out at 120 V and 1.0, 5.0, and 10 A with the aid of a power calibrator. The current and phase shift in this experiment was held to within 30 ppm and the voltage was held to within 9 ppm, respectively. The main sources of the uncertainties are phase uncertainty of the voltage divider, self-detection of the voltage and current signals, thermoelectricity, nonlinearity of the volt-watt characteristic, and the temperature instability. The total uncertainty of the magnetoresistive active power sensor does not exceed 0.2%.

Keywords

calibration; electric sensing devices; magnetoresistive devices; measurement errors; measurement uncertainty; power measurement; 1 to 10 A; 120 V; 60 Hz; current signals; error source determination; industrial frequencies; magnetoresistive active power sensor; measurement errors; phase error; phase uncertainty; power calibrator; power measurement; self-detection; temperature instability; thermoelectricity; volt-watt characteristic nonlinearity; voltage divider; voltage signals; Circuits; Current; Frequency; Magnetic field measurement; Magnetic materials; Magnetic sensors; Magnetoresistance; Sensor phenomena and characterization; Thermoelectricity; Voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2002.807801

Filename

1174037