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

Author

Rodriguez, Jose

Volume

1

fYear

2001

fDate

21-23 May 2001

Firstpage

490

Abstract

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, 5, 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 signal, 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

magnetic sensors; magnetoresistive devices; measurement errors; measurement uncertainty; power measurement; power meters; 1 A; 10 A; 120 V; 5 A; 60 Hz; analog multiplication; current shift; error source determination; industrial frequencies; magnetoresistive active power sensor; phase shift; phase uncertainty; power calibrator; power measurement; self-detection; temperature instability; uncertainty sources; volt-watt characteristic nonlinearity; voltage divider; Circuits; Frequency; Magnetic anisotropy; Magnetic field measurement; Magnetic fields; Magnetic sensors; Magnetoresistance; Perpendicular magnetic anisotropy; Sensor phenomena and characterization; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE

Conference_Location

Budapest

ISSN

1091-5281

Print_ISBN

0-7803-6646-8

Type

conf

DOI

10.1109/IMTC.2001.928867

Filename

928867