A new current sensor based on the measurement of the apparent coercive field strength

Author

Son, Derac ; Sievert, Johannes D.

Author_Institution

Physikalisch-Tech. Bundenstalt, Braunschweig, West Germany

Volume

38

Issue

6

fYear

1989

fDate

12/1/1989 12:00:00 AM

Firstpage

1080

Lastpage

1082

Abstract

A current sensor that uses the change of the apparent coercive field strength caused by the current to be measured is introduced. The apparent coercive field strength is derived from the magnetizing current by detecting the zero crossing points of the average magnetic flux of a core pair. The current is periodically measured at a frequency which is the same as that of the magnetizing current of the sensor. The current sensor shows a standard deviation of the nonlinearity of less than 0.002%, and can measure transient current signals with an 80-kHz sampling rate

Keywords

coercive force; electric current measurement; electric sensing devices; magnetic field measurement; 80 kHz; 80-kHz sampling rate; apparent coercive field strength; average magnetic flux; current sensor; magnetizing current; nonlinearity; transient current signals; zero crossing points; Current measurement; Frequency measurement; Instrument transformers; Magnetic cores; Magnetic field measurement; Magnetic flux; Magnetic hysteresis; Magnetic sensors; Power system harmonics; Power system transients;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

Conference_Location

12/1/1989 12:00:00 AM

ISSN

0018-9456

Type

jour

DOI

10.1109/19.46404

Filename

46404