High-frequency oscillation parametric current sensor with feedback loop

Author

Kutsukake, Hiroshi ; Tanno, Yorimoto

Author_Institution

Fac. of Eng., Shinshu Univ., Nagano, Japan

Volume

42

Issue

2

fYear

1995

fDate

4/1/1995 12:00:00 AM

Firstpage

164

Lastpage

168

Abstract

This paper deals with a noncontact current sensor that operates from DC to high frequency. This sensor utilizes the phenomenon of parametric oscillation, whereby the parametric oscillation voltage is amplitude-modulated by the magnetic field of the measured current. The proposed sensor has been operated closed loop up to 3 kHz for measured current and as expected has better performance characteristics than the open loop version. In this paper, we describe the features of this novel current sensor and ways to extend the high-frequency limit. Experimental results are given to support the theoretical analysis

Keywords

electric current measurement; electric sensing devices; feedback; magnetic fields; parametric oscillators; amplitude-modulated voltage; closed loop operation; feedback loop; high-frequency oscillation parametric current sensor; magnetic field; noncontact current sensor; parametric oscillation voltage; performance characteristics; Capacitance; Capacitors; Current measurement; Feedback loop; Frequency; Magnetic field measurement; Magnetic sensors; RLC circuits; Sensor phenomena and characterization; Voltage;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.370382

Filename

370382