High frequency oscillation parametric current sensor with feedback loop

Author

Kutsukake, Hiroshi ; Tanno, Yorimoto

Author_Institution

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

fYear

1993

fDate

15-19 Nov 1993

Firstpage

1534

Abstract

This paper deals with a noncontact current sensor that operates from DC to high frequency. The 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

amplitude modulation; detectors; electric current measurement; electric sensing devices; feedback; magnetic fields; 0 Hz to 3 kHz; HF oscillation parametric current sensor; feedback loop; magnetic field; noncontact current sensor; parametric oscillation; performance characteristics; Current measurement; Feedback loop; Frequency; Linearity; Magnetic field measurement; Magnetic sensors; Nonlinear equations; RLC circuits; Sensor phenomena and characterization; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, Control, and Instrumentation, 1993. Proceedings of the IECON '93., International Conference on

Conference_Location

Maui, HI

Print_ISBN

0-7803-0891-3

Type

conf

DOI

10.1109/IECON.1993.339298

Filename

339298