Title :
High frequency oscillation parametric current sensor with feedback loop
Author :
Kutsukake, Hiroshi ; Tanno, Yorimoto
Author_Institution :
Fac. of Eng., Shinshu Univ., Nagano, Japan
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;
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
DOI :
10.1109/IECON.1993.339298
