Characterization of AC current sensor based on giant magnetoresistance and coil for power meter design

Electric current is the basic variable of measurement in instrumentation system. One of the current measurements had been developed was based on magnetic sensor. Giant Magnetoresistance (GMR) produces an output voltage when it detects the magnetic field from electric current flow. The purpose of thi...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Conference series 2018-05, Vol.1013 (1), p.12177
Main Authors: Dhani, H S, Aminudin, A, Waslaluddin
Format: Article
Language:English
Subjects:
Alternating current
Coils
Electric currents
Electric potential
Giant magnetoresistance
Linearity
Magnetic fields
Magnetoresistivity
Physics
Room temperature
Saturation
Sensitivity
Sensors
Voltage
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Electric current is the basic variable of measurement in instrumentation system. One of the current measurements had been developed was based on magnetic sensor. Giant Magnetoresistance (GMR) produces an output voltage when it detects the magnetic field from electric current flow. The purpose of this study was to characterize the response of GMR when variation number of coil was given. The characterization was the GMR voltage response to the AC current values from 0.01 A to 5.00 A. The linearity of the relation was reaching saturation point when the magnetic field measured higher than 10.5 Oe at room temperature. As the number of coil increased, the earlier saturation occurred. To see the sensitivity of the sensor response, the data graph was cut off at 1.56 A AC. From this research, we got single coil was ideal to measure electric current higher than 1.56 A AC, as the relation of GMR voltage to the current tended to maintain its linearity. For measurement of 1.56 A AC and less, coil number addition would increase the sensitivity of sensor response. This research hopefully will be benefit for further development using an electric current measurement based on GMR magnetic sensor for power meter design.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1013/1/012177