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Sensitive current sensor based on Fe73.5Cu1Nb3Si13.5B9/Pb(Zr,Ti)O3 composite with a tunable magnetic flux
Zhengyu Ou1, Hai Zhou1, Aichao Yang2
1School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China.
The Review of Scientific Instruments
|October 3, 2019
Summary
This study introduces a novel magnetoelectric composite current sensor. It offers tunable DC bias magnetic fields and adjustable resonant frequency for enhanced sensitivity and accurate current monitoring.
Area of Science:
- Materials Science
- Electrical Engineering
- Sensor Technology
Background:
- Magnetoelectric composites offer unique properties for sensor applications.
- Optimizing DC bias magnetic fields is crucial for maximizing sensor performance.
- Tunable resonant frequency enhances sensitivity across various current frequencies.
Purpose of the Study:
- To develop a sensitive current sensor utilizing a magnetoelectric composite.
- To incorporate a tunable magnetic concentrator for optimized performance.
- To demonstrate the sensor's suitability for precise current monitoring.
Main Methods:
- Fabrication of a magnetoelectric composite sensor using Fe73.5Cu1Nb3Si13.5B9/Pb(Zr,Ti)O3.
- Integration of a tunable magnetic concentrator with a movable magnetic plate.
- Experimental evaluation of sensor sensitivity and linearity at 50 Hz.
Main Results:
- Achieved a high sensitivity of approximately 246.71 mV/A.
- Demonstrated excellent linearity of approximately 0.98% at 50 Hz.
- Confirmed the tunability of the DC bias magnetic field and resonant frequency.
Conclusions:
- The proposed current sensor exhibits superior sensitivity and linearity.
- The tunable magnetic concentrator effectively optimizes sensor performance.
- This advanced current sensor is well-suited for reliable current-monitoring applications.
