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. 2017 Jun 2;17(6):1271.
doi: 10.3390/s17061271.

Magnetoelectric Current Sensors

Mirza Bichurin  1 , Roman Petrov  2 , Viktor Leontiev  3 , Gennadiy Semenov  4 , Oleg Sokolov  5
Affiliations

Magnetoelectric Current Sensors

Mirza Bichurin et al. Sensors (Basel). .

Abstract

In this work a magnetoelectric (ME) current sensor design based on a magnetoelectric effect is presented and discussed. The resonant and non-resonant type of ME current sensors are considered. Theoretical calculations of the ME current sensors by the equivalent circuit method were conducted. The application of different sensors using the new effects, for example, the ME effect, is made possible with the development of new ME composites. A large number of studies conducted in the field of new composites, allowed us to obtain a high magnetostrictive-piezoelectric laminate sensitivity. An optimal ME structure composition was matched. The characterization of a non-resonant current sensor showed that in the operation range to 5 A, the sensor had a sensitivity of 0.34 V/A, non-linearity less than 1% and for a resonant current sensor in the same operation range, the sensitivity was of 0.53 V/A, non-linearity less than 0.5%.

Keywords: current sensor; magnetoelectric effect; magnetoelectricity; sensor design.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Magnetoelectric current sensor: principle of operation.
Figure 2
Figure 2
Block diagram of ME non-resonant current sensor.
Figure 3
Figure 3
Magnetoelectric element: 1—magnetostrictive plates (Metglas); 2—adhesive layer; 3—piezoelectric plate (PZT); 4—electrodes.
Figure 4
Figure 4
Design of the hard core of a magnetoelectric sensor: 1—inductance coil; 2—ME element; 3—leading-out wire of ME element; 4—glue; 5—current coil.
Figure 5
Figure 5
Schematic diagram of the signal processing.
Figure 6
Figure 6
Design of a magnetoelectric non-resonant current sensor prototype: (a) non-resonant current sensor; (b) current sensor in the body.
Figure 7
Figure 7
Output characteristics of the ME non-resonant current sensor.
Figure 8
Figure 8
Block diagram of resonant current sensor.
Figure 9
Figure 9
Design of magnetoelectric resonant current sensor prototype: (a) view from above; (b) bottom view.
Figure 10
Figure 10
Characteristic output of the ME resonant current sensor.
Figure 11
Figure 11
The equivalent circuit of ME non-resonant DC sensor.
Figure 12
Figure 12
Output voltage depending on the frequency for the non-resonant current sensor.
Figure 13
Figure 13
The equivalent circuit of ME resonant DC sensor.
Figure 14
Figure 14
Amplitude frequency characteristics of the resonant current sensor.
See this image and copyright information in PMC

References

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