New current transformer device based on non-magnetostrictive amorphous ribbons

Irigoyen, A.; Gómez‐Polo, C.; Pérez-Conde, J.

doi:10.1016/s0924-4247(01)00516-7

Cited by 8 publications

(2 citation statements)

References 3 publications

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“…Nowadays it exists a great interest in the study of sensors using numerical models because they reflect better than the analytical ones, the real behaviour of the devices. The experimental study of the influence of the air gap in a toroidal current sensor has been developed in [1], for the low current and frequency range. The modelization of toroidal sensors with air-gaps using the finite element method has been studied in [2] [3], the magnetic circuit parameters have been calculated for modelling the measuring system.…”

Section: State Of the Artmentioning

confidence: 99%

Study of sensor modellinMeasurement Errors in a Current Sensor with Air-Gaps.

Usón¹,

Letosa²,

Arcega³

et al. 2024

RE&PQJ

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A modelization of a toroidal current sensor with air gaps using the 3D finite element method is presented. The errors associated with this sensor have been evaluated and the experimental verification has been carried out. With this model we try to study the sensitivity to the crosstalk error of this kind of current sensors in function of two design parameters, the width of the air gap and the position of the sensor with respect to the cable carrying current.

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Section: State Of the Artmentioning

confidence: 99%

Study of sensor modellinMeasurement Errors in a Current Sensor with Air-Gaps.

Usón¹,

Letosa²,

Arcega³

et al. 2024

RE&PQJ

View full text Add to dashboard Cite

show abstract

“…The magnetic anisotropy is vanished by average because of the interaction of ferromagnetic exchange. It is just the interaction between amorphous and nanocrystal grain that the nanocrystalline materials show lower coercive force and higher permeability and have excellent soft magnetic properties [5][6][7][8]. In addition, since the materials are annealed by proper temperature, the temperature stability for the materials increases greatly.…”

Section: Nanocrystalline Ensing Aterialsmentioning

confidence: 99%

A Novel Current Sensor Using FeCuNbSiB Single Nanocrystalline Toroidal Core and Double-Winding Excited by Multivibrator

Bao

Zhang

Yang

2007

2007 International Conference on Mechatronics and Automation

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Fe73. 5Cu1Nb3Si13.5B9 nanocrystalline toroidal magnetic core made by furnace annealing at 823K under nitrogen atmosphere shows good thermal stability of magnetic properties and excellent soft magnetic properties due to the greatly released internal stresses of the core during the isothermal annealing relaxation process. Based on the characteristic of the sensitive magnetic core, we proposed a novel non-contact type current sensor, which adopted single nanocrystalline core and doublewinding excited by multivibrator bridge circuit. The sensor shows leading features that the sensitivity is inversely proportional to the number of turns of the winding and the sensitivity is nearly not related to the voltage supply provided for the bridge when some conditions are satisfied. The measuring principle was given in more detail by building ideal hysteresis loop model for the magnetic core. The observed experimental phenomenon is well consistent with the theoretical results and the theory indicates clearly the key factors affecting the performance parameters of the sensor, such as the coercive force,Hc, and the magnetic flux of the sensing materials, the number of turns of the coils and circuit parameters, such as the values of resistors, capacitors and the transistor parameters,V ce ,V be ,in the multivibrator bridge. In other words, we can design sensor freely to meet some requirements according to the given theory. The output signal of the multivibrator bridge was analysed by Fourier transform. Moreover, according to the theoretical results, the method to design the corresponding signal conditioning circuit was presented. The linear range of the sensor can be adjusted from 200mA to 8A with nonlinearity less than 0.5%F.S.

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Theoretical analysis of novel weak current sensor using FeCuNbSiB single nanocrystalline toroidal core and double-winding

Da-qi

Bao

Ding

et al. 2006

Front. Mech. Eng. China

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An Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9 nanocrystalline toroidal core made by isothermal furnace annealing shows good thermal stability of magnetic properties and excellent soft magnetic properties due to the full release of the internal stresses of the core during the annealing process. Based on the feature of the magnetic core, a novel non-contact type weak current sensor adopting single nanocrystalline core and double-winding excited by multivibrator bridge is proposed. The measuring principles for static current are given in theory by an established mathematical model of the sensor. The theory is in good agreement with the experimental results and it indicated clearly the key factors affecting performance parameters for the sensor. The multivibrator bridge output signal was analyzed by Fourier transform. Furthermore, according to the theoretical results, the method to design the signal conditioning circuit was introduced.

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New current transformer device based on non-magnetostrictive amorphous ribbons

Cited by 8 publications

References 3 publications

Study of sensor modellinMeasurement Errors in a Current Sensor with Air-Gaps.

Study of sensor modellinMeasurement Errors in a Current Sensor with Air-Gaps.

A Novel Current Sensor Using FeCuNbSiB Single Nanocrystalline Toroidal Core and Double-Winding Excited by Multivibrator

Theoretical analysis of novel weak current sensor using FeCuNbSiB single nanocrystalline toroidal core and double-winding

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