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Academic literature on the topic 'Fluxgate current sensors'

Author: Grafiati
Published: 18 May 2024

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Journal articles on the topic "Fluxgate current sensors"

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Ripka, Pavel, Václav Grim, and Andrey Chirtsov. "Improved 3-Phase Current Transducer." Proceedings 2, no. 13 (November 26, 2018): 1070. http://dx.doi.org/10.3390/proceedings2131070.

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We propose improved contactless DC/AC current transducer for 3-phase current lines based on 8 integrated fluxgate sensors. Using proper processing we ideally achieve a complete suppression of external homogeneous fields, and field gradients up to the 4th order. The sensitivity to external currents (crosstalk) is improved 15-times compared to [1]. The usage of micro fluxgate sensors instead of magnetoresistive sensors improves the temperature stability: the sensitivity temperature coefficient was reduced from 0.3%/K to 50 ppm/K and offset drift was reduced from 50 mA/K to 1 mA/K.
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Zhao, Yue, Jing Lin Hu, Wen Zhong Lou, and Long Fei Zhang. "The Study of a Fluxgate SPICE Model Based on Schmitt Trigger." Key Engineering Materials 483 (June 2011): 212–18. http://dx.doi.org/10.4028/www.scientific.net/kem.483.212.

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Current fluxgate sensor probe SPICE models constructed by using arc tangent transfer function method and the diode model in fluxgate sensor simulation had some disadvantages which were non convergence, low simulation accuracy, discontinuously adjusted core characteristics and the model couldn’t simulate the hysteresis characteristic. IO characteristics of Schmitt Trigger was similar to the B-H curve of soft magnetic core in shape, for this reason Schmitt trigger was used to construct fluxgate probe SPICE model. HSPICE was used in simulation. Simulation results shown that this model can simulate the real electrical properties of fluxgate probe accurately. This model can be used for fluxgate sensor interface integrated circuit research and fluxgate sensor application, and provide a reference to judge the performance for fluxgate sensors of which core parameters within a certain range.
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Ripka, Pavel, Pavel Mlejnek, Pavel Hejda, Andrey Chirtsov, and Jan Vyhnánek. "Rectangular Array Electric Current Transducer with Integrated Fluxgate Sensors." Sensors 19, no. 22 (November 14, 2019): 4964. http://dx.doi.org/10.3390/s19224964.

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Novel rectangular yokeless current transducer with the range 400 A using 16 microfluxgate sensors around the busbar conductor is presented in this paper. Compared to yokeless transducers utilizing the differential pair of magnetic sensors, our solution has much better suppression of the external currents (lower crosstalk). Compared to industrial transducers with yoke, the new transducer has 15-times lower noise, 7-times better temperature stability, and same crosstalk. Sensor design and design of current monitoring system is presented together with the results of long-term field tests. Crosstalk error is examined in dependence on the number of the operating sensors and external current position.
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Ren, Ming Yuan, Xiao Wei Liu, Hao Ran Li, and Zhi Gang Mao. "Analytical Model of Fluxgate System." Key Engineering Materials 503 (February 2012): 236–39. http://dx.doi.org/10.4028/www.scientific.net/kem.503.236.

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This paper presents a complete set of SIMULINK models, which allow exhaustive behavioral simulations of fluxgate system to be performed. The model construction is detailed and it is applied to the Vacquier-type fluxgate sensor. Well known characteristics of these sensors are confirmed through the simulations. In spite of this simplicity, the model has been successfully used to describe the variation of the output of a Vacquier-type fluxgate sensor with the amplitude and the frequency of the driving current. Using a previously developed 2nd harmonic fluxgate magnetometer, some preliminary experimental results are obtained confirming the appearance at its output.
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Msaed, Aline, Mansour Tawk, Youssef Zaatar, and Doumit Zaouk. "Design of an Accuracy Current Sensor Using Amorphous Fine Wire of FeCoSiB." Advanced Materials Research 324 (August 2011): 423–26. http://dx.doi.org/10.4028/www.scientific.net/amr.324.423.

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In this paper, we are interested in electric current reconstruction from magnetic field measurements. The major difficulty of this principle is in the ability to reject magnetic field perturbations which affect the accuracy of the measurements. The first experimental validation of the approach of gradient measurement shows large errors in the current reconstruction using two independent fluxgate sensors. These errors were attributed to mechanical alignment and different residual magnetic states of the fluxgate sensors. We then suggested an effective solution able to overcome these problems. This solution consists of a fluxgate gradiometer placed above U-shaped conductor carrying the unknown current to be reconstructed. The experimental results of this system show a good rejection of uniform and non-uniform magnetic field perturbations and furthermore an improvement of the accuracy of the measurements.
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Coillot, C., J. Moutoussamy, M. Boda, and P. Leroy. "New ferromagnetic core shapes for induction sensors." Journal of Sensors and Sensor Systems 3, no. 1 (January 15, 2014): 1–8. http://dx.doi.org/10.5194/jsss-3-1-2014.

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Abstract. Induction sensors are used in a wide range of scientific and industrial applications. One way to improve these is rigorous modelling of the sensor combined with a low voltage and current input noise preamplifier aiming to optimize the whole induction magnetometer. In this paper, we explore another way, which consists in the use of original ferromagnetic core shapes of induction sensors, which bring substantial improvements. These new configurations are the cubic, orthogonal and coiled-core induction sensors. For each of them we give modelling elements and discuss their benefits and drawbacks with respect to a given noise-equivalent magnetic induction goal. Our discussion is supported by experimental results for the cubic and orthogonal configurations, while the coiled-core configuration remains open to experimental validation. The transposition of these induction sensor configurations to other magnetic sensors (fluxgate and giant magneto-impedance) is an exciting prospect of this work.
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Kolomeitsev, A. A., I. A. Zatonov, M. I. Pischanskaya, P. F. Baranov, D. P. Ilyaschenko, and E. V. Verkhoturova. "Designing a Planar Fluxgate Using the PCB Technology." Devices and Methods of Measurements 12, no. 2 (June 25, 2021): 117–23. http://dx.doi.org/10.21122/2220-9506-2021-12-2-117-123.

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The development of novel methods, scientific devices and means for measuring magnetic fields generated by ultra-low current is among promising directions in the development of medical equipment and instruments for geodetic surveys and space exploration. The present work is to develop a small sensor capable of detecting weak magnetic fields, which sources are biocurrents, radiation of far space objects and slight fluctuations of the geomagnetic field. Scientists estimate the strength of such magnetic fields as deciles of nanotesla. The key requirements for the sensors of ultra-low magnetic field are: resolution, noise level in the measurement channel, temperature stability, linearity and repeatability of the characteristics from one produced item to another. The aforementioned characteristics can be achieved by using planar technologies and microelectromechanical systems (MEMS) in such advanced sensors.The work describes a complete R&D cycle, from creating the computer model of the sensor under study to manufacturing of a working prototype. To assess the effect of the geometry and material properties, the Jiles–Atherton model is implemented which, unlike the majority of the models used, allows considering the non-linearity of the core, its hysteresis properties and influence of residual magnetization.The dimensions of the developed sensor are 40×20×5 mm, while the technology allows its further diminishment. The sensor has demonstrated the linearity of its properties in the range of magnetic field strength from 0.1 nT to 50 µT for a rms current of excitation of 1.25 mA at a frequency of 30 kHz. The average sensitivity for the second harmonic is 54 µV/nT.
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Zhi, Feng, and Lei. "Improved Performance of Fundamental Mode Orthogonal Fluxgate Using a Micro-Patterned Meander-Shaped Ribbon Core." Sensors 19, no. 23 (November 20, 2019): 5058. http://dx.doi.org/10.3390/s19235058.

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In this paper, the performance of orthogonal fluxgate sensors with meander-shaped cores is studied in fundamental mode. The meander-shaped cores are made by micro-patterning technology based on a Co-based amorphous ribbon. The main advantage of this structure is that the linear operating range of the sensor can be adjusted simply by changing the number of strips, without affecting the excitation mechanism. Experiments show that a linear range of 560 μT is obtained by a meander-shaped core sensor with 12 strips. The changes in the number of strips can also increase sensitivity and reduce noise of the sensor. We can achieve a sensitivity of 600 V/T and a noise level of 0.64 nT/√Hz at 1 Hz for a meander-shaped core sensor with eight strips. Compared with the performance of the sensors built using a single strip core having the same equivalent cross-sectional area, the use of meander-shaped core can provide a higher sensitivity and linearity, and a lower noise level. We also compare the performance of an eight-strip meander-shaped core orthogonal fluxgate operated in the fundamental and second-harmonic modes. Similar sensitivity for the two modes can be obtained by adjusting the excitation current. In this case, we find that the noise of sensor operating in fundamental mode is about five times lower than that of the sensor operating in second-harmonic mode. This can be interpreted as the suppression of Barkhausen noise by unipolar bias in the fundamental mode.
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Cao, Daping, Si Liu, and Changzhong Jiang. "Maximum energy transfer conditions in parametric amplification of current-output fluxgate sensors." Sensors and Actuators A: Physical 173, no. 1 (January 2012): 136–40. http://dx.doi.org/10.1016/j.sna.2011.11.010.

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Huong Giang, Do Thi, Ho Anh Tam, Vu Thi Ngoc Khanh, Nguyen Trong Vinh, Phung Anh Tuan, Nguyen Van Tuan, Nguyen Thi Ngoc, and Nguyen Huu Duc. "Magnetoelectric Vortex Magnetic Field Sensors Based on the Metglas/PZT Laminates." Sensors 20, no. 10 (May 15, 2020): 2810. http://dx.doi.org/10.3390/s20102810.

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This paper describes the route, from simulations toward experiments, for optimizing the magnetoelectric (ME) geometries for vortex magnetic field sensors. The research is performed on the base of the Metglas/Piezoelectric (PZT) laminates in both open and closed magnetic circuit (OMC and CMC) geometries with different widths (W), lengths (L), and diameters (D). Among these geometries, the CMC laminates demonstrate advantages not only in their magnetic flux distribution, but also in their sensitivity and in their independence of the position of the vortex center. In addition, the ME voltage signal is found to be enhanced by increasing the magnetostrictive volume fraction. Optimal issues are incorporated to realize a CMC-based ME double sandwich current sensor in the ring shape with D × W = 6 mm × 1.5 mm and four layers of Metglas. At the resonant frequency of 174.4 kHz, this sensor exhibits the record sensitivity of 5.426 V/A as compared to variety of devices such as the CMC ME sensor family, fluxgate, magnetoresistive, and Hall-effect-based devices. It opens a potential to commercialize a new generation of ME-based current and (or) vortex magnetic sensors.
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Dissertations / Theses on the topic "Fluxgate current sensors"

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Saoudi, Rania. "Comportement des matériaux magnétiques nanocristallins FeCuNbSiB lors du vieillissement sous contraintes thermique et électrique." Electronic Thesis or Diss., Lyon 1, 2023. http://www.theses.fr/2023LYO10132.

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Dans le contexte de l'augmentation de l'efficacité énergétique, les systèmes électriques passent par une conception très compactée afin de réduire leurs volumes et poids, spécifiquement dans les systèmes intervenant dans les transports (automobile, ferroviaire et aérien). Cette compacité amène les matériaux magnétiques des nouveaux convertisseurs électriques à fonctionner dans environnements sévères (hautes températures et hautes fréquences). Cette thèse est consacrée pour étudier le comportement dans le temps (vieillissement) des matériaux nanocristallins FeCuNbSiB dédié à la conception des transformateurs, des inductances et des capteurs de courants. Différentes nuances de ces matériaux sont étudiées sachant que les échantillons sont fournis par APERAM Imphy sous forme des tores. En premier temps, les nanocristallins sont étudiées lors du vieillissement continu sous différentes températures. Plusieurs grandeurs macroscopiques magnétiques sont mesurées à chaque période de vieillissement. Afin d'expliquer le mécanisme du vieillissement, une analyse des énergies d'anisotropies est menée, compléter par des mesures à différentes échelles (locale, mésoscopique et microscopique). En deuxième temps, les propriétés magnétiques des nanocristallins sont suivis durant leur vieillissement thermique sous excitation alternée. Cette dernière est appliquée en utilisant des circuits électroniques conçus pour des capteurs de courant fluxgate fournis par LEM. Au final, l'impact du vieillissement magnétique des nanocristallins sur l'évolution des paramètres des capteurs est étudié
In the context of increasing energy efficiency, electrical systems need to be designed in a very compact way in order to reduce their volume and weight, specifically in systems used in transportation (automotive, rail and airplanes). This compactness leads the magnetic materials of the new electrical converters to operate in severe environments (high temperatures and high frequencies). This thesis focuses on the behavior over time (aging) of FeCuNbSiB nanocrystalline materials dedicated to the design of transformers, inductors and current sensors. Different grades of nanocrystalline materials were provided by our collaborator APERAM Imphy in the form of wound cores. At first, nanocrystalline materials are studied during continuous aging under different temperatures. In aim to monitor aging evolution, several macroscopic magnetic properties are measured at each aging period. In order to explain the aging mechanism, an analysis of the anisotropy energies is conducted, completed by measurements at different scales (local, mesoscopic and microscopic). Thereafter, the magnetic properties of nanocrystalline materials are monitored during their thermal aging under alternating excitation. The latter is applied using electronic circuits designed for fluxgate current sensors provided by LEM. Finally, the impact of magnetic aging of nanocrystals on the evolution of sensor parameters is studied
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Book chapters on the topic "Fluxgate current sensors"

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Zhang, Xin, Aiming Zhao, Yawei Shi, Ronghui Hu, and Shuaishuai Zhao. "A Small-Scale Current Sensor Scheme of Single-Loop Double-Winding Fluxgate." In Emerging Trends in Intelligent and Interactive Systems and Applications, 520–28. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-63784-2_65.

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Conference papers on the topic "Fluxgate current sensors"

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Butta, Mattia, Michal Janosek, and Pavel Ripka. "Coil-less fluxgate operated in feedback mode by means of dc current." In 2010 Ninth IEEE Sensors Conference (SENSORS 2010). IEEE, 2010. http://dx.doi.org/10.1109/icsens.2010.5690109.

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Ferri, M., A. Surano, A. Rossini, P. Malcovati, E. Dallago, and A. Baschirottoy. "Low-voltage fluxgate magnetic current sensor interface circuit with digital output for portable applications." In 2009 IEEE Sensors. IEEE, 2009. http://dx.doi.org/10.1109/icsens.2009.5398520.

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Kudo, Takahiro, Susumu Kuribara, and Yasuhiro Takahashi. "Wide-range ac / dc earth leakage current sensor using fluxgate with self-excitation system." In 2011 IEEE Sensors. IEEE, 2011. http://dx.doi.org/10.1109/icsens.2011.6127133.

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Scherzer, Maximilian, Mario Auer, Aris Valavanoglou, and Werner Magnes. "Implementation of a Fully Differential Low Noise Current Source for Fluxgate Sensors." In 2022 IEEE 13th Latin America Symposium on Circuits and System (LASCAS). IEEE, 2022. http://dx.doi.org/10.1109/lascas53948.2022.9789061.

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Liu, Yang, Yuan Lin, Qinhong Lan, Dong F. Wang, Ziqi Zhao, Xuesong Shang, Yipeng Hou, Huan Liu, and Xu Yang. "Excitation Circuit Design and Theoretical Model for Self-Oscillating Fluxgate Current Sensors Considering Mutual Inductance Effect." In 2018 IEEE 13th Annual International Conference on Nano/Micro Engineered and Molecular Systems (NEMS). IEEE, 2018. http://dx.doi.org/10.1109/nems.2018.8556869.

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Tian, Xinliang, Qiyu Qian, and Wei Fu. "Fluxgate Current Sensor Based on H-Bridge." In 2023 6th International Conference on Electronics Technology (ICET). IEEE, 2023. http://dx.doi.org/10.1109/icet58434.2023.10212097.

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Zhao, Chuanfeng, Shanglin Yang, Lijin Jiang, and Juin Jei Liou. "Error Analysis of Current Sensor Based on Fluxgate Sensor Array." In 2023 IEEE 18th Conference on Industrial Electronics and Applications (ICIEA). IEEE, 2023. http://dx.doi.org/10.1109/iciea58696.2023.10241505.

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Teppan, W. "Shielded Fluxgates for Open-Loop Current Transducers; Measuring High Flux Densities Fast." In 2006 5th IEEE Conference on Sensors. IEEE, 2006. http://dx.doi.org/10.1109/icsens.2007.355779.

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Shtabel, Nikolay, Liudmila Samotik, and Enis Mizrakh. "Fluxgate Direct Current Sensor For Real-Time Insulation Resistance Monitoring." In 2019 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM). IEEE, 2019. http://dx.doi.org/10.1109/icieam.2019.8743050.

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Çoker, Eylem Gülce, Hava Can, Selman Selvi, Peter Svec, and Uğur Topal. "Design of a DC current sensor based on fluxgate principle." In APPLIED PHYSICS OF CONDENSED MATTER (APCOM 2019). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5119460.

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