Modelling of current sensor based on hall effect

Sen, Mehmet; Balabozov, Iosko; Yatchev, Ivan; Ivanov, Ratcho

doi:10.1109/elma.2017.7955485

Cited by 11 publications

(8 citation statements)

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“…Hall sensors maintains the largest market share because of their low cost, high stability, broad measurement range and great compatibility with COMS technology [1]- [4]. The fundamentals and modelling methods of Hall plate has been already discussed in plenty of research works, and Hall plates of different biasing, different materials, and different structure have been presented [5]- [10]. Horizontal Hall plate measures magnetic components perpendicular to Hall plate plane and is widely popular due to the simple structure.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Three-Axis Hall Effect Sensors Based on Integrated Magnetic Concentrator

Fan

Nabaei

et al. 2020

IEEE Sensors J.

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In this paper, we develop computational model to analyze the magnetic concentrating effect of integrated magnetic concentrator (IMC) on surrounding external magnetic field. We present an IMC-based three-axis Hall sensor model that enables to measure both inclination angles and absolute strength of a random external magnetic field. An IMC changes surrounding parallel magnetic components into perpendicular components, and therefore allows the horizontal Hall plates to measure both the strength and inclination angles of parallel external magnetic fields. We develop a finite element method (FEM) based model in COMSOL Multiphysics for the three-axis Hall sensor. Key factors influencing IMC's magnetic concentrating effect, including material property and sensor structure, are investigated and discussed using the developed model. Comparing to traditional IMC-based three-axis angular sensors, a reference permanent magnet is no longer needed in the sensor. A measurement accuracy of 0.8 and 1.2 degrees are achieved respectively for the angles of α and θ of external magnetic field.

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Section: Introductionmentioning

confidence: 99%

Modeling of Three-Axis Hall Effect Sensors Based on Integrated Magnetic Concentrator

Fan

Nabaei

et al. 2020

IEEE Sensors J.

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“…Furthermore, the accuracy of measurement methods based on giant magneto-resistance and magneto-optical effects is not high as it depends on the stability of optical and magnetic materials [ 17 , 18 , 19 , 20 ]. Owing to the rapid development of semiconductor materials and power electronic technology, magnetic field sensors, especially hall sensors, have attracted much attention for DC current measurement [ 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. As there is no iron core, the hall sensor is not susceptible to magnetic saturation and can be used to measure large DC currents.…”

Section: Introductionmentioning

confidence: 99%

Study of Current Measurement Method Based on Circular Magnetic Field Sensing Array

Zhang

et al. 2018

Sensors

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Classic core-based instrument transformers are more prone to magnetic saturation. This affects the measurement accuracy of such transformers and limits their applications in measuring large direct current (DC). Moreover, protection and control systems may exhibit malfunctions due to such measurement errors. This paper presents a more accurate method for current measurement based on a circular magnetic field sensing array. The proposed measurement approach utilizes multiple hall sensors that are evenly distributed on a circle. The average value of all hall sensors is regarded as the final measurement. The calculation model is established in the case of magnetic field interference of the parallel wire, and the simulation results show that the error decreases significantly when the number of hall sensors n is greater than 8. The measurement error is less than 0.06% when the wire spacing is greater than 2.5 times the radius of the sensor array. A simulation study on the off-center primary conductor is conducted, and a kind of hall sensor compensation method is adopted to improve the accuracy. The simulation and test results indicate that the measurement error of the system is less than 0.1%.

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“…For estimation of the influence of the value of the current on the output voltage signal from the Hall plate, the output signal has been computed for different values of the current, varying the latter from 10 to 40 A. The computations have been carried out using the approach in [ 19 ] for the construction with two air gaps and value of the second gap of 5 mm.…”

Section: Results For the Influence Of Different Parametersmentioning

confidence: 99%

“…The AC/DC module and Magnetic Fields and Electric Currents interfaces have been used. For computation of the Hall plate output voltage, the approach employed in [ 19 ] has been used.…”

Section: Fem Modellingmentioning

confidence: 99%

Modelling of a Hall Effect-Based Current Sensor with an Open Core Magnetic Concentrator

Yatchev

Sen

Balabozov

et al. 2018

Sensors

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The present paper deals with the modelling of a Hall effect current sensor with open core magnetic concentrator. 3D magnetic field modelling is carried out using the finite element method (FEM) and Comsol Multiphysics software. Two rectangular core constructions are considered. Different geometric parameters of the magnetic concentrator are varied and their influence on the sensor characteristic is studied, with the aim of reducing the dependence on the output signal on the distance to the conductor. Of the studied parameters, core window length leads to the most significant change in the sensor characteristic. Future work can include the optimization of the sensor construction.

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Modelling of current sensor based on hall effect

Cited by 11 publications

References 0 publications

Modeling of Three-Axis Hall Effect Sensors Based on Integrated Magnetic Concentrator

Modeling of Three-Axis Hall Effect Sensors Based on Integrated Magnetic Concentrator

Study of Current Measurement Method Based on Circular Magnetic Field Sensing Array

Modelling of a Hall Effect-Based Current Sensor with an Open Core Magnetic Concentrator

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