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Modelling of a Hall Effect-Based Current Sensor with an Open Core Magnetic Concentrator
Ivan Yatchev1, Mehmet Sen2,3, Iosko Balabozov4
1Faculty of Electrical Engineering, Tehcnical University of Sofia, 1000 Sofia, Bulgaria. yatchev@tu-sofia.bg.
Abstract:
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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