Экспериментальное определение параметров магнитного сердечника и катушки индуктивности на его основе

Abstract

Introduction. The article is devoted to the description of an experimental method used to determine the magnetization curve of a core for calculating an inductor. It is convenient to be used in the absence of parameters of the core magnetic material or to refine the parameters of the finished coil. Materials and methods. It is proposed to generate a current pulse in a winding wound on the core to measure the magnetization curve – the dependence of the magnetic flux on the magnetomotive force Φ( F ). It is suggested to implement this with a thyristor-capacitor circuit. In this case, the magnetomotive force measurement is carried out with respect to the current in the winding; while the magnetic flux in the core is one of the ways: either by means of an additional flux measuring winding, or indirectly from the voltage on the main winding. Results. A MATLAB program code is suggested to process the results and plot the magnetization curves for the second method for the core of GM24DS ShL 40´80 (100´40) TU 1261-032-12287107-2010 of Gammamet firm with different gaps. Based on the resulting data, the coil parameters are calculated: inductance, magnetic conductivity, maximum magnetic flux and saturation the magnetomotive force. Based onthe resulting characteristics, the calculation of the coil for a given inductance and maximum current is suggested. Discussion. This technique is universal and can be used to determine the parameters of magnetic cores of different types, this calculation can be used to refine the parameters of the inductance coils on these cores. Conclusions. The result of the research is a family of magnetization characteristics Φ( F ) for the core GM24DS ShL 40´80 (100´40) TU 1261-032-12287107-2010 of Gammamet firm obtained and its maximum magnetic saturation flux Φ m determined. The data obtained is used to calculate the inductor based on the initial data.