Abstract
The paper proposes a new electrothermal model of a coupled inductor containing a nanocrystalline core dedicated to the analysis of electrical energy conversion systems. The formulated model has a form of a subcircuit for SPICE. The model takes into account the influence of direct current, frequency, skin effect, temperature, self-heating, and mutual thermal couplings on the parameters and characteristics of the coupled inductors. The form of the developed model and the method of model parameter estimation are presented. The applied measuring system is presented. The results of measurements and calculations made with the use of the proposed model are presented and commented on.
Highlights
The analysis shows that there are no electrothermal models of coupled inductors dedicated to operating in electrical conversion systems
This paper presents a new electrothermal model of the coupled inductors dedicated to the analysis of electrical energy conversion systems
In order to verify the correctness of the developed electrothermal model of coupled inductors described in Section 2, the influence of temperature, frequency, and direct current
Summary
In [24], an electrothermal model of the inductor is proposed that takes into account the self-heating phenomenon, but only in the core This model ignores thermal phenomena occurring in the windings, the skin effect, and the mutual thermal couplings between the windings. The mentioned model takes into account the capacity of the winding, the skin effect, and the frequency of the control signal when the inductor is operating in the electrical energy conversion system. This model does not take into account the case of several windings wound on one core, the magnetic coupling between individual windings, or the thermal coupling between them.
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