Abstract
In this paper, a wireless power transfer model through the example of inductively-coupled coils of irregular shape in software package COMSOL Multiphysics is studied. Circuit parameters, such as inductance, coil resistance and self-capacitance were defined through electromagnetic energy by the finite-element method. The study was carried out according to Helmholtz equation. Spatial distribution of current per unit depending on frequency and the coupling coefficient for analysis of resonant frequency and spatial distribution of the vector magnetic potential at different distances between coils were presented. The resulting algorithm allows simulating the wireless power transfer between the inductively coupled coils of irregular shape with the assessment of the optimal parameters.
Highlights
In this paper, a wireless power transfer model through the example of inductivelycoupled coils of irregular shape in software package COMSOL Multiphysics is studied
Statement of the research problem resides in estimation of the optimum parameters of the inductive coil corresponding to wireless power transfer with maximum efficiency at a distance not exceeding the size of the room [2]
Both coils are made of cooper wire with radius r=0.3 m, the internal radius of the helical coil smaller turn is equal to R=0.25 m, the distance between inductive coils varies in the range of 0.5-2 meters maintaining the power transfer to the distance exceeding the radius of coils by the factor of 8
Summary
Yu N Isaev, O V Vasileva, A A Budko and S Lefebvre National Research Tomsk Polytechnic University, 30, Lenina ave., Tomsk, 634050, Russia 2 Conservatoire National des Arts et Métiers, École Normale Supérieure de Cachan, Paris, France
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