Homogenization Methods in Simulations of Transcutaneous Energy Transmitters

Daniela Wolter Ferreira (1) , Ruth V. Sabariego (2) , Luiz Lebensztajn (1, 3) , Laurent Krähenbühl (4, 3) , Florent Morel (5) , Christian Vollaire (4, 3)

1 Escola Politecnica da Universidade de Sao Paulo [Sao Paulo]
2 ACE - Applied and Computational Electromagnetics [Liège]
3 LIA817 - LIA franco brésilien James Clerk Maxwell (CNRS-CNPq)
4 MIS - Ampère, Département Méthodes pour l'Ingénierie des Systèmes
5 EE - Ampère, Département Energie Electrique

Transcutaneous Energy Transmitters (TETs) transfer wireless energy through an inductive link established between two pancake coils placed, respectively, outside and inside the body of a patient. The simulation of the misalignment between the coils must be performed in three dimensions (3D), e.g., with a Finite Element (FE) method. This paper introduces a homogenization method to minimize the cost of the expensive 3D FE computation in the frequency domain. Its originality lies in the non-homogeneous TET geometry during the meshing process. The results of this technique are compared with those obtained by considering regular stranded TET coils. They showed improvements mainly at kilohertz frequencies, the typical TET operating frequency range

Mots clés: Inductive Power Transmission; Proximity effect; Approximation Methods; Finite Element Methods; Proximity effect.

Domaines: Electromagnétisme; Biophysique [physics.bio-ph]; Physique Numérique [physics.comp-ph]

Daniela Wolter Ferreira, Ruth V. Sabariego, Luiz Lebensztajn, Laurent Krähenbühl, Florent Morel, et al.. Homogenization Methods in Simulations of Transcutaneous Energy Transmitters. IEEE Transactions on Magnetics, 2014, 50 (2), pp.7025204. ⟨10.1109/TMAG.2013.2284891⟩. ⟨hal-00869995⟩