Design and optimization of a self-resonant impedance matched coil for Wireless Power Transfer

Nathis Cote (1, 2) , Nicolas Garraud (1, 2) , François Frassati (1, 2) , Léo Sterna (1, 2) , Pierre Perichon (3, 4) , Sébastien Boisseau (1, 2)

1 DSYS - Département Systèmes
2 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information
3 DEHT - Département de l'électricité et de l'hydrogène dans les transports
4 NUCLEART - ARC-Nucleart CEA Grenoble

In this paper, we report the design and the optimization of high-quality-factor self-resonant coils for Wireless Power Transfer (WPT) relying on resonant inductive coupling. The main benefit of self-resonant coils is their potential to increase the quality factor of WPT systems, enabling to reach higher efficiencies at large distances. An analytical modeling of self-resonant coils is proposed and validated by finite element simulations (ADS Keysight). Self-resonant coils prototypes are then introduced and characterized, and a new topology for impedance-matched self-resonant coils enabling to further increase the performances of WPT systems is finally reported.

Domains: Electromagnetism; Electronics

Nathis Cote, Nicolas Garraud, François Frassati, Léo Sterna, Pierre Perichon, et al.. Design and optimization of a self-resonant impedance matched coil for Wireless Power Transfer. WPW 2022 - IEEE Wireless Power Transfer Conference, Jul 2022, Bordeaux, France. pp.48-53, ⟨10.1109/WPW54272.2022.9853945⟩. ⟨cea-03881953⟩