Design and modeling of PCB coils for inductive power charging

Guillaume Vigneaux (1, 2, 3) , Mohammed Cheikh (3) , R. Benbouhout (3) , Alexandru Takacs (3, 1, 2)

1 LAAS-MINC - Équipe MIcro et Nanosystèmes pour les Communications sans fil
2 University of Toulouse
3 Continental Automotive France [Toulouse]

This article presents a modeling and parametric investigation of PCB (printed circuit board) coils used in inductive power charging systems by using intensive full-wave electromagnetic simulations. Low frequencies applications (below 1 MHz) are targeted. The proposed modeling approach and design methodology are validated for wireless power transfer systems including transmitting (Tx) and receiving (Rx) coils. The impact of ferrite materials used for shielding and efficiency improvement is also analysed. Optimized PCB coils allowing a theoretical efficiency of 88.7% at 100 kHz and 98.5% at 1 MHz confirms that PCB coils are appropriate for wireless power transfer at such frequencies.

Mots clés: Wireless power transfer; antenna; PCB coils; electromagnetic modeling; link; efficiency; magnetic coupling; email: guillaumevigneau@continental-corporationcom

Domaines: Sciences de l'ingénieur [physics]

Guillaume Vigneaux, Mohammed Cheikh, R. Benbouhout, Alexandru Takacs. Design and modeling of PCB coils for inductive power charging. Wireless Power Transfer, 2015, 2 (2), pp.143 - 152. ⟨10.1017/wpt.2015.17⟩. ⟨hal-01409233⟩