Summary
International Symposium on Nonlinear Theory and Its Applications
2022
Session Number:C2L-B
Session:
Number:C2L-B-04
New Approach to 150 kHz WPT by Sinusoidally Modulated Step-Down Converter
Yutaro Sakuraba , Ryo Takahashi , Alberto Castellazzi,
pp.431-432
Publication Date:12/12/2022
Online ISSN:2188-5079
Summary:
This paper proposes an original approach to the development of a power converter for wireless-power-transfer applications. The idea is to use a buck topology modulated sinusoidally, so as to remove the need for resonating circuits and be able to exploit conventional inductive coupling solutions. The advantage of this approach is twofold: first, the synthesized voltage can be controlled on the primary side by a simple voltage feedback loop and kept at nominal value even in the presence of varying load and coupling conditions; second, the efficiency can be made much higher than in conventional resonant approaches. As a case-study, a 150 kHz fast-charging system for drone battery is presented, with a nominal power rating of 25 W.