High efficiency midrange wireless power transfer system

Author

Garnica, Jaime ; Casanova, Joaquin ; Lin, Jenshan

Author_Institution

Univ. of Florida, Gainesville, FL, USA

fYear

2011

Firstpage

73

Lastpage

76

Abstract

Wireless power transfer systems using near-field magnetic coupling are attractive as they allow power transfer with high efficiency and do not require an unobstructed path between transmitter and receiver. In this work a two coil wireless power transmission system is analyzed, including the driving amplifier, and a demonstration system is built and characterized. The system achieves 76% efficiency for a distance of 1 meter for 40 W transferred power. The effects of changes to the geometry of the system (pitch angle of coils, separation distance) are also examined, and the effect on amplifier topologies analyzed.

Keywords

coils; electromagnetic coupling; inductive power transmission; coil wireless power transmission system; distance 1 m; driving amplifier; efficiency 76 percent; high efficiency midrange wireless power transfer system; near-field magnetic coupling; power 40 W; Coils; Couplings; Inductance; Power amplifiers; Resistance; Wireless communication; Zero voltage switching; Electromagnetic coupling; inductive coupling; wireless power transfer;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications (IMWS), 2011 IEEE MTT-S International

Conference_Location

Uji, Kyoto

ISSN

2157-362X

Print_ISBN

978-1-61284-214-1

Type

conf

DOI

10.1109/IMWS.2011.5877094

Filename

5877094