Title :
High efficiency midrange wireless power transfer system
Author :
Garnica, Jaime ; Casanova, Joaquin ; Lin, Jenshan
Author_Institution :
Univ. of Florida, Gainesville, FL, USA
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;
Conference_Titel :
Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications (IMWS), 2011 IEEE MTT-S International
Conference_Location :
Uji, Kyoto
Print_ISBN :
978-1-61284-214-1
DOI :
10.1109/IMWS.2011.5877094
