Electrodynamic Wireless Power Transmission to Rotating Magnet Receivers

14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Garraud, A.^1 ; Jimenez, J.D.^1 ; Garraud, N.^1 ; Arnold, D.P.^1

Interdisciplinary Microsystems Group, Department of Electrical and Computer Engineering, University of Florida, Gainesville

FL

32611, United States^1

关键词: Magnetic field amplitudes;    Multiple receivers;    Operational frequency;    Output power;    Power densities;    Wireless power transmission;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/557/1/012136/pdf
DOI  :  10.1088/1742-6596/557/1/012136

来源: IOP

【 摘 要 】

This paper presents an approach for electrodynamic wireless power transmission (EWPT) using a synchronously rotating magnet located in a 3.2 cm3receiver. We demonstrate wireless power transmission up to 99 mW (power density equal to 31 mW/cm3) over a 5-cm distance and 5 mW over a 20-cm distance. The maximum operational frequency, and hence maximal output power, is constrained by the magnetic field amplitude. A quadratic relationship is found between the maximal output power and the magnetic field. We also demonstrate simultaneous, power transmission to multiple receivers positioned at different locations.