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- Title
Coupling-Independent Capacitive Wireless Power Transfer Using Frequency Bifurcation.
- Authors
Minnaert, Ben; Mastri, Franco; Stevens, Nobby; Costanzo, Alessandra; Mongiardo, Mauro
- Abstract
Capacitive wireless power transfer can be realized by mutually coupled capacitors operating at a common resonant frequency. An optimal load exists that maximizes either the efficiency or the power transfer to the load. In this work, we utilize the frequency bifurcation effect to propose a frequency agile mode that allows for a nearly coupling-independent regime. We analytically determine the operating conditions of the coupling-independent mode based on the different system gains. In this way, we obtain a solution that achieves nearly constant efficiency and power transfer, even at varying coupling. We compare our results to inductive wireless power transfer where a perfect coupling-independent mode is achievable.
- Subjects
CAPACITIVE sensors; WIRELESS power transmission; LOAD flow control (Electric power systems); BIFURCATION theory; ENERGY transfer
- Publication
Energies (19961073), 2018, Vol 11, Issue 7, p1912
- ISSN
1996-1073
- Publication type
Article
- DOI
10.3390/en11071912