Analysis of Capacitive Wireless Power Transfer

The analysis of capacitive wireless power transfer was conducted in a general manner. The circuit model of a capacitive wireless power transfer chain was presented. The derivation of the power transfer efficiency through the chain in question as well as the active power delivered to the appliance te...

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Bibliographic Details
Published in:IEEE access 2019, Vol.7, p.26678-26683
Main Authors: Kracek, Jan, Svanda, Milan
Format: Article
Language:English
Subjects:
admittance
Capacitance
Capacitive wireless power transfer
Couplings
Efficiency
Electrical impedance
Electrodes
Frequency conversion
Integrated circuit modeling
Manganese
Mathematical analysis
power
Wireless power transfer
Wireless power transmission
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Summary:The analysis of capacitive wireless power transfer was conducted in a general manner. The circuit model of a capacitive wireless power transfer chain was presented. The derivation of the power transfer efficiency through the chain in question as well as the active power delivered to the appliance terminating this chain was shown. Both the case of the maximal efficiency and the one of the maximal appliance power were treated and conditions for these optima were found in both cases. The appliance power corresponding to the maximal efficiency and the efficiency corresponding to the maximal appliance power were also expressed. The total admittance of the capacitive wireless power transfer chain was calculated. For both optimal conditions, the appliance power and total admittance were written in the normalized form, which enabled to express them as functions of single variable in the same way as the efficiency.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2018.2883712