Design of Stabilizing Network for Capacitive Power Transfer Transmitter Operating at Maximum Power Transfer Limiting the Voltage Gain in Resonant Capacitors

Capacitive power transfer (CPT) is a technology that is emerging as an alternative to inductive power transfer (IPT) in applications requiring low to medium power. A great interest has been developed in the implementation of CPT systems in battery charging systems, where a condition to compete with...

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Bibliographic Details
Published in:Electronics (Basel) 2024-10, Vol.13 (19), p.3859
Main Authors: Estevez-Encarnacion, Eduardo Salvador, Hernandez-Gonzalez, Leobardo, Ramirez-Hernandez, Jazmin, Juarez-Sandoval, Oswaldo Ulises, Guevara-Lopez, Pedro, Avalos Arzate, Guillermo
Format: Article
Language:English
Subjects:
Analysis
Batteries
Battery chargers
Capacitors
Communications equipment
Design engineering
Efficiency
Electronic components industry
Maximum power transfer
Resonant frequencies
Transmitters
Voltage gain
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Summary:Capacitive power transfer (CPT) is a technology that is emerging as an alternative to inductive power transfer (IPT) in applications requiring low to medium power. A great interest has been developed in the implementation of CPT systems in battery charging systems, where a condition to compete with IPT systems is the need to increase the power transfer in the CPT systems without significant losses. This paper puts forth a design methodology for a stabilizing network, which has been applied to a CPT system. This methodology has been developed through impedance analysis of the circuit, in order to achieve maximum power transfer, with total gains of voltage and current reaching a value close to unity. The methodology allows for the calculation of the value of the components of the stabilizing network, which has been designed with the objective of stabilizing the resonant frequency against changes in the capacitance of the transmission plates. To validate the design procedure, an experimental prototype was developed at 25 W and an operational frequency of 1.55 MHz. The results obtained validate the design methodology.
ISSN:2079-9292
2079-9292
DOI:10.3390/electronics13193859