A single stage AC/RF converter for wireless power transfer applications

A new single-stage AC/RF converter is proposed which directly converts a utility AC input to a regulated, high frequency (6.78MHz) AC output for wireless power transmission. The topology integrates a totem pole rectifier operating in discontinuous conduction mode (DCM) and a phase-shift controlled f...

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Bibliographic Details
Published in2017 IEEE Applied Power Electronics Conference and Exposition (APEC) pp. 1682 - 1688
Main Authors Ling Jiang, Costinett, Daniel, Fathy, Aly, Songnan Yang
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.03.2017
Subjects
6. 78MHz
AC to RF converter
Frequency conversion
Inverters
Power generation
Rectifiers
single stage
Topology
Transmitters
Wireless power transfer
WPT
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Summary:A new single-stage AC/RF converter is proposed which directly converts a utility AC input to a regulated, high frequency (6.78MHz) AC output for wireless power transmission. The topology integrates a totem pole rectifier operating in discontinuous conduction mode (DCM) and a phase-shift controlled full bridge inverter. Compared to traditional multi-stage approaches, the single-stage approach improves system power efficiency by reducing the number of cascaded conversion stages. In addition, the reduced power semiconductor component count will be a potential benefit for compact size and lower cost. A 100W laboratory prototype has been built to verify theoretical analysis. Experimental measurements show the capability of the converter to provide power factor correction (PFC) with high conversion efficiency and low total harmonic distortion (THD).
ISSN:2470-6647
DOI:10.1109/APEC.2017.7930925